| With the rapid development of industrial technology, traditional metallurgy techniques hardness, purity and process requirements, has been unable to meet the demand of the people, a new generation of powder metallurgy technology, based on the metal powder or metal and non-metallic powder combined, suppress orfiring technique Preparation of the system, it is the phase combination of the metal powder is put in a special container, applying a certain pressure, the formation of parts having a desired shape and size of the green compacts, the model of the compacts for sintering withpowder metallurgy made of molding material utilization is very high. The rapid development of powder metallurgy technology, to promote the development of China''s industrial enterprises, it solves the problem of powder metallurgy products roasting of the special process requirements, higher precision the powder metallurgy roasting products, better ventilation, and is currently the most representative of the powder metallurgical products is oil bearing, lubricant filled with its porosity, oil-bearing in the non-operating state. Operation, the shaft rotation due to friction and heat, bush thermal expansion of the pore is reduced, so the lubricating oil overflow into the bearing gap. When the shaft stops turning, bearing cooling, pore recovery, lubricating oil being sucked back into the pores. It inherits many advantages of powder metallurgy products, porous characteristics and lubricants efficient affinity, to solve the many drawbacks of traditional processing methods. |
