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Automobile wheel hub surface vacuum coating treatment technique

A technology of vacuum coating and automobile wheel hub, which is applied in vacuum evaporation coating, metal material coating process, device for coating liquid on the surface, etc. The effect of strength, quality improvement, and efficiency improvement

Inactive Publication Date: 2010-01-27
兰州大成科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wheel hub electroplating not only has the disadvantages common to the above-mentioned electroplating industry, such as the generation of a large amount of pollutants, low material utilization, high demand for water resources and metal resources and serious waste, the price is expensive, and with the cost of sewage treatment and metal market prices In addition to being more expensive due to the rising price of automobiles, the main reason is that due to the special requirements of automobile wheels, chromium plating on the surface of the wheels is required, and a large amount of carcinogenic hexavalent chromium is produced during the plating process of the wheels.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Pretreatment: use a 1:1000 mixture of cleaning solution and pure water in an ultrasonic cleaning machine to degrease and clean the surface of the hub with a release agent.

[0026] 2. Surface spraying, the pretreated automobile wheel hub is sprayed with base powder, which is mixed with 50% polyester powder and 50% epoxy resin; orange peel is removed; medium powder is sprayed, the thickness of the medium powder is 60m, and the curing temperature is 220℃, time 20min; drying;

[0027] 3. Ion cleaning, the wheel hub that has been sprayed and dried on the surface is cleaned by glow plasma in a vacuum environment to change the microstructure of the sprayed surface, and the glow plasma is generated by high-voltage electric field discharge; the specific process is: pre-vacuumize , when the chamber vacuum is 3×10 -3 Pa, start to accurately fill the vacuum chamber body with inert gas nitrogen through the mass flow meter, and maintain the chamber pressure at 4Pa; turn on the b...

Embodiment 2

[0032] 1. Pretreatment: use a 1:1000 mixture of cleaning solution and pure water in an ultrasonic cleaning machine to degrease and clean the surface of the hub with a release agent.

[0033] 2. Surface spraying, the pretreated automobile wheel hub is sprayed with base powder, which is mixed with 50% polyester powder and 50% epoxy resin; orange peel is removed; medium powder is sprayed, the thickness of the medium powder is 60 μm, and the curing temperature is 220℃, time 20min; drying;

[0034] 3. Ion cleaning, the wheel hub that has been sprayed and dried on the surface is cleaned by glow plasma in a vacuum environment to change the microstructure of the sprayed surface, and the glow plasma is generated by high-voltage electric field discharge; the specific process is: pre-vacuumize , when the chamber vacuum is 3×10 -3 Pa, start to accurately fill the vacuum chamber body with inert gas nitrogen through the mass flow meter, and maintain the chamber pressure at 5Pa; turn on the...

Embodiment 3

[0039] 1. Pretreatment: use a 1:1000 mixture of cleaning solution and pure water in an ultrasonic cleaning machine to degrease and clean the surface of the hub with a release agent.

[0040] 2. Surface spraying, the pretreated automobile wheel hub is sprayed with base powder, which is mixed with 50% polyester powder and 50% epoxy resin; orange peel is removed; medium powder is sprayed, the thickness of the medium powder is 60m, and the curing temperature is 220℃, time 20min; drying;

[0041]3. Ion cleaning, the wheel hub that has been sprayed and dried on the surface is cleaned by glow plasma in a vacuum environment to change the microstructure of the sprayed surface, and the glow plasma is generated by high-voltage electric field discharge; the specific process is: pre-vacuumize , when the chamber vacuum is 3×10 -3 Pa, start to accurately fill the vacuum chamber body with inert gas nitrogen through the mass flow meter, and maintain the chamber pressure at 4Pa; turn on the bo...

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PUM

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Abstract

The invention relates to a vacuum coating process for an automobile hub surface, including preprocessing, surface spraying, ion cleaning, vacuum coating and preparing protective layer. The metal layer of the automobile hub surface is deposited by vacuum coating, avoiding large consumption of water resource, producing of large amounts of heavy-metal-containing waster water and additional cost arising therefrom; secondly, besides saving large amounts of heavy metal, because of the flatting effect of paint, the cost of traditional process is lowered, the process is simplified, the efficiency is improved, the labor intensity of workers is reduce; thirdly, since the protective layer and the metal layer are prepared in a same vacuum body, thus avoiding additional processes and saving labor time, the prepared coat has stable chemical performance which does not modify under high temperature and ultraviolet irradiation, assuring the hub color; by using ion cleaning, good bonding capability of the coat is guaranteed, quality of the automobile hub is greatly improved.

Description

technical field [0001] The invention relates to the technical field of vacuum coating on the surface of metal and plastic products, in particular to a vacuum coating process on the surface of an automobile hub. Background technique [0002] At present, China has become a major automobile production country. In the first half of 2007, the total number of automobiles produced and sold in China was 4.457 million and 4.374 million respectively, a year-on-year increase of 22.4% and 23.3% respectively. The country needs at least 450 million tons of crude oil a year , of which automobile oil will account for 55% of the country’s entire oil consumption.” At present, the surface treatment of high-end and high-end wheels mostly adopts electroplating technology. Wheel hub electroplating not only has the disadvantages common to the above-mentioned electroplating industry, such as a large amount of pollutants, material utilization rate Low, high demand and serious waste of water resource...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23G1/00B05D1/12B08B3/12B08B7/00C23C14/24C23C14/35
Inventor 范多旺范多进令晓明王成龙孔令刚武福邓志杰苗树翻姚小明
Owner 兰州大成科技股份有限公司