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A kind of brake friction lining material with high stable friction coefficient and preparation method thereof

A technology of friction coefficient and friction plate, which is applied in the field of brake friction plate materials with high and stable friction coefficient and its preparation, can solve the problems of low wear resistance, easy wear of brake pads, low impact strength, etc., and achieve service life The effect of long, stable friction coefficient and high pressing density

Active Publication Date: 2021-04-02
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention designs and develops a brake friction lining material with a high and stable friction coefficient. The invention solves the problems of low impact strength, low wear resistance and brake lining in existing materials by adding iron powder to the material while controlling the iron content. The problem of easy wear of blocks
[0005] The present invention has designed and developed a method for preparing a brake friction lining material with a high and stable friction coefficient. Problems of low strength, low wear resistance, and easy wear of brake pads

Method used

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  • A kind of brake friction lining material with high stable friction coefficient and preparation method thereof
  • A kind of brake friction lining material with high stable friction coefficient and preparation method thereof
  • A kind of brake friction lining material with high stable friction coefficient and preparation method thereof

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Effect test

Embodiment 1

[0042] Take 604g of copper powder, 203g of iron powder, 58g of tin powder, 10g of chromium powder, 10g of silicon dioxide, TiO 2 15g, graphite 100g, graphite sheet length is 200-400μm, width is 180-200μm, thickness is 25-30μm; firstly mix other materials except graphite fully according to the composition ratio, then add graphite and mix well; mix The finished powder is cold-pressed at a pressure of 560 MPa, and kept for 3 minutes after forming; it is sintered under a hydrogen atmosphere at a temperature of 1120° C., and the sintering time is 40 minutes.

Embodiment 2

[0044] Take 616g of copper powder, 185g of iron powder, 43g of tin powder, 6g of chromium powder, 20g of silicon dioxide, TiO 2 25g, graphite 105g, graphite sheet length is 200-400μm, width is 180-200μm, thickness is 25-30μm; firstly mix other materials except graphite fully according to the composition ratio, then add graphite and mix well; mix The finished powder is cold-pressed at a pressure of 560 MPa, and kept for 3 minutes after forming; it is sintered under a hydrogen atmosphere at a temperature of 1120° C., and the sintering time is 40 minutes.

Embodiment 3

[0046] Take 609g of copper powder, 200g of iron powder, 50g of tin powder, 6g of chromium powder, 10g of silicon dioxide, TiO 2 20g, graphite 105g, graphite flake length is 200-400μm, width is 180-200μm, thickness is 25-30μm; firstly mix other materials except graphite thoroughly according to the composition ratio, then add graphite and mix fully and evenly; mix The finished powder is cold-pressed at a pressure of 560 MPa, and kept for 3 minutes after forming; it is sintered under a hydrogen atmosphere at a temperature of 1120° C., and the sintering time is 40 minutes.

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Abstract

The invention discloses a brake friction plate with a high stable friction coefficient. The brake friction plate material comprises copper-based metallurgical powder and is prepared from, by weight, 10.0-10.5% of graphite, 0.6-1.0% Cr, 18.5-20.3% of Fe 4.3-5.8% of Sn, 1.5-2.5% of TiO2, 1-2% of SiO2 and the balance Cu. The invention discloses a preparation method of the brake friction plate with the high stable friction coefficient, the copper-based metallurgical powder used for preparing the brake friction plate is mixed in proportion and then subjected to cold pressing, the pressure intensityis 560 MPa, the compression speed is 170 mm / min, the powder is formed at 560 MPa and then kept at 3 min, sintering is conducted under the dissociated ammonia shielding gas condition, the sintering temperature is 1,120 DEG C, and the sintering time is 40 min.

Description

technical field [0001] The invention relates to the field of brake friction material sheets, in particular to a brake friction sheet material with high and stable friction coefficient and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of high-speed railways, the requirements for various performances of high-speed trains have also increased correspondingly, especially the braking performance. Due to the hidden danger of thermal damage to the wheel tread, traditional tread braking can only be applied to occasions where the speed is lower than 160km / h. It is generally used as a supplementary form of disc braking to improve the adhesion of the tread. At present, high-speed trains generally adopt high-power disc brakes in the world. The disc brake has the advantages of simple structure, reliable braking, good heat dissipation and high thermal decay resistance, and the disc brake is axially loaded without additional bending...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/02B22F3/10B22F1/00B22F5/00C22C9/00C22C1/05C22C1/10
CPCB22F1/0003B22F3/02B22F3/1007B22F5/00C22C1/10C22C9/00
Inventor 陈华段振鑫韩英
Owner CHANGCHUN UNIV OF TECH
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