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Commonly used stainless steel surface treatment technology has the following kinds of treatment methods: 1. Surface whitening treatment; 2. Mirror surface bright processing; 3. Surface coloring treatment.
A. Surface whitening treatment: stainless steel in the process, through the coil, bar, welding, or by artificial surface roasted heating, resulting in black oxide. This hard gray-black oxide is mainly NiCr2O4 and NiF two EO4 components, previously used hydrofluoric acid and nitric acid for strong corrosion removal. However, this method is costly, pollute the environment, harmful to humans, more corrosive, and gradually be eliminated. At present, there are two kinds of oxide treatment methods:
Sandblasting (pill) method: The main method is to use micro-glass beads spray, remove the surface of the black oxide.
Chemical method: Use a non-polluting pickling passivation paste and at room temperature without poisoning with the inorganic additive cleaning solution for the dip. So as to achieve the purpose of whitening the color of stainless steel. After dealing with basically looks like a matt color. This method is suitable for large, complex products.
B. Stainless steel surface mirror bright processing methods: According to the complexity of stainless steel products and user requirements can be different, respectively, using mechanical polishing, chemical polishing, electrochemical polishing and other methods to achieve specular gloss. The advantages and disadvantages of these three methods are as follows:
C. Surface coloring: stainless steel coloring not only give a variety of colors of stainless steel products, increase the variety of products, but also improve product wear resistance and corrosion resistance.
Stainless steel has a unique strength, high wear resistance, superior corrosion resistance and not easy to rust and other excellent features. It is widely used in chemical industry, food machinery, electrical and mechanical industry, environmental protection industry, household appliances industry and home decoration, finishing industry, to give people the feeling of gorgeous noble.
Stainless steel application development prospects will be more and more widely, but the development of stainless steel to a large extent determines the extent of its surface treatment technology development.

keywords:Carbon steel seamless pipe

Hebei ChongSheng Special Steel Pipe Co.,Ltd.
Add: YANSHAN COUNTY,HEBEI PROVINCE,CHINA