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Automobile body coating method

A coating method and technology for automobile bodies, applied to the surface coating liquid device, coating, etc., can solve the problems of deep feeling and poor color degree, affecting consumers' desire to buy, etc., achieve high color degree, improve color degree of effect

Inactive Publication Date: 2020-04-10
JIANGLING HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to achieve a red car body, the traditional car body painting method is to use the pearlescent paint spraying process, that is, internal spraying CB + external spraying CB + external spraying MB, but the red sprayed by this process has poor depth and color, which affects consumers' desire to buy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for painting an automobile body, comprising the steps of:

[0050] Carry out electrophoretic coating on the body to be painted, specifically put the body to be painted and the corresponding electrodes into the water-soluble paint, connect the power supply, and paint for 3 hours so that the resin and pigments in the paint form a 10um layer on the surface of the body. The water-insoluble paint film makes the electrophoretic roughness of the car body ≤0.26Ra;

[0051] After the electrophoretic coating, the car body is sprayed with intermediate coating, and the rotating speed of the intermediate coating rotary cup is 40000r / min;

[0052] After the mid-coat spraying, the body is sprayed BC1 with red metallic paint, so that the film thickness of the red metallic paint is 6 μm. The red metallic paint contains silver-dollar aluminum powder, which is used to reflect the light evenly, and has a strong metallic feeling and High coverage, the spraying sequence is: first s...

Embodiment 2

[0057] A method for painting an automobile body, comprising the steps of:

[0058] Carry out electrophoretic coating on the body to be painted, specifically put the body to be painted and the corresponding electrodes into the water-soluble paint, connect the power supply, and paint for 2 hours to make the resin and pigments in the paint form a 14um layer on the surface of the body. The water-insoluble paint film makes the electrophoretic roughness of the car body ≤0.26Ra;

[0059] After the electrophoretic coating, the body is sprayed with intermediate coating, and the rotation speed of the intermediate coating rotary cup is 45000r / min;

[0060] After the mid-coat spraying, the body is sprayed BC1 with red metallic paint, so that the film thickness of the red metallic paint is 6 μm. The red metallic paint contains silver-dollar aluminum powder, which is used to reflect the light evenly, and has a strong metallic feeling and High coverage, the spraying sequence is: first spray...

Embodiment 3

[0065] A method for painting an automobile body, comprising the steps of:

[0066] Carry out electrophoretic coating on the body to be painted, specifically put the body to be painted and the corresponding electrodes into the water-soluble paint, connect the power supply, and paint for 2 hours to make the resin and pigments in the paint form a 16um layer on the surface of the body. The water-insoluble paint film makes the electrophoretic roughness of the car body ≤0.26Ra;

[0067] After the electrophoretic coating, the body is sprayed with intermediate coating, and the rotating speed of the intermediate coating rotary cup is 38000r / min;

[0068] After the mid-coat spraying, the body is sprayed BC1 with red metallic paint, so that the film thickness of the red metallic paint is 7 μm. The red metallic paint contains silver-dollar aluminum powder, which is used to reflect light evenly, and has a strong metallic feeling and High coverage, the spraying sequence is: first spray the...

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PUM

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Abstract

The invention provides an automobile body coating method. The method comprises the following steps that, electrophoretic coating is carried out on an automobile body to be coated, so that the electrophoresis roughness of the automobile body is less than or equal to 0.26 Ra; after the electrophoretic coating is completed, floating coat spraying is carried out on the automobile body, wherein the rotating speed of a floating coat spinning cup is 35000-55000 r / min; after the floating coat spraying is completed, the automobile body is subjected to BC1 spraying by using red metallic paint, wherein the colored paint dehydration rate is controlled to be 85%-90%; after the BC-1 spraying is completed, the automobile body is subjected to BC2 spraying by using red plain paint, wherein the colored paint dehydration rate is controlled to be 85%-90% ; after BC2 spraying is completed, varnish spraying is carried out on the automobile body, so that the varnish film thickness meets the condition that the thickness of horizontal plane is larger than or equal to 50 micrometers, and the thickness of vertical surface is larger than or equal to 45 micrometers. According to the automobile body coating method, red metallic paint is adopted in the BC1 spraying, and the red plain paint is adopted in the BC 2 spraying, so that the color matched by the red metallic paint and the red plain paint has good visual depth; and in addition, the color degree of the horizontal plane and the vertical surface of the automobile body is higher, and the red color degree is effectively improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile body coating method. Background technique [0002] With the rapid development of the automobile industry, automobiles have become one of the indispensable means of transportation for people to travel. The number of car ownership is increasing year by year, and more and more people own private cars. When consumers buy cars, car color is one of the important influencing factors. [0003] Red is a traditional color in China, so cars with red bodies are very popular among consumers. At present, in order to achieve a red car body, the traditional car body painting method is to use the pearlescent paint spraying process, that is, internal spraying CB + external spraying CB + external spraying MB, but the red sprayed by this process has poor depth and color, which affects consumers' desire to purchase. Contents of the invention [0004] In view of the above-mentio...

Claims

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Application Information

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IPC IPC(8): B05D7/14
CPCB05D7/14
Inventor 何昀轩胡晓璇左正博龚佳兰杨昭君
Owner JIANGLING HLDG
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