长期以来,在线材精轧机上一直使用整体硬质合金辊环和镶套在钢辊轴体上的硬质合金辊环。70年代初以来,线材轧机的中轧机、精轧机以及棒材精轧机上采用了复合轧辊,即镶嵌硬质合金辊环的普通轧辊,硬质合金辊环已使用25年,实践证明,硬质合金 For a long time, solid carbide rings and carbide rings mounted on steel roll shafts have been used on wire rod finishing mills. Since the early 1970s, wire rod mill intermediate mill, finishing mill and bar finishing mill with a composite roll, carbide roller ring mounted common roll, carbide roll rings have been used for 25 years, the practice has proved that the hard alloy