不銹鋼封頭的熱沖壓成型工藝過程說明
在封(feng)頭(tou)沖(chong)壓(ya)(ya)成(cheng)型(xing)時,為了降(jiang)低坯料與模(mo)具間的摩擦力,沖(chong)壓(ya)(ya)成(cheng)型(xing)時大都(dou)在下模(mo)的表面涂以潤滑劑(ji)。不銹(xiu)鋼(gang)封(feng)頭(tou)沖(chong)壓(ya)(ya)成(cheng)型(xing),一(yi)般(ban)使用的潤滑劑(ji)為55%石(shi)墨+45%機油(you)。封(feng)頭(tou)沖(chong)壓(ya)(ya)設備(bei)及成(cheng)型(xing)過程見圖4-30. 壓(ya)(ya)力機噸位的選擇:毛坯厚度8=30~40mm,壓(ya)(ya)力機噸位應≤400噸,毛...