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ShengHui factory casting process introduction:Surface treatment

Shot Blasting & Cleaning,Inding &Polishing
Stainless steel accessories often require surface treatment to enhance corrosion resistance, aesthetics, and other properties. The following are some common surface treatments for stainless steel accessories:

Polishing/Polishing:
This is a method to improve the surface finish and gloss of stainless steel. This can be achieved by mechanical polishing or chemical polishing. Mirror polishing is the pinnacle of stainless steel polishing technology, which pursues the ultimate smoothness and reflectivity of the surface. This advanced polishing technology is usually 100% manual polishing and mainly goes through the following steps:
Rough grinding: Use abrasives to initially grind the stainless steel surface to remove roughness and imperfections.
Medium Grinding: Further uses finer abrasives for medium grinding to make the surface smoother.
Fine grinding: Detailed grinding using very fine abrasives to ensure a uniform and fine surface.
Polishing: Apply polishing paste or polishing liquid, and use a cloth wheel or felt wheel to rotate at high speed to produce a mirror effect on the stainless steel surface.

2. Pickling:
Pickling can remove the oxide scale on the surface of stainless steel and the oxides in the welding heat-affected zone, and improve its surface finish.

3. Sandblasting:
Sandblasting is a method of grinding away the surface oxide layer and dirt by spraying sand or other particles at high speed to increase surface roughness.

4. Anodizing:
Thickening the oxide layer formed on the surface of stainless steel to improve its hardness and corrosion resistance. It is often used for aluminum alloys.

5. Electroplating:
The surface of stainless steel can be electroplated, such as electroplating of chromium, electroplating of zinc, etc., to increase the corrosion resistance and aesthetics of the surface.

6. Nitriding:
Nitriding is to treat the surface of stainless steel in high temperature and nitrogen atmosphere to form a nitrided layer with higher hardness to improve surface hardness and wear resistance.

7. Spray coating:
Spraying a layer of coating on the surface can not only change the color of the stainless steel, but also provide additional protection against corrosion.

8. Passivation:
Passivation is to treat the surface of stainless steel in an acidic solution to remove surface iron elements and form a protective oxide layer to improve corrosion resistance.

9. Sandblasting etching:
Through the combination of sandblasting and chemical etching, patterns or text can be formed on the surface of stainless steel for decoration and identification.