hardened and tempered surface blueing's principle
the principle of heating treating with hardened and tempered's surface blueing
the hardened and tempered's surface blueing is also called oxidation treatment,which is produced the thin oxide film on the steel strip's surface.the thickness is 0.5-1.5um,and the main component is Fe3O4,and coating's color and lustre is based on the apparent condition and the material alloy composition of the heating treat spring steel strip,as well as the process condition of the oxidation treatment.what is more,if want to make the surface of the steel strip consist of continous and stable blue layer,it must be deal with steel strip's surface with bright,uniform temperature inside the blue furnace,the running speed is stable,furnace oxide gas remain constant.
