1992 年 32 巻 11 号 p. 1202-1210
In response to severe quality requirements resulting from remarkable progress in rolling techniques, composite type high performance roll was developed. With the adoption of this method, tough core metal, fine structure and high alloy at shell metal can be obtained with ease. Rolls with shell metal of high speed tool steel used as finishing work roll for hot strip mill showed outstanding results in wear resistance, surface roughening resistance and toughness. Consequently, conditions restricted by rolls in steel rolling mills are markedly relieved, rolled products of high grade can be produced and productivity is improved.
