发明申请
- 专利标题: Centrifugally Cast External Layer for Rolling Roll and Method for Manufacture Thereof
- 专利标题(中): 离心铸造外滚涂层及其制造方法
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申请号: US11575127申请日: 2002-09-13
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公开(公告)号: US20080226936A1公开(公告)日: 2008-09-18
- 发明人: Kiyoshi Furushima , Shunji Matsumoto , Ryota Honda , Kiyoshi Hayashi , Takashi Honda , Masatsugu Uchida
- 申请人: Kiyoshi Furushima , Shunji Matsumoto , Ryota Honda , Kiyoshi Hayashi , Takashi Honda , Masatsugu Uchida
- 申请人地址: JP Tokyo
- 专利权人: Hitachi Metals, Ltd.
- 当前专利权人: Hitachi Metals, Ltd.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2004-265628 20040913; JP2005-117008 20050414
- 国际申请: PCT/JP05/16859 WO 20020913
- 主分类号: B32B15/00
- IPC分类号: B32B15/00 ; B32B15/18 ; B22D13/02
摘要:
A method for producing an outer layer for a roll having a structure having MC carbide dispersed at an area ratio of 20-60%, comprising the steps of (1) centrifugally casting a melt having a composition comprising, by mass, 2.2-6.0% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 8-22% of V, the balance being Fe and inevitable impurity elements, to produce a cylindrical body comprising an inner layer having concentration MC carbide, an MC-carbide-poor outer layer, and a concentration gradient layer between the inner layer and the outer layer, in which the area ratio of MC carbide changes, and (2) cutting the cylindrical body to a depth at which the area ratio of MC carbide is 20% or more.
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