Pit nitriding furnace

1. Introdution

Pit nitriding furnace is standard energy-saving cycle operation nitriding resistance furnace .

It is mainly used for nitriding treatment under the medium conditions of ammonia and methanol for all kinds of steel mechanical parts,automobile crankshaft, piston rod, mold , auto slender rods , and can also be used as general pit type heat furnace without any medium in the air .

2. Structure

It consists of furnace shell,furnace lining,heating element,furnace cover,furnace lifting device, hot wind circulation system and cooling system, atmosphere control system ,intelligent electronic control system and son on.

3. Operation cautions

The nitrogen should be firstly supplied into the furnace to exhaust the air in the furnace before heating up the furnace,the nitrogen volume for exhausting air should be at least twice than normal operation .After several minutes's exhausting ,please continue heating to exhaust air, after two hours ,constant pressure nitriding for several hours,after completion of the nitriding process ,denitrogen for 1 to 2 hours , when the temperature has dropped below 150 ℃ ,then nitrogen supply can be stopped and the workpiece can be drawn out of the furnace.

Pit nitriding furnace mainly provides necessary protection atmosphere for heat treatment process that needs nitrogen to prevent the oxidation of the surface.

Applied to nitrogen protection heat treatment of all kinds of main shaft, crankshaft, disc-shaped artifacts.Application industries include: core parts of heat treatment for automotive, mechanical processing, high-speed bullet trains, nuclear power, shipbuilding, and others.