CN100374337C - Powder metallurgy brake shoe for locomotive engine - Google Patents
Powder metallurgy brake shoe for locomotive engine Download PDFInfo
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- CN100374337C CN100374337C CNB2003101217417A CN200310121741A CN100374337C CN 100374337 C CN100374337 C CN 100374337C CN B2003101217417 A CNB2003101217417 A CN B2003101217417A CN 200310121741 A CN200310121741 A CN 200310121741A CN 100374337 C CN100374337 C CN 100374337C
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- metallurgy brake
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Abstract
The present invention relates to a powder metallurgy brake shoe for locomotives. Products are made from friction material by using prescription with the procedures of batching, pressing, sintering, machine work, etc., wherein the friction material comprises 5 wt% to 7 wt% of iron powder, 68 wt % to 75 wt% of graphite, 3 wt% to 5 wt% of copper powder, 7 wt% to 8 wt% of tin powder, 2 wt% to 6 wt% silicon dioxide, 2 wt% to 4 wt% of silicon carbide, 1 wt% to 3 wt% of molybdenum powder and 1 wt% to 3 wt% of chromium powder. The present invention provides the powder metallurgy brake shoe with good combination performance which can obviously prevent wheels from removing from treading faces. The powder metallurgy brake shoe for locomotives is manufactured by the method of powder metallurgy technology, and has the advantages of high mechanical strength, stable frictional performance, good heat conducting performance, high abrasive resistance, long service life, etc.
Description
Technical field the present invention relates to the railway speed increase locomotive brake component that the powder metallurgical technique method is made, and is specifically related to SS
3BA kind of ferrous based powder metallurgical brake shoe in (Shaoshan 3B type) locomotive braking system.
Background technology is along with the continuous lifting of locomotive overall trip speed, deceleration and stopping performance to brake shoe is had higher requirement, not only require to have sufficiently high friction coefficient and stability thereof, require also that enough mechanical strengths, good thermophysical property, high permeability of heat, resistance to abrasion are strong, long service life etc., and require wheel team tread is not produced abnormal damage, adhesion between the wheel track is not had a negative impact, environment is not produced pollution etc.And existing SS
3BThe high break-in that locomotive uses becomes brake shoe because poor heat stability, so major part directly is conducted into tire tread in the heat energy that produces, cause the wheel tread increase in temperature, make the tread metallographic structure change, form martensitic stucture, because the hard and crisp characteristic of martensite, the tread large tracts of land forms frog skin spot corrosion hole to have aggravated shelled tread serious in locomotive alternation braking procedure.
Summary of the invention is at present SS
3BLocomotive becomes brake shoe that wheel tread is caused with high break-in to peel off serious present situation, the objective of the invention is do not changing SS
3BUnder the situation of locomotive brake shoe thrust, provide a kind of SS of satisfying
3BThe locomotive brake performance requriements is alleviated the ferrous based powder metallurgical brake shoe that wheel tread is peeled off.
The object of the present invention is achieved like this: locomotive powder metallurgy brake block, friction piece material adopt following prescription to make product through operations such as batching, compacting, sintering, machineworks, and the weight percentage ranges of friction piece material prescription is:
Iron powder 5-7, graphite 68-75, copper powder 3-5, glass putty 7-8, silicon dioxide 2-6, carborundum 2-4, molybdenum powder 1-3, chromium powder 1-3
The weight percentage ranges of friction piece material optimization formula can be preferably:
Iron powder 6-7, graphite 70-71, copper powder 4-5, glass putty 7-8, silicon dioxide 4-5, carborundum 3-4, molybdenum powder 1～2, chromium powder 2-3
The weight percentage ranges of friction piece material optimization formula is:
Iron powder 6, graphite 71, copper powder 4, glass putty 8, silicon dioxide 4,
Carborundum 3, molybdenum powder 2, chromium powder 2
The invention provides and a kind ofly can obviously alleviate the powder metallurgy brake block that wheel tread is peeled off, do not changing SS with high comprehensive performance
3BUnder the situation of locomotive brake shoe thrust, adopt the powder metallurgical technique method, selecting for use with iron is matrix, adds lubricant component, friction constituent element, strengthens constituent element, makes product by certain proportioning by operations such as batch mixing, compacting, sintering, processing.Have that mechanical strength is good, stable friction performance, good heat conductivity, resistance to abrasion be strong, advantages such as long service life.
The invention will be further described below in conjunction with the drawings and specific embodiments for description of drawings.
Fig. 1 is SS
3BLocomotive powder metallurgy brake block structural representation.
The specific embodiment as shown in Figure 1, SS of the present invention
3BThe locomotive powder metallurgy brake block is formed by brake shoe nose 1, block 2, steel backing 3, brake shoes 4 Combination Welding.Brake shoes 4 be by skeleton and pressed compact through pressure sintering be one as the friction shoe body, friction shoe body and steel backing adopt welding fixing, profile is processed with big vertical lathe bed, unit clamp and is made product.
Optimization formula of the present invention and weight percent content scope are:
| Iron powder | Graphite | Copper powder | Glass putty | Silicon dioxide | Carborundum | Molybdenum powder | Chromium powder | |
| Prescription 1 | 5 | 73 | 3 | 8 | 3 | 3 | 3 | 2 |
| Prescription 2 | 6 | 70 | 4 | 7 | 6 | 3 | 2 | 2 |
| Prescription 3 | 6 | 71 | 4 | 8 | 4 | 3 | 2 | 2 |
The SS that promptly can be made into by above-mentioned prescription and existing process
3BThe locomotive powder metallurgy brake block.It is matrix that the friction piece material adopts with iron, add graphite, tin lubricant component, carborundum, silicon dioxide friction constituent element, chromium, copper, molybdenum are strengthened nearly ten kinds of elements of constituent element, make product through existing operations such as batching, compacting, sintering, machineworks and have that mechanical strength is good, stable friction performance, good heat conductivity, resistance to abrasion be strong, advantages such as long service life.
By the powder metallurgy brake block surface spraying Q01-1 zapon varnish that above-mentioned prescription is made, remainder spraying Q04-2 black lacquer enamel gets final product.Can realize that the friction coefficient of powder metallurgy brake block under the 100km/h overall trip speed is 0.272 ± 0.05, stopping distance＜800m.
Claims (4)
1. the lathe powder metallurgy brake block is characterized in that the friction piece material adopts following prescription to make product through batching, compacting, sintering, machining processes, and the weight percentage ranges of friction piece material prescription is:
Iron powder 5-7, graphite 68-75, copper powder 3-5, glass putty 7-8, silicon dioxide 2-6, carborundum 2-4, molybdenum powder 1-3, chromium powder 1-3.
2. metallurgical brake shoe according to claim 1 is characterized in that the weight percentage ranges of friction piece material prescription is:
Iron powder 6-7, graphite 70-71, copper powder 4-5, glass putty 7-8, silicon dioxide 4-5, carborundum 3-4, molybdenum powder 1-2, chromium powder 2-3.
3. metallurgical brake shoe according to claim 1 is characterized in that the weight percentage ranges of friction piece material prescription is:
Iron powder 6, graphite 71, copper powder 4, glass putty 8, silicon dioxide 4, carborundum 3, molybdenum powder 2, chromium powder 2.
4. metallurgical brake shoe according to claim 1 is characterized in that the weight percentage ranges of friction piece material prescription is:
Iron powder 5, graphite 73, copper powder 3, glass putty 8, silicon dioxide 3, carborundum 3, molybdenum powder 3, chromium powder 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101217417A CN100374337C (en) | 2003-12-22 | 2003-12-22 | Powder metallurgy brake shoe for locomotive engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101217417A CN100374337C (en) | 2003-12-22 | 2003-12-22 | Powder metallurgy brake shoe for locomotive engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559845A CN1559845A (en) | 2005-01-05 |
| CN100374337C true CN100374337C (en) | 2008-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101217417A Expired - Fee Related CN100374337C (en) | 2003-12-22 | 2003-12-22 | Powder metallurgy brake shoe for locomotive engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN100374337C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930083B (en) * | 2015-06-26 | 2017-10-27 | 贵州新安航空机械有限责任公司 | A kind of brake tile structure and its manufacturing process |
| CN104963971B (en) * | 2015-06-30 | 2018-09-14 | 贵州新安航空机械有限责任公司 | A kind of powder metallurgy brake block structure and its processing method |
| CN105772703A (en) * | 2016-03-09 | 2016-07-20 | 苏州莱特复合材料有限公司 | Preparation method of powder metallurgy friction material for deep hole drilling machine |
| CN106111978B (en) * | 2016-08-18 | 2018-09-25 | 贵州新安航空机械有限责任公司 | A kind of ultralow brake shoe and the preparation method of rubbing of railway freight-car powder metallurgy |
| CN106351993A (en) * | 2016-08-29 | 2017-01-25 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake lining for high speed train and preparing method thereof |
| CN106763356A (en) * | 2016-11-30 | 2017-05-31 | 北京天宜上佳新材料股份有限公司 | The processing method of friction piece, brake shoe and friction piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032195A (en) * | 1987-09-19 | 1989-04-05 | 北京摩擦材料厂 | A kind of friction plate and manufacture method thereof |
| US20030152805A1 (en) * | 2002-02-12 | 2003-08-14 | Komag, Inc. | Magnetic media with improved exchange coupling |
| US6648991B2 (en) * | 2001-03-13 | 2003-11-18 | Siderca S.A.I.C. | Low-alloy carbon steel for the manufacture of pipes for exploration and the production of oil and/or gas having an improved corrosion resistance, a process for the manufacture of seamless pipes, and the seamless pipes obtained therefrom |
-
2003
- 2003-12-22 CN CNB2003101217417A patent/CN100374337C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032195A (en) * | 1987-09-19 | 1989-04-05 | 北京摩擦材料厂 | A kind of friction plate and manufacture method thereof |
| US6648991B2 (en) * | 2001-03-13 | 2003-11-18 | Siderca S.A.I.C. | Low-alloy carbon steel for the manufacture of pipes for exploration and the production of oil and/or gas having an improved corrosion resistance, a process for the manufacture of seamless pipes, and the seamless pipes obtained therefrom |
| US20030152805A1 (en) * | 2002-02-12 | 2003-08-14 | Komag, Inc. | Magnetic media with improved exchange coupling |
Non-Patent Citations (1)
| Title |
|---|
| 高速列车刹车材料的性能综述. 刘建秀，李蔚，韩长生.江苏冶金，第31卷第2期. 2003 * |
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|---|---|
| CN1559845A (en) | 2005-01-05 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING RAILWAY DISHENG TRADING COMPANY; GUIZHO Free format text: FORMER OWNER: CHONGQING SOUTH LOCOMOTIVE DEPOT Effective date: 20080516 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080516 Address after: Chongqing Liangshan Kowloon slope Garden yard, zip code: 400052 Co-patentee after: Guizhou Xin'an Aviation Machinery Co., Ltd. Patentee after: Chongqing railway flute sound trading company Address before: 228, No. 2 village, Huang Jue Ping railway, Jiulongpo District, Chongqing, zip code: 400053 Co-patentee before: Guizhou Xin'an Aviation Machinery Co., Ltd. Patentee before: Chongqing South Locomotive Depot staff Technical Association Technical Service Department |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20131222 |