CN103639366A - Preparation method for U-shaped hole in casting - Google Patents

Preparation method for U-shaped hole in casting Download PDF

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Publication number
CN103639366A
CN103639366A CN201310427538.6A CN201310427538A CN103639366A CN 103639366 A CN103639366 A CN 103639366A CN 201310427538 A CN201310427538 A CN 201310427538A CN 103639366 A CN103639366 A CN 103639366A
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CN
China
Prior art keywords
shaped hole
shaped
hole
foundry
foundry goods
Prior art date
Application number
CN201310427538.6A
Other languages
Chinese (zh)
Inventor
曲迎东
秦刚
高民强
蒋立鹏
金美玲
李荣德
尤俊华
Original Assignee
沈阳工业大学
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 沈阳工业大学 filed Critical 沈阳工业大学
Priority to CN201310427538.6A priority Critical patent/CN103639366A/en
Publication of CN103639366A publication Critical patent/CN103639366A/en

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Abstract

The invention relates to the casting field, and especially relates to a preparation method for a U-shaped hole in casting. Molding is carried out according to a designed casting structure. A U-shaped hole core is prepared from fibers with high temperature resistance and a metal skeleton, or painting for casting is painted uniformly on a metal skeleton to prepare a U-shaped hole core. The size of the U-shaped hole core is the same as the size of the shaped hole. The U-shaped hole core is placed in the mold during the pouring process. After the casting is taken out, the U-shaped hole core is drawn out, and a U-shaped hole meeting the curvature radius of design requirements can be obtained. The preparation method is advantageous in that, the problem that a U-shaped hole cannot be cast through a conventional casting method is solved.

Description

The preparation method in U-shaped hole in a kind of foundry goods

Technical field

The present invention designs casting field, particularly a kind of high-temperature fibre or foundry facing of utilizing, the method in the U-shaped hole of moulding different curvature on foundry goods.

Background technology

The moulding in U-shaped hole is that common machining or traditional sand mould casting method is all difficult to realize, therefore, on parts, U-shaped hole forming is generally divided into two classes at present: a kind of is electron Beam Machining, utilize the principle of electron beam deflection in magnetic field, make it in inside workpiece deflection, can process fine U-shaped hole.By controlling speed and the magnetic field intensity of electron beam, can control radius of curvature.Yet this kind of method working (machining) efficiency is lower, if the processing larger hole of diameter, processing cost will be very expensive; Another kind is to adopt metal winding pipe (this metal winding pipe is identical with casting material) as U-shaped Kong Xin, then by the U-shaped hole of casting.But this kind of method must strictly be controlled casting of metals temperature, once the higher or misoperation of pouring temperature design, metal winding pipe may be fused, and causes workpiece to scrap.If pouring temperature design is too low, may cause metal winding pipe and metallic matrix associativity bad, be unfavorable for equally workpiece quality.The present invention propose to utilize high-temperature fibre or with metallic matrix wellability and the poor foundry facing of reactivity worth, as the surfacing of U-shaped Kong Xin, utilize fusing point than the large metal of metallic matrix the framework material as Kong Xin.In casting process, this U-shaped Kong Xin is inserted to preexisting hole position fixing in type; Take out after foundry goods, this U-shaped hole core is extracted out, can be met the U-shaped hole of designing requirement radius of curvature.Superiority of the present invention has been to solve the problem that routine casting method can not cast out U-shaped hole.

Summary of the invention

For above-mentioned technical problem, object of the present invention provides a kind of method of utilizing high-temperature fibre or foundry facing and the metallic framework U-shaped hole of moulding on foundry goods, it adopts and metal wellability and reactive all bad high-temperature fibres or the foundry facing surfacing as U-shaped Kong Xin, the higher metallic framework of intensity is as the framework material of U-shaped Kong Xin, after not only can guaranteeing that foundry goods is cooling, U-shaped hole core can be extracted out smoothly, can also guarantee that hole wall chemical composition does not change, the U-shaped hole of moulding better quality.

The object of the invention is to be achieved through the following technical solutions:

A. by high-temperature fibre uniform winding on U-shaped metallic framework, or foundry facing is evenly spread upon on U-shaped metallic framework, obtain U-shaped Kong Xin, the size of this U-shaped Kong Xin and institute's forming hole measure-alike.

B. U-shaped Kong Xin is inserted to preexisting hole position fixing in die cavity;

C. liquid metals melting being obtained pours in casting mold, obtains foundry goods after cooled and solidified;

D. take out after foundry goods, U-shaped hole core is extracted out, can obtain U-shaped hole;

According to such scheme, adopt high-temperature fibre or foundry facing as the surfacing of U-shaped Kong Xin, the higher metallic framework of intensity is as the framework material of U-shaped Kong Xin, hole wicking surface material and metal wellability and reactive bad, in casting process, do not react with metallic matrix, can guarantee that blowhole inwall chemical composition and matrix phase are same, obtain the comparatively foundry goods of high-quality; And metallic framework has some strength, can guarantee that the cooling rear U-shaped hole of foundry goods core extracts out smoothly.

accompanying drawing explanation

Fig. 1 is the U-shaped hole core schematic cross-section of patent of the present invention.

the specific embodiment

The present embodiment take casting diameter be 5mm, the U-shaped hole that length of run is 50mm is that example describes.Casting structure according to design carries out moulding; According to the shape in U-shaped hole, by carbon fiber uniform winding on U-iron frame, or graphite paint is evenly spread upon on U-iron frame, obtain U-shaped Kong Xin, this U-shaped Kong Xin with want the U-shaped hole dimension of moulding identical, be that U-shaped Kong Xin is diameter 5mm, the U-shaped hole core that length of run is 50mm, inserts preexisting hole position in die cavity by U-shaped hole core; Metal aluminium liquid after melting is poured in casting mold, and pouring temperature is 700 ℃, obtains foundry goods after cooled and solidified; After taking out foundry goods, U-shaped hole core is extracted out, obtained U-shaped hole, above-described embodiment is to be beneficial to explanation the present invention, rather than limitation of the present invention, and improvement of the present invention under the design prerequisite of invention all belongs to the scope that the claims in the present invention are protected.

Claims (5)

1. a method of utilizing high-temperature fibre or the foundry facing U-shaped hole of moulding different curvature on foundry goods, comprises the steps:
Step a. makes and obtains U-shaped Kong Xin with high-temperature fibre or foundry facing and metallic framework, and the size of this U-shaped Kong Xin and institute's forming hole measure-alike inserted U-shaped Kong Xin in die cavity preexisting hole position and fix;
The molten metal that step b. obtains melting pours in casting mold, obtains foundry goods after cooled and solidified;
Step c is taken out after foundry goods, and hole core is extracted out, can in foundry goods, prepare U-shaped hole.
2. a kind of method of utilizing high-temperature fibre or the foundry facing U-shaped hole of moulding different curvature on foundry goods according to claim 1, it is characterized in that: the preparation of this U-shaped Kong Xin, be core crab material size on demand in hole is bent into U-shaped, thereon the resistant to elevated temperatures fibrous material of uniform winding or evenly smear casting use coating.
3. the surfacing of selected U-shaped Kong Xin can be carbon fiber or resistant to elevated temperatures other fibrous materials, and coating can be effective mixing of the foundry facings such as graphite paint or several cast paints, and its cast paint coating layer thickness is between 0.3 ~ 1.5mm.
4. a kind of method of utilizing high-temperature fibre or the foundry facing U-shaped hole of moulding different curvature on foundry goods according to claim 1, it is characterized in that: the framework material of selected U-shaped Kong Xin can be Iron and Iron Alloy, also can be other metals, as long as meet its fusing point, be greater than metallic matrix fusing point.
5. a kind of method of utilizing high-temperature fibre or the foundry facing U-shaped hole of moulding different curvature on foundry goods according to claim 1, is characterized in that: U-shaped hole angle of bend is the class U-shaped hole between 0 ° ~ 180 °.
CN201310427538.6A 2013-09-19 2013-09-19 Preparation method for U-shaped hole in casting CN103639366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310427538.6A CN103639366A (en) 2013-09-19 2013-09-19 Preparation method for U-shaped hole in casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310427538.6A CN103639366A (en) 2013-09-19 2013-09-19 Preparation method for U-shaped hole in casting

Publications (1)

Publication Number Publication Date
CN103639366A true CN103639366A (en) 2014-03-19

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Family Applications (1)

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CN201310427538.6A CN103639366A (en) 2013-09-19 2013-09-19 Preparation method for U-shaped hole in casting

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104289678A (en) * 2014-10-30 2015-01-21 沈阳工业大学 Method for manufacturing lacy square hole in casting manner
CN104289666A (en) * 2014-10-30 2015-01-21 沈阳工业大学 Method for manufacturing eagle-wing-shaped hole in casting manner
CN104289670A (en) * 2014-10-30 2015-01-21 沈阳工业大学 Method for manufacturing hexagonal hole in casting manner
CN104308087A (en) * 2014-10-30 2015-01-28 沈阳工业大学 Method for preparing dumbbell-shaped hole by adopting casting manner
CN104308088A (en) * 2014-10-30 2015-01-28 沈阳工业大学 Method for preparing square hole by adopting casting manner
CN104325068A (en) * 2014-10-30 2015-02-04 沈阳工业大学 Method for preparing triangular hole by adopting casting mode
CN104325089A (en) * 2014-10-30 2015-02-04 沈阳工业大学 Preparation method of spiral hole in casting piece
CN104338908A (en) * 2014-10-30 2015-02-11 沈阳工业大学 Method for preparing crossed hole in casting mode
CN104384455A (en) * 2014-10-30 2015-03-04 沈阳工业大学 Method of preparing semi-circular hole by casting
CN104384454A (en) * 2014-10-30 2015-03-04 沈阳工业大学 Method for preparing pentacle-shaped hole by casting mode
CN104384456A (en) * 2014-10-31 2015-03-04 沈阳工业大学 Method for forming T-shaped hole by adopting casting manner
CN104607620A (en) * 2014-12-05 2015-05-13 沈阳工业大学 Novel method for manufacturing array hole metal materials through vibration casting
CN104741545A (en) * 2015-03-10 2015-07-01 镇江银海铝业有限公司 Rhombus perforated aluminum or aluminum alloy plate and manufacture method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06254667A (en) * 1993-01-27 1994-09-13 Ben Iwate Kojo:Kk Formation of coating layer for casting inner surface
US20020100575A1 (en) * 1999-11-04 2002-08-01 Ykk Corporation Method and apparatus for production of cast article having small hole
CN1365306A (en) * 1999-07-06 2002-08-21 株式会社技术连合 Disintegrative core for high pressure casting, method for manufacturing the same and method for extracting the same
CN1607051A (en) * 2003-10-15 2005-04-20 联合工艺公司 Refractory metal core coating
CN101391285A (en) * 2008-11-05 2009-03-25 温县万隆精铸厂 Use method of high-temperature rock-wool core-making technique in stainless steel precision castings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06254667A (en) * 1993-01-27 1994-09-13 Ben Iwate Kojo:Kk Formation of coating layer for casting inner surface
CN1365306A (en) * 1999-07-06 2002-08-21 株式会社技术连合 Disintegrative core for high pressure casting, method for manufacturing the same and method for extracting the same
US20020100575A1 (en) * 1999-11-04 2002-08-01 Ykk Corporation Method and apparatus for production of cast article having small hole
CN1607051A (en) * 2003-10-15 2005-04-20 联合工艺公司 Refractory metal core coating
CN101391285A (en) * 2008-11-05 2009-03-25 温县万隆精铸厂 Use method of high-temperature rock-wool core-making technique in stainless steel precision castings

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104289678A (en) * 2014-10-30 2015-01-21 沈阳工业大学 Method for manufacturing lacy square hole in casting manner
CN104289666A (en) * 2014-10-30 2015-01-21 沈阳工业大学 Method for manufacturing eagle-wing-shaped hole in casting manner
CN104289670A (en) * 2014-10-30 2015-01-21 沈阳工业大学 Method for manufacturing hexagonal hole in casting manner
CN104308087A (en) * 2014-10-30 2015-01-28 沈阳工业大学 Method for preparing dumbbell-shaped hole by adopting casting manner
CN104308088A (en) * 2014-10-30 2015-01-28 沈阳工业大学 Method for preparing square hole by adopting casting manner
CN104325068A (en) * 2014-10-30 2015-02-04 沈阳工业大学 Method for preparing triangular hole by adopting casting mode
CN104325089A (en) * 2014-10-30 2015-02-04 沈阳工业大学 Preparation method of spiral hole in casting piece
CN104338908A (en) * 2014-10-30 2015-02-11 沈阳工业大学 Method for preparing crossed hole in casting mode
CN104384455A (en) * 2014-10-30 2015-03-04 沈阳工业大学 Method of preparing semi-circular hole by casting
CN104384454A (en) * 2014-10-30 2015-03-04 沈阳工业大学 Method for preparing pentacle-shaped hole by casting mode
CN104384456A (en) * 2014-10-31 2015-03-04 沈阳工业大学 Method for forming T-shaped hole by adopting casting manner
CN104607620A (en) * 2014-12-05 2015-05-13 沈阳工业大学 Novel method for manufacturing array hole metal materials through vibration casting
CN104741545A (en) * 2015-03-10 2015-07-01 镇江银海铝业有限公司 Rhombus perforated aluminum or aluminum alloy plate and manufacture method thereof

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Application publication date: 20140319