HOW TO IMPROVE QUALITY OF P/M PARTS IN OUR COUNTRY

The mechanical properties of materials and the dimentional accuracy of parts and the stability of both can symbolize the quality of iron-based P/M parts. The stability of physical and chemicalproperties of raw material powder and premixed powder is of great importance for ensuring the qualityof parts. It is a relatively appropriate way at present to improve the strength and toughness of sinteredsteel by adopting copper impregnating technology. The reasonal sintering furnace section,sintering atmosphere and strictly nor malized routine of sintering process are the key to guarantee the quality ofparts. Meanwhile,attention should also be paid to improve the appearace of sintered ports. The paperoutlines some views on how to improve the quality of P/M products in our country.