News Center

The company has established the enterprise goal of "survival by quality, reputation by quality, and development by quality. Strengthen the training of technical personnel, and constantly enrich the first-line technical force to ensure the normal operation of the quality assurance system.

Surface whitening treatment of stainless steel tank


Release time:

2019-05-17

Stainless steel tank surface whitening treatment: stainless steel is after rolling, binding, welding or heating and other artificial surface baking, resulting in black oxide skin. This hard gray black oxide skin is mainly composed of two components of eo4NiCr2O4 and NIF. Previously, hydrofluoric acid and nitric acid were widely used for strong corrosion. This method is expensive, polluting the environment, harmful to humans, corrosive, and has been phased out. At present, there are two main methods for the treatment of oxide scale: 1. Sand blasting (pill) method: stainless steel storage tank mainly adopts the method of spraying beads to remove the black oxide scale on the surface. 2. Chemical method:

Stainless steel tank surface whitening treatment:
Stainless steel is baked through artificial surfaces such as rolling, binding, welding or heating to produce black oxide skin. This hard gray black oxide scale is mainly composed of two components of EO4 NiCr2O4 and NIF. Previously, hydrofluoric acid and nitric acid were widely used for strong corrosion. This method is expensive, polluting the environment, harmful to humans, corrosive, and has been phased out.
At present, there are two main methods for the treatment of oxide scale:
1. Sand blasting (pill) method:
Stainless steel storage tank mainly adopts the method of spraying microbeads to remove the black oxide scale on the surface.
2. Chemical method:
Inorganic additive liquid, no pollution pickling passivation paste, room temperature non-toxic cleaning liquid. So as to achieve the purpose of the white color of stainless steel storage tank. After treatment, it basically looks like a dull color. This method is more suitable for large and complex products.