Process method for nitriding austenitic stainless steel material
A technology of austenitic stainless steel and process method, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., to achieve the effect of simple process, easy promotion and good practicability
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[0013] Examples:
[0014] Next, the austenitic stainless steel specimens made of 1Cr18Mn8Ni5N are subjected to nitriding treatment, and all 3 specimens are processed into a size of Φ10×20mm, placed in an ordinary electric furnace, and annealed at 810°C for 2 hours;
[0015] Clean specimens 1 and 2 with gasoline, and clean specimen 3 with acetone and blow dry;
[0016] Mix 8g of ammonium chloride and 390g of quartz sand evenly, place them at the bottom of the nitriding box, and then add 80g / m to the nitriding box 3 Ammonium chloride. The important function of adding ammonium chloride is to use it to decompose in the nitriding furnace to produce HCI, remove the passivation film on the surface of the workpiece, and it also promotes the formation of metal nitrides;
[0017] Put the test pieces into the trays in the nitriding box, seal the nitriding box, and pass ammonia gas until the ammonia decomposition rate is zero, push the nitriding box into the furnace, and use the process parameter...
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