1, coating preparation

According to the parameters requirement of coating, suitable PPS resin and auxiliary material are chosen. Thick slurry is prepared with the addition of diphenyl oxide. Before usage, proper amount of acetone or ethanol are added in order to convenience for operation.

2, Treatment of base materials

1) Through sanding treatment, the surface coated is keeping smooth and the cast parts are without sentus and sand explosion. The edge angle areas should be to maximize use of excessive arc R ≥ 5mm.

2) Descaling, sand-blasting, brushing and chemical treatment to remove oxide or uncontaminated Oil;