鋁單板軋輥的粗糙度

    鋁單板軋輥輥面粗糙度值的選擇和均勻性的控制直接關系到鋁單板產品的(de)表面(mian)(mian)質量。對(dui)于(yu)熱(re)軋而(er)言，輥(gun)(gun)面(mian)(mian)粗糙(cao)度的(de)選擇(ze)既要(yao)有利于(yu)咬入(ru)，防止鋁(lv)單板軋制過程中打滑，也要(yao)防止因輥(gun)(gun)面(mian)(mian)粗糙(cao)而(er)影響鋁(lv)單板產品表面(mian)(mian)質量。因此，熱(re)軋機工(gong)(gong)作輥(gun)(gun)粗糙(cao)度R.為1.25 ~ 1. 75μm,支撐輥(gun)(gun)粗糙(cao)度R.為1.5 ~2.0μm.為了避(bi)免因輥(gun)(gun)面(mian)(mian)粗糙(cao)度不均(jun)勻(yun)造(zao)成帶(dai)材表面(mian)(mian)色(se)差，工(gong)(gong)作輥(gun)(gun)輥(gun)(gun)面(mian)(mian)粗糙(cao)度分(fen)布的(de)均(jun)勻(yun)性(xing)應控制在+0. 2μm內。

    鋁(lv)單(dan)板(ban)軋輥(gun)的硬度

    熱軋(ya)(ya)(ya)輥(gun)大都采用(yong)鍛鋼軋(ya)(ya)(ya)輥(gun)。鋁(lv)單(dan)(dan)板軋(ya)(ya)(ya)輥(gun)硬度直接影(ying)響到鋁(lv)單(dan)(dan)板產(chan)品的(de)(de)表(biao)面(mian)(mian)質量(liang)和(he)軋(ya)(ya)(ya)輥(gun)的(de)(de)使用(yong)壽(shou)命(ming)(ming)。鋁(lv)單(dan)(dan)板輥(gun)面(mian)(mian)硬度低(di)，鋁(lv)單(dan)(dan)板軋(ya)(ya)(ya)制時易產(chan)生壓(ya)坑，導(dao)致(zhi)鋁(lv)單(dan)(dan)板帶材表(biao)面(mian)(mian)出(chu)現(xian)軋(ya)(ya)(ya)輥(gun)印(yin)痕(hen)，而且降低(di)軋(ya)(ya)(ya)輥(gun)的(de)(de)耐磨性(xing)與使用(yong)壽(shou)命(ming)(ming)；輥(gun)面(mian)(mian)硬度過(guo)高(gao)(gao)，鋁(lv)單(dan)(dan)板軋(ya)(ya)(ya)輥(gun)韌性(xing)下降而變脆，熱軋(ya)(ya)(ya)過(guo)程易龜裂或剝落。因此，選擇適宜的(de)(de)軋(ya)(ya)(ya)輥(gun)硬度是有益的(de)(de)。對(dui)于四輥(gun)軋(ya)(ya)(ya)機，為(wei)(wei)提高(gao)(gao)工(gong)(gong)(gong)作輥(gun)的(de)(de)使用(yong)壽(shou)命(ming)(ming)，支撐(cheng)輥(gun)的(de)(de)硬度比工(gong)(gong)(gong)作輥(gun)的(de)(de)低(di)，熱軋(ya)(ya)(ya)機軋(ya)(ya)(ya)輥(gun)輥(gun)面(mian)(mian)硬度（HS）： 支撐(cheng)輥(gun)為(wei)(wei)50 +5;工(gong)(gong)(gong)作輥(gun)為(wei)(wei)70 +5。