After the shell is welded, the next process is painting. The forms are common paint, metallic paint and pearlescent paint. Automobile painting process: putty scraping, polishing and painting. Its basic process: (1) body rust prevention and internal painting: completed by the sheet metal worker according to the body condition. (2) Polishing and trimming the bevel edge: using
P60~ 180# sandpaper is used to polish the parts that need putty after body sheet metal repair. (3) Dust removal and cleaning: use pressure gun and desilication cleaning agent.
Remove dust and stains from the car body. (4) Sticking: Sticking textured paper with reverse sticking technology. (5) Primer: mix 4: 1 red primer and spray.
Polishing 1~2 layer to expose the position of metal, and then drying. (6) putty fil: a lot of mixed functional putty is fil in that concave part of the car body,
Leave it at 20 degrees Celsius for 30 minutes. (7) Polishing putty: polish with P60~240# sandpaper, and check the flatness by hand feeling or polishing indicator layer.
Pinholes and impressions. (8) Extra-young putty: choose it when necessary to fill pinholes, sandpaper marks, etc. (9) Polishing: thoroughly polish with P280# sandpaper.
Old paint with intermediate paint should be sprayed on the grinder. (10) Dust removal and cleaning: use pressure gun and desiliconization cleaner to remove dust and stains on the car body.
(1 1) Sticking: Sticking masking paper. (12) Spraying intermediate paint: mix 2~3 layers of multifunctional intermediate paint, with an interval of 5~ 10 minute for each layer, and then dry at the temperature of Celsius.
60 degrees for 30 minutes, and then spray polishing indicator layer. (13) Polishing intermediate paint: polish the dried intermediate paint with P320~400# sandpaper. ( 14)
Inspection: Check the grinding effect and carry out micro-filling. (15) Dust removal and cleaning: remove dust and stains from the car body. (16) Sticking: Sticking to the car body.
Shielding. (17) Dust removal and cleaning: firstly, blow off dust spots on the car body with a pressure gun, remove stains on the car body with a desiliconization cleaning agent, and then blow off the car body with a pressure gun.
The dust in the gap of the car body is finally removed from the car body with a sticky dust cloth. (18) topcoat spraying: spray 2~3 layers, with an interval of 5~ 10 minute for each layer.
Adding curing agent and diluent according to the temperature. (19) Primer spraying: spray 2~3 layers of plain paint, silver powder paint or pearlescent paint with an interval of 5~ 10 for each layer.
Minutes. (20) Spray painting: mix and spray two layers of varnish every 5- 10 minute, and add curing agent and diluent according to the temperature. (2 1)
Drying: let stand for 5~ 10 minute and dry at 60℃ for 30 minutes. Drying and curing need to be judged. If you feel sticky with your fingers, the surface is dry. if
The touch without fingerprints is half hard and half dry, and the press without fingerprints is completely dry. (22) Waxing and polishing. (23) build a car. involve
The purpose of the car is to prevent the spray from spraying in the wrong place. The traditional basic covering materials are covering paper and covering tape. The width of automobile cover paper varies from
7 cm ~ 9 1 cm, it is heat-resistant, generally safe to use in the drying room, and has good wet strength, which can prevent solvent penetration (note: newspapers cannot be used.
Cover, newspaper heat resistance is not strong, and contains printing ink, which will dissolve in paint solvent and penetrate into the topcoat below, causing pollution). . . total
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