First, the use of vacuum gas nitriding furnace
Nitriding, nitrocarburizing and steam treatment of high-speed steels for all kinds of workpieces are especially suitable for stainless steel piston rings with nitriding of slits, deep holes and blind hole molds.
Second, vacuum gas nitriding furnace features
Rapid infiltration: Under vacuum, the pulsed nitrogen potential significantly accelerates the binding of the active nitrogen atom [N] to the Fe atom and accelerates the anti-scatter of the active nitrogen atom to achieve rapid infiltration
Nitrogen purposes. For H13 mold, the nitrogen pulse after vacuum pulse eight hours, seepage layer up: 0.15mm above.
Brittle low: vacuum pulse nitriding process, throughout the nitriding process, nitrogen potential was pulsed changes, can effectively inhibit the emergence of the brittle layer of vein tissue, the surface of a brittleness up to effectively prevent the workpiece by
Nitriding after the workpiece surface during service cracking and peeling phenomenon.
High surface hardness: After the workpiece by pulsed nitriding, the surface hardness is mainly determined by the composition of the nitride layer and the total depth of the nitride and anti-scattering layer, but also with the close concentration of nitrogen atoms on the surface
Related, vacuum pulse nitriding can effectively improve the concentration of nitrogen atoms on the surface of the workpiece, it can improve the surface hardness of the workpiece, after eight hours of vacuum nitriding, Vickers hardness of H13 mold surface: HV950-1100
Installed a large amount of furnace: In a vacuum state, the method of installing nitriding furnace can be packed closely, which can effectively utilize the furnace space and obviously increase the furnace loading capacity
Process operation is strong: During the implementation of vacuum pulse nitriding process, the nitrogen potential in the furnace changes in a pulsed manner. The process is easier to implement than the conventional positive pressure nitriding furnace without the need to measure the change of nitrogen potential in the furnace atmosphere.
Low cost of production: Vacuum pulse nitriding process than the conventional nitriding process shorten the time by 50%, the unit installed capacity larger, it can significantly reduce production costs.