目前,我国不少工厂在进行离子渗氮处理时多采用氨气作气源。据文献[1]介绍,气源中含水分太多时,氮化层硬度和深度明显下降。因而提出在进氨系统中应该设有氨干燥过滤装置。试验表明,将过滤后的氨气再加热分 At present, many factories in our country when using ion nitriding treatment of ammonia as the gas source. According to the literature [1] introduction, too much moisture in the gas source, the nitride layer hardness and depth decreased significantly. It is proposed in the ammonia system should be equipped with ammonia drying filter device. Test shows that the ammonia after filtration and heating points