Porous Sintered Titanium Filter Tube

Key factors for sintering: (1) Sintering temperature and time The sintering temperature and time affect the porosity, density, strength and hardness of the sintered body. If the sintering temperature is too high and the time is too long, the performance of the product will be reduced, and even over-burning defects of the product will occur; if the sintering temperature is too low or the sintering time is too short, the performance of the product will be degraded due to under-burning. (2) Sintering atmosre The sintering atmosres commonly used in powder metallurgy include reducing atmosre, vacuum, hydrogen atmosre, etc. The sintering atmosre also directly affects the properties of the sintered body. Sintering in a reducing atmosre prevents burnout of the compact and reduces surface oxides. For example, iron-based and copper-based products often use producer gas or decomposed ammonia, and cemented carbide and stainless steel often use pure hydrogen. Vacuum sintering can be used for active metals or refractory metals (such as beryllium, titanium, zirconium, tantalum), hard alloys containing TiC and stainless steel. Vacuum sintering can avoid the adverse effects of harmful components (H2O, O2, H2) in the atmosre, and can also reduce the sintering temperature (generally reduce100-150°C).