Anti-explosion mining mechanical brake pad and preparation method thereof

A brake pad and mechanical technology, applied in the field of explosion-proof mine mechanical brake pads and their preparation, can solve the problems of increased friction surface temperature of brake pads and brake discs, safety accidents, etc. Effect of flame retardant and high temperature resistance

Inactive Publication Date: 2018-08-24
ALLWAYS FRICTION MATERIAL KUNSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the car is under continuous or emergency braking, the temperature of the friction surface of the brake pads and brake discs rises rapidly, and the local "flash point" temperature can reach 1000°C, which will generate sparks and static electricity, thereby igniting the combustible gas in the mine , leading to safety accidents

Method used

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  • Anti-explosion mining mechanical brake pad and preparation method thereof
  • Anti-explosion mining mechanical brake pad and preparation method thereof

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Experimental program
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preparation example Construction

[0026] The preparation method of the mining machinery brake pad comprises the following steps:

[0027] (1) Mixing: weigh each component according to the formula, and mix them evenly in a high-speed mixer;

[0028] (2) Hot pressing molding: take the mixture processed in step (1) and put it into a hot pressing mold for hot pressing molding, and the pressure is 250kg / cm 2 , hot-pressing time 8 minutes, hot-pressing temperature 160 ℃;

[0029] (3) Heat treatment: place the green body after hot pressing in a heat treatment furnace for heat treatment, and adopt a gradient heat treatment system to heat treat the green body. The initial temperature of heat treatment is 120°C, the end temperature is 220°C, and the heating rate is 2°C / min; and when the temperature is 120°C, 130°C, 155°C, 165°C, 180°C, 200°C and 220°C, keep warm for 90 minutes;

[0030] (4) Grinding: Grinding the green body processed through step (3) with an electric grinding head whose rotating speed is 80r / min to o...

Embodiment 1

[0032] An explosion-proof mine mechanical brake pad is prepared from the raw materials of the following formula by weight percentage:

[0033] Chopped glass fiber 20%, aramid fiber 9%, friction powder 6%, petroleum coke powder 4%, flake graphite 10%, magnesium oxide micropowder 7%, barium sulfate 10.5%, carbon black 6%, powdered nitrile rubber 18.5%, anti-aging agent TMQ 0.6%, vulcanization accelerator MBTS 0.4%, high temperature resistant resin 8%.

Embodiment 2

[0035] An explosion-proof mine mechanical brake pad is prepared from the raw materials of the following formula by weight percentage:

[0036] Chopped glass fiber 12%, aramid fiber 10%, friction powder 8%, petroleum coke powder 3%, flake graphite 9%, magnesium oxide micropowder 6%, barium sulfate 11%, carbon black 6%, powdered nitrile rubber 24%, anti-aging agent TMQ 1.5%, vulcanization accelerator MBTS 0.5%, high temperature resistant resin 9%.

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Abstract

The invention discloses an anti-explosion mining mechanical brake pad. The brake pad is prepared from the following raw materials of a formula in percentages by weight: 10-30% of chopped glass fibers,4-10% of aramid fibers, 3-8% of frictional powder, 3-5% of petroleum coke powder, 6-10% of flake graphite, 3-8% of magnesium oxide micro-powder, 5-16% of barium sulfate, 5-10% of carbon black, 12-25%of powdered acrylonitrile-butadiene rubber, 0.5-1.5% of an anti-ageing agent TMQ, 0.2-0.5% of a vulcanization accelerator MBTS and 6-15% of high-temperature-resistant resin. The invention further discloses a preparation method of the anti-explosion mining mechanical brake pad. The anti-explosion mining mechanical brake pad is good in fire protection ability and anti-static ability, and is suitable for various mining machines.

Description

technical field [0001] The invention relates to the field of brake pads, in particular to an explosion-proof mining mechanical brake pad and a preparation method thereof. Background technique [0002] In the automobile braking system, the automobile brake pad is a key component of class A, and its performance is directly related to the safety and reliability of automobile operation. With the increase of the driving speed of modern automobiles, the requirements for automobile brake pads are becoming more and more stringent. Because the energy absorbed by automobile brake pads is proportional to the square of the speed, taking a car as an example, when braking at a speed of 50km / h, 100km / h and 200km / h, the heat load of braking is 282.61kJ, 1130.44 kJ and 4521.74kJ, the surface temperature of automobile brake pads is as high as 500-700°C. On the other hand, in order to ensure the stability of the car when the car is running at high speed, the wheel diameter of the car must be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
Inventor 雷海瑞
Owner ALLWAYS FRICTION MATERIAL KUNSHAN CO LTD
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