CN106513585A - Blade labyrinth molding method - Google Patents

Blade labyrinth molding method Download PDF

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Publication number
CN106513585A
CN106513585A CN201611026802.5A CN201611026802A CN106513585A CN 106513585 A CN106513585 A CN 106513585A CN 201611026802 A CN201611026802 A CN 201611026802A CN 106513585 A CN106513585 A CN 106513585A
Authority
CN
China
Prior art keywords
blade
wax
comb tooth
mould
ceramic core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611026802.5A
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Chinese (zh)
Other versions
CN106513585B (en
Inventor
谭喜平
周婧
闫彬
陈雅
吴广
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AECC South Industry Co Ltd
Original Assignee
Zhuzhou Air China Power Precision Is Cast With Limit Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Zhuzhou Air China Power Precision Is Cast With Limit Co filed Critical Zhuzhou Air China Power Precision Is Cast With Limit Co
Priority to CN201611026802.5A priority Critical patent/CN106513585B/en
Publication of CN106513585A publication Critical patent/CN106513585A/en
Application granted granted Critical
Publication of CN106513585B publication Critical patent/CN106513585B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • B22C9/04Use of lost patterns
    • B22C9/043Removing the consumable pattern

Abstract

The invention discloses a blade labyrinth molding method. The blade labyrinth molding method comprises the steps that labyrinths on a blade are subjected to pouring molding through a dewaxing technology, a ceramic core molding blade wax mold formed through matching of the lade labyrinths and labyrinth grooves in a wax mold is implanted in the dewaxing casting technology, and a ceramic core is consistent with the labyrinth grooves formed between the labyrinths on the blade in shape; and after the sprue blade wax mold which has the feeding capacity to an edge plate and a blade body is pressed on the machining end faces of the ceramic core and the blade, a blade wax mold assembly implanted into the ceramic core is subjected to mold assembly to form an annular pouring system for subsequent coating shell making. By adoption of the lade labyrinth molding method, the phenomena that the labyrinths of the blade wax mold are not fully filled in the wax filling process, and the blade labyrinths are distorted in the wax solidification process are avoided, and in addition, the mold shell strength at the blade labyrinths in the shell making process is improved, and the phenomena that steel leakage occurs between the labyrinths, and feeding dead heads between the blade labyrinths accelerate mechanical machining tool losses are avoided.

Description

Blade comb tooth forming method
Technical field
The present invention relates to blade processing field, especially, is related to a kind of blade comb tooth forming method.
Background technology
At present, blade comb tooth forming method is method directly using wax-pattern coating molding, is deposited using this forming method In following shortcoming:The comb tooth of blade wax mould occurs the discontented phenomenon of filling in wax material filling process and blade comb tooth is solidified in wax material During deform twisted phenomena;Thin-walled, deep narrow slot comb tooth are during shell processed because form strength is inadequate (at thin-walled narrow slot) And the problems such as make blade comb between cog bleed-out occur;The problems referred to above can cause blade undesirable and scrap.Additionally, remaining in If the feeding head between blade comb teeth groove deals with the loss of easy acceleration mechanical process tool improperly.Therefore need design one kind badly and be suitable to leaf The method of piece comb tooth molding, is filled with improving the wax-pattern at the blade comb tooth in existing employing wax-pattern coating molding blade comb tooth technology Type is difficult or comb tooth at wax-pattern distort problem, because form strength not enough occurs at thin-walled, the integral shroud comb tooth of deep narrow slot Bleed-out phenomenon and remain in the problem of the fragile process tool of feeding head between blade comb teeth groove.
The content of the invention
The invention provides a kind of blade comb tooth forming method, to solve existing employing wax-pattern coating molding blade comb tooth skill Distortion that blade wax mould in art comb tooth in wax material filling process fills that type is difficult and comb tooth deforms in wax material process of setting Problem, because form strength not enough bleed-out phenomenon occurs and remains in blade comb teeth groove at thin-walled, the integral shroud comb tooth of deep narrow slot Between the fragile process tool of feeding head technical problem.
The technical solution used in the present invention is as follows:
A kind of blade comb tooth forming method, carries out moulding by casting using wax-loss casting process to the comb tooth on blade, loses wax The ceramic core formed blades wax of the molding that cooperates with the blade comb tooth and comb teeth groove in Wax mold is implanted in casting technique Mould, ceramic core are consistent with the shape of the teeth groove that comb between cog on blade is formed, and in ceramic core and blade comb tooth processing end face On suppress the blade wax mould of the sprue that there is feeding capacity to listrium and blade after, then will implantation ceramic core blade wax Die combination carries out supplying follow-up paint case making after group mould forms Circular Pouring System.
Further, the inventive method includes:
Corresponding ceramic core is processed by the comb tooth parameter of blade to be processed;
The compressing blade wax mould of ceramic core is implanted in blade wax mould mould;
Formwork is obtained in the blade wax mould assembly shell processed of coating of implantation ceramic core;
Dewaxing treatment is carried out to formwork;
The moulding by casting in the formwork die cavity;
Remove formwork and depoling obtains semi-finished product;
The unnecessary dead head of cutting obtains finished product.
Further, in the step of compressing blade wax mould, press on the processing end face of ceramic core and blade comb tooth Make the sprue that there is feeding capacity to listrium and blade.
Further, the step of compressing blade wax mould and the step of paint case making between also include to be implanted into ceramic mould The step of blade wax mould of core carries out group mould and forms Circular Pouring System.
Further, ceramic core is compressing.
Further, made using many coatings of refractory material Jing in paint case making step.
Further, carrying out dewaxing treatment to formwork is melted out wax for heating.
The invention has the advantages that:
Blade comb tooth forming method of the present invention, by ceramic core is implanted between the comb teeth groove in blade wax mould to blade comb tooth Wax-pattern carry out molding, filling is discontented and blade comb tooth can effectively to suppress the comb tooth of blade wax mould to occur in wax material filling process Deform in wax material process of setting the problem of distortion;Additionally, the blade comb tooth forming method with the present invention can improve blade Form strength at comb teeth groove, being effectively prevented place between comb teeth groove causes comb between cog bleed-out occur now because form strength is inadequate As;Can be also effectively prevented with the blade comb tooth forming method of the present invention remain in the feeding head of blade comb between cog to machinery plus The loss of work cutter;Wax-pattern of the blade comb tooth forming method of the present invention to comb tooth of the solution with features such as thin-walled, deep narrow slots Form strength at molding and comb tooth not enough and increases the problem of listrium and the feeding capacity at blade, remains in blade comb teeth groove If between feeding head deal with improperly and break the particularly problematic of process tool, with extensive application value.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages. Below with reference to accompanying drawings, the present invention is further detailed explanation.
Description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of preferred embodiment of the present invention blade comb tooth forming method;
Fig. 2 is structural representation of the preferred embodiment of the present invention using ceramic core formed blades comb tooth;
Fig. 3 is the structural representation of the integral shroud comb tooth of preferred embodiment of the present invention Leaf;
Fig. 4 is the structural representation using traditional method formed blades comb tooth.
Description of reference numerals:
1st, integral shroud;2nd, comb tooth;3rd, ceramic core;4th, sprue;5th, remain rising head.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
The preferred embodiments of the present invention provide a kind of blade comb tooth forming method, using wax-loss casting process on blade Comb tooth carry out moulding by casting, in wax-loss casting process implantation with Wax mold in blade comb tooth and comb teeth groove cooperate into The ceramic core formed blades wax-pattern of type, wherein, the shape of the comb teeth groove that the present embodiment ceramic core is formed with comb between cog on blade Shape correspondence is consistent, and suppresses on the ceramic core and blade comb tooth processing end face and have feeding capacity to listrium and blade Sprue blade wax mould after, then the blade wax mould for being implanted into the ceramic core carried out into group mould formed after Circular Pouring System For follow-up paint case making;Avoid the bleed-out problem that the form strength of comb inter-tooth slots during traditional shell processed not enough occurs; Also effectively prevent the loss for remaining in the feeding head acceleration mechanical process tool between blade comb teeth groove.
The present embodiment carries out molding to the wax-pattern of blade comb tooth by being implanted into ceramic core, can effectively suppress blade wax mould There is filling in wax material filling process discontented and blade comb tooth and deforms in wax material process of setting the problem of distortion in comb tooth; Additionally, the form strength at shell process Leaf comb tooth processed can also be improved using the blade comb tooth forming method of the present invention, effectively Prevent at comb inter-tooth slots because form strength not enough causes comb between cog bleed-out phenomenon occur;The blade comb tooth molding side of the present invention Method to solve the features such as thin-walled, deep narrow slot comb tooth shaping investment pattern and comb teeth groove between form strength not enough and remain in leaf If the feeding head between piece comb teeth groove is dealt with improperly and breaks the particularly problematic of process tool, with extensive popularization and application Value.
With reference to Fig. 1, the present embodiment forming method includes:
Step S100, processes corresponding ceramic core by the comb tooth parameter of blade to be processed;In the present embodiment, by general Method press ceramic core, in this not go into detail, wherein, ceramic core need to carry out adding according to comb tooth parameter to be processed Work, and ensure that machining accuracy meets technological requirement.
Step S200, is put into the compressing wax-pattern of ceramic core in blade wax mould mould;The present embodiment is by blade Wax mold is implanted into ceramic core formed blades wax-pattern corresponding with the teeth groove of blade comb tooth, improves the comb tooth of blade wax mould Occur filling discontented and blade comb tooth in wax material filling process to deform in wax material process of setting the problem of distortion;And should Moulding process also effectively increases the form strength at comb tooth, it is to avoid traditional forming method is at the thin-walled narrow slot because formwork is strong Not caused enough the bleed-out phenomenon of degree;If the moulding process can also avoid the feeding head for remaining in blade comb between cog in which imitate simultaneously Deal with improperly and the phenomenon of acceleration mechanical process tool loss.
Step S300, obtains formwork in the assembly shell processed of coating of the blade wax mould of implantation ceramic core;In this step Made using many coatings of refractory material Jing, refractory material can be using quartz sand, bauxite etc..
Step S400, carries out dewaxing treatment to formwork;Heating in high temperature environments is melted out wax.
Step S500, the comb tooth on moulding by casting blade in formwork die cavity;General pouring forming technology is adopted herein, Will not be described here.
Step S600, removes formwork and depoling obtains semi-finished product;The present embodiment removes cast(ing) surface after smelting and pouring Formwork, obtains semi-finished product using universal method depoling.
Step S700, cuts unnecessary dead head and obtains finished product.
Preferably, in step S200, suppress to listrium and blade tool on ceramic core and blade comb tooth processing end face There is the sprue of feeding capacity.The present embodiment blade comb tooth forming method can directly utilize ceramic core in wax material process of setting While forming comb tooth again can direct pressing go out to comb the sprue on tooth top, reduce artificial in comb between cog in assembled wax-pattern Wax-pattern on set up the operation of sprue, its operation is more simple, convenient, while sprue herein also increases smelting and pouring During to the feeding capacity at blade and integral shroud listrium, solve blade and the loose problem of integral shroud listrium portion faces;Furthermore, The forming method of the present embodiment directly can have thin-walled, deep narrow slot, the comb without features such as allowance using Tao Xin core mouldings Tooth, without the need for the shaping efficiency for carrying out machining, improve comb tooth to comb tooth, shortens the production cycle.
Preferably, in order to improve working (machining) efficiency, in the present embodiment, the step of compressing blade wax mould (i.e. step S200) Also include for the assembly of the blade wax mould of implantation ceramic core carrying out group between (i.e. step S300) the step of paint case making The step of mould forms Circular Pouring System, by adopting Circular Pouring System, it is possible to achieve the once synchronization to multiple blades is poured Note processing.
Fig. 2 shows structural representation of the present embodiment using ceramic core formed blades comb tooth, wherein, the integral shroud of blade 1 is provided with compressing on multiple comb teeth 2, the tooth socket fit between ceramic core 3 and comb tooth 2, and ceramic core 3 and comb tooth 2 Sprue 4.Fig. 3 shows the structure of the integral shroud 1 and comb tooth 2 of molding rear blade, and the comb tooth with deep narrow slot is formed between comb tooth 2 Groove.Fig. 4 remains the structural representation of rising head 5 in showing existing wax-pattern coating molding blade comb tooth technology.
Blade comb tooth forming method of the present invention, by ceramic core is implanted between the comb teeth groove in blade wax mould to blade comb tooth Wax-pattern carry out molding, filling is discontented and blade comb tooth can effectively to suppress the comb tooth of blade wax mould to occur in wax material filling process Deform in wax material process of setting the problem of distortion;Additionally, the blade comb tooth forming method using the present invention can also be improved Form strength at shell process Leaf comb tooth processed, being effectively prevented at comb inter-tooth slots not enough causes comb between cog because of form strength There is bleed-out phenomenon;Wax-pattern of the blade comb tooth forming method of the present invention to comb tooth of the solution with features such as thin-walled, deep narrow slots Form strength at molding and comb tooth not enough and increases the problem of feeding capacity at listrium, blade, and the residual of blade comb between cog is mended The fragile machining tool of contracting rising head it is particularly problematic;With extensive application value.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (7)

1. a kind of blade comb tooth forming method, it is characterised in that the comb tooth on blade is poured into a mould using wax-loss casting process Molding, is implanted into the ceramic mould of the molding that cooperates with the blade comb tooth and comb teeth groove in Wax mold in the wax-loss casting process Core formed blades wax-pattern, the ceramic core are consistent with the shape of the teeth groove that comb between cog on blade is formed, and in the ceramic mould After the blade wax mould of the sprue that there is feeding capacity to listrium and blade is suppressed on core and blade comb tooth processing end face, then will The blade wax mould assembly for being implanted into the ceramic core carries out supplying follow-up paint case making after group mould forms Circular Pouring System.
2. blade comb tooth forming method according to claim 1, it is characterised in that methods described includes:
Corresponding ceramic core is processed by the comb tooth parameter of blade to be processed;
The compressing blade wax mould of the ceramic core is implanted in blade wax mould mould;
Formwork is obtained in the blade wax mould assembly for being implanted into ceramic core shell processed of coating;
Dewaxing treatment is carried out to formwork;
The moulding by casting in the formwork die cavity;
Remove formwork and depoling obtains semi-finished product;
The unnecessary dead head of cutting obtains finished product.
3. blade comb tooth forming method according to claim 2, it is characterised in that
In the step of compressing blade wax mould, it is right to suppress on the processing end face of the ceramic core and blade comb tooth Listrium and blade have the sprue of feeding capacity.
4. blade comb tooth forming method according to claim 3, it is characterised in that
Also include implantation ceramic core between the step of the step of compressing blade wax mould and the paint case making The step of blade wax mould carries out group mould and forms Circular Pouring System.
5. blade comb tooth forming method according to claim 2, it is characterised in that
The ceramic core is compressing.
6. blade comb tooth forming method according to claim 2, it is characterised in that
Made using many coatings of refractory material Jing in the paint case making step.
7. blade comb tooth forming method according to claim 2, it is characterised in that
It is described dewaxing treatment is carried out to formwork for heating be melted out wax.
CN201611026802.5A 2016-11-22 2016-11-22 blade comb tooth forming method Active CN106513585B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611026802.5A CN106513585B (en) 2016-11-22 2016-11-22 blade comb tooth forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611026802.5A CN106513585B (en) 2016-11-22 2016-11-22 blade comb tooth forming method

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CN106513585A true CN106513585A (en) 2017-03-22
CN106513585B CN106513585B (en) 2018-09-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107716863A (en) * 2017-09-12 2018-02-23 东方电气集团东方汽轮机有限公司 A kind of combustion engine turbine bucket casting method

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Publication number Priority date Publication date Assignee Title
CN1765543A (en) * 2004-10-29 2006-05-03 联合工艺公司 Investment casting cores and methods
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
CN101992268A (en) * 2010-11-20 2011-03-30 沈阳工业大学 Preparation process of high-temperature alloy multigang hollow turbine blade
CN102102373A (en) * 2009-12-18 2011-06-22 韩庆贤 Wear-resistant raking tooth for railway sieve cleaner and manufacturing process thereof
CN102802834A (en) * 2010-12-07 2012-11-28 西门子能源有限公司 Investment casting utilizing flexible wax pattern tool
CN103586413A (en) * 2013-11-18 2014-02-19 中国南方航空工业(集团)有限公司 Precision casting method for multi-cavity structural part
CN104325090A (en) * 2014-11-24 2015-02-04 沈阳黎明航空发动机(集团)有限责任公司 Positioning method of ceramic core of turbine blade with block-cast cover plate structure
CN104493081A (en) * 2014-12-09 2015-04-08 南京航空航天大学 Wax injection mold for investment casting of hollow turbine blades and method for rapidly manufacturing wax injection mold
WO2016034802A1 (en) * 2014-09-04 2016-03-10 Snecma Method for producing a ceramic core

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1765543A (en) * 2004-10-29 2006-05-03 联合工艺公司 Investment casting cores and methods
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
CN102102373A (en) * 2009-12-18 2011-06-22 韩庆贤 Wear-resistant raking tooth for railway sieve cleaner and manufacturing process thereof
CN101992268A (en) * 2010-11-20 2011-03-30 沈阳工业大学 Preparation process of high-temperature alloy multigang hollow turbine 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
CN103586413A (en) * 2013-11-18 2014-02-19 中国南方航空工业(集团)有限公司 Precision casting method for multi-cavity structural part
WO2016034802A1 (en) * 2014-09-04 2016-03-10 Snecma Method for producing a ceramic core
CN104325090A (en) * 2014-11-24 2015-02-04 沈阳黎明航空发动机(集团)有限责任公司 Positioning method of ceramic core of turbine blade with block-cast cover plate structure
CN104493081A (en) * 2014-12-09 2015-04-08 南京航空航天大学 Wax injection mold for investment casting of hollow turbine blades and method for rapidly manufacturing wax injection mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107716863A (en) * 2017-09-12 2018-02-23 东方电气集团东方汽轮机有限公司 A kind of combustion engine turbine bucket casting method

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Effective date of registration: 20190701

Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan

Patentee after: China Hangfa South Industrial Co. Ltd.

Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan

Patentee before: Zhuzhou Air China power precision is cast with limit company