CN110053157A - A kind of production method of the composite ceramics double shrouded wheel containing metallic framework - Google Patents
A kind of production method of the composite ceramics double shrouded wheel containing metallic framework Download PDFInfo
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- CN110053157A CN110053157A CN201910376785.5A CN201910376785A CN110053157A CN 110053157 A CN110053157 A CN 110053157A CN 201910376785 A CN201910376785 A CN 201910376785A CN 110053157 A CN110053157 A CN 110053157A
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- Prior art keywords
- mold
- mould
- impeller
- valve
- framework
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 74
- 239000000919 ceramic Substances 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 46
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- 238000002156 mixing Methods 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 31
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- 229910010293 ceramic material Inorganic materials 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
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- 239000012970 tertiary amine catalyst Substances 0.000 claims description 6
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 6
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229940049964 oleate Drugs 0.000 claims description 3
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 3
- 229920005906 polyester polyol Polymers 0.000 claims description 3
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 3
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000004088 foaming agent Substances 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 239000012974 tin catalyst Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000011253 protective coating Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
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- 238000003466 welding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 239000012467 final product Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
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- 239000000741 silica gel Substances 0.000 description 4
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
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- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
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- 238000005242 forging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
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- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
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- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- 239000010703 silicon Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
- C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
- C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/06—Polyurethanes from polyesters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of production method of composite ceramics double shrouded wheel containing metallic framework of impeller abrasion-proof protective coating application field, operating procedure is as follows: (1) preparing impeller framework；(2) outer diameter mold and foaming core model are prepared；(3) impeller mold combines assembly manipulation；(4) material feeding equipment connects；(5) mould material prepares；(6) mould material vacuum pumping；(7) material feeding operates；(8) material feeding curing operation；(9) mould release operates；(10) details sanding operation.Vacuum step in this production technology carries out during mixing mould material, and the entrained air bubbles inside mould material have been had been removed before material feeding.And using the two-stage process for doing heating cure after material feeding again, so that the operation difficulty of shot process declines, the waste material cleaning of material is convenient, is conducive to personnel's shift of reasonable arrangement production workshop section, has the comprehensive advantage for designing simple, reliable and stable, good quality and cost economy.
Description
Technical field
The present invention relates to a kind of a kind of composite ceramics encloseds containing metallic framework of impeller abrasion-proof protective coating application field
The production method of impeller.
Background technique
Impeller abrasion-proof to improve in application process damages performance, uses sintering ceramic powder curing molding on existing market,
And ceramic powders are melted at 1000 degrees Celsius or more and are poured into sinter molding in mold and prepare ceramic impeller.But after forming
Ceramic impeller be easy embrittlement, under the running at high speed that water pump uses, easily occur cracking disintegrate.Simultaneously because high temperature sintering
Limitation, metal are easy fusing, so impeller is all integrally ceramics, it can not be using the method for inner liner metal skeleton come dispersive stress.
For the working strength for guaranteeing impeller, using the composite coating of high molecular material and ceramic particle powder in contemporary work production
Some metal casting impellers outer surface is coated, which can solidify at normal temperature, but surface only can be achieved and cover
Lid, there is no the inside for running through impeller, be easy to cause stress distribution uneven, cause to crack, need frequent coating reparation.In addition,
Using the composite ceramic material casting production impeller of normal temperature cure for large-scale impeller (being directly more than 800mm's) comparison
Difficulty, the reason is that curing rate is than very fast in casting process for the composite ceramic material of normal temperature cure, general only 10 minutes extremely
15 minutes durations of pouring, otherwise material is not easy to flow after being easy condensation.The casting process of large-scale impeller generally requires 30 minutes
To 2 hours, it just can ensure that mould material full of mold inner-cavity, it requires that mould material must be slow cured, Ke Yishi
Close production scheduling.Further, since being the complicated shape of closing and distortion inside the blade passage of large-scale double shrouded wheel, so that closing
Formula impeller " core model " does not allow more easy mold release release than unshrouded impeller.There are some producer's impeller core models to be designed to detachable multistage
" metal core die ", or the evaporative pattern such as " gypsum core model " or " wax core model " of disposable purposes.The processing cost of " metal core die " and
Maintenance cost is very high, after multiple installation and removal, it is easy to local failure at abrasion and tip and thin layer." gypsum core model " table
Face is porous and coarse, be easy it is dry and cracked, cause demoulding impeller finished product it is coarse." wax core model " is more fragile, and self structure intensity is not
It is enough, it is impossible to be used in the installation and fixation of big core die, and soften in curing process after heating and collapse.
Patent of invention CN201620798889.7 describes a kind of desulfurization pump of lining resin silicon carbide, pouring on mold
Riser is poured from top to bottom at top, unavoidably be will lead to air and is entrained into mold cavity, and bottom and corner is caused to contain gas
Bubble, influences final product quality.In addition, the material before being poured in the patent does not vacuumize in preparing whipping process, will lead to
Bubble is mixed into material internal, influences final product quality.Finally, the impeller core model in the patent is soft silica gel material, in large size
When impeller mould material, by material rising buoyancy and head of liquid in the case where silica gel be easily deformed, without enough supports
Intensity, so that silica gel core model offset orientation point, the malformation after causing blade cures influence final product quality.
In order to reduce the aeration formed in the mold runner in casting process, some producers can place impeller mold
It is poured in vacuum chamber, to eliminate bubble.But the production of large-scale vacuum room is expensive, casting for large-scale impeller and batch
The cost consumption for quantifying production is huge.In addition, when casting using vacuum chamber, due to composite ceramic material itself viscosity very
Greatly, it is easy to cause mould material that can not flow to the catwalk of mold bottom, then mould material terminates stream because of high-drag
There is intermittent gap in dynamic or mould material, so that the finished product after solidifying be caused to scrap, reduce final product quality, increases
Cost.
Summary of the invention
The technical problem to be solved by the present invention is to provide it is a kind of effectively improve production quality containing the compound of metallic framework
The production method of ceramic double shrouded wheel.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of production method of the composite ceramics double shrouded wheel containing metallic framework, operating procedure are as follows:
(1) prepare impeller framework: blade framework orifice plate, front cover framework orifice plate and rear cover framework orifice plate carry out cutting system
Make, blade framework orifice plate, front cover framework orifice plate, rear cover framework orifice plate, skeletal support stick and hub welding at impeller framework,
Soldered impeller framework pair and the contact site outer surface of composite ceramic material carry out blasting treatment, using acetone to impeller
Skeleton is cleaned and carries out the drying process of compressed air drying；
(2) prepare outer diameter mold and the core model that foams: outer diameter mold carries out the setting of core model embedded slot and is placed into production
In mold, in the production mould inject core model raw material, into cross foam process form core model, will production complete outer diameter mold and
Foaming core model is separated with production mould；
(3) impeller mold combines assembly manipulation: simultaneously by precoating silicone oil mold release agent on the thread of the casting connector at sprue
Sprue is screwed in, box cover die and outer gear mold before inner conical surface mold is placed on platform and is sequentially connected complete production
Outer diameter mold and foaming core model placement are fixed in outer gear mold, and impeller framework is fixed on leaf by upper locating piece and lower locating piece
It takes turns in die assembly, is then fixedly connected rear cover mould；
(4) material feeding equipment connects: the blender inside mixing tank is connect with stirring motor, and mixing tank is passed through vacuum
Valve is controlled to a vacuum pump and is arranged corresponding deflation valve, the discharge port of mixing tank is connected delivery pump, and in discharge port
Inlet valve is set between delivery pump, and the conveying outlet of delivery pump is connected to mixing tank and to be formed back by reflux line, return valve
Mould group is flowed, while the conveying outlet of delivery pump realizes that the sprue combined with impeller mold connects by outlet valve and conveyance conduit
It is logical；
(5) mould material prepares: mould material being proportionally stirred and is sufficiently mixed, is then poured what mixing was completed
Note material pours into mixing tank；
(6) mould material vacuum pumping: stirring motor is opened, stirring operation duration five minutes or more, is then turned on back
Stream mould group simultaneously closes deflation valve, opens vacuum valve and vacuum pump, makes in mixing tank vacuum degree -0.2 to -0.4MPa,
Continue stirring operation and reflux operation 30 minutes or more；
(7) material feeding operates: closing vacuum pump, stirring motor, delivery pump, vacuum valve and return valve, opens deflation valve
And outlet valve, it is again turned on delivery pump, carries out material feeding operation, until mould material has a small amount of spilling from exhaust outlet, is finally closed
Delivery pump and outlet valve, material feeding operation are completed；
(8) material feeding curing operation: the sprue for the impeller mold combination that material feeding is completed is separated with conveyance conduit, and room temperature
Stand 24 hours or more, impeller mold combination is placed into baking oven and is heated to 60 degrees Celsius and continues 1 hour heating operation,
It then heats to 80 degrees Celsius and continues operation cured above in 4 hours and complete；
(9) mould release operates: after the completion of mould material solidification, combining impeller mold and solidifies the composite ceramic completed
Porcelain double shrouded wheel carries out lock out operation, obtains the composite ceramics double shrouded wheel of casting complete；
(10) details sanding operation: using milling tools to mostly with mould material carry out sanding operation, obtain composite ceramic
Porcelain double shrouded wheel finished product.
The production method of the present invention provides a kind of composite ceramics double shrouded wheel containing metallic framework, the production method room temperature
Lower material feeding, is then formed by later period heating cure.Composite ceramics mould material of the invention stirs in vacuum barrel de- in advance
Bubble is removed, is injected by the bottom that delivery pump is delivered to impeller mold, mould material " from bottom to top " is slowly raised to mold
Top vent after waiting is poured, places into baking oven and solidifies after heating.The above production design and method, have design
Simply, the comprehensive advantage of reliable and stable, good quality and cost economy.Two sections for doing heating cure after material feeding simultaneously again
Technique, so that the operation difficulty of shot process declines, the waste material cleaning of material is convenient, is conducive to reasonable arrangement production workshop section
Personnel's shift.
Further, in the step (3) impeller mold combination assemble before conical surface mold internal first, preceding box cover die,
Outer gear mold, outer diameter mold, rear cover mould, lower locating piece and upper locating piece carry out the precoating behaviour of silicone oil mold release agent or wax release agent
Make.
Further, inner conical surface mold, preceding box cover die, outer gear mold, outer diameter mold, rear cover mould, lower locating piece and
The material of upper locating piece is cast aluminium.
Further, the delivery pump is screw pump, the conveying entrance is gone out by the mixing of inlet valve and mixing tank
Mouth connection.
Further, the reflux mould group includes reflux line and recovery channel, one end connection of the reflux line
Conveying outlet, the other end are connected to by return valve with mixing tank, and the end that the reflux line is connected to mixing tank is located remotely from
End face where mixing outlet, one end of the recovery channel connect reflux line, and the other end connects external reclaimer, described
Waste vaive is provided on recovery channel.
Further, the impeller mold combination is located on shaking platform, the central axis of the impeller mold combination
Perpendicular to the placed side of shaking platform, the sprue of the impeller die set is located at close to the end of shaking platform, is carrying out step
(7) when material feeding operates, shaking platform is opened simultaneously.
Further, the sprue is two, the triple valve includes valve A, valve B and valve C, the valve
The connection of one end of A and conveyance conduit, the valve B and valve C pass through the material feeding that hose is located at sprue with two respectively and connect
Mouth connection, the material feeding interface are polystyrene material, and the material feeding interface passes through the connecting portion of locked clip device and hose.
Further, the operating procedure (7) further includes mould material recycling and equipment cleaning operation, the casting material
Material recycling and equipment cleaning operation include the following steps: to open return valve and waste vaive after the completion of material feeding operation, open conveying
Pump, until inside residue mould material is all discharged；Acetone or alcohol are continuously added in mixing tank, the flushing reflux line that flows back,
Recovery channel and feeder motor.
Further, the outer diameter mold plate thickness is 10mm to 50mm, outer surface diameter size immobilizes, inner surface
Diameter can be identical as the composite ceramics double shrouded wheel diameter of production as needed, while it is spare to may be designed to multiple dimension series.
Further, the foaming core model, by pouring technology one-pass molding, the production raw material of the foaming core model is pressed
According to parts by weight, including 100 parts of polyether polyol, 0.1~0.5 part of water, 2~5 parts of silicone surfactant, tertiary amine catalyst
0.1~0.2 part, 0.01~0.02 part of organotin catalysts, 10~20 parts of CFC-11 foaming agent, polyphenyl polymethylene polyisocyanate cyanogen
100 parts of acid esters, the hydroxyl value of the polyether polyol is 400~500mgKOH/g, and the polyether polyol is aromatic hydrocarbons polyester polyols
Alcohol, the tertiary amine catalyst are one of triethylene diamine, tetramethylethylened, triethanolamine or a variety of mixing
Object, the organotin catalysts are one of stannous octoate, dibutyltin dilaurate, stannous oleate or a variety of mixing
Object.
The beneficial effects of the present invention are:
1, the vacuum step in this production technology carries out during mixing mould material, has been removed before material feeding
Entrained air bubbles inside mould material.And using the not cured material of material feeding long-time under room temperature, add again after material feeding
The cured two-stage process of temperature, so that the operation difficulty of shot process declines, the waste material cleaning of material is convenient, is conducive to rationally
It arranges production personnel's shift of workshop section；
2, the precoating operation of silicone oil mold release agent or wax release agent, improves later period demoulding efficiency, provides for quality of mold release
It ensures；
3, impeller mold combination be process using cast aluminium, then aluminium-making mould weight ratio use steel casting die light 60% with
On, it is easy for installation and removal, lowers labor intensity；
4, by the way of the conveying material of screw pump, it ensure that steady and higher injection pressure, avoid and lean in the past
The problem of cannot being adequately filled up by slype resistance in a mold in material self weight casting process；
5, since in such a way that bubble is caught up with by " from bottom to top " and shaking platform, mould strength is only subjected to mould material
Liquid-level pressure；Also need to bear additional pressure when instead of previous vacuum pouring or pressure casting, and the steel that must be used
Molding jig reduces structural strength demand, while bubble in die channel being made gradually to be rushed to the exhaust outlet above mold, no
As for the secondary air that is mixed into mould material, the previous technique stream for needing entire mold to be placed on large-scale vacuum room is eliminated
Journey, so that material feeding cost is greatly lowered, manufacturing schedule is accelerated；
6, material feeding connector is polystyrene material, has from after release property, mould material solidification, can't be bonded thereto,
During mold releasability, downward back-out that material feeding connector can be convenient and break away from moulds and form release gap in sprue,
Facilitate the solidification ceramic material above mold release from vertical direction demoulding；
7, on the one hand above-mentioned foaming core model preparation method improves the compression strength of the hard foamed material, makes its compression strength
More much higher than the core model that silica gel or paraffin make, compressive deformation is small, will not cracking, and is especially suitable for the pourer of large size impeller
Skill.On the other hand, which has good toughness, and when installing core model and entering die assembly, narrow corner parts are not allowed
Easy embrittlement, and when casting mold combination vibration consolidates material, core model will not cracking, and avoid in the past using gypsum core
The problem of mould easy fragmentation.In addition, foaming core model is prefabricated to become one-time formed integration distorted-structure, without as previous multistage gold
Belong to core model and need tight splicing, so that core model installment work greatly simplifies.During mould material curing and demolding is release,
Foamed material is easy to be dismantled and separated with sharp instruments such as screwdrivers, as medical disposable material, without consider core model maintenance and
The problem of repairing.It, can be preparatory in high-volume cast ceramic impeller except the production of above content, the core model that foams is simple and quick
Prepare tens to a core models up to a hundred, the cost of manufacture than metal core die, gypsum core model and silica gel core model is much less again.Foaming
Core model use can be sent to garbage burning factory with centralized collection after finishing forcible entry and do innoxious burning-up processing, be improved waste disposal
Efficiency.
Detailed description of the invention
Fig. 1 is a kind of Integral connection structure of the production method of composite ceramics double shrouded wheel containing metallic framework of the invention
Schematic diagram；
Fig. 2 is the impeller framework and leaf of a kind of production method of composite ceramics double shrouded wheel containing metallic framework of the invention
Take turns the attachment structure schematic diagram of die assembly；
Fig. 3 is the structure enlargement diagram of a-quadrant in Fig. 2；
Fig. 4 is the structure enlargement diagram of B area in Fig. 2；
Fig. 5 is the material feeding interface and card of a kind of production method of composite ceramics double shrouded wheel containing metallic framework of the invention
The structural schematic diagram of hoop；
Fig. 6 is a kind of knot of the impeller framework of the production method of composite ceramics double shrouded wheel containing metallic framework of the invention
Structure schematic diagram；
Fig. 7 is a kind of the compound of the production method casting complete of composite ceramics double shrouded wheel containing metallic framework of the invention
The structure sectional view of ceramic double shrouded wheel；
In the figure, it is marked as mixing tank 1, blender 11, stirring motor 111, vacuum valve 12, vacuum pump 121, deflation valve
13, inlet valve 14, reflux line 15, return valve 151, recovery channel 16, waste vaive 161, delivery pump 2, feed hopper 21, screw pump
Body 22, motor 23, conveyance conduit 24, outlet valve 25, triple valve 26, hose 27, impeller mold combination 3, sprue 31, material feeding connects
Mouth 311, clip 312, thread 313, sealing ring 314, inner conical surface mold 32, preceding box cover die 33, outer gear mold 34, it is fixed that front cover is kept off outside
Position slot 341, gear sealing ring 342, rear cover mould 35, exhaust outlet 351, rear cover keep off locating slot 352 outside, sealing are kept off outside rear cover front cover outside
Circle 353, upper locating piece 36, lower locating piece 37, upper positioning screw 38, lower positioning bolt 381, outer diameter mold 4, core model embedded slot,
41, foam core model 5, impeller framework 6, blade framework orifice plate 61, front cover skeleton orifice plate 62, rear cover skeleton orifice plate 63, skeletal support
Stick 64, wheel hub 7, the first groove 71, the second groove 72, chamfering 73, impeller lock nut position 74, composite ceramics mould material 8, lock
Tight bolt 9.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
A kind of operating procedure of the production method of composite ceramics double shrouded wheel containing metallic framework of the present invention is as follows.
(1) preparation of outer diameter mold 4 and the core model 5 that foams.
Core model embedded slot 41 on outer diameter mold 4 as shown in Figure 2 be it is multiple, be circularly and evenly distributed in outer diameter mold 4
Inner surface, then it is corresponding foaming core model 5 outer surface be provided with clamped convex block corresponding thereto.The quantity may be configured as six
It is a, eight etc., set 5mm to 10mm for the groove depth of core model embedded slot 41 in the embodiment, groove width is set as 15mm to 30mm,
Slot high setting is 30mm to 60mm, to realize the fixation of foaming core model 5.
In the preparation process of outer diameter mold 4 and foaming core model 5, outer diameter mold 4 is pre-assembled in production mould first
In, the raw material of core model are then injected in its production mould, pass through foam process shaping foam core model 5 therewith.Production is completed
Outer diameter mold 4 and foaming core model 5 removed production mould together, and then be assembled in subsequent impeller mold combination 3.On
The plate thickness for stating outer diameter mold 4 is 10mm to 50mm, and outer surface diameter size immobilizes, and inner surface diameter can be as needed and raw
The composite ceramics impeller diameter of production is identical, and is designed to that multiple dimension series are spare.Usually in the impeller production of pump, usually want
According to the different flow and lift of pump, the manufacturing procedure that diameter is reduced in cutting is carried out to impeller in the later period.But the outer diameter mold 4
Application can avoid the later period machining cutting impeller diameter process, saved processing cost and time, be convenient for a variety of impeller outers
The batch production of diameter.
The production raw material of above-mentioned foaming core model 5 includes: 100 parts of polyether polyol according to parts by weight, and 0.1~0.5 part of water,
2~5 parts of silicone surfactant, 0.1~0.2 part of tertiary amine catalyst, 0.01~0.02 part of organotin catalysts, CFC-11 foaming
10~20 parts of agent, 100 parts of polyphenyl polymethylene polyisocyanates.Simultaneously above-mentioned polyether polyol hydroxyl value be 400~
500mgKOH/g, and be Aromatic Polyester Polyols.Tertiary amine catalyst is triethylene diamine, tetramethylethylened, three ethyl alcohol
One of amine or a variety of mixtures.Organotin catalysts are stannous octoate, in dibutyltin dilaurate, stannous oleate
One or more mixtures.
Above-mentioned raw materials are stirred in the above-mentioned production mould of injection in the production process of foaming core model 5, then it can be normal
The lower natural reaction foam volume of temperature increases by 15 times to 20 times, and core model mold is full of in 10 minutes, completely anti-after 20 minutes
Hard closed pore structures should be become, demoulding obtains foaming core model 5.The compressive strength rate of the foaming core model 5 of formula production
Silica gel or the core model of paraffin production are much higher, and compressive deformation is small, will not cracking, and are especially suitable for the pouring technology of large size impeller.
Meanwhile the foaming core model 5 has good toughness, the narrow corner parts when installation foaming core model 5 enters impeller mold combination 3
It is not easy embrittlement, and when casting mold combination vibration consolidates material, core model be will not cracking, and be avoided in the past using stone
The problem of cream core model easy fragmentation.In addition, foaming core model 5 is prefabricated to become one-time formed integration distorted-structure, without as previous
Multistage metal core die needs tight splicing, so that core model installment work greatly simplifies.It is release in mould material curing and demolding
In the process, foamed material is easy to be dismantled and separated with sharp instruments such as screwdrivers, as medical disposable material, without considering core model
The problem of maintenance and repair.The production of the foaming core model 5 is simple and quick, can be quasi- in advance in high-volume cast ceramic impeller
Standby tens to a core models up to a hundred, and the cost of manufacture than metal core die, gypsum core model, silica gel core model is much less again.Foam core model 5
It can send to garbage burning factory with centralized collection after use finishes forcible entry and do innoxious burning-up processing.
(2) preparation of impeller framework 6
The structure of impeller framework 6 is as shown in fig. 6, be provided with the first groove 71, groove depth 5 to 10mm, slot in the outer circle of wheel hub 7
Wide 10 to 15mm.The groove depth 5 of second groove 72 is to 10mm, groove width 10 to 15mm, and chamfering 73 is arranged in its end, is poured with improving
Infuse material and wheel hub adhesive strength.Impeller lock nut position 74 is set in the inner circle of wheel hub 7, assembles and bears for positioning screw cap
The locking pressure of nut.The material of above-mentioned wheel hub 7 can be No. 45 steel, 2205 double suction stainless steels, in 2507 two phase stainless steels
A kind of commercially available forging.Blade framework orifice plate 61, front cover framework orifice plate 62 and rear cover framework orifice plate 63 in impeller framework 6
Material a kind of commercially available plate of 304 stainless steels, 316L stainless steel and 2205 two phase stainless steels can be used.Its thickness can be
4mm to 10mm, hole are uniformly distributed, and Circularhole diameter is 10mm to 15mm, and pitch of holes is 8mm to 10mm.Blade framework orifice plate 61
According to impeller waterpower G- Design it is multiple breadths of distortion abnormity, while prepares required blade quantity, generally 3 to 8 breadths.
Blade framework orifice plate 61 needs first to be made annealing treatment, then the punching press extension molding in stamping die again.Front cover as shown in Figure 6
Framework orifice plate 62 is circular conical surface, then covering of the fan can be cut in advance in process of production, then after veneer reeling machine compression moulding
Welding covering of the fan edges at two ends line becomes circular cone.Above-mentioned rear cover framework orifice plate 63 is circumferential plane, can directly be cut.
Skeletal support stick 64 is the pole of diameter 5mm to 8mm, presses circumference uniform distribution 4 to 8 with the central axis of wheel hub 7, material can be
A kind of commercially available bar of 304 stainless steels, 316L stainless steel and 2205 two phase stainless steels.
Above-mentioned blade framework orifice plate 61, front cover framework orifice plate 62, rear cover framework orifice plate 63, wheel hub and skeletal support
Stick 64 is attached and is fixed by solder joint according to drawing, and welding manner is argon arc welding.The quantity of pad is according to hole plate suqare
Depending on, the spacing of adjacent welds is 5 to 15mm.The structure is used as impeller bone by the way of metal wheel hub 7 and punched-plate welding
Frame 6 eliminates the process needed with melting and casting method precast framework, so that the method for production impeller becomes easy to be quick.Together
When, the composite ceramic material in impeller produced can improve the bond strength between material through entire metallic framework,
Keep its not easily to fall off.After impeller framework 6 is welded, to the position outer surface for needing to contact with composite ceramic material in the structure
Blasting treatment is carried out, which uses granularity for the white fused alumina sand of 8 to 16 mesh, and Metal Surface Roughness need to be made to reach
50um~100um, to improve the adhesive strength with composite casting ceramic material.After grit blasting operation, need to be cleaned with acetone
And the subsequent compressed air with drying carries out surface drying operation.
(3) impeller mold combines 3 assembly manipulations.
Impeller mold combination 3 includes inner conical surface mold 32, and preceding box cover die 33, outer gear mold 34, rear cover mould 35 is upper fixed
Position block 37, lower locating piece 37, upper positioning screw 38 and lower positioning bolt 381.The inner conical surface mold 32, preceding box cover die 33, outer gear
The material of mold 34, rear cover mould 35, upper locating piece 37 and lower locating piece 37 is cast aluminium.Aluminium-making mould weight ratio uses cast steel
Mold is light by 60% or more, is easy for installation and removal, and lowers labor intensity.And sprue 31 is set on inner conical surface mold 32.
When carrying out material feeding operation, impeller mold combination 3 is placed on platform along its axis, and inner conical surface mold 32 is close to and with flat at this time
Platform is in contact, and corresponding sprue 31 is located on rear cover mould 35 close to placement platform, corresponding exhaust outlet 351.This
When, impeller mold combination 3 can be placed on shaking platform when carrying out material feeding operation, then shaking platform is same in shot process
Shi Jinhang is opened, and then promotes the bubble discharge of the material in shot process, due to using " from bottom to top " and shaking platform
The mode of bubble is caught up with, mould strength is only subjected to the liquid-level pressure of mould material, instead of previous vacuum pouring or pressure casting
When also need to bear additional pressure, and the steel die that must be used improves the setting flexibility of die assembly, reduces
Production cost.
In carrying out assembling process, silicon is precoated on the thread 313 of the material feeding connector 311 at sprue 31 as shown in Figure 5
Oil release agent simultaneously screws in sprue 31.The precession direction of material feeding connector 311 is vertical with the baseplane of inner conical surface mold 32.And material feeding
The material of connector 311 is polystyrene material, and interior bone diameter 12mm to 18mm, external thread B11 are M20 standard thread,
Reach 15mm.Material feeding connector 311 is polystyrene material, is had from after release property, mould material solidification, can't be therewith
Bonding.During mold releasability, with the cured ceramic material below angle grinder truncation material feeding connector, material feeding connector 311 can
Easily to screw out simultaneously break away from moulds downwards, and release gap is formed in sprue 31, facilitates the solidification ceramics material above mold
Expect release from vertical direction demoulding.
In addition, each structure of mold in the die assembly is before assembly, needs to coat silicone oil mold release agent or wax release agent, keep away
Exempt to bond together with composite ceramic material.Then, inner conical surface mold 32 is placed on shaking platform by staff first, so
Box cover die 2 and outer gear mold 3 before successively assembling afterwards, as shown in figure 3, before the end of gear mold 3 towards preceding box cover die 2 is provided with outside
Lid is outer to keep off locating slot 341, to determine connection position, improves joint efficiency.Then the connection end of preceding box cover die is provided with corresponding fixed
Position convex block clamping is placed in outside front cover and keeps off in locating slot 341, to guarantee to connect sealing effect, as shown in the figure before box cover die 2 with it is outer
The junction of gear mold 3, which is provided with outside front cover, keeps off sealing ring 342.The connecting pin of corresponding inner conical surface mold 32 and preceding box cover die 33
Place can also carry out the setting of locating slot and sealing ring 314.Then prefabricated foaming core model 5 is inserted into together with outer diameter mold 4
The inner ring of outer gear mold 34, it is then fixed by clamping screw 9.Above-mentioned clamping screw 9 may be configured as 4 every layer, equal by circumference
Cloth.As shown in Fig. 2, clamping screw 9 divides for upper and lower 2 layers and amounts to 8.Lower locating piece 37 is placed in the inside of inner conical surface mold 32
In respective slot, and lower positioning bolt 381 is tightened, the wheel hub 7 of soldered impeller framework 6 is set in lower locating piece 37
On, and then by concave and convex platform location fit, i.e., as shown, lower locating piece be provided with towards wheel hub 7 it is compatible with its internal diameter
Boss, when being installed, which is located in wheel hub 7, to realize concave and convex platform location fit.Locating piece 36 is to wheel in placement
The top of hub 7, and with the upper part of wheel hub 7 also by concave and convex platform location fit as described above, that is, locating piece 36 is gone up towards wheel
The inside latus rectum of hub 7 is provided with the boss that internal diameter therewith matches, and carries out being arranged clamping.Then rear cover mould 35 is installed to
On upper locating piece 36, and locking positioning operation is carried out by upper locating rod 38, so that each mold piecemeal closely connects.The rear cover
Mold 35 is with the outer connection structure for keeping off mold 34 as shown in figure 4, i.e. rear cover mould 35 is that the junction of outer gear mold 4 is provided with
Locating slot 352 is kept off outside rear cover, outer gear mold 4 is provided with corresponding locating convex block.When being attached, it is kept off outside the rear cover
Locating slot 352 can realize guidance limit operation to interface channel, improve the connection accuracy between each die assembly, be subsequent
The quality of production provides safeguard.In addition, the junction, which is provided with outside rear cover, keeps off sealing ring 353, to improve the tightness of junction, such as
Shown in figure, the locating convex block of the outer gear mold 34 is provided with for placing the seal groove for keeping off mold 353 outside rear cover.Above-mentioned sealing ring
314, the setting that gear sealing ring 353 outside sealing ring 342 and rear cover is kept off outside front cover effectively prevents the leakage of casting slurry, improves
Product casting quality.Its material is silicon rubber.
(4) material feeding equipment connects
The blender 11 being located in mixing tank 1 is connected by staff with stirring motor 111, and mixing tank 1 is passed through
Vacuum valve 12 is connected with vacuum pump 121, and at the pipeline between vacuum valve 12 and mixing tank 1 be extended have vent valve
Door 13.The other end of the deflation valve 13 is connected with outside air.The conveying of the discharge outlet connection delivery pump 2 of mixing tank 1
Entrance, and inlet valve 14 is set in discharge outlet, and feed hopper 21 is set in conveying inlet, to improve structure stable connection
Property, guarantee powder feeding efficiency.For delivery pump 2 using screw pump is used, then motor 23 drives the transmission of the realization mixing of the screw rod pump housing 22, defeated
Send out the outlet port that mouth is screw pump.The screw rod pump housing 22 conveys the mode of material, is able to maintain steady and higher injection pressure
Power avoids in the past in material self weight casting process, the problem of cannot being adequately filled up by slype resistance in a mold.
Conveying outlet is connected to formation reflux mould group with mixing tank 1.The reflux mould group includes reflux line 15 and recovery channel 16.Return pipe
One end connection conveying outlet in road 15, the other end are connected to by return valve 151 with mixing tank 1, the reflux line 15 and mixing
The end of 1 connection of bucket is located remotely from the end face where mixing outlet.Usually guarantee that mould material passes through discharge port outflow,
It is usually arranged as position as shown in Figure 1, that is, is located at and is set to its lower end i.e. close to the position of ground level along device axis, be then poured
Material can smoothly enter into discharge port under gravity.The connection end of corresponding reflux line 15 and mixing tank 1 is set to
End of the mixing tank 1 far from ground level can also be then down to out by the mould material that reflux line 15 enters under the effect of gravity
At material mouth, and then guarantee that stablizing for reflux operation carries out.One end of the recovery channel 16 connects reflux line 15, other end connection
External reclaimer is provided with waste vaive 161 on the recovery channel 16.In addition, the conveying outlet of feeder motor 2 passes through discharging
Valve 25 and conveyance conduit 24 realize the connection with triple valve 26, at this time one end connection conveying outlet of conveyance conduit 24, the other end
The valve A of triple valve 26 is connected, the valve B and valve C of triple valve 26 are separately connected one end of two hoses 27.In the embodiment
The quantity of material feeding connector 311 is two, and the column joint that its lower part for exposing impeller mold combination 3 is diameter 24mm.Hose
27 other end set is connected on material feeding connector 311, the hose 27 that material feeding connector 311 passes through the locking connection triple valve 26 of clip 312.
Hose 27 is transparent polyurethane pressure hose.So far, material feeding equipment connection finishes.
(5) mould material prepares
The raw material of composite ceramics mould material is commercially available " sharp to think to open up (the heating of silicon carbide ceramics castable in the embodiment
Type) " or " sharp think of opens up aluminium oxide ceramics castable (heating type) ".The material contains host agent and curing agent, preceding according to certain using
After being mixed sufficiently chemical crosslink reaction occurs for ratio.Meanwhile the material is slow in 40 degrees Celsius of room temperature or less reactions, 12
Flowable liquid is remained in hour, needs natural retrogradation in 24 hours or more at immobilising gel.Material is being heated up to 80
After degree Celsius, reaction speed is accelerated, and is fully cured in 4 hours.Then casting process is in 24 hours, i.e., mould material is liquid
It is carried out under state room temperature, so that casting process has the sufficient operating time.Staff carries out precomputation to dosage first, in turn
Casting raw material are proportionally stirred and are sufficiently mixed, the mould material that mixing is completed then is poured into sealable mixing
In bucket 1.
(6) mould material vacuum pumping
Rotated 5 minutes or more at this point, staff starts the blender 11 that links of stirring motor 111 so that material host agent and
Curing agent is uniformly mixed.And then the inlet valve 14 on feeder motor 2 is opened, and close outlet valve 25 and waste vaive 161, it opens
Return valve 151.Then, staff opens delivery pump 2, and mould material can convey with reflux line 15 and be back to mixing tank 1
It is interior.
Staff closes the deflation valve 13 on mixing tank 1, opens vacuum valve 12, is then turned on the vacuum pump of connection
121, so that be vacuum degree being -0.2 to -0.4MPa in mixing tank 1, it is further continued for stirring and reflux continues 30 minutes or more, thus
The air entrapment of mixing tank 1, reflux line 15 and the mould material in delivery pump 2 is discharged.The mould material vacuumizes behaviour
Work carries out it during mixing mould material, then the entrained air bubbles inside mould material have been had been removed before material feeding,
Improve material feeding quality.
(7) material feeding operates
When material feeding is operated and opened, vacuum pump 121, stirring motor 111 and delivery pump 2 should be closed first, static two minutes,
Then vacuum valve 12 and return valve 151 are closed, and open deflation valve 13 and outlet valve 25.Then, staff will be defeated
Pump 2 is sent to open, then mould material is slowly transported to triple valve 26 " from bottom to top ", opens three valves of triple valve 26, pours
Note material is assigned on two material feeding connectors 311 by two hoses 27, into the material feeding passage of impeller mold combination 3, is then infused
Material operation starts.At the same time, shaking platform also opens work, is uniformly distributed after capable of being vibrated in injection process convenient for material
With each corner for being filled into mould cavity.Mould material slowly " from bottom to top " gradually fills mould cavity from mold bottom
Exhaust outlet 351 is risen to, finally has a small amount of spilling from exhaust outlet 351 to mould material, then closes delivery pump 2, closes threeway
Three valves on valve 26, and close outlet valve 14.The entire injection process time is about 30 minutes to 2 hours." from lower and
On " the jolt ramming effect of material feeding mode and shaking platform combine so that bubble is gradually rushed to above mold in die channel
Exhaust outlet 351, be unlikely to the secondary air that is mixed into mould material, eliminate and previous entire mold is needed to be placed on large size
The process flow of vacuum chamber, so that casting cost is greatly lowered, manufacturing schedule is accelerated.
After the completion of pouring operation, staff needs to recycle mould material and equipment cleaning operation.Firstly, work
Make personnel to open return valve 151 and waste vaive 161, later on delivery pump 2, then the residue in mixing tank 1 and in delivery pump 2
Mould material continues to be expelled in collected outside device with recovery channel 16, until internal remaining mould material is all discharged.?
Acetone or alcohol are continuously added in mixing tank 1, the inner wall of reflux line 15, recovery channel 16 and delivery pump 2 is rinsed in reflux, until
Meet cleaning standard.
(8) material feeding curing operation
Firstly, the sprue 31 for the impeller mold combination 3 that material feeding is completed is separated with conveyance conduit 24, and room temperature is quiet
It sets 24 hours or more.Then, impeller mold combination 3 is placed into baking oven and is heated to 60 degrees Celsius and continues to heat for 1 hour
Operation then heats to 80 degrees Celsius and continues operation cured above in 4 hours and completes.Material feeding operation is using casting length under room temperature
Time not cured material, does the two-stage process of heating cure again after material feeding, so that the operation difficulty of shot process declines,
The waste material cleaning of material is convenient, is conducive to personnel's shift of reasonable arrangement production workshop section.
(9) mould release operates
Into operating procedure (8) after the completion of mould material solidification, mould release operation is carried out.Firstly, should be first by impeller mould
Tool combination 3 is naturally cooling to room temperature, then loosens positioning screw 38, and successively unload rear cover mould 35 and upper locating piece 36,
All clamping screws 9 are then loosened, outer gear mold 4 is unloaded, pulls away outer diameter mold 34.Foaming in core model caulking groove position 41 at this time
Core model is partially destroyed separation.Then, remaining die assembly is overturn 180 degree by staff, and bottom surface upward and loosens lower positioning
Bolt 381, the hose 27 for then connecting material feeding connector 311 carry out cutoff process, with 311 lower section of angle grinder truncation material feeding connector
Cured ceramic material, and back out material feeding connector 311.Then, box cover die 33 before pulling away, pulls away inner conical surface mold 32, draws off
Lower locating piece 37, and with sharp instruments such as screwdrivers, it breaks and empties remaining foaming core model 5, complete mould release operation.
It the disassembly of above-mentioned each mold and pulls away, " anti-top fastening bolt ", " drawing horse ", " liquid can be used according to the actual situation
Present a theatrical performance as the last item on a programme " etc. tools and equipment auxiliary operation, above-mentioned auxiliary operation be all conventional method, be not detailed herein.
(10) details sanding operation
Extra composite ceramic material at staff's grinding wheel angle grinder polishing sprue 31, so that it is poured mouth structure
It is consistent with integral platform smooth, finally obtain composite ceramics double shrouded wheel finished product as shown in Figure 2.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of production method of the composite ceramics double shrouded wheel containing metallic framework, which is characterized in that operating procedure is as follows:
(1) impeller framework (6) are prepared: blade framework orifice plate (61), front cover framework orifice plate (62) and rear cover framework orifice plate
(63) cutting production, blade framework orifice plate (61), front cover framework orifice plate (62), rear cover framework orifice plate (63), skeleton are carried out
Support stick (64) and wheel hub (7) are welded into impeller framework (6), soldered impeller framework (6) to composite ceramic material
Contact site outer surface carries out blasting treatment, is cleaned using acetone to impeller framework (6) and carries out compressed air drying
Drying process；
(2) prepare outer diameter mold (4) and foam core model (5): outer diameter mold (4) carries out the setting of core model embedded slot (41) and placement
Into in production mould, core model raw material are injected in the production mould, form core model into foam process is crossed, and production are completed outer
Diameter mold (4) and foaming core model 5) it is separated with production mould；
(3) impeller mold combines (3) assembly manipulation: will precoat silicone oil on the thread (313) of the casting connector at sprue (31)
Release agent simultaneously screws in sprue (31), and inner conical surface mold (32) is placed on platform to and is sequentially connected preceding box cover die (33) and outer
It keeps off mold (34), the outer diameter mold (4) of production completion and foaming core model (5) is placed and are fixed in outer gear mold (34), impeller
Skeleton (6) is fixed in impeller mold combination (3) by upper locating piece (36) and lower locating piece (37), then by rear cover mould
(35) it is fixedly connected；
(4) material feeding equipment connects: being located at mixing tank (1) internal blender (11) and connect with stirring motor (111), by mixing tank
(1) corresponding deflation valve (13) is connected and is arranged with vacuum pump (121) by vacuum valve (12), by going out for mixing tank (1)
Material mouth connects delivery pump (2), and inlet valve (14) are arranged between discharge port and feeder motor (2), and delivery pump (2) transfer out
Mouth is connected to formation reflux mould group, while the conveying of delivery pump (2) with mixing tank (1) by reflux line (15), return valve (151)
Sprue (31) connection that (3) are combined with impeller mold is realized by outlet valve (25) and conveyance conduit (24) in outlet；
(5) mould material prepares: mould material is proportionally stirred and is sufficiently mixed, the casting material for then completing mixing
Material pours into mixing tank (1)；
(6) mould material vacuum pumping: opening stirring motor (111), stirring operation duration five minutes or more, is then turned on back
Stream mould group simultaneously closes deflation valve (13), opens vacuum valve (12) and vacuum pump (121), makes mixing tank (1) interior vacuum degree
It is -0.2 to -0.4MPa, continues stirring operation and reflux operation 30 minutes or more；
(7) material feeding operates: closing vacuum pump (121), stirring motor (111), delivery pump (2), vacuum valve (12) and return valve
(151), deflation valve (13) and outlet valve (25) are opened, is again turned on delivery pump (2), material feeding operation is carried out, until casting material
Material has a small amount of spilling from exhaust outlet (351), finally closes delivery pump (2) and outlet valve (25), and material feeding operation is completed；
(8) material feeding curing operation: the sprue (31) for the impeller mold combination (3) that material feeding is completed and conveyance conduit (24) point
From, and room temperature standing 24 hours or more, impeller mold combination (3) is placed into baking oven and is heated to 60 degrees Celsius and continues 1
Hour heating operation then heats to 80 degrees Celsius and continues operation cured above in 4 hours and completes；
(9) mould release operates: after the completion of mould material solidification, by impeller mold combination (3) and the composite ceramic for solidifying completion
Porcelain double shrouded wheel carries out lock out operation, obtains the composite ceramics double shrouded wheel of casting complete；
(10) details sanding operation: sanding operation is carried out to extra mould material using milling tools, composite ceramics is obtained and closes
Formula impeller finished product.
2. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1, feature exist
In conical surface mold (32) internal first, preceding box cover die (33), outer gear mould before impeller mold combination (3) is assembled in the step (3)
Have (34), outer diameter mold (4), rear cover mould (35), lower locating piece (37) and upper locating piece (36) and carries out silicone oil mold release agent or wax
The precoating of release agent operates.
3. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1 or 2, feature
It is, inner conical surface mold (32), preceding box cover die (33), outer gear mold (34), outer diameter mold (4), rear cover mould (35), lower positioning
The material of block (37) and upper locating piece (36) is cast aluminium.
4. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1, feature exist
In the delivery pump (2) is screw pump, and the conveying entrance passes through the mixing outlet of inlet valve (14) and mixing tank (1).
5. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1, feature exist
In the reflux mould group includes reflux line (15) and recovery channel (16), and one end of the reflux line (15) connects conveying
Outlet, the other end are connected to by return valve (151) with mixing tank (1), the end that the reflux line (15) is connected to mixing tank (1)
Portion is located remotely from the end face where mixing outlet, and one end of the recovery channel (16) connects reflux line (15), and the other end connects
External reclaimer is connect, is provided with waste vaive (161) on the recovery channel (16).
6. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1, feature exist
In the impeller mold combination (3) is located on shaking platform, and the central axis upright of the impeller mold combination (3) is in vibration
The placed side of platform, the sprue (31) of the impeller die set are located at close to the end of shaking platform, are carrying out step (7) material feeding
When operation, shaking platform is opened simultaneously.
7. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1 or 6, feature
Be, the sprue (31) is two, the triple valve (26) include valve A, valve B and valve C, the valve A with it is defeated
One end of pipeline (24) is sent to connect, the valve B and valve C pass through hose (27) respectively and be located at sprue (31) with two
It is poured interface (311) connection, the casting interface (311) is polystyrene material, and the casting interface (311) passes through clip
(312) connecting portion with hose (27) is locked.
8. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1, feature exist
In the operating procedure (7) further includes mould material recycling and equipment cleaning operation, and the mould material recycles and equipment cleaning
Operation includes the following steps: to open return valve (151) and waste vaive (16) after the completion of material feeding operation, open delivery pump (2),
It is all discharged to inside residue mould material；Acetone or alcohol are continuously added in mixing tank (1), reflux line is rinsed in reflux
(15), recovery channel (16) and delivery pump (2).
9. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1, feature exist
In outer diameter mold (4) plate thickness is 10mm to 50mm, and the outer surface diameter size of the outer diameter mold (4) immobilizes, institute
The inner surface diameter for stating outer diameter mold (4) is identical as the diameter of composite ceramics double shrouded wheel of production.
10. a kind of production method of composite ceramics double shrouded wheel containing metallic framework according to claim 1, feature exist
In the foaming core model (5) passes through pouring technology one-pass molding, the production raw material of foaming core model (5), according to parts by weight
Number, including 100 parts of polyether polyol, 0.1~0.5 part of water, 2~5 parts of silicone surfactant, tertiary amine catalyst 0.1~0.2
Part, 0.01~0.02 part of organotin catalysts, 10~20 parts of CFC-11 foaming agent, polyphenyl polymethylene polyisocyanates 100
Part, the hydroxyl value of the polyether polyol is 400~500mgKOH/g, and the polyether polyol is Aromatic Polyester Polyols, described
Tertiary amine catalyst be one of triethylene diamine, tetramethylethylened, triethanolamine or a variety of mixtures, it is described to have
Machine tin catalyst is one of stannous octoate, dibutyltin dilaurate, stannous oleate or a variety of mixtures.
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| CN113199772A (en) * | 2021-04-20 | 2021-08-03 | 戴克(天津)航空科技有限责任公司 | Remanufacturing process for inner end platform of guide stationary blade assembly at fan outlet of aircraft engine |
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| CN115837698A (en) * | 2022-11-30 | 2023-03-24 | 襄阳五二五泵业有限公司 | A vacuum forming equipment for silicon carbide composite ceramics |
| CN118478463A (en) * | 2024-06-25 | 2024-08-13 | 南通兴华达高实业有限公司 | Production equipment and method of environment-friendly colloid piece based on elevator |
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