The fastest growing, most widely used industrial plasma heat treatment method is the plasma chemical heat treatment. Compared with conventional chemical heat treatment, plasma chemical heat treatment with high quality, high efficiency, low consumption, clean, pollution-free and so on. However, this technology is used for large quantities of small molds and other small parts (such as bolts, nuts, chains, etc.), the furnace trouble, infiltration layer quality is not easy to control. Moreover, the same furnace mixed with different shapes, sizes of the workpiece, it is not easy to even control the workpiece temperature.
Ion carburizing, also known as glow carburizing. Carburizing is a kind of heat treatment which is inexpensive, good formability and ductility of low carbon steel or low carbon alloy steel matrix material which is heated in the carbon-based atmosphere to make the activated carbon penetrate the base material and form a tough, method. Ionic carburization is that the activated carbon is obtained from the hydrocarbon gas in the vacuum plasma region by DC glow discharge ionization, and its principle is similar to that of ion nitriding.
Ion nitriding is currently the most widely used industrial, the most mature ion heat treatment process. The process is easy to adjust the process parameters (such as voltage, current, furnace gas pressure, temperature, time and working gas composition, etc.) to obtain pure diffusion layer, single phase, compound layer. The key to the technology of ion nitriding is how to choose the optimum parameters according to its characteristics, combined with the relevant mold service conditions, and then obtain the best infiltration layer.
The same time as
Ion - carbon - nitriding
Ionized carburizing technology is to rely on the furnace gas active components C3H8 and NH3 in the steel surface decomposition, precipitation of active atoms C and N is the surface absorption and diffusion into the matrix to achieve, it is also known as ion nitriding, Bath and gas soft nitriding from the development. The method of ionizing carburized nitrogen is basically the same as that of ion nitriding, but the working gas composition is different. The cooling method can be quenched by oil quenching or high pressure gas quenching under vacuum condition. Ion carbon nitriding time is short, high efficiency, can get thicker compound layer, with excellent wear resistance, anti-glue and anti-fatigue properties. Compared with the traditional process, used in Yu Zhuo precision ion-carbon nitriding technology not only has a good quality layer, easy to control the composition of the advantages, but also efficient, clean, energy saving. The process has a strong market competitiveness.
Boronizing is a very effective surface hardening process. After boronizing of metal parts, the hardness of boride and boron carbide is very high. Therefore, in the mold surface strengthening, boronizing plays an important role. There are many methods of boronizing, conventional methods are gas, liquid, solid and electrolytic boron. Ion boron permeability layer is evenly, fast penetration, infiltration of the workpiece without cleaning, etc., is very promising process.
Ion osmosis metal
Mold surface infiltration of metal refers to a certain temperature and vacuum conditions, the reduction of active metal atoms or ionization, sputtering out of the metal atoms into the surface of the mold steel matrix alloy layer, thereby changing the surface chemical composition, organization and performance Methods. Mold surface infiltration metal technology belongs to the field of chemical heat treatment of steel, in essence, through the high temperature diffusion, so that chromium, vanadium, titanium, tungsten, molybdenum, niobium, cobalt, nickel, aluminum and other active atoms in the mold surface to form solid solution or carbide layer Organization, its high hardness, good wear resistance, and has good resistance to oxidation and corrosion resistance, greatly improving the mold surface performance and service life.