近十年来,主要是在日本和欧洲的新轧辊钢厂,为了生产大口径钢管和造船,轧出了愈来愈宽、精度较高、性能优良的钢板。这就要有较大的和相应粗的支承辊和工作辊,以便必要地扩大轧机牌坊间距并提高轧辊轧制压力和刚性。支承辊的制造,很早以前就采用大型钢锭锻制法,至今日本仍然采用这种方法。自1950年以来,钢复合铸造法的研制,在与锻 In the past decade, new roll mills, mainly in Japan and Europe, rolled out wider and higher precision steel plates with superior performance in order to produce large diameter pipes and shipbuilding. This necessitates larger and correspondingly thick back-up and work rolls in order to increase the mill-mill spacing and increase the rolling pressure and rigidity of the roll. Support roller manufacturing, a long time ago, the use of large ingot forging method, so far in Japan still use this method. Since 1950, the development of steel compound casting method, with and forging