CN103949588A - Method for forming slender bent irregularly-shaped hole in aluminum alloy casting - Google Patents
Method for forming slender bent irregularly-shaped hole in aluminum alloy casting Download PDFInfo
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- CN103949588A CN103949588A CN201410171350.4A CN201410171350A CN103949588A CN 103949588 A CN103949588 A CN 103949588A CN 201410171350 A CN201410171350 A CN 201410171350A CN 103949588 A CN103949588 A CN 103949588A
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Abstract
The invention belongs to the field of precision casting of fired molds, in particular relates to a precision casting forming method for an aluminum alloy casting with a slender irregularly-shaped bent hole, and aims to solve the problems of difficulty in extracting a metal mold core, difficulty in manufacturing a shell, even incapability of manufacturing the shell and the like in a conventional process for forming a slender bent hole in the metal mold core as well as the problem of severe corrosion of the casting during core stripping in a process for forming a slender bent hole through a ceramic mold core. By adopting the method provided by the invention, the qualified molding of the slender bent irregularly-shaped hole in the aluminum casting can be ensured, and the size accuracy, surface roughness, wear resistance, erosion resistance and use strength of the slender bent irregularly-shaped hole in the aluminum casting can be enhanced.
Description
Technical field
The invention belongs to precision-investment casting field, especially there is the investment pattern precision casting manufacturing process of the aluminium alloy castings of elongated special-shaped bent hole.
Background technology
Application number CN201120322533 utility model discloses a kind of investment shell of the elongated orifices foundry goods of casting, and belongs to investment pattern die; Aim to provide after a kind of casting without the investment pattern die that carries out soda boiling processing and can obtain complete foundry goods.It is made up of core, the wax-pattern that is coated on this whose surfaces, the shell that is coated on this wax-pattern surface, the de-waxing runner being located on this shell; Core is made up of the viscosity molding sand being packed in wax-pattern.The weak point of this utility model is that dimensional accuracy and the surface smoothness of utilizing viscosity molding sand to form foundry goods elongated orifices are not high.
When precision-investment casting method manufacture has the aluminium alloy precision castings of elongate curved irregularly-shaped hole, the shaping of its elongated irregularly-shaped hole is generally with the metallic core of suppressing wax-pattern process, but have the metallic core problem such as cannot loose core, and the shell manufacture difficulty at elongate curved irregularly-shaped hole position very greatly even cannot shell processed.Also have a kind of method to adopt exactly ceramic core to be shaped, after casting pouring, remove ceramic core by alkali corrosion method, but alkali corrosion is understood major injury aluminium alloy castings itself.
Summary of the invention
(1) goal of the invention
The object of this invention is to provide a kind of hot investment casting manufacturing process of the aluminium alloy castings with elongate curved irregularly-shaped hole, solve rely on conventional metals core manufacture elongate curved hole technique exist metallic core extract difficult, shell difficulty processed even cannot shell processed etc. problem, the own difficult problem of heavy corrosion foundry goods while relying on ceramic core to manufacture the depoling of elongate curved hole technique existence.Method provided by the invention can ensure the qualified moulding of aluminium alloy castings elongate curved irregularly-shaped hole, and can improve dimensional accuracy, surface roughness, wear resistance and corrosion resistance and the working strength of aluminium alloy castings elongate curved irregularly-shaped hole.
(2) invention technical scheme
A manufacturing process for elongate curved irregularly-shaped hole in aluminium alloy castings, this method comprises the following steps:
1) according to the shape and size of irregularly-shaped hole in casting design figure, cut and bend the metal tube identical with irregularly-shaped hole internal diameter shape and size, the fusing point of metal tube is higher than aluminium alloy fusing point;
2) metal tube is polished and repaired and inspection;
3) metal tube is put into Wax mold fixing, carried out wax-pattern die mould;
4) expose hole with the tight built-in metal pipe end of sealing with wax;
5) with pre-buried metal tube in X-ray procedure wax-pattern;
6) carry out the generic aluminium alloy precision castings technological process of production: 1 mill is made in wax-pattern finishing, combination, shell processed, dewaxing, Baking, fusing cast, shelling, cutting;
7) whether the shape of X-ray examination built-in metal pipe and position be correct.2
8) check that with ball whether metal tube inside is unobstructed.
The material of described metal tube is 1Cr18Ni9Ti.
(3) beneficial effect
The method of utilizing built-in metal pipe to manufacture irregularly-shaped hole in aluminium casting provided by the invention, can effectively solve the difficult problem of tiny bending irregularly-shaped hole moulding, avoid metallic core to extract difficulty, tiny bending slotted hole shell difficulty processed, the technical bottleneck problem such as heavy corrosion foundry goods itself while utilizing ceramic core manufacture aluminium alloy castings to have depoling.And can effectively promote dimensional accuracy, surface roughness, wear resistance and corrosion resistance and the working strength in the aluminium alloy castings tiny curved elongated of abnormity hole.
Brief description of the drawings
Accompanying drawing 1 is a kind of aluminium alloy castings schematic diagram, and wherein: part 1 is aluminium alloy castings, part 2 is pre-buried metal tubes.
Detailed description of the invention
Case 1: intermediary's casing
1) make stainless steel metal pipe fitting according to the shape and size of the elongated irregularly-shaped hole of intermediary's casing drawing of rough casting, diameter is 8mm, thickness of pipe wall 1mm, and material is 1Cr18Ni9Ti, can ensure at aluminium alloy castings casting process composition and dimensionally stable.
2) metal tube is polished and repaired and inspection;
3) metal tube is put into Wax mold fixing, carried out wax-pattern die mould;
4) expose hole with the tight embedded steel tube termination of sealing with wax;
5) with built-in fitting in X-ray procedure wax-pattern;
6) carry out the generic aluminium alloy precision castings technological process of production: wax-pattern finishing, combination, shell processed, dewaxing, Baking, fusing cast, shelling, cutting polishing etc.;
7) whether the shape of X-ray examination built-in metal pipe and position be correct.
8) check that with ball whether metal tube inside is unobstructed.
Case 2: housing
1) make stainless steel metal pipe fitting according to the shape and size of the elongated irregularly-shaped hole of shell casting figure, diameter is 6mm, thickness of pipe wall 1mm, and material is 1Cr18Ni9Ti;
2) metal tube is polished and repaired and inspection;
3) metal tube is put into Wax mold fixing, carried out wax-pattern die mould;
4) expose hole with the tight embedded steel tube termination of sealing with wax;
5) with built-in fitting in X-ray procedure wax-pattern;
6) carry out the generic aluminium alloy precision castings technological process of production: wax-pattern finishing, combination, shell processed, dewaxing, Baking, fusing cast, shelling, cutting polishing etc.;
7) whether the shape of X-ray examination built-in metal pipe and position be correct.
8) check that with ball whether metal tube inside is unobstructed.
Case 3: governor body
1) make stainless steel metal pipe fitting according to the shape and size of the elongated irregularly-shaped hole of the governor body drawing of rough casting, diameter is 5mm, thickness of pipe wall 1mm, and material is 1Cr18Ni9Ti;
2) metal tube is polished and repaired and inspection;
3) metal tube is put into Wax mold fixing, carried out wax-pattern die mould;
4) expose hole with the tight embedded steel tube termination of sealing with wax;
5) with built-in fitting in X-ray procedure wax-pattern;
6) carry out the generic aluminium alloy precision castings technological process of production: wax-pattern finishing, combination, shell processed, dewaxing, Baking, fusing cast, shelling, cutting polishing etc.;
7) whether the shape of X-ray examination built-in metal pipe and position be correct.
8) check that with ball whether metal tube inside is unobstructed.
Claims (2)
1. a manufacturing process for elongate curved irregularly-shaped hole in aluminium alloy castings, is characterized in that, this method comprises the following steps:
1) according to the shape and size of irregularly-shaped hole in casting design figure, cut and bend the metal tube identical with irregularly-shaped hole internal diameter shape and size, the fusing point of metal tube is higher than aluminium alloy fusing point;
2) metal tube is polished and repaired and inspection;
3) metal tube is put into Wax mold fixing, carried out wax-pattern die mould;
4) expose hole with the tight built-in metal pipe end of sealing with wax;
5) with pre-buried metal tube in X-ray procedure wax-pattern;
6) carry out the generic aluminium alloy precision castings technological process of production: wax-pattern finishing, combination, shell processed, dewaxing, Baking, fusing cast, shelling, cutting polishing;
7) whether the shape of X-ray examination built-in metal pipe and position be correct;
8) check that with ball whether metal tube inside is unobstructed.
2. the manufacturing process of elongate curved irregularly-shaped hole in a kind of aluminium alloy castings as claimed in claim 1, is characterized in that, the material of described metal tube is 1Cr18Ni9Ti.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171350.4A CN103949588B (en) | 2014-04-25 | 2014-04-25 | The manufacturing process of elongate curved irregularly-shaped hole in a kind of aluminium alloy castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171350.4A CN103949588B (en) | 2014-04-25 | 2014-04-25 | The manufacturing process of elongate curved irregularly-shaped hole in a kind of aluminium alloy castings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103949588A true CN103949588A (en) | 2014-07-30 |
| CN103949588B CN103949588B (en) | 2016-04-20 |
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| CN201410171350.4A Active CN103949588B (en) | 2014-04-25 | 2014-04-25 | The manufacturing process of elongate curved irregularly-shaped hole in a kind of aluminium alloy castings |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384456A (en) * | 2014-10-31 | 2015-03-04 | 沈阳工业大学 | Method for forming T-shaped hole by adopting casting manner |
| CN104384454A (en) * | 2014-10-30 | 2015-03-04 | 沈阳工业大学 | Method for preparing pentacle-shaped hole by casting mode |
| CN104923733A (en) * | 2015-05-15 | 2015-09-23 | 中国航空工业集团公司北京航空材料研究院 | Casting method of titanium or titanium alloy casting having special-shaped inner hole |
| CN104923727A (en) * | 2015-05-15 | 2015-09-23 | 中国航空工业集团公司北京航空材料研究院 | Sand mould casting method of titanium or titanium alloy cast with special-shape inner hole |
| CN104923732A (en) * | 2015-05-15 | 2015-09-23 | 中国航空工业集团公司北京航空材料研究院 | Method for casting titanium or titanium alloy casting with special-shaped inner hole |
| CN105397026A (en) * | 2015-11-30 | 2016-03-16 | 贵州安吉航空精密铸造有限责任公司 | Casting process for forming complex pipeline in titanium alloy investment casting |
| CN105522110A (en) * | 2015-12-18 | 2016-04-27 | 贵州安吉航空精密铸造有限责任公司 | Process for manufacturing shell with embedded steel pipe through aluminum alloy investment casting |
| CN106955976A (en) * | 2017-03-24 | 2017-07-18 | 江文宏 | A kind of midsole Mold Making technique |
| CN108436474A (en) * | 2018-04-26 | 2018-08-24 | 重庆大学 | A kind of Bend Hole Machining method of combination drilling and plastic deformation |
| CN113894253A (en) * | 2021-09-24 | 2022-01-07 | 深圳市北工实业有限公司 | Casting process adopting hollow metal mold core and hollow metal part |
| CN114178505A (en) * | 2021-12-13 | 2022-03-15 | 东营诚扬精密机械有限公司 | Accurate forming method for internal pipeline of light alloy casing |
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| DE2833572A1 (en) * | 1978-01-09 | 1979-07-12 | Certech | CAST CORE CONTAINING CALCIUM CARBONATE |
| JPS6030549A (en) * | 1983-07-30 | 1985-02-16 | Kubota Ltd | Production of casting having fine hole |
| JP2005016399A (en) * | 2003-06-25 | 2005-01-20 | Kioritz Corp | Manufacturing method of cylinder for internal combustion engine |
| CN102078919A (en) * | 2010-12-17 | 2011-06-01 | 西安西工大超晶科技发展有限责任公司 | Precision casting method of double-layer thin-wall bent pipe casting |
| CN103639360A (en) * | 2013-11-25 | 2014-03-19 | 成都新航工业科技有限公司 | Method for carrying out plaster mould precise investment casting by utilizing copper pipes |
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2014
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Patent Citations (5)
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| DE2833572A1 (en) * | 1978-01-09 | 1979-07-12 | Certech | CAST CORE CONTAINING CALCIUM CARBONATE |
| JPS6030549A (en) * | 1983-07-30 | 1985-02-16 | Kubota Ltd | Production of casting having fine hole |
| JP2005016399A (en) * | 2003-06-25 | 2005-01-20 | Kioritz Corp | Manufacturing method of cylinder for internal combustion engine |
| CN102078919A (en) * | 2010-12-17 | 2011-06-01 | 西安西工大超晶科技发展有限责任公司 | Precision casting method of double-layer thin-wall bent pipe casting |
| CN103639360A (en) * | 2013-11-25 | 2014-03-19 | 成都新航工业科技有限公司 | Method for carrying out plaster mould precise investment casting by utilizing copper pipes |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104923733A (en) * | 2015-05-15 | 2015-09-23 | 中国航空工业集团公司北京航空材料研究院 | Casting method of titanium or titanium alloy casting having special-shaped inner hole |
| CN104923727A (en) * | 2015-05-15 | 2015-09-23 | 中国航空工业集团公司北京航空材料研究院 | Sand mould casting method of titanium or titanium alloy cast with special-shape inner hole |
| CN104923732A (en) * | 2015-05-15 | 2015-09-23 | 中国航空工业集团公司北京航空材料研究院 | Method for casting titanium or titanium alloy casting with special-shaped inner hole |
| CN105397026A (en) * | 2015-11-30 | 2016-03-16 | 贵州安吉航空精密铸造有限责任公司 | Casting process for forming complex pipeline in titanium alloy investment casting |
| CN105522110A (en) * | 2015-12-18 | 2016-04-27 | 贵州安吉航空精密铸造有限责任公司 | Process for manufacturing shell with embedded steel pipe through aluminum alloy investment casting |
| CN105522110B (en) * | 2015-12-18 | 2018-04-06 | 贵州安吉航空精密铸造有限责任公司 | A kind of aluminium alloy model casting band inlays the manufacture craft of steel pipe fitting shell |
| CN106955976A (en) * | 2017-03-24 | 2017-07-18 | 江文宏 | A kind of midsole Mold Making technique |
| CN108436474A (en) * | 2018-04-26 | 2018-08-24 | 重庆大学 | A kind of Bend Hole Machining method of combination drilling and plastic deformation |
| CN113894253A (en) * | 2021-09-24 | 2022-01-07 | 深圳市北工实业有限公司 | Casting process adopting hollow metal mold core and hollow metal part |
| CN114178505A (en) * | 2021-12-13 | 2022-03-15 | 东营诚扬精密机械有限公司 | Accurate forming method for internal pipeline of light alloy casing |
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| CN103949588B (en) | 2016-04-20 |
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Address after: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee after: AVIC AVIATION ENGINE Corp.,PLC Address before: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee before: XI'AN AVIATION POWER Co.,Ltd. Address after: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee after: AECC AVIATION POWER CO,LTD. Address before: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee before: AVIC AVIATION ENGINE Corp.,PLC |
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Effective date of registration: 20230515 Address after: Room 2807, Shaanxi Water Building, No. 2206 Hongqi Road, Economic and Technological Development Zone, Xi'an City, Shaanxi Province, 710000 Patentee after: Xi'an Gangyan Gaona Aviation Components Co.,Ltd. Address before: 710021 Fengcheng 10 Road, Weiyang District, Xi'an City, Shaanxi Province Patentee before: AECC AVIATION POWER CO,LTD. |