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Bicolor spraying technology for semi-trailer body

A technology for semi-trailers and car bodies, which is applied to coatings, spray booths, spray devices, etc., can solve the problems of layering and peeling off of the color topcoat, affecting the spraying quality, and poor corrosion resistance, so as to reduce spraying costs, slow down discoloration, and improve The effect of service life

Inactive Publication Date: 2019-01-18
石家庄金多利专用汽车有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Semi-trailer spraying is the last process of trailer production. Its purpose is to improve the corrosion resistance and aesthetics of the trailer. Based on actual needs, two-color semi-trailers occupy the vast majority of the market. It is exposed to the sun and rain, so there are higher requirements for the paint on its surface. At present, the spraying of the semi-trailer body is generally completed in four steps: pretreatment, spraying the main color paint, spraying the cover paint, and spraying the clear paint. The car paint layer is thin and the corrosion resistance is poor, and the color topcoat covers the main color topcoat. The main color topcoat and the color topcoat are prone to delamination and peeling off at the overlapping joints, which affects the spraying quality

Method used

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  • Bicolor spraying technology for semi-trailer body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A two-color spraying process for a semi-trailer body includes the following steps:

[0038] (1) Topcoat pretreatment: mix the base paint, curing agent, and thinner, and add the main color additives, so that the weight ratio of the base paint, curing agent, thinner, and main color additives is 90:16:8 :5. Mix thoroughly and evenly to obtain the main color paint; mix the basic paint, curing agent, and diluent, and add the color additive to make the weight ratio of the basic paint, curing agent, diluent, and color additive 90: 16:8:5, mix well and evenly, get over-colored paint;

[0039] (2) Body surface pretreatment: Place the semi-trailer in the spraying and drying integrated room, and the humidity of the spraying and drying integrated room during the spraying and drying of the body is 60%, and the area that does not need spraying treatment is covered with a masking cloth , Take phosphoric acid diluent to spray the spraying area, the molar concentration of phosphoric acid in...

Embodiment 2

[0045] A two-color spraying process for a semi-trailer body includes the following steps:

[0046] (1) Topcoat pretreatment: mix the base paint, curing agent, and thinner, and add the main color additives, so that the weight ratio of the base paint, curing agent, thinner, and main color additives is 105:22:11 :12. Mix thoroughly and evenly to obtain the main color paint; mix the base paint, curing agent, and thinner, and add the color additive to make the weight ratio of the basic paint, curing agent, diluent, and color additive 105: 22:11:13, mix thoroughly and evenly to obtain over-colored paint;

[0047] (2) Pretreatment of the body surface: place the semi-trailer in the spraying and drying integrated room, and the humidity of the spraying and drying integrated room during the body spraying and drying is 50%, and the area that does not need spraying treatment is covered with a masking cloth , Take phosphoric acid diluent to spray the spraying area, the molar concentration of ph...

Embodiment 3

[0053] A two-color spraying process for a semi-trailer body includes the following steps:

[0054] (1) Topcoat pretreatment: mix the base paint, curing agent, and thinner, and add the main color additives, so that the weight ratio of the base paint, curing agent, thinner, and main color additives is 95:18:10 :7. Mix thoroughly and evenly to obtain the main color paint; mix the basic paint, curing agent, and diluent, and add the color additive to make the weight ratio of the basic paint, curing agent, diluent, and color additive 95: 18:10:6, mix well and evenly, get over-colored paint;

[0055] (2) Pretreatment of body surface: Put the semi-trailer in the spraying and drying integrated room, and the humidity of the spraying and drying integrated room during the body spraying and drying is 40%, and the area that does not need spraying treatment is covered with a masking cloth , Take phosphoric acid diluent to spray the spraying area, the molar concentration of phosphoric acid in the...

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Abstract

The invention relates to a bicolor spraying technology for a semi-trailer body, which belongs to the technical field of body spraying, and solves the technology problem of thin spraying layer, poor corrosion resistance and easy delamination at overlap of bicolor semi-trailer body spraying technology in the prior art, the spraying of the semi-trailer body is completed by paint pretreatment, surfacepretreatment of the vehicle body, main color area spraying, color matching area spraying, and varnish spraying, not only the bicolor spraying of the semi-trailer body is achieved, but also through the polishing of a main color area, a color matching area, overlap of the main color area and the color area, the two-layer spraying of main color topcoat and color matching topcoat, the delamination ofthe main color topcoat and the color matching topcoat overlap is reduced, the thickness and corrosion resistance of main color and color-matching surface spraying of car body are improved.

Description

Technical field [0001] The invention relates to the technical field of body spraying, and more specifically, it relates to a semi-trailer body two-color spraying process. Background technique [0002] Semi-trailer spraying is the last process in the production of trailers. Its purpose is to improve the corrosion resistance and aesthetics of the trailer. Based on actual needs, two-color semi-trailers occupy most of the market. During the transportation of two-color semi-trailers, they are often exposed to wind. In the sun and rain, there are higher requirements for the paint on the surface of the semi-trailer. At present, the spraying of the semi-trailer body is generally completed by pretreatment, spraying the main color paint, spraying the color paint, and spraying the transparent paint. This process is not only the body The car paint layer is thin and the corrosion resistance is poor, and the top coat of the main color covers the top coat of the main color. The main color top c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/06B05D5/00B05B16/20B05D3/00B05D3/02
CPCB05D3/007B05D3/0254B05D5/00B05D5/066B05B16/20
Inventor 赵文龙赵红卫
Owner 石家庄金多利专用汽车有限公司
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