What are the problems in the stainless steel polishing process?

There should be a special storage rack, the storage rack should be wooden or painted carbon steel bracket or pad with rubber pad to isolate from carbon steel and other metal materials. During storage, the storage location should be convenient for lifting and transportation, relatively isolated from other material storage areas, and should have protective measures to avoid contamination of stainless steel with dust, oil, and rust. Problems in the processing of stainless steel products!

1. Weld defects: Weld defects are more serious, which are compensated by manual mechanical grinding treatment methods. The resulting grinding marks cause uneven surfaces and affect the appearance.

2. Inconsistent surface: only pickling and passivating the welding seam, which also causes uneven surface and affects the appearance.

3. Scratches are difficult to remove: the whole is pickled and passivated, and various scratches generated during the process cannot be removed, and carbon steel, splashes and other impurities that adhere to the surface of stainless steel due to scratches and welding splashes , Resulting in chemical corrosion or electrochemical corrosion and rust in the presence of corrosive media.

4. Uneven polishing and polishing passivation: After manual polishing and pickling and passivation treatment, it is difficult to achieve a uniform and uniform treatment effect for large-area workpieces, and it is impossible to obtain an ideal uniform surface. And the cost of working hours and auxiliary materials are also higher.

5. Pickling capacity is limited: pickling passivation paste is not omnipotent, it is difficult to remove because of plasma cutting and flame cutting and black oxide scale.

6. Scratches caused by human factors are more serious: During lifting, transportation and structural processing, scratches caused by human factors such as bumps, dragging, and hammering are more serious, which makes the surface treatment more difficult, and it also causes corrosion after treatment The main reason.

7. Equipment factors: In the process of bending and bending of profiles and plates, scratches and creases are also the main reason for rust after treatment.

8. Other factors: During the procurement and storage of stainless steel raw materials, bumps and scratches due to lifting and transportation are also serious, which is also one of the causes of rust. Lifting of stainless steel parts: When lifting, special lifting equipment should be used, such as lifting straps, special chucks, etc. It is strictly forbidden to use steel ropes to avoid scratching the surface; and when lifting and placing, it should avoid scratches caused by impact bumps. Transportation of stainless steel parts: During transportation, transportation tools (such as trolleys, battery cars, etc.) should be used, and they should be clean and have isolation protection measures to prevent dust, oil, and rust from contaminating stainless steel. Prohibition of dragging to avoid bumps and scratches.