Seal method for welded part of electric welded tube

  • Inventors:
  • Assignees: Sumitomo Metal Ind Ltd
  • Publication Date: October 08, 1981
  • Publication Number: JP-S56128686-A

Abstract

PURPOSE: To improve the seal function in the wire box to hold a stable low oxygen concentration, by sliding the wire brush between inside and outside circumferential faces of the seal box, the open pipe, and the tube. CONSTITUTION: Inlet-side outside wire brush 21 is provided on the inside circumferential face of constricted parts 11 and 12 of open pipe OP and is slided on the outside circumference of open pipe OP. Outlet-side outside wire brush 22 is provided and is slided on the outside face of molded tube P. Inlet-side inside wire brush 31 corresponding to inlet-side outside wire brush 21 is provided and is slided on the inside circumferential face of open pipe OP, and outlet-side inside wire brush 32 corresponding to outlet-side outside wire brush 22 is provided and is slided on the inside face of tube P. As a result, brushes follow the surface of the tube surely to prevent invasion of air into seal box 1 and flowing-out of seal gas from seal box 1. COPYRIGHT: (C)1981,JPO&Japio

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    JP-H0248350-B2October 24, 1990Toyo Rajeetaa Kk, Meidensha Kk
    JP-S6478681-AMarch 24, 1989Toyo Radiator Co Ltd, Meidensha Electric Mfg Co LtdProduction of metal tube