qizhen0926
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To the nitriding furnace stainless steel vacuum sealed tank into the ammonia, heated to 520 ��, to maintain the appropriate time,
According to the workpiece material and the infiltration layer requirements ranging from 3-90 hours, so that the surface of nitriding workpiece to obtain nitrogen reinforced layer, get high hardness, high wear resistance, high fatigue limit and good wear resistance.Vacuum furnace heat treatment of operational processes
Method of operation:
1. The mold before nitriding must be a workpiece that has been subjected to normalizing or quenched and tempered.
2. First use gasoline and alcohol scrub the surface of the workpiece, no rust, oil, dirt exists.
3. After loading into the furnace, tighten the lid to tighten the lid.burner scrap aluminum melting furnace
4. The furnace and the lid inlet into the cooling water for circulating water cooling. The bottom of the cooling water on the furnace is water inlet, the upper end of the water, the tank alone into the water, separate drainage, the lid of all water pipes can be in accordance with the principle of low into the high in series, by a mouth into the water, a mouth drainage.
5. Before the temperature should be sent to the first exhaust gas, exhaust flow should be more than doubled when used.
Exhaust 10 minutes later, the temperature control instrument (shown below) set to 150 ��, automatic heating switch to open, while the side of the exhaust heating 150 �� to keep 2h exhaust, and then set the temperature control instrument to 530 ��, The ammonia flow is small, keep the furnace positive pressure, the exhaust port has a smaller air pressure upward, when the furnace temperature rose to 530 ��, the constant temperature and constant flow nitriding 3-20h, then the ammonia pressure to increase a little , So that the exhaust to maintain moderate pressure, nitriding 4-70h, and then ammonia pressure is small, back nitrogen 1-2h, cut off the power, stop heating, to a small amount of ammonia, so that the furnace to maintain positive pressure, To 150 �� below to stop the ammonia for the furnace.high quality scrap iron melting induction furnace price
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