有关烧结部件表面问题的几个案例-粉末冶金商务网.PDF

22 2 #$% Vol 122 , No 12 2004 4 Powder Metallurgy Technology Apr 12004 3 ( gans AB , 263 54 Hgans , ) H : , PM ,, : :;; ; 询 A fe w cases of surface problems of sintered components Yu Yang ( Hgans AB , 263 54 Hgans ,Sweden) 咨 Abstract : Among others , surface defects such as pinholes , holes and stains appear during the production of PM com2 ponents , especially after sintering1 The present paper summarises factors which may influence the surface quality of the sintered components , with the consideration of the practical PM production process1 A few cases were analysed in relation to different kind of surface problems and their possible solutions1 Key words : Sintered steel ; Surface defects ; agglomerate ; impurity particles 特 1  , ( ,, , ) 信 ( ) ( 2   ) , , , : 州 ( ) , , 2 11  , , , PM ,Al Mn Si Ca S C P O , 扬 , 2 12