CN101445641A - Wear-resistant material used on locomotive brake shoe - Google Patents
Wear-resistant material used on locomotive brake shoe Download PDFInfo
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- CN101445641A CN101445641A CNA2008102303681A CN200810230368A CN101445641A CN 101445641 A CN101445641 A CN 101445641A CN A2008102303681 A CNA2008102303681 A CN A2008102303681A CN 200810230368 A CN200810230368 A CN 200810230368A CN 101445641 A CN101445641 A CN 101445641A
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Abstract
The invention provides a wear-resistant material used on a locomotive brake shoe, which is made of phenolic resin, reduced iron powder, silica flour, barium sulfate, rubber powder, feldspar powder, barite powder, heavy calcium powder, coke powder and rouge. The prices of Sepiolite cashmere, the reduced iron powder and the like in the wear-resistant material are relative low, so that a brake shoe made of the wear-resistant material has a relative low cost, but the service life thereof is more than 7 times of the service life of a cast iron brake shoe; at the same time, no harmful gas polluting the environment is produced during braking; besides, the brake shoe made of the wear-resistant material has proper hardness, and can cause a locomotive to steadily and gently brake; and the brake shoe made of the wear-resistant material is evenly worn, so that even in bad weathers like rain or snow, no phenomenon of brake shoe adhesion occurs.
Description
Technical field
The present invention relates to a kind of high-abrasive material that is used on the locomotive brake brake shoe.
Background technology
The conventional locomotive brake block is to be made by cast iron basically, cast iron brake shoe drag friction coefficient ratio at normal temperatures is more satisfactory, but locomotive in operation braking brake shoe and wheel tread friction afterwards temperature sharply raise, cause the frictional coefficient of cast iron itself to descend, frictional coefficient only was about 0.15 after heat rose, the reduction of frictional coefficient has caused the damping force deficiency, and locomotive braking distance increases, and causes the safety coefficient of locomotive operation to reduce.The frictional coefficient of brake shoe itself must be greater than 0.25 when the high rotating speed of locomotive was braked; just can guarantee locomotive operation safety; so cast iron brake shoe is eliminated gradually, the substitute is composite brake shoe; as things such as plastics, asbestos, copper powders is the composite brake shoe of main material; but because the brake shoe of asbestos products is in the utilization process, in braking procedure, easily rising fast of friction temperature between brake shoe and the wheel; and in air, discharge some obnoxious flavoures, pollute surrounding enviroment.The composite brake shoe that adopts material mixing such as rubber, graphite to form in addition in the prior art, but quite high with this kind material synthetic brake shoe cost of manufacture, easy to wear relatively, so, this kind brake shoe only is fit to bullet train, and for resembling the used locomotive of metallurgy industry, because of its travel line short out, speed is slow, and stopping distance is short, frequent braking, and the reactive force that each braking is produced is relatively large, so this kind brake shoe is not suitable for metallurgy industry and uses.
The name of Chinese patent 100374337C number bulletin is called " locomotive powder metallurgy brake block " and proposes to adopt the magnesium powder, graphite, and copper powder, silicon-dioxide, silicon carbide, molybdenum powder, chromium powder is made brake shoe.Because graphite and molybdenum powder are the higher starting material of price, so the cost of manufacture of this kind brake shoe is higher relatively, are not suitable for using on the locomotive of metallurgy industry.
Chinese patent 1344640A number disclosed name is called " composite brake shoe with great friction coefficient and preparation method thereof " and proposes to adopt aminolipid 0.8-1.2%, resol 12-12.5%, Kang Shimian 7-8%, conjugated fibre 5.5-6%, graphite 7-7.5%, barium sulfate 22-23%, iron powder 13.5-14%, butyronitrile 1.5-2%, zirconium powder 2.5-3%, rubber powder 3-5%, Feldspar Powder 2-3.5%, aluminum oxide 0.04-0.05% is made brake shoe.Material contents such as resol wherein and Kang Shimian and conjugated fibre are less, promptly can not reduce cost of manufacture, also reach the ideal frictional coefficient, so, adopt this kind material to make brake shoe and also have certain problem.
Summary of the invention
The purpose of this invention is to provide a kind of stable friction factor and in braking procedure, do not have the locomotive brake composite brake shoe that discharges obnoxious flavour.
The high-abrasive material that is used on the locomotive brake brake shoe proposed by the invention is made by the material of following weight percent: resol 18-25%, sepiolite cashmere 18-28%, reduced iron powder 15-22%, ground silica 4-5%, barium sulfate 2-3%, rubber powder 8-15%, Feldspar Powder 3.8-4.8%, ground barium sulfate 4-5.5%, dicalcium powder 5.5-7%, coke powder 3-4.5%, rouge 2-3.2%.Sepiolite cashmere wherein is to pass through the product processed that bursts at the seams by the sepiolite raw ore, is can substitute asbestos to do friction materials and lagging material.If the sepiolite cashmere weight content surpasses 28%, though can increase frictional coefficient, its adhesive property is bad, and is lower than 18%, can cause friction resistance to reduce; The resol weight content is as being higher than 25%, and the cost that can cause making brake shoe increases, and it is lower than 18%, can influence its adhesive property, causes downgrade.
This high-abrasive material is made by the material of following weight percent: resol 21%, sepiolite cashmere 22%, reduced iron powder 18%, ground silica 4.6%, barium sulfate 2.4%, rubber powder 10.2%, Feldspar Powder 4.4%, ground barium sulfate 4.8%, dicalcium powder 6.2%, coke powder 3.8%, rouge 2.6%.
The high-abrasive material that is used on the locomotive brake brake shoe proposed by the invention mainly is to be made by the lower material of prices such as sepiolite cashmere and reduced iron powder, so, the brake shoe cost made from this high-abrasive material is lower, but promptly be more than 7 times of cast iron brake shoe work-ing life, in braking procedure, can not produce the obnoxious flavour contaminate environment simultaneously; In addition, the brake shoe hardness made from this high-abrasive material is suitable, can make steadily braking mildly of locomotive, and even if abrasion evenly at the sleet severe weather, the adherent phenomenon of brake shoe can not occur yet.
Embodiment
Embodiment 1
The material of 1000 kilograms of composite brake shoes of preparation, take by weighing 180 kilograms in resol respectively, 180 kilograms of sepiolite cashmeres, 220 kilograms of reduced iron powders, 50 kilograms of ground silicas, 30 kilograms in barium sulfate, 130 kilograms of rubber powders, 38 kilograms of Feldspar Powders, 40 kilograms of ground barium sulfates, 55 kilograms of dicalcium powders, 45 kilograms of coke powders, 3 kilograms of rouges, after the above-mentioned materials mixing and stirring, it is poured into Heating temperature is in 200-400 ℃ of brake shoe moulds, impact briquetting again, be cooled to normal temperature then, take out the composite brake shoe of making at last.
Embodiment 2
The material of 1000 kilograms of composite brake shoes of preparation, take by weighing 210 kilograms in resol respectively, 220 kilograms of sepiolite cashmeres, 180 kilograms of reduced iron powders, 46 kilograms of ground silicas, 24 kilograms in barium sulfate, 102 kilograms of rubber powders, 44 kilograms of Feldspar Powders, 48 kilograms of ground barium sulfates, 62 kilograms of dicalcium powders, 38 kilograms of coke powders, 26 kilograms of rouges, after the above-mentioned materials mixing and stirring, it is poured into Heating temperature is in 200-400 ℃ of brake shoe moulds, impact briquetting again, be cooled to normal temperature then, take out the composite brake shoe of making at last.
Embodiment 3
The material of 1000 kilograms of composite brake shoes of preparation, take by weighing 250 kilograms in resol respectively, 260 kilograms of sepiolite cashmeres, 150 kilograms of reduced iron powders, 40 kilograms of ground silicas, 20 kilograms in barium sulfate, 80 kilograms of rubber powders, 40 kilograms of Feldspar Powders, 40 kilograms of ground barium sulfates, 70 kilograms of dicalcium powders, 30 kilograms of coke powders, 20 kilograms of rouges, after the above-mentioned materials mixing and stirring, it is poured into Heating temperature is in 200-400 ℃ of brake shoe moulds, impact briquetting again, be cooled to normal temperature then, take out the composite brake shoe of making at last.
Embodiment 4
The material of 1000 kilograms of composite brake shoes of preparation, take by weighing 180 kilograms in resol respectively, 280 kilograms of sepiolite cashmeres, 150 kilograms of reduced iron powders, 40 kilograms of ground silicas, 20 kilograms in barium sulfate, 145 kilograms of rubber powders, 40 kilograms of Feldspar Powders, 40 kilograms of ground barium sulfates, 55 kilograms of dicalcium powders, 30 kilograms of coke powders, 20 kilograms of rouges, after the above-mentioned materials mixing and stirring, it is poured into Heating temperature is in 200-400 ℃ of brake shoe moulds, impact briquetting again, be cooled to normal temperature then, take out the composite brake shoe of making at last.
In embodiment 1-4, described sepiolite cashmere can be selected the A1 level for use, the particle diameter of reduced iron powder, dicalcium powder, rubber powder can be selected 80 orders or the above particle of 80 orders for use, ground silica, barium sulfate, ground barium sulfate, Feldspar Powder particle diameter can be selected 100 orders or the above particle of 100 orders for use, 40 order coke powder particle diameters can be selected 40 orders or the above particle of 40 orders for use, and rouge 2 particle diameters can be selected 200 orders or the above particle of 200 orders for use.
Claims (2)
1, is used for high-abrasive material on the locomotive brake brake shoe, it is characterized in that: this high-abrasive material is made by the material of following weight percent: resol 18-25%, sepiolite cashmere 18-28%, reduced iron powder 15-22%, ground silica 4-5%, barium sulfate 2-3%, rubber powder 8-15%, Feldspar Powder 3.8-4.8%, ground barium sulfate 4-5.5%, dicalcium powder 5.5-7%, coke powder 3-4.5%, rouge 2-3.2%.
2, according to the described high-abrasive material of claim 1, it is characterized in that: this high-abrasive material is made by the material of following weight percent: resol 21%, sepiolite cashmere 22%, reduced iron powder 18%, ground silica 4.6%, barium sulfate 2.4%, rubber powder 10.2%, Feldspar Powder 4.4%, ground barium sulfate 4.8%, dicalcium powder 6.2%, coke powder 3.8%, rouge 2.6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102303681A CN101445641A (en) | 2008-12-30 | 2008-12-30 | Wear-resistant material used on locomotive brake shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102303681A CN101445641A (en) | 2008-12-30 | 2008-12-30 | Wear-resistant material used on locomotive brake shoe |
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| Publication Number | Publication Date |
|---|---|
| CN101445641A true CN101445641A (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102303681A Pending CN101445641A (en) | 2008-12-30 | 2008-12-30 | Wear-resistant material used on locomotive brake shoe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022466B (en) * | 2009-09-16 | 2012-08-08 | 重庆江洲粉末冶金科技有限公司 | Fiber-type dual metal powder metallurgy brake block |
| CN103486172A (en) * | 2013-10-15 | 2014-01-01 | 句容市睿远科技有限公司 | Friction piece material for high-speed rail train brake shoes and preparation method thereof |
| CN106321697A (en) * | 2016-11-04 | 2017-01-11 | 王玮 | Automotive brake lining |
-
2008
- 2008-12-30 CN CNA2008102303681A patent/CN101445641A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022466B (en) * | 2009-09-16 | 2012-08-08 | 重庆江洲粉末冶金科技有限公司 | Fiber-type dual metal powder metallurgy brake block |
| CN103486172A (en) * | 2013-10-15 | 2014-01-01 | 句容市睿远科技有限公司 | Friction piece material for high-speed rail train brake shoes and preparation method thereof |
| 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 |
| CN106321697A (en) * | 2016-11-04 | 2017-01-11 | 王玮 | Automotive brake lining |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20090603 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |