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Automobile minimally invasive spot paint spraying and repairing method

A point spraying and automobile technology, applied in the field of vehicle maintenance, can solve the problems of long contact time between dust and human body, long maintenance process, and extended maintenance time, so as to achieve clear process, improve mechanical properties and gloss, and improve work efficiency Effect

Pending Publication Date: 2022-07-26
上海钜轩汽车用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the maintenance of automobile paint surfaces is carried out by professional maintenance personnel in repair shops. However, the traditional maintenance process takes a long time, and the dust generated by grinding has a long contact time with the human body, which endangers the health of workers. Manual grinding for a long time is labor-intensive. Low maintenance efficiency
In addition, the traditional putty spraying must be completely dry before grinding, which requires a long drying time, which prolongs the maintenance time and affects the maintenance efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A minimally invasive point spray paint repair method for automobiles, comprising the following steps:

[0037] S1: Clean the damaged parts of the car and level the scars;

[0038] Check the damaged part to determine the degree of damage, the measured scratch depth is 300um, use P320 sandpaper to smooth the damaged part, and then use P600 sandpaper to smooth it;

[0039] S2: Clean the damaged part; set the range from the edge of the damaged part to 10 cm outside the edge of the damaged part as a transition space; cover the area with a radius of 20 cm outside the edge of the transition space with masking paper;

[0040] S3: For the damaged part, spray the primer with a semi-wet spray gun; dry the primer with a paint curing machine; observe whether there are trachoma in the primer, when there is trachoma in the primer, fill it with filling ash; use P800 sandpaper to make the primer The paint is polished smooth; and the interface position of the damaged part and the transi...

Embodiment 2

[0049] S1: Clean the damaged parts of the car and level the scars;

[0050] Check the damaged part to determine the degree of damage, and the measured scratch depth is 720um. First, use P180~P320 sandpaper to polish the damaged part to make a feather-like edge; mix sheet metal ash and curing agent in a ratio of 100:2 to form a mixed sheet metal ash ;Fill the scars with mixed sheet metal ash; then bake it with a paint curing machine; after drying, smooth it with P240 sandpaper, and then smooth it with P600 sandpaper;

[0051] S2: Clean the damaged part; set the range from the edge of the damaged part to 20 cm outside the edge of the damaged part as a transition space; cover the area with a radius of 25 cm outside the edge of the transition space with masking paper;

[0052] S3: For the damaged part, spray the primer with a semi-wet spray gun; use a paint curing machine to dry the primer; observe whether there are trachoma in the primer, when there is trachoma in the primer, fil...

Embodiment 3

[0061] S1: Clean the damaged parts of the car and level the scars;

[0062] Check the damaged part to determine the degree of damage, and the measured scratch depth is 800um. First, use P320 sandpaper to polish the damaged part to get a feather-like edge; mix sheet metal ash and curing agent into a mixed sheet metal ash in a ratio of 100:2; use Mix sheet metal ash to fill in the scars; then bake with a paint curing machine; after drying, use P320 sandpaper to smooth it, and then use P600 sandpaper to smooth it;

[0063] S2: Clean the damaged part; set the range from the edge of the damaged part to 30 cm outside the edge of the damaged part as a transition space; cover the area with a radius of 30 cm outside the edge of the transition space with masking paper;

[0064] S3: For the damaged part, spray the primer with a semi-wet spray gun; use a paint curing machine to dry the primer; observe whether there are trachoma in the primer, when there is trachoma in the primer, fill it ...

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PUM

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Abstract

The invention relates to an automobile minimally invasive spot paint spraying and repairing method which comprises the following steps: S1, cleaning a damaged part, and leveling scars; s2, setting a transition space; shielding the area outside the edge of the transition space by using shielding paper; s3, primer spraying; s4, shielding for oil removal; s5, the single-component colored paint and the diluent are blended into mixed colored paint, the mixed colored paint is subjected to semi-wet spraying, the mixed colored paint is wiped with dust removal cloth every time spraying is conducted, and during spraying, the primer is covered firstly and then gradually transited outwards till no color difference exists in a spraying area; s6, mirror surface baking varnish and auxiliaries are blended into mixed mirror surface baking varnish, and virtual spraying is conducted firstly; then mixed mirror baking varnish is sprayed in a wet spraying mode; drying by using a baking varnish curing machine; s7, roll line water is sprayed; s8, drying by using a baking varnish curing machine; s9, removing the shielding paper; and S10, an efficient grinding agent and a mirror surface reducing agent are smeared, and polishing treatment is conducted through a polishing machine. According to the paint repairing method disclosed by the invention, the damage can be repaired, the local rapid repairing is realized, and the delivery number of automobiles is increased.

Description

technical field [0001] The invention relates to the technical field of vehicle maintenance, and more particularly to a method for minimally invasive spot spraying and repairing of automobiles. Background technique [0002] With the rapid increase in the car ownership rate in my country year by year, the incidence of car scratching accidents is also on the rise, mainly due to scratches, scratches and other damage to the car surface paint. At present, the maintenance of automobile paint surface is carried out by professional maintenance personnel of the repair shop, but the traditional maintenance process takes a long time, and the dust generated by grinding takes a long time to contact the human body, which endangers the health of workers. Manual grinding for a long time is labor-intensive. Maintenance efficiency is low. In addition, the traditional putty must be completely dried before grinding, which requires a long drying time, which prolongs the maintenance time and affe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D1/38B05D3/02B05D3/12
CPCB05D5/005B05D7/584B05D1/38B05D3/12B05D3/0254
Inventor 王海霞
Owner 上海钜轩汽车用品有限公司
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