发明公开
EP1584382A1 Method for manufacturing a metal tubular blank, a tubular blank, and a product produced from said tubular blank 有权
Verfahren zur Innenhochdruckumformung einesrohrförmigenRohlings aus Stahl

  • 专利标题: Method for manufacturing a metal tubular blank, a tubular blank, and a product produced from said tubular blank
  • 专利标题(中): Verfahren zur Innenhochdruckumformung einesrohrförmigenRohlings aus Stahl
  • 申请号: EP05075830.9
    申请日: 2005-04-08
  • 公开(公告)号: EP1584382A1
    公开(公告)日: 2005-10-12
  • 发明人: Kelder, Maarten HendrikKlaassen, Maria Gemma Othilde
  • 申请人: Corus Staal BV
  • 申请人地址: P.O. Box 10000 1970 CA Ijmuiden NL
  • 专利权人: Corus Staal BV
  • 当前专利权人: Corus Staal BV
  • 当前专利权人地址: P.O. Box 10000 1970 CA Ijmuiden NL
  • 代理机构: Kruit, Jan
  • 优先权: EP04076086 20040409
  • 主分类号: B21C37/06
  • IPC分类号: B21C37/06 B21D26/02
Method for manufacturing a metal tubular blank, a tubular blank, and a product produced from said tubular blank
摘要:
This invention relates to a method for manufacturing a metal tubular blank suitable for forming into a product comprising the steps of

providing an essentially planar blank, said planar blank having a first surface and a second surface;
producing the tubular blank from the planar blank whereby the second surface of the planar blank becomes the outside of the tubular blank;
wherein a first layer with a first friction influencing function is applied to at least part of the first side of the planar blank and/or a second layer with a second friction influencing function is applied to at least part of the second side of the planar blank prior to forming the planar blank into a tubular blank, so as to influence the friction between the tubular blank and forming tools which can be used to form the tubular blank into the product, and wherein the first and/or second layer are applied in the form of a foil, a dry lubricant, a wax or an oil. The invention further relates to a tubular blank and a product produced from such a tubular blank.
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