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CN101022902A 插塞、用该插塞扩展金属管的内径的方法、制造金属管的方法以及金属管 失效 - 权利终止

  • Patent Title: 插塞、用该插塞扩展金属管的内径的方法、制造金属管的方法以及金属管
  • Patent Title (English): Plug, method of expanding inside diameter of metal pipe or tube using such plug, method of manufacturing metal pipe or tube, and metal pipe or tube
  • Application No.: CN200580031783.9
    Application Date: 2005-09-15
  • Publication No.: CN101022902A
    Publication Date: 2007-08-22
  • Inventor: 奥井达也 , 黑田浩一 , 秋山雅义
  • Applicant: 住友金属工业株式会社
  • Applicant Address: 日本大阪
  • Assignee: 住友金属工业株式会社
  • Current Assignee: 日本制铁株式会社
  • Current Assignee Address: 日本大阪
  • Agency: 北京林达刘知识产权代理事务所
  • Agent 刘新宇; 张会华
  • Priority: 273836/2004 2004.09.21 JP
  • International Application: PCT/JP2005/017444 2005.09.15
  • International Announcement: WO2006/033376 EN 2006.03.30
  • Date entered country: 2007-03-21
  • Main IPC: B21D39/20
  • IPC: B21D39/20
插塞、用该插塞扩展金属管的内径的方法、制造金属管的方法以及金属管
Abstract:
一种插塞，用于扩展金属管的端部的内径。其横截面为圆形，包括锥形部和连接到该锥形部的尾端的平行部。该锥形部的直径从该锥形部的头端至该锥形部的该尾端逐渐增大，在该锥形部的该尾端直径为D1。从直径为D2＝D1×0.99的点到直径为D1的该尾端的轴向距离LR满足表达式22≤LR/((D1－D2)/2)≤115。直径为D2的表面上的锥角大于或等于在直径为D2的点之后的该锥形部尾部表面上的锥角。该平行部的直径为D1。
Abstract(English):

The plug is for expanding the inside diameter of the end portion of a metal pipe. Its cross section is a circle, and includes a taper portion and a parallel portion connected to the tail end of the taper portion. The diameter of the taper portion gradually increases from the head end of the taper portion to the tail end of the taper portion where the diameter is D1. The axial distance LR from the point where the diameter D2=D1x0.99 to the tail end where the diameter is D1 satisfies the Expression 22=LR/((D1-D2)/2)=115. The taper angle on the surface where the diameter is D2 is larger than or equal to the taper angle on the tail surface of the taper portion following the point where the diameter is D2. The diameter of the parallel portion is D1.

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