Powder metallurgy green processing can solve the problem of tool wear during processing of powder metallurgy sintered parts, and can obtain better machined surface quality and good mechanical properties after sintering. It is the future development direction of powder metallurgy parts processing.

Powder metallurgy The main problem facing green processing is how to improve the green strength and achieve high processing of the surface quality. Compared to the addition of lubricants to improve the green strength, the use of a wide range of temperature and pressure process. However, due to the temperature and pressure process will change the compact after the demoulding of the elastic effect, after the green processing of the parts in the same after the corresponding size changes, at this time for the size of the high precision parts need to go through after sintering Plastic surgery to meet the requirements, which in the green processing process must be considered. Therefore, it is a new development trend to study the processing performance of powder metallurgy parts from the point of view of whole process by making the green compacting, processing and sintering as a whole to carry out the whole process of co-manufacturing. Practice has proved that when the production of small quantities of products, high-speed suppression can achieve green strength requirements, but with the suppression of the mold will soon be fatigue damage, which is fatal to the actual production. To this end, how to improve the impact resistance of mold and anti-fatigue performance is to further promote the high-speed pressing technology is facing important problems. In addition, revealing the removal of green processing materials and the machined surface formation mechanism is the basis and prerequisite for obtaining high machined surface quality.