CN105945220A - Molding method for wax mold with ceramic core - Google Patents
Molding method for wax mold with ceramic core Download PDFInfo
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- CN105945220A CN105945220A CN201610353998.2A CN201610353998A CN105945220A CN 105945220 A CN105945220 A CN 105945220A CN 201610353998 A CN201610353998 A CN 201610353998A CN 105945220 A CN105945220 A CN 105945220A
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- ceramic core
- wax
- datum mark
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- blade
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- 239000000919 ceramic Substances 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000000465 moulding Methods 0.000 title abstract description 14
- 238000007689 inspection Methods 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000007493 shaping process Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 abstract description 10
- 238000012797 qualification Methods 0.000 abstract description 4
- 239000001993 wax Substances 0.000 description 67
- 238000005516 engineering process Methods 0.000 description 7
- 238000005495 investment casting Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 244000044283 Toxicodendron succedaneum Species 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000011214 refractory ceramic Substances 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a molding method for a wax mold with a ceramic core. The molding method is characterized in that design structures of the wax mold and the ceramic core are determined according to a designed casting; an inspection datum point is determined on the designed ceramic core in a normal projection manner according to an outline inspection datum point of the designed casting; the inspection datum points on the designed casting and the ceramic core map to each other; the ceramic core is manufactured according to the design structure; the ceramic core is clamped in a wax mold mold through adopting locating dowels, with the determined inspection datum point on the ceramic core adopted as a supporting point; and liquid wax is injected into a cavity of the wax mold mold till the wax mold is molded, the locating dowels on the wax mold are removed, and locating holes in the wax mold are filled up. According to the molding method, the clamping locating accuracy of the ceramic core in the wax mold mold is effectively improved, the molded wax mold with the ceramic core has good molding quality, the rejection rate is effectively controlled, the qualification rate is increased, and the economy is good.
Description
Technical field
The present invention relates to mould molding technology, specifically a kind of band ceramic core shaping investment pattern method.
Background technology
In the precision casting process of foundry goods, losing wax hot investment casting is common technological measure；For hollow casting, the Key technology losing wax hot investment casting is design and manufactures matched band ceramic core wax-pattern.Hollow casting is numerous, existing as a example by the precision casting process of heavy combustion engine turbine stage hollow blade, is described in detail.
Heavy combustion engine turbine stage hollow blade is all to use to lose the manufacture molding of wax precision casting process, and concrete technical measures are: first, according to the hollow blade foundry goods of design, manufacture the refractory ceramics core with hollow blade foundry goods air cooling channel shape adjoining dimensions；Secondly, ceramic core clamping is put in the Wax mold meeting hollow blade foundry goods configuration design requirement, use injection moulding method the injection of wax liquid to be entered in the die cavity of Wax mold, and then wrap ceramic core, obtain the blade wax mould of band ceramic core；Then, suppress blade running gate system, and blade wax mould and blade running gate system are welded into wax tree；Then, use and be stained with the husky technique certain thickness ceramic shell mould in the surface-coated of wax tree of slurry pouring, treat that ceramic shell mould is fully dried, use dewaxing kettle to melt by the blade wax mould within ceramic shell mould, obtain the ceramic shell mould of band ceramic core, then residual wax roasting is fallen；Subsequently, by ceramic shell mould roasting to assigned temperature before casting, then pouring in ceramic shell mould by molten steel, after sufficiently cool, vibration removes the ceramic shell mould on Blade roughcast surface, and then obtains the Blade roughcast of band ceramic core；Finally, the alkali liquid corrosion that the ceramic core in Blade roughcast uses High Temperature High Pressure is dissolved, obtain hollow Blade roughcast eventually.
Be can clearly be seen that by abovementioned technology: a big key technology point of decision hollow blade foundry goods Forming Quality is the molding of band ceramic core wax-pattern, Forming Quality with ceramic core wax-pattern directly determines inner chamber size, overall dimensions and the wall thickness dimension of hollow blade foundry goods, the i.e. Forming Quality of band ceramic core wax-pattern and directly determines the formed precision of hollow blade foundry goods.
At present, the forming technique measure of band ceramic core wax-pattern is: first, according to the hollow blade foundry goods of design, manufactures the refractory ceramics core with hollow blade foundry goods air cooling channel shape adjoining dimensions；Secondly, by the process section (i.e. blade root core print and leaf plunger tip head) of ceramic core by ceramic core clamping in Wax mold, make between ceramic core and Wax mold inner chamber, to form the annular space space meeting design wax-pattern；Then, use injection moulding method the injection of wax liquid to be entered in the die cavity of Wax mold, obtain the blade wax mould of band ceramic core.These technical measures are when shaping investment pattern; it is to be realized by the process section of ceramic core by ceramic core Set and Positioning in Wax mold; owing to the process section of ceramic core easily deforms in the sintering process of ceramic core; so that carry out Set and Positioning with strained position; clamping precision cannot objective ensure, it will usually causes ceramic core Set and Positioning lack accuracy in Wax mold；In industry, in order to improve the low ceramic core of process section structure precision problem present in the Set and Positioning, it is typically the process section at ceramic core and wraps up paraffin paper, and then make ceramic core form flexible location in Wax mold, these technical measures cannot effectively solve the problem that ceramic core positioning precision in Wax mold is low, causing institute's molding wax-pattern cannot meet technical requirement on design, scrappage is high, less economical.
Summary of the invention
The goal of the invention of the present invention is: for particularity and the deficiency of existing forming technique of above-mentioned band ceramic core wax-pattern, it is provided that a kind of Forming Quality and the high band ceramic core shaping investment pattern method of qualification rate.
The technical solution adopted in the present invention is: a kind of band ceramic core shaping investment pattern method, the design structure of described wax-pattern and ceramic core determines according to the foundry goods of design, outline inspection datum mark according to designing cast, on the ceramic core of design, determine inspection datum mark with normal projection pattern, make the inspection datum mark on the foundry goods of design and ceramic core mutually map；Produce ceramic core according to design structure, check datum mark as the strong point determined by ceramic core, use shop bolt by ceramic core clamping in Wax mold；In the die cavity of Wax mold, inject wax liquid, to shaping investment pattern, remove the shop bolt on wax-pattern and fill up the hole, location on wax-pattern.
Preferably, according to the outline inspection datum mark of designing cast, on the Wax mold of coupling, determine the outline inspection datum mark of design wax-pattern with normal projection pattern, make the inspection datum mark on the foundry goods of design, wax-pattern and ceramic core mutually map；Producing ceramic core according to design structure, datum mark determined by ceramic core and Wax mold, as the strong point, uses shop bolt by ceramic core clamping in Wax mold.
Scale error, when determining inspection datum mark, is built up at the process section of ceramic core by described ceramic core.
Described ceramic core, in the clamping structure of Wax mold, has the auxiliary pin coordinating shop bolt clamping, and described auxiliary pin is distributed in the three dimensions outside ceramic core.Further, described auxiliary pin has resilient adjustment structure.
Preferably, described foundry goods is hollow blade；Outline inspection datum mark on described hollow blade is six, these six inspection datum marks are divided into three groups, first group be three, be distributed on convex surface or the intrados of blade, second group be two, be distributed on leading edge, the 3rd group be one, be distributed in Ye Dingshang.
The invention has the beneficial effects as follows:
1. the present invention is using normal subpoint on ceramic core of the outline inspection datum mark of designing cast as the strong point, so that the inspection datum mark on the foundry goods of design and ceramic core mutually map, unified, the strong point determined by ceramic core dependence forms Set and Positioning in Wax mold, so it is effectively increased ceramic core Set and Positioning precision in Wax mold, the band ceramic core wax-pattern making institute's molding has good Forming Quality, effectively control percent defective, improve qualification rate, good economy performance；
2. the present invention is using normal subpoint on ceramic core and on the Wax mold of coupling of the outline inspection datum mark of designing cast as the strong point, so that the foundry goods of design, inspection datum mark on wax-pattern and ceramic core mutually maps, unified, Set and Positioning is formed on strong point strong point determined by Wax mold determined by ceramic core dependence, so be conducive to reliable, ceramic core Set and Positioning precision Wax mold in is effectively greatly improved, and then make the band ceramic core wax-pattern of molding have reliable and good Forming Quality, qualification rate is largely increased, obvious economic, practical；
3. the band ceramic core shaping investment pattern of the present invention particularly suitable hollow blade foundry goods, in addition, also adapts to the band ceramic core shaping investment pattern of other hollow casting, applied range.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of a kind of band ceramic core wax-pattern-blade wax mould.
Fig. 2 is the arrangement schematic diagram of the outline inspection datum mark on hollow blade foundry goods (being fabricated by according to wax-pattern shown in Fig. 1).
Fig. 3 is the arrangement schematic diagram of the datum mark that the outline inspection datum mark of hollow blade foundry goods (being fabricated by according to wax-pattern shown in Fig. 1) is arranged on ceramic core with normal projection pattern.
Fig. 4 is based on datum mark shown in Fig. 3 makes ceramic core realize the structural representation of Set and Positioning in Wax mold.
Fig. 5 is that the exploded view-i.e. shop bolt of Fig. 4 is relative to ceramic core and the arrangement schematic diagram of Wax mold (only show mold cavity portion).
Code name implication in figure: 1 blade wax mould；11 wax-pattern blade roots；12 wax-pattern tenon portions；13 wax-pattern blade portions；14 wax-pattern blade backs；15 wax-pattern leaf basins；16 wax-pattern leading edges；17 wax-pattern aerofluxus limits；18 wax-pattern leaf tops；2 ceramic cores；21 blade root core prints；22 leaf plunger tip heads；23 Tao Xin leaf basins；24 Tao Xin blade backs；25 Tao Xin blade portions；3 Wax molds；4 shop bolts；5 auxiliary pins；A1, A2, A3 blade cambered surface datum mark；B1, B2 blade leading edge datum mark；C1 leaf top datum mark；A1 ', A2 ', A3 ' Tao Xin blade cambered surface datum mark；B1 ', B2 ' Tao Xin blade leading edge datum mark；C1 ' Tao Xin leaf top datum mark.
Detailed description of the invention
The present invention is the forming method of hollow casting band ceramic core wax-pattern in precision casting process, it is adapted to the band ceramic core shaping investment pattern of multiple hollow casting, including hollow blade foundry goods, now as a example by heavy combustion engine turbine stage hollow blade foundry goods (calling hollow blade foundry goods in the following text), in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment
1
Shown in Figure 1, the band ceramic core wax-pattern of present invention molding to be prepared is that hollow blade foundry goods loses the use of wax precision casting process, thus, should be matched with the technical requirement on design of hollow blade foundry goods with ceramic core wax-pattern, it is mainly made up of the blade wax mould 1 of coupling hollow blade foundry goods contour structures and the ceramic core 2 of coupling hollow blade core cavity structure；The physical dimension of blade wax mould 1 and ceramic core 2 carries out a certain proportion of amplification according to the design size of hollow blade foundry goods respectively, and ceramic core 2 axially wraps in blade wax mould 1.Blade wax mould 1 has wax-pattern blade root 11, wax-pattern blade portion 13 and wax-pattern leaf top 18；There is between wax-pattern blade root 11 and wax-pattern blade portion 13 the wax-pattern tenon portion 12 of radial protrusion；Wax-pattern blade portion 13 then has wax-pattern blade back 14, wax-pattern leading edge 16, wax-pattern leaf basin 15 and the wax-pattern aerofluxus limit 17 being sequentially circumferentially arranged.Ceramic core 2 has Tao Xin blade root, Tao Xin blade portion and Tao Xin leaf top, Tao Xin blade root, Tao Xin blade portion and Tao Xin leaf top are axially corresponding to be wrapped in blade wax mould 1, the end of Tao Xin blade root is process section-blade root core print 21, and the end at Tao Xin leaf top is process section-leaf plunger tip head 22；The process section (i.e. blade root core print 21 and leaf plunger tip head 22) at ceramic core 2 two ends two ends from blade wax mould 1 respectively expose.
For molding band ceramic core wax-pattern as shown in Figure 1, the technology used in the present invention means are:
Step 1. determines the design structure of matched blade wax mould and ceramic core according to the structure of the hollow blade foundry goods of design, and the design structure of blade wax mould and ceramic core should carry out certain proportion amplification on the basis of the hollow blade casting structure of design.
Step 2. is according to the technology requirement of hollow blade foundry goods, outline inspection on hollow blade foundry goods has six datum marks, these six inspection datum marks are divided into three groups to be distributed on hollow blade foundry goods, shown in Figure 2, wherein, first group is three, i.e. A1, A2 and A3, they are distributed on the intrados of hollow blade foundry goods blade (being referred to as blade cambered surface datum mark below), it is of course also possible to be in the convex surface of hollow blade foundry goods blade；Second group is two, i.e. B1 and B2, and they are distributed on the leading edge of hollow blade foundry goods (being referred to as blade leading edge datum mark below)；3rd group is one, i.e. C1, and it is distributed in the Ye Dingshang (below referred to leaf top datum mark) of hollow blade foundry goods.
Aforementioned six the outline inspection datum marks being had according to design hollow blade foundry goods, determine the outline inspection datum mark of design wax-pattern on the Wax mold of coupling with normal projection pattern.
In like manner, aforementioned six the outline inspection datum marks being had according to design hollow blade foundry goods, on the ceramic core of design, inspection datum mark is determined with normal projection pattern, shown in Figure 3, the i.e. opposite side in the Tao Xin leaf basin 23(Tao Xin blade portion 25 in the Tao Xin blade portion 25 of ceramic core 2 is Tao Xin blade back 24) upper formation Tao Xin blade cambered surface datum mark A1 ', A2 ' and A3 ', this Tao Xin blade cambered surface datum mark mutually maps with method line projection with the blade cambered surface datum mark of hollow blade foundry goods；Forming Tao Xin blade leading edge datum mark B1 ' and B2 ' on the Tao Xin leading edge in the Tao Xin blade portion 25 of ceramic core 2, this Tao Xin blade leading edge datum mark mutually maps with method line projection with the blade leading edge datum mark of hollow blade foundry goods；Forming Tao Xin leaf top datum mark C1 ' on the Tao Xin leaf top of ceramic core 2, this Tao Xin leaf top datum mark mutually maps with method line projection with the leaf top datum mark of hollow blade foundry goods；Foregoing ceramic core is when determining inspection datum mark, and reply ceramic core carries out dimension control, scale error is built up on the process section of ceramic core and near process section；
By the above-mentioned inspection datum mark according to design hollow blade foundry goods on Wax mold and ceramic core determined by datum mark, make the inspection datum mark on hollow blade foundry goods, wax-pattern and the ceramic core of design mutually map, the most unified.
Step 3. produces ceramic core 2 according to design structure；Wax mold 3 is produced according to design structure.
Step 4. sees shown in Fig. 4 and Fig. 5, due to according to the step 2 datum mark to determining method line projection on the ceramic core 2 manufactured by step 3 and Wax mold 3 respectively, the most then using datum mark determined by ceramic core 2 and Wax mold 3 as the strong point, use shop bolt 4 by ceramic core 2 clamping at Wax mold 3, specifically, shop bolt 4 is the six roots of sensation, one end of three shop bolts 4 connects the Tao Xin blade cambered surface datum mark of on ceramic core 2 respectively as the strong point, the other end of these three shop bolts 4 connects normal on Wax mold 3 respectively and projects datum mark as the strong point；One end of two shop bolts 4 connects the Tao Xin blade leading edge datum mark of ceramic core 2 respectively as the strong point, and the other end of these two shop bolts 4 connects on Wax mold 3 normal projection datum mark respectively as the strong point；Tao Xin leaf top datum mark on one end connection ceramic core 2 of a piece shop bolt 4 is as the strong point, and the other end of this root shop bolt 4 connects normal on Wax mold 3 and projects datum mark as the strong point；Aforementioned shop bolt 4 is the fixed pin of length；
Stability and reliability in order to ensure ceramic core 2 Set and Positioning in Wax mold 3, the auxiliary pin 5 that ceramic core 2 is carried out auxiliary clamping location it is additionally provided with in Wax mold 3, this auxiliary pin 5 uses the elastic construction (being mainly made up of, elastic component is usually helical spring) of scalable adjustment pedestal cylinder, push rod and elastic component therebetween；In the present embodiment, auxiliary pin 5 is the six roots of sensation, they are distributed in three dimensions (the i.e. X of ceramic core 2 outside ceramic core 2, Y, Z-direction) on, concrete, wherein three carry out Set and Positioning to ceramic core 2 from the Tao Xin blade back 24 of ceramic core 2, concrete, these three auxiliary pins 5 coordinate (in the three dimensions of the present embodiment with the shop bolt 4 on the Tao Xin blade cambered surface datum mark on ceramic core 2 in opposite directions, place is in z-direction), each shop bolt 4 auxiliary corresponding with on Tao Xin blade back 24 pin 5 on Tao Xin leaf basin 23 is in same axis (stylus pin nail axial) substantially；One carries out Set and Positioning to ceramic core 2 at the blade root core print 21 of ceramic core 2, and this root auxiliary pin 5 coordinates (in the three dimensions of the present embodiment, place is in the X direction) substantially in opposite directions with the shop bolt 4 on the Tao Xin leaf top datum mark of ceramic core 2；Other two carry out Set and Positioning to ceramic core 2 respectively at the blade root core print 21 of ceramic core 2 and leaf plunger tip head 22, and these two auxiliary pins 5 do not have the shop bolt 4(of correspondence in the three dimensions of the present embodiment, at them in the Y direction).
Step 5. connects wax liquid injecting systems on the Wax mold 3 of the good ceramic core 2 of Set and Positioning；Wax liquid is injected in the die cavity of Wax mold 3；To blade wax mould molding；Remove the shop bolt in blade wax mould, fill up the hole, location in blade wax mould with wax liquid, the blade wax mould 1 of band ceramic core 2 as shown in Figure 1.
Embodiment
2
Other content of the present embodiment is same as in Example 1, difference is: according to design hollow blade foundry goods test datum mark method line projection confirm time, only on the ceramic core of design, determine inspection datum mark with normal projection pattern, without determining inspection datum mark on the Wax mold of matched design wax-pattern, the inspection datum mark on the hollow blade foundry goods of design and ceramic core is so made mutually to map, the most unified, when ceramic core Set and Positioning, check datum mark as the strong point determined by ceramic core, use shop bolt Set and Positioning in Wax mold.
Various embodiments above only in order to the present invention to be described, is not intended to limit.Although the present invention being described in detail with reference to the various embodiments described above, it will be understood by those within the art that: the various embodiments described above still can be modified by the present invention, or wherein portion of techniques feature is carried out equivalent, and these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of the present invention.
Claims (6)
1. a band ceramic core shaping investment pattern method, the design structure of described wax-pattern and ceramic core determines according to the foundry goods of design, it is characterized in that: according to the outline inspection datum mark of designing cast, on the ceramic core of design, determine inspection datum mark with normal projection pattern, make the inspection datum mark on the foundry goods of design and ceramic core mutually map；Produce ceramic core according to design structure, check datum mark as the strong point determined by ceramic core, use shop bolt by ceramic core clamping in Wax mold；In the die cavity of Wax mold, inject wax liquid, to shaping investment pattern, remove the shop bolt on wax-pattern and fill up the hole, location on wax-pattern.
Band ceramic core shaping investment pattern method the most according to claim 1, it is characterized in that: according to the outline inspection datum mark of designing cast, on the Wax mold of coupling, determine the outline inspection datum mark of design wax-pattern with normal projection pattern, make the inspection datum mark on the foundry goods of design, wax-pattern and ceramic core mutually map；Producing ceramic core according to design structure, datum mark determined by ceramic core and Wax mold, as the strong point, uses shop bolt by ceramic core clamping in Wax mold.
Band ceramic core shaping investment pattern method the most according to claim 1 or claim 2, it is characterised in that: scale error, when determining inspection datum mark, is built up at the process section of ceramic core by described ceramic core.
Band ceramic core shaping investment pattern method the most according to claim 1 or claim 2, it is characterized in that: described ceramic core is in the clamping structure of Wax mold, having the auxiliary pin coordinating shop bolt clamping, described auxiliary pin is distributed in the three dimensions outside ceramic core.
Band ceramic core shaping investment pattern method the most according to claim 4, it is characterised in that: described auxiliary pin has resilient adjustment structure.
Band ceramic core shaping investment pattern method the most according to claim 1 or claim 2, it is characterised in that: described foundry goods is hollow blade；Outline inspection datum mark on described hollow blade is six, these six inspection datum marks are divided into three groups, first group be three, be distributed on convex surface or the intrados of blade, second group be two, be distributed on leading edge, the 3rd group be one, be distributed in Ye Dingshang.
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| CN201610353998.2A CN105945220B (en) | 2016-05-25 | 2016-05-25 | A kind of band ceramic core shaping investment pattern method |
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| CN201610353998.2A CN105945220B (en) | 2016-05-25 | 2016-05-25 | A kind of band ceramic core shaping investment pattern method |
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| CN106392004A (en) * | 2016-11-22 | 2017-02-15 | 株洲中航动力精密铸造有限公司 | Wall thickness control method for hollow blade provided with blind hole cavity |
| CN109356670A (en) * | 2018-11-16 | 2019-02-19 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of hollow blade cooling duct Assembly Interference phenomenon detection instrument and production method |
| CN109351912A (en) * | 2018-11-20 | 2019-02-19 | 安徽应流航源动力科技有限公司 | One kind is for adjusting engine blade ceramic core positioning mold and localization method |
| FR3076749A1 (en) * | 2018-01-15 | 2019-07-19 | Safran Aircraft Engines | PROCESS FOR PRODUCING A WAX MODEL FOR LOST WAX PROCESSING OF A METAL AIRCRAFT PART |
| CN111085661A (en) * | 2020-01-13 | 2020-05-01 | 成都航宇超合金技术有限公司 | Investment mold and method for manufacturing blade with complex cavity |
| CN112517854A (en) * | 2020-12-21 | 2021-03-19 | 贵阳航发精密铸造有限公司 | Ceramic core positioning method for manufacturing hollow turbine blade |
| CN112517853A (en) * | 2020-11-30 | 2021-03-19 | 中国科学院金属研究所 | Method for positioning ceramic core of guide blade of hollow turbine in mold |
| CN113414347A (en) * | 2021-07-01 | 2021-09-21 | 上海万泽精密铸造有限公司 | Method for controlling dimensional accuracy of hollow blade wax mold |
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| CN114130950A (en) * | 2021-12-08 | 2022-03-04 | 中国航发南方工业有限公司 | Blade shroud wax mold and turbine blade wax mold with shroud |
| CN115351224A (en) * | 2022-08-16 | 2022-11-18 | 江苏永瀚特种合金技术股份有限公司 | Method for solving problem of wall thickness of complex hollow single crystal blade |
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| CN114130950A (en) * | 2021-12-08 | 2022-03-04 | 中国航发南方工业有限公司 | Blade shroud wax mold and turbine blade wax mold with shroud |
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