CN109570444A - A kind of manufacturing process of complex-shaped surface mould stainless cast steel part - Google Patents
A kind of manufacturing process of complex-shaped surface mould stainless cast steel part Download PDFInfo
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- CN109570444A CN109570444A CN201811156533.3A CN201811156533A CN109570444A CN 109570444 A CN109570444 A CN 109570444A CN 201811156533 A CN201811156533 A CN 201811156533A CN 109570444 A CN109570444 A CN 109570444A
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- shaped surface
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- 229910001208 Crucible steel Inorganic materials 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000009415 formwork Methods 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 239000003110 molding sand Substances 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 238000010183 spectrum analysis Methods 0.000 claims description 6
- 238000009865 steel metallurgy Methods 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims description 2
- 238000012790 confirmation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000882 Ca alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- -1 i.e. Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003887 surface segregation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The present invention provides a kind of manufacturing process of complex-shaped surface mould stainless cast steel part, comprising the following steps: step 1, compacting wax-pattern；Step 2, the water-soluble core of removal；Step 3, design elements group tree technique；Step 4, shell processed；It is coated with slurry and molding sand；Step 5, melting；Step 6, cleaning are shaken after removing formwork under 3 ~ 5Mpa pressure with shake shell machine, are cut running channel and cast gate in mark position with cutting machine；Step 7, removal ceramic core.Combine water-soluble core auxiliary compacting wax-pattern using ceramic core, solve wax-pattern can not Problems in forming, and also can smoothly be produced by this scheme formwork.
Description
Technical field
The present invention relates to aviation model casting field, the manufacturing process of specifically a kind of complex-shaped surface mould stainless cast steel part.
Background technique
A kind of aviation stainless cast steel part of our factory development and production at present, type chamber is sufficiently complex, and wall is thin, size, fluorescence, x-
Ray requires height, and casting has shrinkage porosite after castable.
Using the scheme of existing forming, wax-pattern can not shape substantially.The existing forming arrangements of wax-pattern are as follows: 1. inner cavities are with largely
Loose piece assemble splicing.This scheme disadvantage are as follows: after the inner cavity a. is using the assembling of a large amount of loose piece, modulus is difficult, and presses wax low efficiency；
B. loose piece joining place forms a large amount of die parting line, can not repair and remove；C. complicated inner cavity is not easy to be stained with slurry hanging sand without legal system shell.2. inner cavity
All using the ceramic core auxiliary compacting wax-pattern of labyrinth.This scheme disadvantage is as follows: the compacting of a. ceramic core is difficult；B. cost mistake
It is high；C. ceramic core is excessively complicated, and ceramic core fracture is serious during the wax pressing process.
Summary of the invention
The static pressure of the molten aluminum of crystallization front when the technical problem to be solved by the present invention is to reduce aluminium and aluminium alloy casting,
Preferable cast surface quality is obtained, surface segregation layer or pile displacement are reduced.In addition, adjustable crystallization height of the invention is full
The different trades mark of foot cast demands, improve the utilization rate of crystallizer, reduce production cost.
The technical scheme is that
In order to solve the above technical problems, aluminium of the present invention and aluminum alloy low-pressure casting method comprise the following steps that:
A kind of manufacturing process of complex-shaped surface mould stainless cast steel part, it is characterised in that the following steps are included:
Step 1, compacting wax-pattern
After ceramic core and water-soluble core are put into mold corresponding position, then fixed ceramic core briquetting carries out wax-pattern compacting；
Step 2, the water-soluble core of removal
The wax-pattern suppressed is put into prepared solution and is dissolved, waits the water-soluble wax of wax-patterns to dissolve completely, further takes out wax
Mould cleans up in rinse bath；
Step 3, design elements group tree technique
Design corresponding part group tree process structure；
Step 4, shell processed
It carries out being coated with slurry and molding sand operation；
Step 5, melting
5.1 furnace charges prepare: master alloy used in this casting is without the stainless steel metallurgy material that uses；
The preheating of 5.2 formworks: formwork is placed in preheating in gas roasting furnace；1~2h is preheated under the conditions of 1050~1150 DEG C；
5.3 molten steel materials and treatment process:
Furnace charge be put into crucible all fusing after, weigh accounting melting batch be 0.1% stainless steel degasification slag former into
Row deslagging；0.1~0.3% electrolytic manganese of pre-deoxidant is added and carries out pre-deoxidation, followed by adding 0.05~0.15% ferrosilicon to carry out
Pre-deoxidation；2~3 slags of pre-deoxidation heel row add slag former protection heating；When being warming up to refining temperature, add 0.1~0.15% silico-calcium
Alloy carries out intermediate deoxidation；After arranging 1~2 slag again, sampling carries out spectrum analysis to alloy composition, and it is qualified to confirm to composition
Liquid steel temperature is adjusted to alloy tapping temperature afterwards；
5.4 casting process: molten steel is after the above deoxidation, slagging-off, spectrum analysis, thermometric are qualified, by preheated mould
Shell takes out from gas furnace, and the formwork in marked region is placed in sink after 1~2s of Quench, is placed in pallet, then with pouring
Note packet pours into molten steel in formwork；It is naturally cooled in pallet to formwork [40-100 DEG C], goes to area for clearance；
Step 6, cleaning
It is shaken under 3~5Mpa pressure with shake shell machine after removing formwork, is cut running channel and cast gate in mark position with cutting machine；
Step 7, removal ceramic core
Using alkali corrosion method, ceramic core is removed with strong base solution, required casting can be obtained after sandblasting.
Further improvement of these options, the solution in step 2 are as follows: the ratio of 36% concentrated hydrochloric acid and water is controlled [1/
4,1/3], used after dilution.
The chemical component of further improvement of these options, the stainless steel metallurgy material in step 5 needs to meet following model
Enclose requirement: C :≤0.12；Mn≤2；Si:≤1.5；P:≤0.04；S≤0.03；Ni:10~14；Cr:18~19.5；Cu:≤
0.75；Nb:10C~1.5；Mo:≤0.75；Ta≤0.05, clout Fe.
Further improvement of these options, formwork preheating temperature is at 1050~1150 DEG C in step 5, preheating time control
In 1~2h.
Further improvement of these options, uses 150KG intermediate frequency furnace material in step 5.3, and refining temperature 1670~
1680 DEG C, alloy tapping temperature is 1620~1640 DEG C.
Further improvement of these options, every Baogang's water time that formwork is completed from coming out of the stove to pouring into answers in step 5.4
Control is within 20s, in order to avoid molten steel oxidation.
Beneficial effect
1. using ceramic core combine water-soluble core auxiliary compacting wax-pattern, solve wax-pattern can not Problems in forming, and press this scheme
Formwork also can be produced smoothly.
2. inner cavity is smooth, modulus is convenient, and pressure wax is high-efficient
3. comparatively both easy, cost had been relatively low for pressure wax, shell processed and cleaning, easily guarantee quality
3. accelerating Local cooling speed with the method for the auxiliary that gets wet in casting process, part is made to form consecutive solidification, energy
Preferably ensure casting quality, while the yield rate of casting is high.
Detailed description of the invention
The existing complex-shaped surface mould stainless cast steel part main view of Fig. 1.
The side view of Fig. 2 Fig. 1.
The structural schematic diagram of upper mould in Fig. 3 present invention.
The structural schematic diagram of lower mould in Fig. 4 present invention.
The procedure chart of wax-pattern is suppressed in Fig. 5 present invention.
Fig. 6 part group tree process structure.
The technological parameter of Fig. 7 shell.
Fig. 8 needs to be placed on the formwork of Quench in sink.
Formwork after Fig. 9 cleaning.
Specific embodiment
Below with reference to specific drawings and examples, the invention will be further described.
As shown in figure 1-9, the wax-pattern forming arrangements of water-soluble core auxiliary and the auxiliary that gets wet are combined according to ceramic core of the present invention
Casting program is described below complex-shaped surface mould stainless cast steel part manufacturing process in conjunction with example:
Wherein various labels are as follows: for being vented, magnet insert 2 is used to that loose piece, ceramic core briquetting 3, thimble is sucked pin 1
5, sliding block 4, ceramic core 6, water-soluble core 7, lower die 8, get wet region 10, dotted line cutting line 11；
As shown in Figure 1, being a kind of complex-shaped surface mould stainless cast steel part sterogram and its cross-sectional view.The part is due to inner-cavity structure
Complexity, therefore wax-pattern forming difficulty.In addition, part thermal center is more since structure is complicated, need to add a large amount of cast gates, casting forming
Also relatively difficult.The improvement of scheme through the invention can effectively solve the problems, such as the casting forming, and ensure casting quality.
As shown in figure 1-9,
Step 1, compacting wax-pattern
After ceramic core 6 and water-soluble core 7 are put into mold corresponding position, then fixed ceramic core briquetting 3 carries out wax-pattern pressure
System；
Step 2, the water-soluble core 7 of removal
The wax-pattern suppressed is put into prepared solution and is dissolved, waits the water-soluble wax of wax-patterns to dissolve completely, further takes out wax
Mould cleans up in clear water rinse bath；
Step 3, design elements group tree technique
Design corresponding part group tree process structure；
Step 4, shell processed
Shell side formula processed by hand is taken, is coated with 7 layers of slurry and 6 stratotype sand altogether.
Step 5, melting
5.1 furnace charges prepare: master alloy used in this casting is without the stainless steel metallurgy material that uses；It is used in the present invention
It is the master alloy material of U.S. trade mark CRES 347, it is desirable that using 100% completely new material, i.e., alloy is not using preceding smelting；
The preheating of 5.2 formworks: formwork is placed in preheating in gas roasting furnace；1~2h is preheated under the conditions of 1050~1150 DEG C；
5.3 molten steel materials and treatment process:
After furnace charge is put into crucible all fusings, electronic scale weighs 0.1% stainless steel degasification slag former deslagging；It is added
0.1~0.3% electrolytic manganese of pre-deoxidant carries out pre-deoxidation, followed by the ferrosilicon progress pre-deoxidation for adding 0.05~0.15%；It is pre- de-
2~3 slags of oxygen heel row add slag former protection heating；When being warming up to refining temperature, add in the progress of 0.1~0.15% calcium-silicon
Between deoxidation；After arranging 1~2 slag again, sampling carries out spectrum analysis to alloy composition, by molten steel temperature after composition confirmation is qualified
Degree is adjusted to alloy tapping temperature；
Wherein stainless steel degasification slag former is general stainless steel degasification slag former, and the slag former of deslagging is after pre-deoxidation
Further deslagging, therefore the preferable deslagging agent of residue eliminating performance is used, common is Japanese Ishikawa deslagging agent, is used for casting factory
And the slagging-off of the casting solution surface of steel plant, it is ensured that casting solution does not contain impurity, oxidation is placed, but also as thermal insulating material
Material, there is outstanding performance.
5.4 casting process: molten steel is after the above deoxidation, slagging-off, spectrum analysis, thermometric are qualified, by preheated mould
Shell takes out from gas furnace, and the formwork in marked region is placed in sink after 1~2s of Quench, is placed in pallet, then with pouring
Note packet pours into molten steel in formwork；It is naturally cooled in pallet to formwork [40-100 DEG C], goes to area for clearance；
Step 6, cleaning
It is shaken under 3~5Mpa pressure with shake shell machine after removing formwork, with cutting machine in mark position, as shown in the figure, dotted line
Cutting line 11, running channel and cast gate are cut；
Step 7, removal ceramic core
Using alkali corrosion method, ceramic core 6 is removed with strong base solution, required casting can be obtained after sandblasting.
Further improvement of these options, the solution in step 2 are as follows: the ratio of 36% concentrated hydrochloric acid and water is controlled [1/
4,1/3], used after dilution, the ratio used in the present invention uses after dilution for the ratio of 1:3.
The chemical component of further improvement of these options, the stainless steel metallurgy material in step 5 needs to meet following model
Enclose requirement: C :≤0.12；Mn≤2；Si:≤1.5；P:≤0.04；S≤0.03；Ni:10~14；Cr:18~19.5；Cu:≤
0.75；Nb:10C~1.5；Mo:≤0.75；Ta≤0.05, clout are iron.
Further improvement of these options, formwork preheating temperature is at 1050~1150 DEG C in step 5, preheating time control
In 1~2h.
Further improvement of these options is poured in step 5.3 using 150KG intermediate frequency furnace, and refining temperature 1670~
1680 DEG C, alloy tapping temperature is 1620~1640 DEG C.
Further improvement of these options, every Baogang's water time that formwork is completed from coming out of the stove to pouring into answers in step 5.4
Control is within 20s, in order to avoid molten steel oxidation.
Finally it should be noted that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it, to the greatest extent
Pipe is described the invention in detail referring to example, those skilled in the art should understand that, it can be to of the invention
Technical solution is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be covered
In scope of the presently claimed invention.
Claims (6)
1. a kind of manufacturing process of complex-shaped surface mould stainless cast steel part, it is characterised in that the following steps are included:
Step 1, compacting wax-pattern
After ceramic core and water-soluble core are put into mold corresponding position, then fixed ceramic core briquetting carries out wax-pattern compacting；
Step 2, the water-soluble core of removal
The wax-pattern suppressed is put into prepared solution and is dissolved, waits the water-soluble wax of wax-patterns to dissolve completely, further takes out wax-pattern and exist
It is cleaned up in rinse bath；
Step 3, design elements group tree technique
Design corresponding part group tree process structure；
Step 4, shell processed
It carries out being coated with slurry and molding sand operation；
Step 5, melting
5.1 furnace charges prepare: master alloy used in this casting is without the stainless steel metallurgy material that uses；
The preheating of 5.2 formworks: formwork is placed in preheating in gas roasting furnace；1~2h is preheated under the conditions of 1050~1150 DEG C；
5.3 molten steel materials and treatment process:
After furnace charge is put into crucible all fusings, weighs the stainless steel degasification slag former that accounting melting batch is 0.1% and arranged
Slag；0.1~0.3% electrolytic manganese of pre-deoxidant is added and carries out pre-deoxidation, it is pre- de- followed by adding 0.05~0.15% ferrosilicon to carry out
Oxygen；2~3 slags of pre-deoxidation heel row add slag former protection heating；When being warming up to refining temperature, add 0.1~0.15% calcium-silicon
Carry out intermediate deoxidation；After arranging 1~2 slag again, sampling carries out spectrum analysis to alloy composition, will after composition confirmation is qualified
Liquid steel temperature is adjusted to alloy tapping temperature；
5.4 casting process: molten steel after the above deoxidation, slagging-off, spectrum analysis, thermometric are qualified, by preheated formwork from
It is taken out in gas furnace, the formwork in marked region is placed in sink after 1~2s of Quench, is placed in pallet, then uses pouring ladle
Molten steel is poured into formwork；It is naturally cooled in pallet to formwork [40-100 DEG C], goes to area for clearance；
Step 6, cleaning
It is shaken under 3~5Mpa pressure with shake shell machine after removing formwork, is cut running channel and cast gate in mark position with cutting machine；
Step 7, removal ceramic core
Using alkali corrosion method, ceramic core is removed with strong base solution, required casting can be obtained after sandblasting.
2. a kind of manufacturing process of complex-shaped surface mould stainless cast steel part according to claim 1, it is characterised in that: in step 2
Solution are as follows: the ratio of 36% concentrated hydrochloric acid and water control in [1/4,1/3], used after dilution.
3. a kind of manufacturing process of complex-shaped surface mould stainless cast steel part according to claim 1, it is characterised in that:
The chemical component of stainless steel metallurgy material in step 5 needs to meet following area requirement: C :≤0.12；Mn≤2；Si:≤
1.5；P:≤0.04；S≤0.03；Ni:10~14；Cr:18~19.5；Cu:≤0.75；Nb:10C~1.5；Mo:≤0.75；Ta
≤ 0.05, clout Fe.
4. a kind of manufacturing process of complex-shaped surface mould stainless cast steel part according to claim 1, it is characterised in that:
At 1050~1150 DEG C, preheating time controls in 1~2h formwork preheating temperature in step 5.
5. a kind of manufacturing process of complex-shaped surface mould stainless cast steel part according to claim 1, it is characterised in that: step 5.3
Middle to use 150KG intermediate frequency furnace material, 1670~1680 DEG C of refining temperature, alloy tapping temperature is 1620~1640 DEG C.
6. a kind of manufacturing process of complex-shaped surface mould stainless cast steel part according to claim 1, it is characterised in that: step 5.4
In every Baogang's water time that formwork is completed from coming out of the stove to pouring into should control within 20s, in order to avoid molten steel oxidation.
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| CN201811156533.3A CN109570444A (en) | 2018-09-30 | 2018-09-30 | A kind of manufacturing process of complex-shaped surface mould stainless cast steel part |
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| CN201811156533.3A CN109570444A (en) | 2018-09-30 | 2018-09-30 | A kind of manufacturing process of complex-shaped surface mould stainless cast steel part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774531A (en) * | 2020-06-16 | 2020-10-16 | 北京百慕航材高科技有限公司 | Shell preparation method |
| CN112605342A (en) * | 2020-12-15 | 2021-04-06 | 鹰普航空科技有限公司 | Forming method of small-sized thin-wall stainless steel casting with complex cavity |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6119763A (en) * | 1997-10-16 | 2000-09-19 | Bridgestone Sports Co., Ltd. | Method for preparing golf ball mold |
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| CN112605342A (en) * | 2020-12-15 | 2021-04-06 | 鹰普航空科技有限公司 | Forming method of small-sized thin-wall stainless steel casting with complex cavity |
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