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鋼材(cai)(cai)(cai)應(ying)用(yong)廣(guang)泛、品(pin)(pin)種繁多,根據斷(duan)面(mian)形(xing)狀(zhuang)的不(bu)同,鋼材(cai)(cai)(cai)一(yi)般分(fen)為型(xing)材(cai)(cai)(cai)、板材(cai)(cai)(cai)、管材(cai)(cai)(cai)和(he)金屬制品(pin)(pin)四大類。鋼材(cai)(cai)(cai)是鋼錠、鋼坯或鋼材(cai)(cai)(cai)通過壓力加(jia)(jia)工(gong)(gong)制成的一(yi)定形(xing)狀(zhuang)、尺寸和(he)性能的材(cai)(cai)(cai)料。大部(bu)分(fen)鋼材(cai)(cai)(cai)加(jia)(jia)工(gong)(gong)都是通過壓力加(jia)(jia)工(gong)(gong),使(shi)被(bei)加(jia)(jia)工(gong)(gong)的鋼(坯、錠等)產生塑(su)性變形(xing)。根據鋼材(cai)(cai)(cai)加(jia)(jia)工(gong)(gong)溫度不(bu)同,可(ke)以分(fen)為冷加(jia)(jia)工(gong)(gong)和(he)熱加(jia)(jia)工(gong)(gong)兩(liang)種。