不銹鋼封頭的熱沖壓成型工藝過程說明
在封頭(tou)(tou)沖(chong)壓(ya)(ya)(ya)(ya)成(cheng)型(xing)(xing)時,為(wei)(wei)了降低坯料與(yu)模具間(jian)的摩擦(ca)力(li),沖(chong)壓(ya)(ya)(ya)(ya)成(cheng)型(xing)(xing)時大都(dou)在下模的表面(mian)涂(tu)以潤滑劑。不銹鋼封頭(tou)(tou)沖(chong)壓(ya)(ya)(ya)(ya)成(cheng)型(xing)(xing),一(yi)般(ban)使用的潤滑劑為(wei)(wei)55%石墨(mo)+45%機(ji)油。封頭(tou)(tou)沖(chong)壓(ya)(ya)(ya)(ya)設備及成(cheng)型(xing)(xing)過程見圖4-30. 壓(ya)(ya)(ya)(ya)力(li)機(ji)噸位(wei)的選(xuan)擇:毛(mao)(mao)坯厚度8=30~40mm,壓(ya)(ya)(ya)(ya)力(li)機(ji)噸位(wei)應≤400噸,毛(mao)(mao)...