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Automobile brake disc anti-corrosion treatment method

A technology for automobile braking and anti-corrosion treatment, which is applied in anti-corrosion coatings, pretreatment surfaces, and devices for coating liquids on surfaces. The effect of excellent weather resistance

Inactive Publication Date: 2015-08-19
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of easy rust and large wear of brake discs existing in the existing surface treatment technology, the present invention provides an anti-corrosion manufacturing method for coating nano-graphene on automobile brake discs

Method used

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  • Automobile brake disc anti-corrosion treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A. First, clean and phosphate the brake disc of the car. Specifically include: immerse the brake disc in acetone solvent for 20 minutes to remove surface oil. Then immerse the brake disc in an ultrasonic pool filled with acetone, and perform ultrasonic treatment for 10 minutes to remove internal oil stains. Then immerse the brake disc in the dilute sulfuric acid pool and rinse for 5 minutes. Then the workpiece was immersed in a pure water pool for 5 minutes by ultrasonic treatment. Then immerse the workpiece in a commercially available phosphating solution whose temperature is kept at 40°C±2°C, and rinse for 20 minutes. Dry the workpiece at 200°C.

[0022] B. Then use the graphene coating to spray the pre-treated qualified brake discs. The steps are as follows: mix components A and B of the graphene coating at a ratio of 1:1 (mass ratio), and stir at a medium speed for 5 hours. Filter with 80-mesh gauze. After passing the test, use an automatic spraying line to eve...

Embodiment 2

[0027] A. First, clean and phosphate the brake disc of the car. Specifically include: immerse the brake disc in trichlorethylene solvent for 20 minutes to remove surface oil. Then immerse the brake disc in an ultrasonic pool filled with trichlorethylene, and perform ultrasonic treatment for 10 minutes to remove internal oil stains. Then immerse the brake disc in a commercially available pickling pool and rinse for 5 minutes. Then the workpiece was immersed in a pure water pool for 5 minutes by ultrasonic treatment. Then immerse the workpiece in a commercially available phosphating solution whose temperature is kept at 40°C±2°C, and rinse for 20 minutes. Dry the workpiece at 200°C.

[0028] B. Then use the graphene coating to spray the pre-treated qualified brake discs. The steps are as follows: mix components A and B of the graphene coating at a ratio of 1:1 (mass ratio), and stir at a slow speed for 12 hours. Use an 80-mesh stainless steel screen to filter. After passing...

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Abstract

The invention relates to an automobile brake disc anti-corrosion treatment method and concretely relates to an anticorrosion treatment method for coating an automobile brake disc with nanometer graphene. The automobile brake disc anti-corrosion treatment method solves the problem that the prior art easily produces brake disc corrosion and large wear. The anticorrosion treatment method for coating an automobile brake disc with nanometer graphene comprises the following steps of 1, brake disc pretreatment: carrying out degreasing, erosion, ultrasonic cleaning and phosphorization on a brake disc and 2, graphene paint spray-coating. The treated brake disc has a nanometer graphene coating with substantial rust and corrosion resistance on the outer surface, greatly improves brake disc rust and corrosion resistance, prolongs a brake disc service life and effectively reduces brake disc usage risk.

Description

technical field [0001] The invention belongs to a brake disc anti-corrosion treatment process, in particular to an anti-corrosion treatment method for coating nano-graphene on an automobile brake disc. Background technique [0002] The brake disc is a key part of the car braking system. It is assembled with the wheel hub. Through dry friction with the brake lining, a huge friction force is generated, which reduces the wheel speed and decelerates the brake. When driving at high speed, the car starts to brake at a speed of 100km / h, and it takes only a dozen seconds or less to come to a complete stop. The brake disc is subjected to huge wear and the heat generated during the wear (the temperature is as high as 300°C). The material of the brake disc is mostly composed of gray cast iron with high carbon content, and there are many defects such as casting sand holes and pores, the surface is rough, and it is difficult to prevent corrosion. The working environment of the brake dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/08C09D7/12B05D1/02B05D3/02
Inventor 黄平范梅梅范正清唐长林刘兆平
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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