Factors affecting corrosion prevention of channel steel

　　Factors affecting corrosion prevention of channel steel

　　During the use of channel steel, it should be cleaned regularly to remove harmful substances that have been attached to the surface for a long time. Especially in environments with chloride ions, it is necessary to prevent chloride ions from adhering to the surface of channel steel for a long time and concentrating in water. For example, stainless steel is used for food utensils. After each contact with food, it should be washed to avoid chloride ion effects and damage to the passivation film.

　　316L stainless steel pipe ensures correct wiring and safe grounding. Carefully organize the electrode surface, correct the electrode viewpoint, and if necessary, machine it on a lathe to adjust the equipment to spot welding condition. Clean up impurities such as water, rust, and oil on the surface of the workpiece, and wipe the surface of the workpiece with industrial alcohol.

　　Factors affecting corrosion prevention of channel steel

　　Prepare welding specimens by adjusting different welding currents and discharging times according to the above experimental method. As the welding current increases, the solder joint increases, and the bonding force increases. If the current is too high, it is easy to form solder failure; The extension of discharge time results in a decrease in current density, which is consistent with the effect of reducing current, and vice versa, with the effect of adding current.

　　The raw material of channel steel acts as a barrier between corrosive media and 316L stainless steel pipes, preventing corrosion of 316L stainless steel pipes. It has outstanding corrosion resistance in the production process of pulp and paper. Moreover, it is resistant to corrosion from the ocean and corrosive industrial atmospheres. So it's not much different from carbon steel. But both have poorer cutting function with higher carbon content. The skill requirements of the new specification are higher than those of the old version, and the requirements for product quality also exceed the old specification.

　　The film-forming theory suggests that corrosion inhibitors react with corrosive media to generate insoluble compounds. A layer of insoluble metal film is placed on the surface of 316L stainless steel pipe, which acts as a shielding effect on the metal and hinders its corrosion. The corrosion inhibition power increases with the increase of inhibitor concentration, but when the concentration reaches a certain value, the inhibitor concentration is added, and the corrosion inhibition power actually decreases. Oxidative corrosion inhibitors such as Chromate and dichromate, double Chromate and dichromate and hydrogen peroxide belong to this type. At lower temperatures, the corrosion inhibition power is higher. Increasing temperature leads to a decrease in adsorption efficiency and intensification of corrosion