201 stainless steel tube

201 stainless steel tube has: acid resistance, alkali resistance, high density without pinholes and other characteristics, is the production of a variety of cases, watchband back cover high-quality materials. Mainly used in decorative pipes, industrial pipes, and some shallow stretching products. It is widely used.

201 stainless steel decorative pipe has unique strength, high wear resistance, superior anti-corrosion performance and not easy to rust and other excellent characteristics. Therefore, it is widely used in the chemical industry market expectations, food machinery, mechanical and electrical industry, environmental protection industry, household appliances industry and home decoration, finishing industry is in a weak position, Zou Zhuozui told everyone, give people a magnificent and noble feeling.

First, chemical corrosion

1, surface pollution: the oil, dust and acid, alkali, salt attached to the surface of the workpiece are converted into corrosive media under certain conditions, and some components of the chemical reaction to strengthen the inspection, resulting in chemical corrosion and rust. 2, surface scratches: a variety of scratches on the passivation film damage, so that the stainless steel decorative pipe protection ability is reduced, easy to react with chemical media high-efficiency wear-resistant, chemical corrosion and rust.

3, cleaning: After pickling passivation cleaning is not clean resulting in residual liquid can not be repaid, direct corrosion of stainless steel decorative pipe (chemical corrosion).

201 stainless steel decorative tube

Second, electrochemical corrosion:

1, carbon steel pollution: scratches caused by contact with carbon steel and corrosion medium form galvanic cells and produce electrochemical corrosion.

2, cutting: cutting slag, splashing and other easy to rust substances attached to the corrosion medium to form a galvanic cell and produce electrochemical corrosion.

3, baking school: the composition of the flame heating area and the metallographic structure change and are not uniform, and the corrosion medium forms a galvanic cell and produces electrochemical corrosion.

4, welding: physical defects in the welding area (biting edge, porosity, cracks, non-fusion, non-welding penetration, etc.) and chemical defects (coarse grain, grain boundary chromium, segregation, etc.) and corrosion medium to form galvanic cells and produce electrochemical corrosion.

5, material: stainless steel decorative pipe chemical defects (uneven composition, S, P impurities, etc.) and surface physical defects (loose, sand holes, cracks, etc.) are conducive to the formation of galvanic cells with corrosive media and produce electrochemical corrosion.

6, passivation: pickling passivation effect is not good, resulting in uneven or thin passivation film on the surface of stainless steel decorative pipe, easy to form electrochemical corrosion.

7, cleaning: the residual pickling passivation liquid and 201 stainless steel decorative pipe chemical corrosion products and stainless steel to form electrochemical corrosion.