CN104439059A - Production method of wax mold of hollow blade and mold used in production method - Google Patents

Production method of wax mold of hollow blade and mold used in production method Download PDF

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Publication number
CN104439059A
CN104439059A CN201410737529.1A CN201410737529A CN104439059A CN 104439059 A CN104439059 A CN 104439059A CN 201410737529 A CN201410737529 A CN 201410737529A CN 104439059 A CN104439059 A CN 104439059A
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China
Prior art keywords
core
parting
hollow blade
wax
mold
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CN201410737529.1A
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Chinese (zh)
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CN104439059B (en
Inventor
张锋林
贺峥嵘
王玉雷
刘杨
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AECC South Industry Co Ltd
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China National South Aviation Industry Co Ltd
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Priority to CN201410737529.1A priority Critical patent/CN104439059B/en
Publication of CN104439059A publication Critical patent/CN104439059A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02Lost patterns

Abstract

The invention provides a production method of a wax mold of a hollow blade. The production method comprises the following steps: step A, producing a mold core and arranging a core head on one side, corresponding to an opening end of an inner cavity, of the mold core; step B, producing a mold, wherein the mold comprises a first sub-mold and a second sub-mold, the first sub-mold is provided with at least three convex parts for supporting the mold core, and the second sub-mold is provided with a thimble which is movably connected and is used for fixing the mold core; step C, combining the mold and producing a wax mold blank of the hollow blade; and step D, repairing concave points formed by the thimble and the convex parts on the wax mold blank in the step C so as to finish the production of the wax mold of the hollow blade. By virtue of the production method of the wax mold of the hollow blade, provided by the invention, the corresponding wall thickness size of the inner cavity of the hollow blade which is produced by the wax mold and has the blind hole type inner cavity is stable and the precision is also easy to guarantee. The invention further provides the mold used in the method.

Description

A kind of method for manufacturing wax membrane of hollow blade and the mould of use thereof
Technical field
The present invention relates to casting field, particularly a kind of hollow blade for aero-engine manufacture method of wax-pattern of casting, present invention also offers the mould that said method uses.
Background technology
Fig. 1 is a kind of structural representation of hollow blade of aero-engine, shown in Figure 1, and in the part of aero-engine, have a kind of hollow blade 1 to have blind-hole type inner chamber 2, namely its inner chamber 2 only has one end open, and the other end is closed.In order to this hollow blade 1 of Foundry Production, need the previously prepared wax-pattern equally with blind-hole type inner chamber.The principle schematic of the wax-pattern of Fig. 2 needed for the hollow blade shown in shop drawings 1, shown in Figure 2, existing wax-pattern 3 manufacture method is the mode adopting " flowing core ", that is to say that core 4 openend forming inner chamber can be drawn a core print 41 and be located in mould (not shown), blind end is then unsettled, contactless with mold cavity, owing to needing to stay certain gap (0.05-0.1mm) when core print 41 mates with mould, so core 4 has certain activity in a mold, from location described core print 41 end more away from, the activity of core 4 is larger.Core 4 is very large in the swing of blind end, can reach 0.5mm, therefore very easily cause the wall thickness dimension that the inner chamber of wax-pattern 3 is corresponding overproof, thus the wall thickness dimension causing inner chamber 2 position of the hollow blade of final Foundry Production corresponding is overproof.Good way is not also had to address this problem at present.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method for manufacturing wax membrane of hollow blade and the mould of use thereof, to reduce or to avoid problem noted earlier.
For solving the problems of the technologies described above, the present invention proposes a kind of method for manufacturing wax membrane of hollow blade, it is for the manufacture of the wax-pattern of hollow blade with blind-hole type inner chamber, and it comprises the steps,
Steps A, makes core according to described inner cavity size, arranges a core print in the corresponding described lumen openings end side of described core;
Step B, mould is made according to described hollow blade outer profile size, described mould comprises the first parting for the formation of the die cavity consistent with described hollow blade outer profile size and the second parting that removably connect, described first parting and/or the second parting are provided with the locating slot for placing described core print, described first parting is provided with at least three for propping up the protuberance by described core, the wall thickness that the height of described protuberance is corresponding with the position of the described cavity that its contact position on described core is formed is equal, described second parting is provided with the thimble for fixing described core of a movable connection,
Step C, described core print is positioned in described locating slot, combine described first parting and/or described second parting, described core is made to be positioned at described die cavity, mobile described thimble makes described core and described protuberance compact siro spinning technology, and fixing described thimble, makes core described in described thimble and described protuberance stable holding, casting in described die cavity, manufactures the wax-pattern embryo of described hollow blade;
Step D, repairs the concave point that wax-pattern embryo in step C is formed by described thimble and described protuberance, completes the manufacture of the wax-pattern of described hollow blade.
Present invention also offers the mould that said method uses, it is for the manufacture of the wax-pattern of hollow blade with blind-hole type inner chamber, it comprises, a core corresponding with described inner cavity size, in described core corresponding described lumen openings end side, a core print is set, the first parting for the formation of the die cavity consistent with described hollow blade outer profile size removably connected and the second parting, described first parting and/or the second parting are provided with the locating slot for placing described core print, described first parting is provided with at least three for propping up the protuberance by described core, the wall thickness that the height of described protuberance is corresponding with the described empty cavity position that its contact position on core is formed is equal, described second parting is provided with the thimble for fixing described core of a movable connection.
The method for manufacturing wax membrane of a kind of hollow blade provided by the present invention, the hollow blade with blind-hole type inner chamber that the wax-pattern manufactured by it is produced, the wall thickness dimension that its inner chamber is corresponding is stablized, and precision is also easy to be protected.Present invention also offers the mould that said method uses.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein,
Fig. 1 is a kind of structural representation of hollow blade of aero-engine;
The principle schematic of the wax-pattern of Fig. 2 needed for the hollow blade shown in shop drawings 1;
The structural representation of the mould that the method for manufacturing wax membrane that Fig. 3 is a kind of hollow blade of a specific embodiment according to the present invention uses;
Fig. 4 is the structural principle schematic diagram of the first parting in Fig. 3;
Fig. 5 is the structural principle cross-sectional schematic of the second parting in Fig. 3.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.Wherein, identical parts adopt identical label.
Fig. 1 is a kind of structural representation of hollow blade of aero-engine; The structural representation of the mould that the method for manufacturing wax membrane that Fig. 3 is a kind of hollow blade of a specific embodiment according to the present invention uses; Fig. 4 is the structural principle schematic diagram of the first parting in Fig. 3; Fig. 5 is the structural principle cross-sectional schematic of the second parting in Fig. 3.Below for the hollow blade shown in Fig. 1, illustrate the method for manufacturing wax membrane of a kind of hollow blade provided by the invention.
Shown in Fig. 1,3-5, the invention provides a kind of method for manufacturing wax membrane of hollow blade, it is for the manufacture of the wax-pattern of hollow blade 1 with blind-hole type inner chamber 2, and it comprises the steps,
Steps A, makes core 4 ' according to described inner chamber 2 size, arranges a core print 41 ' in side, described core 4 ' corresponding described inner chamber 2 openend; Shown in core 4 ' can be made up of pottery, its precision and intensity are all better like this, and the shape of shown core print 41 ' can be cuboid, trapezoidal, cylinder or cone, its be mainly used in core 4 ' described in Primary Location in mould 5.
Step B, mould 5 is made according to described hollow blade 1 outer profile size, described mould 5 comprises the first parting 51 and the second parting 52 for the formation of the die cavity consistent with described hollow blade 1 outer profile size removably connected, described first parting 51 and/or the second parting 52 are provided with the locating slot for placing described core print 41 ', described first parting 51 is provided with at least three for propping up the protuberance 511 by described core 4 ', the wall thickness that the height of described protuberance 511 is corresponding with the position of its described cavity 2 that contact position is formed on described core 4 ' is equal, described second parting 52 is provided with the thimble 521 for fixing described core 4 ' of a movable connection,
Described protuberance 511 is accurately located by described core 4 ' for propping up, according to varying in size of described core 4 ', suitably can increase the quantity of described protuberance 511 to ensure accurate positioning, described thimble 521 is for firmly clamping described core 4 ' with described protuberance 511.The area that described thimble 521 contacts with described core 4 ' with described protuberance 511 is the smaller the better.
Described protuberance 511 can be welded on the metal needle in described first parting 51.
Described thimble 521 can be the screw be connected with described second parting 52 by screw thread.
Step C, described core print 41 ' is positioned in described locating slot, combine described first parting 51 and/or described second parting 52, described core 4 ' is made to be positioned at described die cavity, mobile described thimble 521 makes described core 4 ' and described protuberance 511 compact siro spinning technology, fixing described thimble 521, makes described thimble 521 and core 4 ' described in described protuberance 511 stable holding, casting in described die cavity, manufactures the wax-pattern embryo of described hollow blade 1;
The present invention and the maximum difference of prior art are just, multiple described protuberance 511 is provided with in die cavity, the wall thickness corresponding with the position of its described cavity 2 that contact position is formed on described core 4 ' due to the height of described protuberance 511 is equal, and the wall thickness on the wax-pattern embryo therefore produced can ensure and obtain good dimensional stability and precision.
Step D, repairs the concave point that wax-pattern embryo in step C is formed by described thimble 511 and described protuberance 521, completes the manufacture of the wax-pattern of described hollow blade 1.
Owing to suppressing the existence of thimble 511 and described protuberance 521 described in wax-pattern process, wax-pattern embryo made by step C will certainly leave concave point, but because described thimble 511 and described protuberance 521 are all similar to point cantact with the contact site of described core 4 ', therefore described concave point is small-sized, so only need to mend with sealing with wax by hand.
Present invention also offers the mould that said method uses, it is for the manufacture of the wax-pattern of hollow blade 1 with blind-hole type inner chamber 2, it comprises, a core 4 ' corresponding with described inner chamber 2 size, in side, described core 4 ' corresponding described inner chamber 2 openend, a core print 41 ' is set, the first parting 51 and the second parting 52 for the formation of the die cavity consistent with described hollow blade 1 outer profile size removably connected, described first parting 51 and/or the second parting 52 are provided with the locating slot for placing described core print 41 ', described first parting 51 is provided with at least three for propping up the protuberance 511 by described core 4 ', the height of described protuberance 511 is equal at the wall thickness that described cavity 2 position that the upper contact position of core 4 ' is formed is corresponding with it, described second parting 52 is provided with the thimble 521 for fixing described core 4 ' of a movable connection.
The method for manufacturing wax membrane of a kind of hollow blade provided by the present invention, the hollow blade with blind-hole type inner chamber that the wax-pattern manufactured by it is produced, the wall thickness dimension that its inner chamber is corresponding is stablized, and precision is also easy to be protected.Present invention also offers the mould that said method uses.
Although it will be appreciated by those skilled in the art that the present invention is described according to the mode of multiple embodiment, not each embodiment only comprises an independently technical scheme.So describe in description be only used to clear for the purpose of; description should integrally be understood by those skilled in the art, and regards technical scheme involved in each embodiment as the mode that mutually can be combined into different embodiment to understand protection scope of the present invention.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle, amendment and combination, all should belong to the scope of protection of the invention.

Claims (2)

1. a method for manufacturing wax membrane for hollow blade, it is for the manufacture of the wax-pattern of hollow blade with blind-hole type inner chamber, and it is characterized in that, it comprises the steps,
Steps A, makes core according to described inner cavity size, arranges a core print in the corresponding described lumen openings end side of described core;
Step B, mould is made according to described hollow blade outer profile size, described mould comprises the first parting for the formation of the die cavity consistent with described hollow blade outer profile size and the second parting that removably connect, described first parting and/or the second parting are provided with the locating slot for placing described core print, described first parting is provided with at least three for propping up the protuberance by described core, the wall thickness that the height of described protuberance is corresponding with the position of the described cavity that its contact position on described core is formed is equal, described second parting is provided with the thimble for fixing described core of a movable connection,
Step C, described core print is positioned in described locating slot, combine described first parting and/or described second parting, described core is made to be positioned at described die cavity, mobile described thimble makes described core and described protuberance compact siro spinning technology, and fixing described thimble, makes core described in described thimble and described protuberance stable holding, casting in described die cavity, manufactures the wax-pattern embryo of described hollow blade;
Step D, repairs the concave point that wax-pattern embryo in step C is formed by described thimble and described protuberance, completes the manufacture of the wax-pattern of described hollow blade.
2. the mould that uses of a method according to claim 1, it is characterized in that, it is for the manufacture of the wax-pattern of hollow blade with blind-hole type inner chamber, it comprises, a core corresponding with described inner cavity size, in described core corresponding described lumen openings end side, a core print is set, the first parting for the formation of the die cavity consistent with described hollow blade outer profile size removably connected and the second parting, described first parting and/or the second parting are provided with the locating slot for placing described core print, described first parting is provided with at least three for propping up the protuberance by described core, the wall thickness that the height of described protuberance is corresponding with the described empty cavity position that its contact position on core is formed is equal, described second parting is provided with the thimble for fixing described core of a movable connection.
CN201410737529.1A 2014-12-08 2014-12-08 Production method of wax mold of hollow blade and mold used in production method Active CN104439059B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105750491A (en) * 2016-04-25 2016-07-13 株洲中航动力精密铸造有限公司 Hollow blade wax mould forming die and hollow blade wall thickness control method
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
CN111036852A (en) * 2019-11-26 2020-04-21 中国科学院金属研究所 Method for positioning silicon-based ceramic core for single crystal/directional guide blade

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Publication number Priority date Publication date Assignee Title
JPS5411023A (en) * 1977-06-28 1979-01-26 Kubota Ltd Oneeteme molding method of vanishable core for precise casting
CN101380660A (en) * 2008-10-17 2009-03-11 贵州安吉航空精密铸造有限责任公司 Arc sleeve type casting die
CN101695741A (en) * 2009-10-30 2010-04-21 沈阳黎明航空发动机(集团)有限责任公司 Method for positioning mold core and mold shell of hollow blade
CN202199722U (en) * 2011-08-29 2012-04-25 贵州安吉航空精密铸造有限责任公司 Ceramic core casting wax mould profiling die
CN102802834A (en) * 2010-12-07 2012-11-28 西门子能源有限公司 Investment casting utilizing flexible wax pattern tool
CN103143682A (en) * 2013-04-01 2013-06-12 东方电气集团东方汽轮机有限公司 Mold core for manufacturing high-temperature alloy hollow blade
CN203737926U (en) * 2014-03-07 2014-07-30 贵州安吉航空精密铸造有限责任公司 Fusible pattern mould with positioning boss device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411023A (en) * 1977-06-28 1979-01-26 Kubota Ltd Oneeteme molding method of vanishable core for precise casting
CN101380660A (en) * 2008-10-17 2009-03-11 贵州安吉航空精密铸造有限责任公司 Arc sleeve type casting die
CN101695741A (en) * 2009-10-30 2010-04-21 沈阳黎明航空发动机(集团)有限责任公司 Method for positioning mold core and mold shell of hollow blade
CN102802834A (en) * 2010-12-07 2012-11-28 西门子能源有限公司 Investment casting utilizing flexible wax pattern tool
CN202199722U (en) * 2011-08-29 2012-04-25 贵州安吉航空精密铸造有限责任公司 Ceramic core casting wax mould profiling die
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CN203737926U (en) * 2014-03-07 2014-07-30 贵州安吉航空精密铸造有限责任公司 Fusible pattern mould with positioning boss device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105750491A (en) * 2016-04-25 2016-07-13 株洲中航动力精密铸造有限公司 Hollow blade wax mould forming die and hollow blade wall thickness control method
CN105750491B (en) * 2016-04-25 2017-11-14 株洲中航动力精密铸造有限公司 The forming die for wax pattern of hollow blade and the wall thickness control method of hollow blade
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
CN106392004B (en) * 2016-11-22 2019-07-02 株洲中航动力精密铸造有限公司 The wall thickness control method of hollow blade with blind hole inner cavity
CN111036852A (en) * 2019-11-26 2020-04-21 中国科学院金属研究所 Method for positioning silicon-based ceramic core for single crystal/directional guide blade
CN111036852B (en) * 2019-11-26 2021-04-30 中国科学院金属研究所 Method for positioning silicon-based ceramic core for single crystal/directional guide blade

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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan

Patentee after: China Hangfa South Industrial Co. Ltd.

Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan

Patentee before: China Southern Airlines Industry (Group) Co., Ltd.