Corrosion Resistance Of Stainless Steel Coils

Shandong Xinhe International Trade Co., Ltd2022-07-01

Shandong Xinhe International Trade Co., Ltd. is an enterprise specializing in the production and sales of stainless steel. Our company has been operating the following stainless steel series materials for many years: stainless steel rods (round rods, square rods, hexagonal rods); stainless steel wires (wire rods, spring wires, screws) wire); stainless steel strip; stainless steel plate (coiled plate, open plate, medium and heavy plate, cold-rolled plate, hot-rolled plate, etc.); stainless steel pipe (seamless pipe, welded pipe, decorative pipe, square pipe, rectangular pipe, round pipe and other imported pipes) and other products.

Below we briefly introduce the corrosion resistance of stainless steel coils, mainly in three aspects:

The first is the surface cleanliness of the stainless steel coil. For stainless steel alloys, the smoother the surface of the stainless steel, the lower the roughness, the harder it is for foreign matter to adhere to the surface of the stainless steel, and the foreign matter is not easy to adhere, so the corrosion on the surface of the stainless steel will be reduced to the lowest point, so the surface of the stainless steel should be as far as possible. With a finished surface. In addition, the final passivation cleaning of the stainless steel plate should also be carried out carefully, so that the residual acid solution can promote the anodic reaction, protect the integrity of the film layer, and ensure that the corrosion resistance of the surface of the stainless steel plate is enhanced.

The second is chloride ion, which is very harmful to stainless steel. Therefore, we must strictly control the content of chloride ion in the passivation solution during the passivation process of the surface of the stainless steel plate. Hazards of the board. Many passivation chemical materials have limited requirements for chloride ions, and there are strict water quality requirements for chloride ions in the configuration of passivation solution water and cleaning water to ensure that the passivation products do not contain chloride ions.

The third factor that affects the passivation film on the surface of stainless steel coils is the internal factor of stainless steel. We all know that the low nickel content in stainless steel leads to low passivation performance of stainless steel, so the martensite content in stainless steel and chromium and nickel are The content of it has a great influence on the passivation performance of the surface of the stainless steel plate.

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