沖(chong)(chong)壓(ya)成(cheng)(cheng)型(xing)是(shi)指靠(kao)壓(ya)力(li)機和模(mo)具對板材、帶(dai)材、管材和型(xing)材等(deng)施(shi)加(jia)外力(li)，使之產生塑(su)性(xing)變(bian)形或分離，從而(er)獲(huo)得所需形狀和尺寸的工(gong)件（沖(chong)(chong)壓(ya)件）的加(jia)工(gong)成(cheng)(cheng)型(xing)方(fang)法。沖(chong)(chong)壓(ya)的坯料(liao)主要是(shi)熱軋和冷(leng)軋的鋼板和鋼帶(dai)。鋼材中，有(you)60~70%是(shi)板材，其中大部分經過沖(chong)(chong)壓(ya)制(zhi)成(cheng)(cheng)成(cheng)(cheng)品。汽車(che)的車(che)身、底盤、油箱、散(san)熱器片(pian)，鍋爐的汽包，容器的殼體(ti)，電機、電器的鐵芯硅(gui)鋼片(pian)等(deng)都是(shi)沖(chong)(chong)壓(ya)加(jia)工(gong)的。儀(yi)器儀(yi)表、家用電器、自行車(che)、辦公機械、生活(huo)器等(deng)產品中，也有(you)大量沖(chong)(chong)壓(ya)件