How to blacken 1 mm thick stainless steel pipe

1 mm thick stainless steel tube how to blacken?

One, the liquid immersion method to take special stainless steel blackening agent activation at room temperature directly to the workpiece on the blackening agent immersion for about 10 minutes of water rinsing oil can be closed. This method is suitable for the requirements of not strict discoloration is good.

Two, degrees of low-temperature blackening treatment to take a special blackening agent asked to add a certain proportion of water with a good blackening agent heating 180-200 degrees or so, the workpiece activation after immersion for about 10 minutes -15 minutes of water rinsing oil can be closed. This method is suitable for general requirements.

Three, high-temperature blackening to take stainless steel special blackening salt using a resistance furnace heated to 380-420 degrees or so after the workpiece degreasing rust drying answer to the furnace for 20-30 minutes after quenching or air-cooled rinse oil can be closed. This method is applicable to the appearance of the parts.

Four, steam blackening treatment of the workpiece with a workpiece suspended in the resistance furnace heated to about 480 degrees to the resistance furnace into the steam blackening agent to take the atomization adsorption method to allow blackening. Applicable to general requirements.

Fifth, nitrogen blackening treatment to take the workpiece first nitrided and then oxidized blackening method. This method is applicable to special requirements of the workpiece. Electronics, automobiles and so on.

Sixth, QPQ treatment blackening to take the sulfur-carbon nitrogen **** seepage method to deal with the first and then blackened, the effect is excellent, the practicality of a wide range.