The definition of lacquer surface grinding?

The paint surface grinding is rubbed through the grinding polishing machine, combined with the abrasive rotation on the body paint surface to produce a friction to remove the operation of the lacquer surface oxidation layer and minor scratch.

The body paint surface grinding process is as follows. ① Wash the body: Use the cleaning agent to spray the body evenly, remove the residual wax and oil, wash and dry. ② Determine the location, size, depth and area of ​​scratches or defects. ③ Seal the edge: Use a paper tape to seal the rubber strip and plastic parts on the paint surface, cover the lower half of the front and rear windshield with a large towel to prevent the polishing machine from grinding the rubber strip or plastic edge during use. And the abrasive fly to the glass.
④ Determine grinding materials: In order to determine the type of abrasive, the painting surface needs to be judged. Trial abrasives in small pieces of small blocks. The abrasives are preferred to use mild abrasives. If the paint surface defects are serious, then consider using moderate or severe abrasives. The order of product use must be: “heavy” first, then “middle”, and finally “light”.
⑤ grinding operation process is as follows. a. Wet the grinding grinding plate, install it on the grinding machine, rotate 5s, and throw the excess water. b. Shake the abrasive, pour a little on the sponge grinding plate, apply the grinding plate on the paint surface evenly, and spray a little water (fog -shaped).
C. Adjust the grinding machine speed to 1200? 1800R/min, start the grinding machine, move back and forth straight along the body direction, cover 1/3 between the long trajectory of the grinding disc, without leakage of large area paint. D. Sequence of grinding sites: according to the right car -right front cover — left front cover — right front wing board -right front car door — right rear door — right rear wing board -the order of the trunk cap Half -body.
In the roof, you can open the door, pad the towel by the door, and step on the door. e. When grinding, the grinding plate and the paint surface should be kept at room temperature. When the temperature of the paint surface increases more than 20 ° C, the grinding paint surface is sprayed with water. f.
For the corner of the car, the position of the grinding machine should not be used, and the manual method is used to grind, and the grinding of the mill was dipped with a dry towel. Complete the entire body with paint, including the bumper of the spray paint, not to be too high in the temperature.

Polishing grinding is to rotate Zhao rubbing at high speed on the body paint surface through the grinding/polishing machine, and use the abrasive surface to remove the operation of defects such as surface oxidation layers and light J marks. The paint surface is polished, which is the process of grinding. After grinding the surface of the car paint, a slight polishing marks will be left. The paint surface polishing is to remove these traces.
How to know that polishing and polishing agent is also a grinding agent, a abrasive with a more fine -grained friction material. Depending on the particles of friction material particles or effects, polishing agents can be divided into three types: micro -throw, medium throw and deep throw. Micro -throwing is used to remove extremely fine car paint damage. Generally, it refers to the lacquer surface pollution and acid sex erosion such as bird manure and leaves. However, this kind of mild damage can currently use wax -containing wax to replace micro -throw.
From this point of view, the significance of micro -throwing is not great. The mid -throw and deep throw are mainly used to deal with different degrees of hair scratches. The medium throw is mainly suitable for polishing the transparent paint, and the deep throw is mainly suitable for polishing to ordinary paint. The first step is to wash the car: For the specific content, refer to the gap dirt of the car washing in front of the final seam to ensure that the body is dry and there must be no residual moisture.

It the second step to get asphalt, worm corpse, resin, etc. (1) clean the body first to see the asphalt particles. But if it is a dark car, it is not easy to find, and there is no very indecent feeling. (2) Dip diesel or kerosene on a clean towel and wipe it gently on the asphalt. Or the diesel or kerosene is sprayed in the asphalt in the spray container. (3) Waiting for the asphalt on the body to dissolve. (4) Wipe the dissolved asphalt, if it is not fully dissolved, add more diesel or kerosene to dissolve it. (5) After wiping clean, clean it with water and wipe it clean immediately. Key points: Do not let the asphalt cleaners stay on the surface of the paint for too long. Quality Standard: The whole car has no asphalt, worm corpse, resin trace

three steps: Apply car wax

(1) Use waxed sponge to dip the appropriate amount of car waxes to scratch The method of rotating the small circle is evenly waxed; the size of the circle is based on the lacquer surface of no omitted paint in the circle. The front circle is 1/3 in the front circle, and the circle trajectory is straight along the front and back of the body.

(2) The sequence of waxing of the whole car: divide the paint surface into several parts, press the right front cover — left front cover — right front wing board -right front door door – The order of the reserve box cover the right half body and grind the left half body in the opposite order. Until all the paint surface waxlessly.

(3) Put a thin layer of car wax evenly on all the paint surface, which is obviously covered with a layer of car wax with the paint surface. : Well wax and lit (1) After waxing, the wax surface starts white 5-10 minutes. Wipe it with the back of the hand. There is powder on the back of the hand. The applied paint surface is satisfactory and bright, indicating that the wax is dry. Throw wax with a soft drying towel until the entire watch has no residual wax. (2) After waxing, the glass, bumper, trim, tires, steel rings, etc. are thoroughly cleaned. The order is the same as the wax. Wipe off the wax with a cotton towel and rub the paint surface with synthetic deer skin until the reflection of the paint surface is clearly visible. Key points: After the wax on the body is dry, when it is white, or feel it with your hands (feel the paint surface is smooth), wipe the wax towel too hard, but it must be dry. Pure cotton is required to be moderate. When using it, fold it into a block, and move together with five fingers, pressed on the towel. Quality standards: There are no trace marks and wax marks, no omissions, the reflection is clearly visible, the color of the paint surface is bright, and the feeling of new car

The fifth step: cleaning the gap sequence as applying wax, the residual in the car will be left in the car The car wax in the gap on the surface is cleaned up to keep the car completely clean. Key points: Do not force too much when using a toothbrush. Quality Standard: There is no dirt in the gap, clean.

Sixth step: Plastic glue edge color reduction (upper light) sequence is the same as apply wax, the main point: try not to apply on the paint surface and glass, especially the glass; The reducing agent is a very oily liquid, which is difficult to clean up. Quality standard: bright and oily state.

Sixth step: check -in (reference) vehicle inspection standard: The lacquer surface of the car is clean and neat, and the feel is smooth; the car wax is uniform, the watch is not residual wax or the flower; the brightness and color are even uniformly The lacquer surface has a mirror effect, which can be clearly reflected on the paint surface

Seventh step: on -site cleaning points: tools and materials should be paid attention to return, garbage should be quickly handled (except at the peak period of the traffic flow (except for the peak of the traffic flow, except for the peak of the traffic flow, ), Clean the dirty sponge balls and toothbrushes; Among them, towels and synthetic deer skin are best to wash when they get off work, because waxing and lustering do not stain the towels. On -site quality standards are: clean and neat.

The craftsmanship of the body paint surface is as follows. ① Wash the body: Use the cleaning agent to spray the body evenly, remove the residual wax and oil, wash and dry. ② Determine the location, size, depth and area of ​​scratches or defects. ③ Seal the edge: Use a paper tape to seal the rubber strip and plastic parts on the paint surface, cover the lower half of the front and rear windshield with a large towel to prevent the polishing machine from grinding the rubber strip or plastic edge during use. And the abrasive fly to the glass.
④ Determine grinding materials: In order to determine the type of abrasive, the painting surface needs to be judged. Trial abrasives in small pieces of small blocks. The abrasives are preferred to use mild abrasives. If the paint surface defects are serious, then consider using moderate or severe abrasives. The order of product use must be: “heavy” first, then “middle”, and finally “light”.
⑤ grinding operation process is as follows. a. Wet the grinding grinding plate, install it on the grinding machine, rotate 5s, and throw the excess water. b. Shake the abrasive, pour a little on the sponge grinding plate, apply the grinding plate on the paint surface evenly, and spray a little water (fog -shaped).
C. Adjust the grinding machine speed to 1200? 1800R/min, start the grinding machine, move back and forth straight along the body direction, cover 1/3 between the long trajectory of the grinding disc, without leakage of large area paint. D. Sequence of grinding sites: according to the right car -right front cover — left front cover — right front wing board -right front car door — right rear door — right rear wing board -the order of the trunk cap Half -body.
In the roof, you can open the door, pad the towel by the door, and step on the door. e. When grinding, the grinding plate and the paint surface should be kept at room temperature. When the temperature of the paint surface increases more than 20 ° C, the grinding paint surface is sprayed with water. f.
For the corner of the car, the position of the grinding machine should not be used, and the manual method is used to grind, and the grinding of the mill was dipped with a dry towel. Complete the entire body with paint, including the bumper of the spray paint, not to be too high in the temperature. Essence