Title:
MATERIAL TO BE BUTT WELDED, CUTTING METHOD AND WELDING METHOD THEREFOR, AND WIRE
Document Type and Number:
WIPO Patent Application WO/1995/033592
Kind Code:
A1
Abstract:
The present invention provides a material to be welded which is used for butt welding capable of forming a pipe or an apparatus which can, after the welding has been done, reduce mixing of particles and provide at a high reproducibility a highly clean atmosphere in which the concentration of impurities such as water is minimized; and a method of cutting this material. The invention also provides a wire for wire electric discharge machining which is capable of preventing a decrease in chromium composition in the vicinity of a weld bead formed after a welding has been carried out. 1) The material to be welded is characterized in that a butting surface is formed by cutting the material with a wire electric discharge machine. The surface of a wire in the wire electric discharge machine preferably comprises stainless steel or chromium, and stainless steel or chromium is preferably deposited to a thickness of not less than 0.1 'mu'm on a cut surface. 2) The cutting method is characterized in that at least a butting surface is cut using a wire electric discharge machine. 3) The wire is characterized in that at least the surface thereof comprises stainless steel or chromium.
Inventors:
OHMI TADAHIRO (JP)
Application Number:
PCT/JP1995/001088
Publication Date:
December 14, 1995
Filing Date:
June 02, 1995
Export Citation:
Assignee:
OHMI TADAHIRO (JP)
International Classes:
B23H7/02; B23H7/08; B23K9/00; B23K9/028; B23K9/035; B23K9/23; B23K31/00; B23K31/02; (IPC1-7): B23K9/00; B23K9/028; B23K9/167; B23K26/00; B23K28/00; B23H7/02; B23H7/08; F16L13/00; F17D1/02
Foreign References:
| JPS61288932A | 1986-12-19 | |||
| JPH0639543A | 1994-02-15 | |||
| JPH05220628A | 1993-08-31 | |||
| JPS57118830A | 1982-07-23 | |||
| JPH0538574A | 1993-02-19 |
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