How to legalize boiling black

Boiling black, also known as blackening, or bluing. The liquid reacts with the material of the workpiece itself to generate a coating, and the thickness of the film after oxidation treatment is 0.5-1.5 microns, with no significant effect on the size and accuracy of the parts. Oxidation treatment of steel parts is widely used for general protection and decoration of mechanical parts, precision instruments, cylinders, springs, weapons and daily necessities. Its film layer has good abrasion resistance, dark and shiny, extremely beautiful.

Boiling black or black, or blue, as a traditional surface treatment process, with its high-quality appearance, convenient film-forming conditions, unique in the surface treatment process. Generally used in springs, mechanical parts, stamping parts, screws, automobile parts and other steel workpiece surface treatment.