INTERNAL CLAMP DEVICE

PURPOSE: To obtain good penetration bead as well as to greatly suppress deformation, strain in joining the high alloy steel tube of stainless steel tube, etc., by one side welding. CONSTITUTION: The clamp head alternately arranged with A head 6a and B head are strongly welded with pressure at the in...

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Bibliographic Details
Main Authors YAHAGI ISAMU, MURAKAMI TADANOBU, SATO MINORU, KANAYAMA KIYOSHI
Format Patent
LanguageEnglish
Published 09.04.1996
Edition6
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:PURPOSE: To obtain good penetration bead as well as to greatly suppress deformation, strain in joining the high alloy steel tube of stainless steel tube, etc., by one side welding. CONSTITUTION: The clamp head alternately arranged with A head 6a and B head are strongly welded with pressure at the inner face of welding zone of piping by pressing device. In welding, inert gas is supplied from a gas supply hole 18 of each head into the gaseous chamber 24 formed with the recessed part of lower center part of backing copper plates 19, 20, inert gas is injected into the inside of welding joint part from plural gas discharge holes arranged in the backing copper plate 19, 20, the air inside welding joint part is purged, the inside is filled with inert gas and weld metal is shielded.
Bibliography:Application Number: JP19940246841