Process steps
1. Clean the surface to lay a solid foundation for painting. 2. Spray primer and put on metal "protective clothing". 3. Embedding putty is to fill the defects and make the metal smoother. 4. Multi-pass grinding to ensure smooth surface. 5. Paint to show the bright luster of metal. 6. finally polished, the metal is completely new!
Primer selection
Phenolic aldehyde, ester glue, nitro or alkyd primer are selected, among which alkyd primer has good adhesion and antirust performance, and the combination with nitro varnish also complements each other.
Putty formula
30 parts of gypsum powder, 0/5 part of white thick paint/kloc-,0/0 part of cooked tung oil/kloc-,6 parts of rosin water, appropriate amount of water and 0.25-0.5 part of liquid drier. After the putty is mixed evenly, use a horn piece or scraper to embed the plane, rubber embedded surface and corner. When the putty is dry, polish it with sandpaper.
Painting skill
Use air pump, air filter tank, air duct, spray gun and other equipment. When spraying, keep the distance between the spray gun and the surface of the object 200 ~ 300 mm and the air pressure 0.3 ~ 0.4 MPa. Primer and spray paint should be diluted with thinner, and the spraying speed should be fast and uniform. After spraying, wait for it to dry, then polish it and spray it.