4130 chromoly 30CrMo4 1.7225 SCM430 30CrMo steel round hollow bars need to be cleaned when used. Many people do not know where to start cleaning. Next, the editor of 4130 chromoly 30CrMo4 1.7225 SCM430 30CrMo steel round hollow bars will tell us. Let’s explain what you need to pay attention to when cleaning.

1. Anti-rust principle of stainless steel

There are so many varieties of stainless steel that it can’t be stewed in one pot. There are a dazzling variety of industrial stainless steels with good performance in various fields. The principle of stainless steel not rusting is very simple. The main reason is that because the steel contains chromium, there will be an oxide film called a "passivation film" on the surface of the steel. The oxide film is extremely thin and almost invisible to the naked eye. If the oxide film is damaged by other factors, the chromium in the steel will regenerate with the oxygen in the medium to form a passivation film, which will protect the steel. A variety of alloying elements can improve the corrosion resistance of stainless steel.

2. Precautions when wiping stainless steel

Alcohol is the first choice when wiping stainless steel products. It is easier to wipe the grease on stainless steel with alcohol. Gently wipe it for about three or four minutes and the grease will disappear. Remember to rinse off the alcohol with clean water after wiping. If it is a relatively "stubborn" stain, you can use baking soda to wipe it. Finally, remember to rinse with clean water. Remember, when wiping stainless steel, never use hard objects such as steel wool balls to wipe it. However, using extremely hard objects can cause serious scratches on the stainless steel surface.