CN1108939C - Composite brake shoe with great friction coefficient and its manufacture - Google Patents
Composite brake shoe with great friction coefficient and its manufacture Download PDFInfo
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- CN1108939C CN1108939C CN 00124569 CN00124569A CN1108939C CN 1108939 C CN1108939 C CN 1108939C CN 00124569 CN00124569 CN 00124569 CN 00124569 A CN00124569 A CN 00124569A CN 1108939 C CN1108939 C CN 1108939C
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- brake shoe
- friction coefficient
- composite brake
- great friction
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Abstract
The present invention discloses a composite brake shoe with a great friction coefficient for goods trains, which uses ammono ester, phenolic resin, cure cotton, composite fibers, graphite, barium sulfate, ferrous powder, butyronitrile, zircon powder, rubber powder, feldspar powder and alumina as raw materials; the raw materials are dried, pulverized, uniformly mixed and put in a mould for vulcanization and solidification. The composite brake shoe prepared by the method of the present invention has the characteristics of stable friction coefficient, good abrasion resistance performance, no smoke dust, no noise and no spark in a braking process, and is a special environmental protection type braking safety accessory for high-speed goods trains and heavy load goods trains of railways.
Description
The present invention relates to a kind of brake shoe of railway vehicle braking device.
The present invention also comprises the manufacture method of brake shoe.
At present, domestic rolling stock is used for the brake shoe of brake equipment, and it is mainly combined by steel backing and brake shoe body, and it is main material that its brake shoe body mainly adopts asbestos, steel fiber, graphite, feldspar powder, iron powder, adopts the wet processing method to make.When rolling stock produces the negative friction effect with composite brake shoe at frequent glancing impact.As relatively at a high speed, easy generation spark in service, noise, smell under the fully loaded transportation condition, friction coefficient is low and shortcoming such as layering occurs, and can only be limited on the vehicle in 90 kilometers/hour and installs and uses, and can not satisfy current rail vehicle demand for raising speed; In addition, vehicle is installed this composite brake shoe, and especially operation glancing impact in forest zone easily produces fire.Asbestos material produces asbestos dirt and causes atmospheric contamination in the operation braking simultaneously; On the other hand,, easily cause the collision of storeroom, be laminar flow regime heat, skewness etc. owing to adopt the restriction of wet processing.
The objective of the invention is for solving the deficiency of above-mentioned brake shoe synthetic material and process, and a kind of do not have in braking procedure flue dust, noiseless, arc-free lorry composite brake shoe with great friction coefficient and manufacture method thereof are provided.It can be released to heat energy in the atmosphere with stronger heat-transfer rate at the heat of instantaneous frequent braking generation, guarantee the safe operation of car brakeing and driving device.
For achieving the above object, composite brake shoe of the present invention is made (its consumption proportion is a weight portion) by following raw material
Aminolipid 0.8-1.2 phenol resin 12-12.5 health five cotton 7-8
Composition fiber 5.5-6 graphite 7-7.5 barium sulfate 22-23
The fine 1.5-2 zirconium of iron powder 13.5-14 fourth English powder 2.5-3
Rubber powder 3-5 feldspar powder 2-3.5 aluminium oxide 0.04-0.05
Prescription preferred weight ratio range of the present invention is:
Aminolipid 1-1.18 phenol resin 12-12.5 health five cotton 7-7.8
Composition fiber 5.6-5.9 graphite 7-7.3 barium sulfate 22-23
The fine 1.8-2 zirconium of iron powder 13.7-14 fourth English powder 2.7-3
Rubber powder 3-4.5 feldspar powder 2-3 aluminium oxide 0.04-0.05
Optimum weight proportioning of the present invention is:
Aminolipid 1.2 phenol resins 12 health five cottons 7.5
Composition fiber 5.8 graphite 7 barium sulfate 23
The fine 2 zirconium English powder 2.7 of iron powder 14 fourths
Rubber powder 4 feldspar powders 2.5 aluminium oxide 0.04
The manufacture method of producing composite brake shoe is:
1, above-mentioned raw materials is carried out drying, except that Kang Wumian, composition fiber, other is more than raw material pulverizing to 200 order;
2, above-mentioned whole raw materials are put into high speed mixing machine in described ratio and carry out even batch mixing;
3, mixed raw material is put into cold stamping die by metering, the system formed body, the demoulding is standby;
4, the type body is put into temperature at 150-155 ° hot pressing die cavity, and put into steel backing, matched moulds vulcanizes, the abundant exhaust of die sinking, and matched moulds is cured again, and cure time is 40 minutes, the demoulding;
5, the brake shoe after the demoulding is deburred, steel backing sprays paint, and is finished product.
Physical and mechanical properties of the present invention the results are shown in following table:
Temperature: 24 ℃
| The corner title | Unit | Technical index | Testing result |
| Compression strength | MPa | ＞25 | 27 |
| Amount of elasticity | GPa | ＜1.8 | 1.0 |
| Density | /cm3 | Definite value 5% | 2.3 |
| Strength under shock | KJ/m2 | ＞2.0 | 3.5 |
| Ball hardness | HB | ＜16 | 14.2 |
| Oil absorption room temperature 24h | ％ | ＜1.5 | 1.0 |
| Hygroscopic character room temperature 24h | ％ | ＜1.5 | 0.6 |
The result shows that every technical index meets railroad industry TB/T2403-93 standard-required.
Effect of the present invention shows that the characteristics that it has are: brake shoe is the important accessory on the railway truck, and the quality of its performance directly has influence on the safe in operation of rolling stock.Therefore, it is higher to the invention solves the resin content that present domestic most of producer adopts butylbenzene or butadiene rubber to cause, cause under the defibrator process condition of high temperature, heat fade is serious, the factor of unstable properties, and adopted nitrile rubber to make the modifier of resin, thereby deceleration and stopping performance and modulus of elasticity that brake shoe is good have been guaranteed.In the middle of proportioning process, for preventing the inhomogeneous some friction that causes hard material of raw material, make in the prescription pulverulent material all adopt high fineness, low ratio, the principle of polymolecular collision, in pressing process, make full use of the requirement of the relevant use of the railroad industry standard TB/T2403-93 composite brake shoe with great friction coefficient limit, adopt the sticking method technology of highly adhesive and steel backing, guaranteed not shell, fall piece; Also have stable frictional behaviour simultaneously, it is installed on the High-Speed Freight Vehicle, the comparable middle and high phosphorus brake shoe above friction coefficient that doubles, and therefore, the pressure with 1/2nd can obtain identical braking effect, has improved the braking force of lorry when high-speed cruising.Because of no asbestos composite brake shoe with great friction coefficient resistance to abrasion is good, be 4-5 times of middle and high phosphorus brake shoe service life, and can significantly reduce the work capacity that the adjustment brake cylinder colludes the shellfish stroke and changes brake shoe, shortens to be listed as and examine production time, reduced the consumption costs of maintenance and brake shoe; The high friction of lorry of the present invention composite brake shoe has brakes square from weak point in the high-speed overload braking procedure, no flue dust, noiseless, no spark, can satisfy and be used for the railway truck that speed per hour reaches 120 kilometers/hour, be high-quality, the special-purpose brake safe accessory of environment-friendly type rail freight of present composite brake shoe.
Specific embodiments of the invention
Take by weighing raw material by following proportioning:
Aminolipid 2 phenol resins 13 health five cottons 10
Composition fiber 7 black 10 barium sulfate 245.5
The fine 5 zirconium English powder 4 of iron powder 15 fourths
Rubber powder 6 feldspar powders 3 aluminium oxide 0.15
Its manufacture method is as follows:
Choose above-mentioned raw materials earlier, after check, carry out drying, except that health five cottons and composition fiber raw material, other raw material all is crushed to more than 200 orders, adopt high fineness, low ratio, the principle of polymolecular collision, with whole raw materials in described ratio, adopt three grades of batch mixing methods, be that resin, rubber, conditioning agent masterbatch mix and put into high speed mixing machine batch mixing, till mixing, then batch mixing put into cold stamping die by metering, the system formed body, the demoulding is standby; Type body after the demoulding is put into temperature at 150-155 ° hot pressing die cavity, put into steel backing then, and matched moulds vulcanizes, in curing process, produce gas in the hot-die chamber, answer the abundant exhaust of die sinking, after exhaust finished, matched moulds was cured again, cure time is 40 minutes, the demoulding, the brake shoe after the demoulding should be deburred, and steel backing is sprayed paint, be finished product, pack then.
Claims (4)
1, composite brake shoe with great friction coefficient is characterized in that it is to be made by the following weight proportion raw material:
Aminolipid 0.8-1.2 phenol resin 12-12.5 health five cotton 7-8
Composition fiber 5.5-6 graphite 7-7.5 barium sulfate 22-23
The fine 1.5-2 zirconium of iron powder 13.5-14 fourth English powder 2.5-3
Rubber powder 3-5 feldspar powder 2-3.5 aluminium oxide 0.04-0.05
2, by the described composite brake shoe with great friction coefficient of claim 1, wherein the weight proportion of each raw material is:
Aminolipid 1-1.18 phenol resin 12-12.5 health five cotton 7-7.8
Composition fiber 5.6-5.9 graphite 7-7.3 barium sulfate 22-23
The fine 1.8-2 zirconium of iron powder 13.7-14 fourth English powder 2.7-3
Rubber powder 3-4.5 feldspar powder 2-3 aluminium oxide 0.04-0.05
3, by the described composite brake shoe with great friction coefficient of claim 1, wherein the weight proportion of each raw material is:
Aminolipid 1.2 phenol resins 12 health five cottons 7.5
Composition fiber 5.8 graphite 7 barium sulfate 23
The fine 2 zirconium English powder 2.7 of iron powder 14 fourths
Rubber powder 4 feldspar powders 2.5 aluminium oxide 0.04
4, a kind of manufacture method that is used for above-mentioned composite brake shoe with great friction coefficient is: get raw material drying, be crushed to 200 order fine powders; Whole raw materials are put into the even batch mixing of high speed mixing machine in described ratio; Batch mixing is put into the demoulding of cold stamping die system formed body by metering; The type body is put into temperature at 150-155 ° hot pressing die cavity, put into the steel backing matched moulds and vulcanize, breathing a mould, matched moulds solidifies again, solidifies the demoulding in 40 minutes; Hacking, steel backing spray paint and are finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00124569 CN1108939C (en) | 2000-09-22 | 2000-09-22 | Composite brake shoe with great friction coefficient and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00124569 CN1108939C (en) | 2000-09-22 | 2000-09-22 | Composite brake shoe with great friction coefficient and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1344640A CN1344640A (en) | 2002-04-17 |
| CN1108939C true CN1108939C (en) | 2003-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00124569 Expired - Fee Related CN1108939C (en) | 2000-09-22 | 2000-09-22 | Composite brake shoe with great friction coefficient and its manufacture |
Country Status (1)
| Country | Link |
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| CN (1) | CN1108939C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4089509B2 (en) * | 2003-05-22 | 2008-05-28 | 日立化成工業株式会社 | Friction material composition and friction material using friction material composition |
| CN101768323B (en) * | 2008-12-31 | 2011-09-07 | 重庆振华制动器有限公司 | Material for preparing steel fiber brake pad |
| CN102221059B (en) * | 2011-06-07 | 2012-11-28 | 杭州萧山红旗摩擦材料有限公司 | Wet brake friction plate and manufacturing method thereof |
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2000
- 2000-09-22 CN CN 00124569 patent/CN1108939C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1344640A (en) | 2002-04-17 |
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