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其特點是改善工件的內在質量,而這一般不是肉眼所能看到的,為使金屬工件具有所需要的力學性能、物理性能和化學性能,除合理選用材料和各種成形工藝外,熱處理工藝往往是必不可少的。
鋼(gang)鐵(tie)是(shi)機(ji)械(xie)工(gong)業(ye)中(zhong)應(ying)用(yong)最(zui)廣(guang)的(de)材(cai)料(liao),鋼(gang)鐵(tie)顯(xian)微(wei)組(zu)織(zhi)複(fu)雜(za),可(ke)以(yi)通(tong)過(guo)熱(re)處(chu)理(li)予(yu)以(yi)控(kong)製(zhi),所(suo)以(yi)鋼(gang)鐵(tie)的(de)熱(re)處(chu)理(li)是(shi)金(jin)屬(shu)熱(re)處(chu)理(li)的(de)主(zhu)要(yao)內(nei)容(rong)。另(ling)外(wai),鋁(lv)、銅、鎂、鈦等及其合金也都可以通過熱處理改變其力學、物理和化學性能,以獲得不同的使用性能。
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