Supply Hangzhou plasma nitriding process

1, ion nitriding is carried out in a vacuum, so that the machined surface can be obtained without oxidation, it will not damage the surface finish of the workpiece to be treated. And because it is processed (380 ℃ since then nitriding treatment) at a low temperature, the amount of deformation of the workpiece to be treated is very small, good dimensional stability, precision molds and precision to meet the parts requirements, no longer after treatment for processing, the finished product very suitable for processing. 2, gas nitriding surface roughness long, hard and brittle not wear. Gas nitriding workpiece surface usually appear thick (20um or more) compound layer, which is a heterogeneous mixture layer composed of ε + γ 'two-phase composition, the inner layer was diffusion layer. Thus, a compound layer in the three-microscopic stress, if the stress in this direction and then slightly force, it will have small cracks, the crack gradually expand and make the entire compound layer peeling. Chromium-containing compound layer aluminum nitriding steel is very brittle, after gas nitriding generally take it rubbed off prior to use. The plasma nitriding atmosphere by controlling the ratio of nitrogen and hydrogen, can be obtained 5-30um thick brittle smaller ε-phase single-phase layer 0-8um thick toughness γ or 'phase single-phase layer, the toughness can be obtained more no compound layer excellent and only diffusion layer nitrided layer, so you can not use grinding directly installed. 3, due to obstruction of the stainless steel surface passivation film, before conventional gas nitriding treatment must be done to blunt, due process is very complicated and difficult to control, the effect is difficult to guarantee. Sputter ion nitriding action effectively removes this layer passivation film, without having to do to blunt treatment, ion nitriding process and therefore the surface hardening of stainless steel provides a new way. 4, the plasma nitriding workpiece nitride layer dense, high hardness, wear resistance, seizure resistance and corrosion resistance were better than gas nitriding.