CN103639366A - Preparation method for U-shaped hole in casting - Google Patents
Preparation method for U-shaped hole in casting Download PDFInfo
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- 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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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
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 °.
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 |
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| CN103639366A true CN103639366A (en) | 2014-03-19 |
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| CN201310427538.6A Pending CN103639366A (en) | 2013-09-19 | 2013-09-19 | Preparation method for U-shaped hole in casting |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289670A (en) * | 2014-10-30 | 2015-01-21 | 沈阳工业大学 | Method for manufacturing hexagonal hole in casting manner |
| 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 |
| 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 |
| CN104384454A (en) * | 2014-10-30 | 2015-03-04 | 沈阳工业大学 | Method for preparing pentacle-shaped hole by casting mode |
| CN104384455A (en) * | 2014-10-30 | 2015-03-04 | 沈阳工业大学 | Method of preparing semi-circular hole by casting |
| 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)
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| JPH06254667A (en) * | 1993-01-27 | 1994-09-13 | Iwate Pref Gov | 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 |
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2013
- 2013-09-19 CN CN201310427538.6A patent/CN103639366A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06254667A (en) * | 1993-01-27 | 1994-09-13 | Iwate Pref Gov | 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289670A (en) * | 2014-10-30 | 2015-01-21 | 沈阳工业大学 | Method for manufacturing hexagonal hole in casting manner |
| 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 |
| 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 |
| CN104384454A (en) * | 2014-10-30 | 2015-03-04 | 沈阳工业大学 | Method for preparing pentacle-shaped hole by casting mode |
| CN104384455A (en) * | 2014-10-30 | 2015-03-04 | 沈阳工业大学 | Method of preparing semi-circular hole by casting |
| 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 |