在軋鋼車間里用得zui多的鋸切機械是熱鋸機，熱鋸機一般裝設在軋機后面的生產線上，在很多情況下，整個軋鋼車間的生產量常因熱鋸機生產能力的限制而受到影響。那什么是熱鋸機？熱鋸機的主要機構有三部分：鋸片傳動機構、鋸片送進機構和調整尺寸的鋸機橫移機。

       鋸(ju)(ju)(ju)片(pian)的(de)傳(chuan)動(dong)(dong)(dong)(dong)方(fang)式(shi)(shi)(shi)(shi)有2種(zhong)：由電動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)直(zhi)接傳(chuan)動(dong)(dong)(dong)(dong)及電動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)經三角皮帶或其(qi)他方(fang)式(shi)(shi)(shi)(shi)傳(chuan)動(dong)(dong)(dong)(dong)，前者因其(qi)傳(chuan)動(dong)(dong)(dong)(dong)效率高，空載能(neng)耗少，大型(xing)熱鋸(ju)(ju)(ju)機(ji)(ji)(ji)(ji)都采用這(zhe)種(zhong)方(fang)式(shi)(shi)(shi)(shi)。但(dan)是，為了防止電動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)工(gong)作時受熱態(tai)軋(ya)(ya)件(jian)的(de)熱輻射影響，所以必須采取防護措施；第二種(zhong)傳(chuan)動(dong)(dong)(dong)(dong)方(fang)式(shi)(shi)(shi)(shi)的(de)電動(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)離(li)熱軋(ya)(ya)件(jian)較遠(yuan)，受熱態(tai)軋(ya)(ya)件(jian)的(de)熱輻射影響較小，所以不用采取專(zhuan)門的(de)防護措施。早起的(de)熱鋸(ju)(ju)(ju)機(ji)(ji)(ji)(ji)是固(gu)定式(shi)(shi)(shi)(shi)的(de)，既無橫移機(ji)(ji)(ji)(ji)構也無送進(jin)機(ji)(ji)(ji)(ji)構，鋸(ju)(ju)(ju)切(qie)時用氣動(dong)(dong)(dong)(dong)小車將(jiang)軋(ya)(ya)件(jian)送往鋸(ju)(ju)(ju)片(pian)。這(zhe)種(zhong)固(gu)定式(shi)(shi)(shi)(shi)熱鋸(ju)(ju)(ju)機(ji)(ji)(ji)(ji)的(de)主要(yao)優點是設(she)備簡單、重(zhong)量(liang)輕、生(sheng)產(chan)率也比(bi)較高。例如我國某(mou)中型(xing)軋(ya)(ya)鋼廠(chang)的(de)固(gu)定式(shi)(shi)(shi)(shi)鋸(ju)(ju)(ju)切(qie)機(ji)(ji)(ji)(ji)，其(qi)鋸(ju)(ju)(ju)片(pian)直(zhi)徑為1500毫米，產(chan)量(liang)達(da)40萬(wan)噸/年(nian)以上，而設(she)備總重(zhong)量(liang)只有5噸。但(dan)是，這(zhe)種(zhong)鋸(ju)(ju)(ju)切(qie)機(ji)(ji)(ji)(ji)由于用氣動(dong)(dong)(dong)(dong)小車送進(jin)軋(ya)(ya)件(jian)，在送進(jin)過程中常將(jiang)軋(ya)(ya)件(jian)推彎，從而使鋸(ju)(ju)(ju)切(qie)后的(de)切(qie)口斷面和軋(ya)(ya)件(jian)軸線不垂直(zhi)，影響產(chan)品質量(liang)。所以，固(gu)定式(shi)(shi)(shi)(shi)熱鋸(ju)(ju)(ju)機(ji)(ji)(ji)(ji)逐漸被移動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)熱鋸(ju)(ju)(ju)機(ji)(ji)(ji)(ji)取代。

      在軋(ya)(ya)鋼(gang)機配(pei)套設備上，鋸機根據不同軋(ya)(ya)機類型也分(fen)為很多種，其中熱鋸機在型鋼(gang)軋(ya)(ya)機上出(chu)現的比較多。