Nitriding method of stainless steel
A technology of stainless steel and nitriding furnace, which is applied in the direction of coating, metal material coating process, solid-state diffusion coating, etc. It can solve the problems of unqualified quality and achieve the effect of good quality, fast speed and high efficiency
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specific Embodiment approach 1
[0013] Specific embodiment one: stainless steel nitriding method in the present embodiment, this method is as follows: stainless steel is packed in the nitriding furnace,
[0014] 1. The first stage of chlorination: at a temperature of 620°C-630°C, the ammonia decomposition rate is 70-75%, and the ammonia flow rate is 3-4m 3 Treat stainless steel for 10 hours under the condition of / h;
[0015] 2. The second stage of chlorination: at a temperature of 620°C-630°C, the ammonia decomposition rate is 75-80%, and the ammonia flow rate is 2-3m 3 Treat stainless steel for 2 hours under the condition of / h;
[0016] 3. Chlorine removal: at a temperature of 635°C-645°C, the ammonia decomposition rate is 80-90%, and the ammonia flow rate is 1-2m 3 Treat stainless steel for 2 hours under the condition of / h;
[0017] Under the condition of nitrogen protection, the temperature of the furnace is lowered to 150°C, and the furnace is air-cooled to complete the nitriding of stainless steel...
specific Embodiment approach 2
[0018] Embodiment 2: This embodiment is different from Embodiment 1 in that the stainless steel is 1Cr11MoNiWVNbN, 2Cr12MoV or 2Cr10MoVNbN. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0019] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the power of the nitriding furnace is 70KW. Others are the same as those in the first or second embodiment.
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