基本信息:
- 专利标题： 遠心鋳造製複合圧延ロール及びその製造方法
- 专利标题（英）：Composite rolling roll and a method of manufacturing the steel centrifugal casting
- 专利标题（中）：复合轧制辊及其制造方法，由其制成的离心铸造
- 申请号：JP2013533790 申请日：2012-11-21
- 公开(公告)号：JPWO2013077377A1 公开(公告)日：2015-04-27
- 发明人： 小田 望 , 望 小田 , 尭之 瀬川 , 尭之 瀬川 , 泰則 野崎 , 泰則 野崎
- 申请人： 日立金属株式会社
- 申请人地址： 東京都港区芝浦一丁目2番1号
- 专利权人： 日立金属株式会社
- 当前专利权人： 日立金属株式会社
- 当前专利权人地址： 東京都港区芝浦一丁目2番1号
- 代理人： 高石 橘馬
- 优先权： JP2011253588 2011-11-21
- 主分类号： C22C37/00
- IPC分类号： C22C37/00 ; B21B27/00 ; B22D13/02
C by mass: 2.7~3.5%, Si: 1.5~2.5%, Mn: 0.4~1.0%, Ni: 3.7~5.1%, Cr: 0.8~2.2%, Mo: 1.5~4.5%, V: 2.0~4.5 %, and Nb: containing 0.5 to 2.0%, the balance being Fe and unavoidable impurities, the mass ratio of Nb / V is from 0.18 to 0.65, and a chemical composition by weight ratio of Mo / V is 0.7 to 2.5 , the outer layer of cast iron having a tissue having 15-45% of the cementite phase and 1-10% of the graphite phase in area basis, an inner layer made of a good cast iron mechanical strength is by metal bonding, surface centrifugal casting made of composite rolling rolls speckled segregation with a diameter of more than 1.5 mm of the dendrite of bainite and / or martensite in the pot in the region of the depth of 10 mm or more of the outer layer is substantially absent from.