CN102401051B - Powder metallurgical brake shoe for railway locomotive - Google Patents
Powder metallurgical brake shoe for railway locomotive Download PDFInfo
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- CN102401051B CN102401051B CN201010278275.3A CN201010278275A CN102401051B CN 102401051 B CN102401051 B CN 102401051B CN 201010278275 A CN201010278275 A CN 201010278275A CN 102401051 B CN102401051 B CN 102401051B
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Abstract
The invention relates to a powder metallurgical brake shoe for a railway locomotive. The brake shoe comprises a brake shoe back and a frictional material block, wherein the brake shoe back comprises a brake shoe nose and a positioning groove; the frictional material block is manufactured by a powder metallurgical process; and the frictional material block and the brake shoe back are directly sintered together at the pressure sintering stage of the powder metallurgical process. The brake shoe is characterized in that: the frictional material block consists of the following components in percentage by weight: 12 to 14 percent of graphite, 3 to 5 percent of copper, 1 to 3 percent of manganese, 1 to 3 percent of chromium, 1 to 3 percent of nickel, 1 to 2 percent of aluminum, 2 to 5 percent of molybdenum disulfide, 2 to 5 percent of mullite, 2 to 4 percent of molybdenum trioxide and the balance of iron. The brake shoe has the advantages of simple structure, short manufacturing process flow and low manufacturing cost. The powder metallurgical brake shoe has a stable friction coefficient, little abrasion and long service life.
Description
Technical field
The present invention relates to a kind of powder metallurgical brake shoe for railway locomotive, belong to powder metallurgy friction material field.
Background technique
Friction material is one of indispensable material in break, clutch and the friction gearing of various machinery, is that to utilize friction to make the kinetic transformation of moving object be heat energy, thereby object is slowed down or a kind of multi-element composite material of stop motion.Since vehicle invention, just started the research of friction material.Over nearly 20 years, flourish along with transport undertaking, friction material development is particularly swift and violent, has occurred many new-type friction material, and has been widely used on all kinds of engineering machinery and transport facility.The trend of 21 century development in science and technology is high speed, environmental protection and energy-conservation, for adapting to the needs of this new situations development, must propose higher requirement to the combination property of friction material.
Friction material can be divided into non-metal base and the large class of metal base two, and traditional non-metal base friction material is mainly asbestos friction material, because of its cause environmental pollution and high-temperature stability bad, by carbon/carbon compound material in the last few years, replaced gradually.Metal base friction material is divided into elemental metals and powder metallurgy friction material, and the former mainly refers to steel, cast iron, bronze etc., and powder metallurgy friction material mainly refers to iron-based, copper base and iron copper base friction material.Elemental metals friction material is replaced by other material due to the shortcomings such as friction factor is low under easy bonding and high temperature and high speed, powder metallurgy friction material has special flexibility and popularity aspect material mixture ratio, and under high speed, high-load condition, show good friction and wear behavior, so its application area is extensive compared with other material.
Along with the fast development of national economy, railway passenger and freight transportation amount increases sharply, and the speed up of railway transport has become inevitable development trend.Day early 1990s, method, De Deng railway transport developed country have just opened bullet train more than speed per hour 300km, and China has just opened the quasi high speed train of speed per hour 160km during " eight or five ", the enforcement period of the ninth five-year plan has been developed the bullet train that speed per hour reaches 200km, has started to carry out speed per hour at present and has reached the research of 350km bullet train and establish work.Along with the operation of opening of the continuous speed-raising of passenger train and high speed passenger dedicated railway, the speed-raising of lorry also launches gradually.Train speed up is had higher requirement to brake friction material, developed country to the development of train braking friction material experienced cast iron, synthetic brake lining/watt, iron-based and copper base sintering brake lining/watt stage, wherein technology is the most ripe, most widely used be powder metallurgy brake pad/watt.
Powder metallurgy braking material claims again sintering metal braking material, is that to take metal and alloy thereof be matrix, adds friction component and lubricant component, the composite material made from powder metallurgy process.Powder metallurgy braking material has enough intensity, suitable and stable friction factor, and stable working is reliable, wear-resisting and pollute the advantages such as few, is application one of material more widely in modern braking material family.
Adopt means of a powder metallurgy technique to produce brake shoe and brake lining, not only on performance quality, have advantages of outstanding, in the design of component, also have flexibility in the variation of product.Adopt means of a powder metallurgy technique can change arbitrarily the component of material, can avoid the casting defects such as the dendritic segregation of loose, shrinkage cavity in conventional fabrication processes, material structure and grain growth, contribute to improve every mechanical property of part.By means of a powder metallurgy technique, prepare train braking brake shoe and brake lining has been obtained very large success, the powder metallurgy friction material system that to have formed P/m Iron Base, copper base, iron/copper base be main body.Relation between the composition of material, technique etc. and performance has been carried out to a lot of research, and these researchs improve constantly the production technology of powder metallurgy friction material and product performance.
Locomotive powder metallurgy brake block not only has good braking ability, and braking antithesis is not produced to heel and toe wear and damage, and the adhesion between wheel, rail is not produced to injurious effects, free from environmental pollution.In Chinese patent ZL97215240.7, ZL200610051247.1, ZL200820107750.9 in disclosed powder metallurgy brake block, be all first by powder frictional material pressure sintering on steel backing, then by its riveted joint or be welded on large watt of back.The linkage structure intensity of riveted joint is low, poor stability, and while particularly frequently using on the vehicle of adjust operation, riveted structure is easily deviate from, and security incident occurs.Although and adopt welded structure can overcome the deficiency of riveted structure, but still there is manufacturing process complexity and the high shortcoming of cost.
Summary of the invention
The invention provides a kind of powder metallurgical brake shoe for railway locomotive, for overcoming above deficiency.
Powder metallurgical brake shoe for railway locomotive of the present invention, described brake shoe comprises watt back of the body and a friction material block, described watt of knapsack drawn together watt nose and locating slot, described friction material block is made by powder metallurgical technique, described friction material block in pressure sintering stage of powder metallurgical technique together with described watt of back of the body direct sintering, the weight percent that it is characterized in that described friction material block consists of: graphite 12-14%, copper 3-5%, manganese 1-3%, chromium 1-3%, nickel 1-3%, aluminium 1-2%, molybdenum disulfide 2-5%, mullite 2-5%, molybdenum trioxide 2-4%, all the other are iron.
Brake shoe of the present invention has simple in structure, and manufacturing process flow is short, and the advantage of low cost of manufacture, and powder metallurgy brake block stable friction factor of the present invention, wear and tear little, long service life.
Accompanying drawing explanation
Fig. 1 is powder metallurgy brake block structure of the present invention.
Embodiment
The present invention is described with reference to the accompanying drawings.
Fig. 1 is powder metallurgy brake block structural representation of the present invention.Powder metallurgy brake block of the present invention comprises watt back of the body 1 and a friction material block 5.
The of the present invention watt of back of the body 1 comprises watt nose 2, locating slot 3 and steel backing 4.Watt nose 2, locating slot 3 and steel backing 4 independent impact briquettings respectively, be then welded together to form a watt back of the body 1.
Friction material block 5 is made by powder metallurgical technique, and wherein the weight percent of friction material block consists of: graphite 12-14%, copper 3-5%, manganese 1-3%, chromium 1-3%, nickel 1-3%, aluminium 1-2%, molybdenum disulfide 2-5%, mullite 2-5%, molybdenum trioxide 2-4%, all the other are iron.In process for making, first according to the above ratio various raw materials are mixed, then compressing, more compressing briquet and the above-mentioned watt of back of the body 1 are packed in sintering mold and fitted together.Reinstall pressurized sintering furnace and complete sintering process, 1030 ℃ of sintering temperatures.In sintering process, friction material block 5 is sintered together with a watt back of the body 1.
Brake shoe of the present invention has simple in structure, and manufacturing process flow is short, and the advantage of low cost of manufacture, and powder metallurgy brake block stable friction factor of the present invention, wear and tear little, long service life.
Embodiment 1
Use low carbon steel plate by watt nose 2, locating slot 3 and steel backing 4 independent impact briquettings respectively, be then welded together to form a watt back of the body 1.
Friction material block 5 is made by powder metallurgical technique, and wherein the weight percent of friction material block consists of: graphite 12%, and copper 5%, manganese 3%, chromium 3%, nickel 3%, aluminium 2%, molybdenum disulfide 5%, mullite 2%, molybdenum trioxide 4%, all the other are iron.In process for making, first according to the above ratio various raw materials are mixed, then compressing, more compressing briquet and the above-mentioned watt of back of the body 1 are packed in sintering mold and fitted together.Reinstall pressurized sintering furnace and complete sintering process, 1030 ℃ of sintering temperatures.In sintering process, friction material block 5 is sintered together with a watt back of the body 1.
Embodiment 2
Use low carbon steel plate by watt nose 2, locating slot 3 and steel backing 4 independent impact briquettings respectively, be then welded together to form a watt back of the body 1.
Friction material block 5 is made by powder metallurgical technique, and wherein the weight percent of friction material block consists of: graphite 14%, and copper 3%, manganese 1%, chromium 1%, nickel 1%, aluminium 1%, molybdenum disulfide 2%, mullite 5%, molybdenum trioxide 2%, all the other are iron.In process for making, first according to the above ratio various raw materials are mixed, then compressing, more compressing briquet and the above-mentioned watt of back of the body 1 are packed in sintering mold and fitted together.Reinstall pressurized sintering furnace and complete sintering process, 1030 ℃ of sintering temperatures.In sintering process, friction material block 5 is sintered together with a watt back of the body 1.
Embodiment 3
Use low carbon steel plate by watt nose 2, locating slot 3 and steel backing 4 independent impact briquettings respectively, be then welded together to form a watt back of the body 1.
Friction material block 5 is made by powder metallurgical technique, and wherein the weight percent of friction material block consists of: graphite 13%, and copper 4%, manganese 2%, chromium 2%, nickel 2%, aluminium 1%, molybdenum disulfide 4%, mullite 4%, molybdenum trioxide 3%, all the other are iron.In process for making, first according to the above ratio various raw materials are mixed, then compressing, more compressing briquet and the above-mentioned watt of back of the body 1 are packed in sintering mold and fitted together.Reinstall pressurized sintering furnace and complete sintering process, 1030 ℃ of sintering temperatures.In sintering process, friction material block 5 is sintered together with a watt back of the body 1.
Claims (1)
1. a powder metallurgical brake shoe for railway locomotive, it is characterized in that, described brake shoe comprises watt back of the body and a friction material block, described watt of knapsack drawn together watt nose and locating slot, described friction material block is made by powder metallurgical technique, described friction material block is in pressure sintering stage of powder metallurgical technique together with described watt of back of the body direct sintering, and the weight percent of described friction material block consists of: graphite 12-14%, copper 3-5%, manganese 1-3%, chromium 1-3%, nickel 1-3%, aluminium 1-2%, molybdenum disulfide 2-5%, mullite 2-5%, molybdenum trioxide 2-4%, all the other are iron;
The process step of described brake shoe is:
Use low carbon steel plate by the independent impact briquetting respectively of watt nose (2), locating slot (3) and steel backing (4), be then welded together to form a watt back of the body (1);
According to the above ratio various raw materials are mixed, then compressing, again compressing briquet and the above-mentioned watt of back of the body (1) are packed in sintering mold and fitted together, reinstall pressurized sintering furnace and complete sintering process, 1030 ℃ of sintering temperatures, friction material block in sintering process (5) is sintered together with a watt back of the body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010278275.3A CN102401051B (en) | 2010-09-10 | 2010-09-10 | Powder metallurgical brake shoe for railway locomotive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010278275.3A CN102401051B (en) | 2010-09-10 | 2010-09-10 | Powder metallurgical brake shoe for railway locomotive |
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| CN102401051A CN102401051A (en) | 2012-04-04 |
| CN102401051B true CN102401051B (en) | 2014-12-03 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486172B (en) * | 2013-10-15 | 2015-10-28 | 句容市睿远科技有限公司 | A kind of high ferro train brake shoe friction piece material and preparation method thereof |
| CN105987103B (en) * | 2015-02-10 | 2019-04-26 | 苏州东南佳新材料股份有限公司 | A kind of use for electric locomotive powder metallurgy brake block |
| CN108506391A (en) * | 2018-05-04 | 2018-09-07 | 刘育锋 | Powder metallurgy brake shoe for locomotive engine |
| IT201900016835A1 (en) * | 2019-09-20 | 2021-03-20 | Cofren Srl | PAIR OF DISC / BRAKE FRICTION FOR RAILWAY VEHICLES |
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| CN1032195A (en) * | 1987-09-19 | 1989-04-05 | 北京摩擦材料厂 | A kind of friction plate and manufacture method thereof |
| CN1896171A (en) * | 2006-04-05 | 2007-01-17 | 中国科学院金属研究所 | Bi-continuous-phase composite friction material of foaming silicon carbide/metal, its member and preparation |
| CN101284311A (en) * | 2008-04-16 | 2008-10-15 | 杭州余杭钱潮摩擦材料有限公司 | Sintered copper alloy brake-holder block and preparation method |
| CN101314708A (en) * | 2007-05-29 | 2008-12-03 | 北京北摩高科摩擦材料有限责任公司 | Iron-based powder metallurgy friction material |
| CN101382173A (en) * | 2008-08-28 | 2009-03-11 | 向兴碧 | High speed disc type brake pad pottery friction body and method for producing same |
| CN101571173A (en) * | 2009-06-16 | 2009-11-04 | 博深工具股份有限公司 | Brake block for high-speed train and preparation method thereof |
| CN101644304A (en) * | 2009-09-04 | 2010-02-10 | 大连交通大学 | Metal base firing brake block with double-layer structure and manufacturing method thereof |
| JP5179232B2 (en) * | 2008-03-21 | 2013-04-10 | 株式会社マキタ | Tabletop cutting machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05179232A (en) * | 1991-12-26 | 1993-07-20 | Toshiba Tungaloy Co Ltd | Sintered metallic friction material for brake |
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2010
- 2010-09-10 CN CN201010278275.3A patent/CN102401051B/en active Active
Patent Citations (8)
| 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 |
| CN1896171A (en) * | 2006-04-05 | 2007-01-17 | 中国科学院金属研究所 | Bi-continuous-phase composite friction material of foaming silicon carbide/metal, its member and preparation |
| CN101314708A (en) * | 2007-05-29 | 2008-12-03 | 北京北摩高科摩擦材料有限责任公司 | Iron-based powder metallurgy friction material |
| JP5179232B2 (en) * | 2008-03-21 | 2013-04-10 | 株式会社マキタ | Tabletop cutting machine |
| CN101284311A (en) * | 2008-04-16 | 2008-10-15 | 杭州余杭钱潮摩擦材料有限公司 | Sintered copper alloy brake-holder block and preparation method |
| CN101382173A (en) * | 2008-08-28 | 2009-03-11 | 向兴碧 | High speed disc type brake pad pottery friction body and method for producing same |
| CN101571173A (en) * | 2009-06-16 | 2009-11-04 | 博深工具股份有限公司 | Brake block for high-speed train and preparation method thereof |
| CN101644304A (en) * | 2009-09-04 | 2010-02-10 | 大连交通大学 | Metal base firing brake block with double-layer structure and manufacturing method thereof |
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Address after: 100094 Haidian District, Beijing, Shanghai town, xinxinli village, South Railway 500 meters north. Patentee after: Beijing Tianyi good high-tech materials Limited by Share Ltd Address before: 100094 Haidian District, Beijing, Shanghai town, xinxinli village, South Railway 500 meters north. Patentee before: Beijing Tianyi good new materials Limited by Share Ltd |