切(qie)(qie)(qie)分(fen)軋制(zhi)(zhi)是采(cai)用特(te)殊的(de)孔(kong)型和導衛系統，利(li)用金(jin)屬(shu)的(de)不均勻變形(xing)將軋件沿(yan)縱向切(qie)(qie)(qie)分(fen)成兩(liang)根或兩(liang)根以上(shang)獨立分(fen)支(zhi)的(de)新工藝。該工藝具有節能降耗(hao)，大(da)幅(fu)度提高生產效率等優點，受到廣泛(fan)關注。然而由于切(qie)(qie)(qie)分(fen)軋制(zhi)(zhi)工藝的(de)復雜性，四切(qie)(qie)(qie)分(fen)導衛價格，對(dui)切(qie)(qie)(qie)分(fen)軋制(zhi)(zhi)理(li)(li)論及切(qie)(qie)(qie)分(fen)設備(bei)的(de)研究卻遠遠滯后于工業(ye)應用，因此對(dui)切(qie)(qie)(qie)分(fen)軋制(zhi)(zhi)理(li)(li)論進(jin)行深(shen)入研究，合理(li)(li)設計(ji)切(qie)(qie)(qie)分(fen)設備(bei)，是促(cu)進(jin)切(qie)(qie)(qie)分(fen)軋制(zhi)(zhi)技術(shu)深(shen)入發展(zhan)的(de)必要手段。

粗中軋機(ji)  領(ling)用(yong)導(dao)(dao)衛(wei)時(shi)需(xu)確認導(dao)(dao)輥(gun)、滾動(dong)導(dao)(dao)板(ban)(ban)、滑動(dong)導(dao)(dao)衛(wei)等接觸(chu)面光潔平(ping)滑、沒有毛刺、無麻坑 ，滾動(dong)導(dao)(dao)衛(wei)各(ge)部件如導(dao)(dao)輥(gun)、導(dao)(dao)輥(gun)軸、軸承(cheng)、導(dao)(dao)板(ban)(ban)等具有不同的使(shi)(shi)用(yong)壽(shou)命，其(qi)中軸承(cheng)使(shi)(shi)用(yong)壽(shou)命較短，一(yi)般在軸承(cheng)檢(jian)(jian)驗(yan)更換(huan)(huan)時(shi)，四切(qie)分(fen)導(dao)(dao)衛(wei)是什么，其(qi)他部件也要作相應(ying)(ying)的檢(jian)(jian)驗(yan)與更換(huan)(huan)，各(ge)部件一(yi)旦(dan)發現情況不好，四切(qie)分(fen)導(dao)(dao)衛(wei)性能(neng)，應(ying)(ying)立即更換(huan)(huan)，能(neng)修(xiu)復(fu)的應(ying)(ying)修(xiu)復(fu)  ，滑動(dong)導(dao)(dao)衛(wei)件、滾動(dong)導(dao)(dao)板(ban)(ban)表面磨(mo)損輕微(2mm)應(ying)(ying)清理創面繼(ji)續使(shi)(shi)用(yong)，中等磨(mo)損（2～5 mm）應(ying)(ying)經(jing)過修(xiu)復(fu)后使(shi)(shi)用(yong)，磨(mo)損嚴重(zhong)的應(ying)(ying)報廢處理， 粗中軋滾動(dong)導(dao)(dao)衛(wei)導(dao)(dao)輥(gun)開口(kou)(kou)度用(yong)卡鉗(qian)測(ce)量，導(dao)(dao)輥(gun)的間歇應(ying)(ying)與來料尺(chi)(chi)寸(cun)相符，軋件能(neng)在導(dao)(dao)輥(gun)間順(shun)利通過，不松不緊，滾動(dong)導(dao)(dao)衛(wei)入口(kou)(kou)夾(jia)板(ban)(ban)的寬度應(ying)(ying)比來料尺(chi)(chi)寸(cun)稍大(da)。推(tui)薦尺(chi)(chi)寸(cun)為：粗中軋夾(jia)板(ban)(ban)開口(kou)(kou)寬度比來料尺(chi)(chi)寸(cun)大(da)10mm

四(si)切(qie)(qie)分(fen)軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)，即在軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)過(guo)程中(zhong)通過(guo)孔型，將(jiang)1根軋(ya)(ya)(ya)(ya)(ya)件(jian)軋(ya)(ya)(ya)(ya)(ya)成具有(you)4個相同形(xing)狀的(de)并聯軋(ya)(ya)(ya)(ya)(ya)件(jian)，再通過(guo)切(qie)(qie)分(fen)導(dao)衛(wei)(wei)及(ji)孔型將(jiang)并聯軋(ya)(ya)(ya)(ya)(ya)件(jian)沿(yan)縱向切(qie)(qie)分(fen)成4個單根軋(ya)(ya)(ya)(ya)(ya)件(jian)。四(si)切(qie)(qie)分(fen)軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)技術(shu)可(ke)使產(chan)量提高2倍以上，10、~12mm規(gui)格(ge)采用四(si)切(qie)(qie)分(fen)軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)技術(shu)進行軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)，設(she)計產(chan)量可(ke)達lOOt/h。四(si)切(qie)(qie)分(fen)軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)工(gong)藝(yi)(yi)是(shi)一(yi)項要(yao)(yao)求(qiu)很嚴(yan)格(ge)的(de)生產(chan)工(gong)藝(yi)(yi)，從(cong)對(dui)鋼坯(pi)質量、加熱(re)溫(wen)度(du)到軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)料形(xing)、軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)速度(du)及(ji)導(dao)衛(wei)(wei)調(diao)整都要(yao)(yao)求(qiu)很高，特別(bie)是(shi)軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)部分(fen)，不僅對(dui)導(dao)衛(wei)(wei)質量、軋(ya)(ya)(ya)(ya)(ya)輥材(cai)質、孔型和料形(xing)尺寸要(yao)(yao)求(qiu)嚴(yan)格(ge)，而且對(dui)工(gong)人操(cao)作水平(ping)要(yao)(yao)求(qiu)很高，因為任何一(yi)些微(wei)小的(de)變化(hua)若不及(ji)時(shi)調(diao)整，鶴崗四(si)切(qie)(qie)分(fen)導(dao)衛(wei)(wei)，都會影(ying)響成品(pin)(pin)尺寸。廣(guang)鋼連軋(ya)(ya)(ya)(ya)(ya)廠四(si)切(qie)(qie)分(fen)軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)(zhi)工(gong)藝(yi)(yi)，是(shi)將(jiang)15機(ji)架作為預切(qie)(qie)分(fen)孔，軋(ya)(ya)(ya)(ya)(ya)件(jian)出16 機(ji)架時(shi)1分(fen)為4，經17、18 機(ji)架軋(ya)(ya)(ya)(ya)(ya)成成品(pin)(pin)。