CN103128269A - Method for manufacturing braking products of rail wagons - Google Patents
Method for manufacturing braking products of rail wagons Download PDFInfo
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- CN103128269A CN103128269A CN2013100862545A CN201310086254A CN103128269A CN 103128269 A CN103128269 A CN 103128269A CN 2013100862545 A CN2013100862545 A CN 2013100862545A CN 201310086254 A CN201310086254 A CN 201310086254A CN 103128269 A CN103128269 A CN 103128269A
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- railway wagon
- mould
- wagon brake
- rail wagons
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Abstract
The invention discloses a method for manufacturing braking products of rail wagons. An aluminum alloy liquid forging manufacturing process is applied to manufacturing of the braking products of the rail wagons to effectively solve a plurality of problems of the braking products, manufactured by using the existing gravity casting forming process and die-cast forming process, of the rail wagons. By means of the braking products of the rail wagons manufactured by using the method, the mechanical behavior is that the extension strength delta is larger than 350N/mm<2>, the elongation rate is larger than 4%, and the hardness is larger than 110HB. After the products are formed, the valve body and cover pin hole degree belong to the first level, namely no pin hole exists, the texture density is high, an infiltration process necessary to the existing process after forming is removed, the mechanical behavior of the products is greatly improved, and the products are favorable for whole performance stability of a valve.
Description
Technical field
The present invention relates to a kind of method for the manufacture of the railway wagon brake product.
Background technology
The railway wagon brake product requires to have good air-tightness and mechanical performance mostly with aluminum alloy spare part.Existing railway wagon brake product all adopts gravitational casting moulding process and compression molding process with aluminum alloy spare part, and raw material all adopt YL112, and the aluminium alloy valve body that produces, to cover its mechanical performance be tensile strength δ
b〉=240N/ ㎜
2, percentage elongation 〉=1%, hardness 〉=85HB, moulding rear valve body, lid pinhole rate are 2 grades, for preventing valve body, lid dense structure degree not, string wind also needs Infiltration Technics between each gas circuit, but after long-time the use, still can there be defects in the infiltration part.
This shows, adopt the aluminum alloy spare part of above two kinds of manufacturing process moulding to be prone to the casting flaws such as pore, shrinkage cavity and porosity, these casting flaws can directly have influence on air-tightness and the mechanical performance of aluminum alloy spare part, and then affect the stable performance of whole railway wagon brake product.
Summary of the invention
The object of the invention is to: for the problem of above-mentioned existence, a kind of solution railway wagon brake product valve aluminium alloy valve body is provided, covers tissue looseness, effectively prevent from going here and there between valve body, inner each gas circuit of lid wind, improve the method for the manufacture of the railway wagon brake product of its mechanical performance.
Technical scheme of the present invention is achieved in that a kind of method for the manufacture of the railway wagon brake product, it is characterized in that: aluminum alloy melt morphotype forging fabrication technique is applied in the production of railway wagon brake product.
Method for the manufacture of the railway wagon brake product of the present invention, its described aluminum alloy melt morphotype forging fabrication technique for the railway wagon brake production comprises the following steps:
A), adopt ZL111 as raw material, described raw material are melted;
B), on forcing press the good mould of clamping, and mould is carried out preheating, the preheat temperature of mould is: 220 ℃～300 ℃;
C), mould and die preheating pours into a mould after completing, pouring temperature is 680 ℃～730 ℃, simultaneously to the forcing press 2s～3s that boosts;
D), etc. suppress after casting complete, moulding pressure is 450MPa～550Mpa, the dwell time is 20s～30s;
E), eject rolled-up stock, form finished product after completing at last heat treatment.
Method for the manufacture of the railway wagon brake product of the present invention, it is in described step e), described heat treatment comprises solution treatment and artificial aging, and described solution treatment is at 480 ℃～530 ℃ insulation 1h～6h, and described artificial aging is at 140 ℃～180 ℃ insulation 2h～10h.
The present invention is by being applied in aluminum alloy melt morphotype forging fabrication technique in the production of railway wagon brake product, efficiently solve the problems that the railway wagon brake product that adopts existing gravitational casting moulding process and compression molding process to produce exists, the railway wagon brake product that adopts the present invention to make, its mechanical performance is tensile strength δ
b350N/ ㎜
2, percentage elongation〉and 4%, hardness〉110HB; Moulding rear valve body, lid pinhole rate are 1 grade, i.e. free of pinholes, and dense structure's degree is high, can cancel and adopt the Infiltration Technics that must carry out after existing technological forming, has greatly improved the mechanical performance of product, is conducive to the valve overall performance stable.
The specific embodiment
Below the present invention is described in detail.
In order to make purpose of the present invention, technical scheme and advantage clearer, below the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
A kind of method for the manufacture of the railway wagon brake product, it is applied in aluminum alloy melt morphotype forging fabrication technique in the production of railway wagon brake product.
Wherein, described aluminum alloy melt morphotype forging fabrication technique for the railway wagon brake production comprises the following steps:
A), adopt ZL111 as raw material, described raw material are melted;
B), on forcing press the good mould of clamping, and mould is carried out preheating, the preheat temperature of mould is: 220 ℃～300 ℃;
C), mould and die preheating pours into a mould after completing, pouring temperature is 680 ℃～730 ℃, simultaneously to the forcing press 2s～3s that boosts;
D), etc. suppress after casting complete, moulding pressure is 450MPa～550Mpa, the dwell time is 20s～30s;
E), eject rolled-up stock, form finished product after completing at last heat treatment.
In described step e), described heat treatment comprises solution treatment and artificial aging, and described solution treatment is at 480 ℃～530 ℃ insulation 1h～6h, and described artificial aging is at 140 ℃～180 ℃ insulation 2h～10h.
The railway wagon brake valve that adopts above-mentioned technique to make, its mechanical performance is tensile strength δ
b350N/ ㎜
2, percentage elongation〉and 4%, hardness〉110HB; Moulding rear valve body, lid pinhole rate are 1 grade, and namely free of pinholes, can cancel Infiltration Technics.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. the method for the manufacture of the railway wagon brake product, is characterized in that: aluminum alloy melt morphotype forging fabrication technique is applied in the production of railway wagon brake product.
2. the method for the manufacture of the railway wagon brake product according to claim 1, it is characterized in that: described aluminum alloy melt morphotype forging fabrication technique for the railway wagon brake production comprises the following steps:
A), adopt ZL111 as raw material, described raw material are melted;
B), on forcing press the good mould of clamping, and mould is carried out preheating, the preheat temperature of mould is: 220 ℃～300 ℃;
C), mould and die preheating pours into a mould after completing, pouring temperature is 680 ℃～730 ℃, simultaneously to the forcing press 2s～3s that boosts;
D), etc. suppress after casting complete, moulding pressure is 450MPa～550Mpa, the dwell time is 20s～30s;
E), eject rolled-up stock, form finished product after completing at last heat treatment.
3. the method for the manufacture of the railway wagon brake product according to claim 2, it is characterized in that: in described step e), described heat treatment comprises solution treatment and artificial aging, described solution treatment is at 480 ℃～530 ℃ insulation 1h～6h, and described artificial aging is at 140 ℃～180 ℃ insulation 2h～10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310086254.5A CN103128269B (en) | 2013-03-19 | 2013-03-19 | Method for manufacturing braking products of rail wagons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310086254.5A CN103128269B (en) | 2013-03-19 | 2013-03-19 | Method for manufacturing braking products of rail wagons |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103128269A true CN103128269A (en) | 2013-06-05 |
| CN103128269B CN103128269B (en) | 2015-04-08 |
Family
ID=48489082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310086254.5A Active CN103128269B (en) | 2013-03-19 | 2013-03-19 | Method for manufacturing braking products of rail wagons |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103128269B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838636A (en) * | 2017-10-25 | 2018-03-27 | 镇江市益宝电气科技有限公司 | A kind of processing technology of valve |
| CN107900607A (en) * | 2017-10-13 | 2018-04-13 | 浙江昊龙电气有限公司 | A kind of Four-axis milling technique of aluminum valve body |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005305466A (en) * | 2004-04-19 | 2005-11-04 | Art Metal Mfg Co Ltd | Molten metal forging apparatus and molten metal forging method |
| CN1759977A (en) * | 2005-10-25 | 2006-04-19 | 哈尔滨理工大学 | Method for producing rocking-turn disk of motorcar air conditioner through technique of liquid forging |
| JP2007119869A (en) * | 2005-10-28 | 2007-05-17 | Nippon Light Metal Co Ltd | Differential gear case and manufacturing method therefor |
| CN102319889A (en) * | 2011-10-24 | 2012-01-18 | 烟台海德汽车零部件有限责任公司 | Process for forging automotive power steering pump cover by using liquid model |
-
2013
- 2013-03-19 CN CN201310086254.5A patent/CN103128269B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005305466A (en) * | 2004-04-19 | 2005-11-04 | Art Metal Mfg Co Ltd | Molten metal forging apparatus and molten metal forging method |
| CN1759977A (en) * | 2005-10-25 | 2006-04-19 | 哈尔滨理工大学 | Method for producing rocking-turn disk of motorcar air conditioner through technique of liquid forging |
| JP2007119869A (en) * | 2005-10-28 | 2007-05-17 | Nippon Light Metal Co Ltd | Differential gear case and manufacturing method therefor |
| CN102319889A (en) * | 2011-10-24 | 2012-01-18 | 烟台海德汽车零部件有限责任公司 | Process for forging automotive power steering pump cover by using liquid model |
Non-Patent Citations (2)
| Title |
|---|
| 程慈龄等: "铝硅合金的液态模锻", 《上海有色金属》 * |
| 龚磊清等: "《铸造铝合金金相图谱》", 30 September 1987 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107900607A (en) * | 2017-10-13 | 2018-04-13 | 浙江昊龙电气有限公司 | A kind of Four-axis milling technique of aluminum valve body |
| CN107900607B (en) * | 2017-10-13 | 2019-04-23 | 浙江昊龙电气有限公司 | A kind of Four-axis milling technique of aluminum valve body |
| CN107838636A (en) * | 2017-10-25 | 2018-03-27 | 镇江市益宝电气科技有限公司 | A kind of processing technology of valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103128269B (en) | 2015-04-08 |
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| CP01 | Change in the name or title of a patent holder |
Address after: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee after: Meisha Zhongke Brake Technology Co., Ltd. Patentee after: Chengdu Guangyi Industrial Development Co., Ltd. Address before: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee before: Sichuan Brake Science and Technology Co. Ltd. Patentee before: Chengdu Guangyi Industrial Development Co., Ltd. |