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Brake disc and preparation method thereof

A technology for brake discs and brake pads, applied in the field of brake discs and their preparation, can solve the problems of demanding production equipment, low production efficiency, and low coating bonding strength, etc.

Active Publication Date: 2015-04-22
江苏古田自动化股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, the surface coating technology of metal materials includes: laser cladding method, high temperature self-propagating sintering technology, powder metallurgy technology, material vapor deposition technology (including: chemical vapor deposition (CVD), physical vapor deposition (PVD)), etc., but these methods , there are deficiencies such as demanding production equipment, low production efficiency, and low coating bonding strength

Method used

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  • Brake disc and preparation method thereof
  • Brake disc and preparation method thereof
  • Brake disc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Embodiment 1: the preparation method of brake disc, comprises the steps:

[0072] 1. First prepare a tungsten plate 2, in which the purity of tungsten should be controlled at 99.7%. The tungsten plate 2 should be surface treated first, the steps are as follows:

[0073] The first step is pickling, choose 300ml / L hydrochloric acid, and then rinse with running water;

[0074] In the second step of pickling, choose 300ml / L hydrofluoric acid, and then rinse with running water;

[0075] The third step is surface grinding, using 800 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the tungsten plate 2 is controlled at 0.2 mm.

[0076] 2. According to the size of the brake disc, use polystyrene foam to make the lost foam of the brake disc 6. According to the working force of the brake disc, the main wear parts are the upper and lower surfaces of the brake disc brake pad. According to this Fix the tungsten plate 2 on the upper and low...

Embodiment 2

[0086] Embodiment 2: the preparation method of brake disc, comprises the steps:

[0087] 1. Prepare a tungsten plate 2 first, in which the purity of tungsten should be controlled at 99.8%. The tungsten plate 2 should be surface treated first, the steps are as follows:

[0088] The first step is pickling, 60ml / L phosphoric acid, and then rinse with running water;

[0089] The second step is pickling, 200ml / L sulfuric acid, and then rinse with running water;

[0090] The third step is surface grinding, using 1000 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the tungsten plate 2 is controlled at 0.8mm.

[0091] 2. According to the size of the brake disc, use polystyrene foam to make the lost foam of the brake disc 6. According to the working force of the brake disc, the main wear parts are the upper and lower surfaces of the brake disc brake pad. According to this Fix the tungsten plate 2 on the upper and lower surfaces of the brake...

Embodiment 3

[0101] Embodiment 3: the preparation method of brake disc, comprises the steps:

[0102] 1. Prepare a tungsten plate 2 first, in which the purity of tungsten should be controlled at 99.8%. The tungsten plate 2 should be surface treated first, the steps are as follows:

[0103] The first step is pickling, 120ml / L hydrogen peroxide, and then rinse with running water;

[0104] The second step is pickling, 240ml / L hydrogen peroxide, and then rinse with running water;

[0105] The third step is surface grinding, using 1000 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the tungsten plate 2 is controlled at 1 mm.

[0106] 2. According to the size of the brake disc, use polystyrene foam to make the lost foam of the brake disc 6. According to the working force of the brake disc, the main wear parts are the upper and lower surfaces of the brake disc brake pad. According to this Fix the tungsten plate 2 on the upper and lower surfaces of the...

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Abstract

The invention aims to provide a brake disc; carbide coating layers are arranged on surfaces of a working part of the brake disc; and the invention provides a preparation method for obtaining the brake disc. The brake disc is provided with the carbide coating layers on the upper and lower surfaces of the working part. A pseudo-single crystal WC compact ceramic layer, a micron WC ceramic layer and a compound layer of WC and a matrix are gradiently distributed in sequence from outside to inside, and are applied to the surface of carbon steel. The brake disc can be applied to the surface of the carbon steel. A matrix and tungsten compound body obtained through casting is externally leaded in an external carbon source, and is heated and insulated to form the carbide coating layers on the surfaces of the matrix; and the coating layers and the matrix are metallurgically bonded, so that the binding force is strong, the problems of weak binding force and easy dropping of particles caused by traditional non-metallurgical bonding between hard particles and metal matrix, and the wear resistance of the working surface of the brake disc is largely improved.

Description

technical field [0001] The invention relates to a brake disc with a wear-resistant coating and a preparation method thereof, in particular to a brake disc with a gradient composite coating and a preparation method thereof, in particular to a brake disc with a gradient composite coating applied to the surface of carbon steel and its preparation method. Background technique [0002] The brake disc is an essential part of all vehicle braking systems. It is fixed on the axle and rotates with the wheel. When braking, the brake block is pressed onto the brake disc under the push of the caliper piston. Through the brake block and the The friction between the brake discs reduces the wheel speed to achieve the purpose of vehicle deceleration and braking. With the acceleration of the vehicle, the brake disc will bear the pressure and friction of the brake block, and wear will occur in the relative movement with the brake block, especially when there are debris such as sand and gravel...

Claims

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Application Information

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IPC IPC(8): F16D65/12F16D69/02B22C9/04B22D18/06B22D19/00C23C8/64
Inventor 许云华赵娜娜梁淑华钟黎声燕映霖叶芳霞任冰邹军涛肖鹏
Owner 江苏古田自动化股份有限公司
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