CN106734881A - A kind of method for preventing smart casting machine casket wax-pattern deformation - Google Patents
A kind of method for preventing smart casting machine casket wax-pattern deformation Download PDFInfo
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- CN106734881A CN106734881A CN201611200214.9A CN201611200214A CN106734881A CN 106734881 A CN106734881 A CN 106734881A CN 201611200214 A CN201611200214 A CN 201611200214A CN 106734881 A CN106734881 A CN 106734881A
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- wax
- pattern
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- deformation
- casting machine
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A kind of method for preventing smart casting machine casket wax-pattern deformation disclosed by the invention, including：Wax-pattern and its mold shape are determined according to case structure, locating piece is set on mould；Pressure wax is carried out to mould and obtains wax-pattern, between the locating piece of wax-pattern embedded reinforcement be connected carry out it is structure-reinforced；Wax-pattern is removed from the molds and is detected；Then running gate system, rising head are welded on wax-pattern；Shell processed, pouring cast part and heat treatment are finally carried out, casing is obtained after cleaning.A kind of method for preventing smart casting machine casket wax-pattern deformation of the invention just considers wax-pattern deformation in die design stage, design reinforcement and reserved locating piece, ready reinforcement is assembled in wax-pattern is further taken out on wax-pattern, so as to control wax-pattern to deform, finally solve the problems, such as wax-pattern texturing quality present in heavy duty gas turbine casing production process, which simplify operating process, the risk that wax-pattern school type brings is reduced；And school pattern tool and frock need not be again fabricated separately, save production cost.
Description
Technical field
The invention belongs to precision casting technology field, and in particular to a kind of method for preventing smart casting machine casket wax-pattern deformation.
Background technology
Casing as one of part that heavy duty gas turbine working environment is most severe, structure is most complicated, be mostly by 1/2,
1/4th, 1/6 round structure is combined, and its dimension precision requirement is high, complex structure, wall thickness variation big, internal soundness requirement is tight
, easily there is deformation during essence casting in lattice.The casting deformation of smart casting process generally by wax-pattern deformation, shell deformation, contraction distortion,
Heat treatment deformation etc. causes.
It is the first step for preventing casting deformation to prevent wax-pattern from deforming, and wax-pattern deformation is solved at present most of to preparing
The method that wax-pattern is corrected using frock, the method has the following disadvantages：1. calibration model frock and correction risk need to be fabricated separately
It is very big, easily cause wax-pattern problems of crack；2. correction time is long, operating process is complicated；3. some baroque wax-patterns cannot
It is corrected.
Both at home and abroad certain research, such as Application No. are also expanded for preventing casing wax-pattern from deforming
2015206180493rd, the applying date is that August in 2015 17 days, Authorization Notice No. are that 205043078U, authorized announcement date are 2016
24 days 2 months, it is entitled《A kind of profiling fixture for preventing model casting wax-pattern from deforming》Chinese patent prevent from melting there is provided one kind
The profiling fixture of die cast wax-pattern deformation, in order to solve wax-pattern in cooling procedure, irregular placement causes appearance each
Plant Direction distortion；The Application No. 2015107629362, applying date is on November 11st, 2015, Publication No. 105290327, public affairs
Open day on 2 3rd, 2016, it is entitled《A kind of method for controlling large complicated block cast casing wax-pattern deformation》Chinese patent carry
A kind of method for controlling large complicated block cast casing wax-pattern deformation is supplied, it carries out dimension correction by correcting mold to wax-pattern,
Meet wax-pattern and side ovality, the requirement of the size of axiality be installed up and down, shrinkage factor according to wax material and combine the upper and lower of the wax part
The actual, measured dimension of side inner side wax-pattern is installed, suitable correcting pattern working surface diameter size is chosen.But above-mentioned patent
Purport is have to carry out school type by school pattern again after wax-pattern deformation, without just preventing wax-pattern from becoming in the shaping investment pattern stage
Shape.
The content of the invention
It is an object of the invention to provide a kind of method for preventing smart casting machine casket wax-pattern deformation, which simplify operating process,
And solve the problems, such as wax-pattern texturing quality present in heavy duty gas turbine casing production process.
The technical solution adopted in the present invention is：A kind of method for preventing smart casting machine casket wax-pattern deformation, comprises the following steps：
The first step, the structure for casing is analyzed, and determines shaping investment pattern technique；
Second step, the shape mould adaptable with it is made according to wax-pattern shape, and multiple locating pieces are set on mould；
3rd step, the mould to making carries out pressure wax operation and obtains wax-pattern, has on wax-pattern and determining that mould is adapted
Position block；
4th step, between the locating piece of wax-pattern embedded reinforcement be connected carry out it is structure-reinforced；
5th step, will be removed from the molds by structure-reinforced wax-pattern, and whether detection wax-pattern each several part size is qualified；
6th step, if wax-pattern each several part size qualification, running gate system, rising head are welded on wax-pattern；
7th step, shell processed, pouring cast part and heat treatment are carried out using the wax-pattern being welded, and casing casting is obtained after cleaning
Whether part, measurement casing casting dimension is qualified.
The features of the present invention is also resided in,
3rd step also includes subsequent step：The upper mould and each several part loose piece of mould are removed respectively after after wax-pattern cooling.
In 4th step between the locating piece of wax-pattern embedded reinforcement be connected carry out it is structure-reinforced after, going back at abutment joint is carried out
Soldering.
Also it is attached by bracing piece between embedded reinforcement in 4th step.
The beneficial effects of the invention are as follows：A kind of method for preventing smart casting machine casket wax-pattern deformation of the invention is in existing wax-pattern system
Make on the basis of process experiences, wax-pattern deformation is just considered in die design stage, design reinforcement and reserved locating piece,
First upper mould and each several part loose piece are taken out during follow-up making wax-pattern, ready reinforcement is assembled in wax is further taken out on wax-pattern
Mould, so as to control wax-pattern to deform, finally solves wax-pattern texturing quality present in heavy duty gas turbine casing production process and asks
Topic, which simplify operating process, reduces the risk that wax-pattern school type brings；And school pattern tool and work need not be again fabricated separately
Dress, has saved production cost.
Brief description of the drawings
Fig. 1 is the locating piece position using a kind of wax-pattern obtained in a kind of method for preventing smart casting machine casket wax-pattern from deforming of the present invention
Put schematic diagram；
Fig. 2 is the structural representation after wax-pattern insertion reinforcement in Fig. 1；
Fig. 3 is strengthened using another wax-pattern insertion obtained in a kind of method for preventing smart casting machine casket wax-pattern from deforming of the present invention
Structural representation after muscle.
In figure, 1. wax-pattern, 2. locating piece, 3. reinforcement, 4. bracing piece.
Specific embodiment
A kind of method for preventing smart casting machine casket wax-pattern deformation that the present invention is provided, comprises the following steps：
The first step, the structure for casing is analyzed, and determines the moulding process such as shape, the size of wax-pattern；
Second step, the shape mould adaptable with it is made according to wax-pattern shape, and multiple locating pieces are set on mould；
3rd step, the mould to making carries out pressure wax operation and obtains wax-pattern, has on wax-pattern and determining that mould is adapted
Position block, removes the upper mould and each several part loose piece of mould after after wax-pattern cooling respectively；
4th step, embedded reinforcement is connected between the locating piece of wax-pattern carries out structure-reinforced, is welded at abutment joint
Treatment；
Preferably, in order to more strengthen the structure of wax-pattern, also connected by bracing piece mutually between embedded reinforcement
Connect, to cause that supporting construction is more consolidated.
5th step, will be removed from the molds by structure-reinforced wax-pattern, and whether detection wax-pattern each several part size is qualified；
6th step, if wax-pattern each several part size qualification, running gate system, rising head are welded on wax-pattern；
7th step, shell processed, pouring cast part and heat treatment are carried out using the wax-pattern being welded, and casing casting is obtained after cleaning
Whether part, measurement casing casting dimension is qualified.
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Embodiment 1
The present embodiment is used for essence casting c-type gas turbine support case, and it is combined by 1/6 circle, its casing Wall-Thickness Difference
It is different big, subregion wall thickness only 3~4mm, easily shedding deformation during production.The moulding process of wax-pattern 1 is determined according to casing shape,
Shape according to wax-pattern 1 and then mold shape is determined and mould is made, offer multiple on mould during making sets for card
The locating piece 2 of reinforcement 3, locating piece 2 is depressed in die surface, pressure wax operation is then carried out to mould and obtains wax-pattern 1, wax-pattern 1
On also there is the locating piece 2 that is adapted to mold shape, position, size, after after the cooling of wax-pattern 1 by the upper mould and each several part of mould
Loose piece is removed respectively, and embedded reinforcement 3 is connected between the locating piece 2 of wax-pattern 1, is carried out by bracing piece 4 between reinforcement 3
It is fixed, it is further structure-reinforced to carry out to wax-pattern 1, prevent wax-pattern 1 from deforming, and then follow-up smart foundry work sequence is influenceed, to wax-pattern 1
Upper reinforcement 3 carries out soldering with the seam crossing of locating piece 2, then will be removed from the molds by structure-reinforced wax-pattern 1,
Detection wax-pattern each several part size complies fully with design requirement, and then running gate system, rising head are welded on wax-pattern 1, finally utilizes
The wax-pattern 1 being welded carries out shell processed, pouring cast part and heat treatment, and casing casting is obtained after cleaning.
As shown in figure 1, this method considers to place reinforcement position and devise locating piece in wax-pattern and mold design, press
Wax is penetrated after wax and treats wax-pattern cooling, reinforcement is assembled on wax-pattern before wax-pattern is taken out, then overall takes out wax-pattern, wax-pattern dress
Enter the combination diagram after reinforcement as shown in Figure 2.Using the c-type gas turbine support case that the above method is produced, sat through three
Mark and reverse scanning detection, dimensional accuracy comply fully with design requirement.
Embodiment 2
The present embodiment is used for essence casting c-type gas turbine support case, and it is combined by 1/4 circle, is easily become during production
Shape.Using processing method same as Example 1, the combination after reinforcement 3 and bracing piece 4 is embedded in the locating piece 2 of its wax-pattern 1
Schematic diagram as shown in figure 3, the reinforcement 3 and bracing piece 4 effectively prevent wax-pattern deformation, the casting that final production is obtained is through three seats
Mark and reverse scanning detection, dimensional accuracy comply fully with design requirement.
Claims (4)
1. a kind of method for preventing the deformation of smart casting machine casket wax-pattern, it is characterised in that comprise the following steps：
The first step, the structure for casing is analyzed, and determines shaping investment pattern technique；
Second step, the shape mould adaptable with it is made according to wax-pattern shape, and multiple locating pieces are set on the mould；
3rd step, the mould to making carries out pressure wax operation and obtains wax-pattern, has and the mould phase on the wax-pattern
The locating piece of adaptation；
4th step, between the locating piece of the wax-pattern embedded reinforcement be connected carry out it is structure-reinforced；
5th step, will be removed from the molds by the structure-reinforced wax-pattern, detect whether the wax-pattern each several part size closes
Lattice；
6th step, if the wax-pattern each several part size qualification, running gate system, rising head are welded on the wax-pattern；
7th step, shell processed, pouring cast part and heat treatment are carried out using the wax-pattern being welded, and casing casting is obtained after cleaning
Whether part, measurement casing casting dimension is qualified.
2. a kind of method for preventing smart casting machine casket wax-pattern deformation as claimed in claim 1, it is characterised in that the 3rd step is also
Including subsequent step：The upper mould and each several part loose piece of the mould are removed respectively after after wax-pattern cooling.
3. a kind of method for preventing smart casting machine casket wax-pattern deformation as claimed in claim 1, it is characterised in that in the 4th step
Between the locating piece of the wax-pattern embedded reinforcement be connected carry out it is structure-reinforced after, going back carries out soldering at abutment joint.
4. a kind of method that as shown in claim 1 prevents smart casting machine casket wax-pattern deformation, it is characterised in that in the 4th step
Also it is attached by bracing piece between embedded reinforcement.
Priority Applications (1)
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|---|---|---|---|
| CN201611200214.9A CN106734881A (en) | 2016-12-22 | 2016-12-22 | A kind of method for preventing smart casting machine casket wax-pattern deformation |
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|---|---|---|---|
| CN201611200214.9A CN106734881A (en) | 2016-12-22 | 2016-12-22 | A kind of method for preventing smart casting machine casket wax-pattern deformation |
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| CN201611200214.9A Pending CN106734881A (en) | 2016-12-22 | 2016-12-22 | A kind of method for preventing smart casting machine casket wax-pattern deformation |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377872A (en) * | 2017-06-28 | 2017-11-24 | 株洲中航动力精密铸造有限公司 | Casing wax mould profiling die and die mould method |
| CN108213345A (en) * | 2018-03-02 | 2018-06-29 | 沈阳飞机工业（集团）有限公司 | A kind of " C " shape perforated wall is thicker than crossing violent Al-Cu line aluminium alloy Melt casting deformation control methods |
| CN108620539A (en) * | 2017-12-21 | 2018-10-09 | 贵州安吉航空精密铸造有限责任公司 | A kind of investment casting method with complex-curved shape casting |
| CN109290515A (en) * | 2018-11-23 | 2019-02-01 | 沈阳航发精密铸造有限公司 | The large complicated ring-like Thin-Wall Outer Casing wax-pattern splicing tooling of one kind and wax-pattern manufacturing process |
| CN109317613A (en) * | 2018-11-16 | 2019-02-12 | 中国科学院金属研究所 | A kind of shell preparation method preventing orientation coupon bending deformation |
| CN109332589A (en) * | 2018-11-14 | 2019-02-15 | 中国船舶重工集团公司第十二研究所 | A kind of essence casting formwork preparation method of large-scale complex thin-wall casing |
| CN111468676A (en) * | 2020-05-19 | 2020-07-31 | 贵州安吉航空精密铸造有限责任公司 | Preparation method of integral wax mold of large-scale closed annular casing casting |
| CN113600746A (en) * | 2021-08-23 | 2021-11-05 | 中国航发沈阳黎明航空发动机有限责任公司 | Split combined type large thin-wall bearing casing wax mold |
| CN114192741A (en) * | 2021-12-15 | 2022-03-18 | 中国航发动力股份有限公司 | Bending size correction method for turbine blade |
| CN115041630A (en) * | 2022-06-29 | 2022-09-13 | 中国航发动力股份有限公司 | Method for correcting wax mold of turbine blade with adjustable sectioning surface |
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| RU1775213C (en) * | 1990-07-09 | 1992-11-15 | Симское агрегатное производственное объединение | Pattern unit for hollow casting in ceramic moulds |
| CN101530892A (en) * | 2009-03-31 | 2009-09-16 | 宁波通达精密铸造有限公司 | Investment casting thin-walled part casting method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377872A (en) * | 2017-06-28 | 2017-11-24 | 株洲中航动力精密铸造有限公司 | Casing wax mould profiling die and die mould method |
| CN107377872B (en) * | 2017-06-28 | 2020-07-24 | 中国航发南方工业有限公司 | Cartridge case wax mould pressing mold and pressing method |
| CN108620539A (en) * | 2017-12-21 | 2018-10-09 | 贵州安吉航空精密铸造有限责任公司 | A kind of investment casting method with complex-curved shape casting |
| CN108620539B (en) * | 2017-12-21 | 2020-06-23 | 贵州安吉航空精密铸造有限责任公司 | Investment casting method for casting with complex curved surface shape |
| CN108213345B (en) * | 2018-03-02 | 2019-10-08 | 沈阳飞机工业（集团）有限公司 | A kind of Al-Cu system investment-casting deformation control method that the wall thickness transition of " C " shape is violent |
| CN108213345A (en) * | 2018-03-02 | 2018-06-29 | 沈阳飞机工业（集团）有限公司 | A kind of " C " shape perforated wall is thicker than crossing violent Al-Cu line aluminium alloy Melt casting deformation control methods |
| CN109332589A (en) * | 2018-11-14 | 2019-02-15 | 中国船舶重工集团公司第十二研究所 | A kind of essence casting formwork preparation method of large-scale complex thin-wall casing |
| CN109317613A (en) * | 2018-11-16 | 2019-02-12 | 中国科学院金属研究所 | A kind of shell preparation method preventing orientation coupon bending deformation |
| CN109290515B (en) * | 2018-11-23 | 2020-06-16 | 中国航发沈阳黎明航空发动机有限责任公司 | Wax mold splicing tool and wax mold forming method for large complex annular thin-wall casing |
| CN109290515A (en) * | 2018-11-23 | 2019-02-01 | 沈阳航发精密铸造有限公司 | The large complicated ring-like Thin-Wall Outer Casing wax-pattern splicing tooling of one kind and wax-pattern manufacturing process |
| CN111468676A (en) * | 2020-05-19 | 2020-07-31 | 贵州安吉航空精密铸造有限责任公司 | Preparation method of integral wax mold of large-scale closed annular casing casting |
| CN113600746A (en) * | 2021-08-23 | 2021-11-05 | 中国航发沈阳黎明航空发动机有限责任公司 | Split combined type large thin-wall bearing casing wax mold |
| CN114192741A (en) * | 2021-12-15 | 2022-03-18 | 中国航发动力股份有限公司 | Bending size correction method for turbine blade |
| CN115041630A (en) * | 2022-06-29 | 2022-09-13 | 中国航发动力股份有限公司 | Method for correcting wax mold of turbine blade with adjustable sectioning surface |
| CN115041630B (en) * | 2022-06-29 | 2023-10-20 | 中国航发动力股份有限公司 | Wax mould correction method for turbine blade with adjustable sub-section |
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Application publication date: 20170531 |