WELDING EQUIPMENT FOR STEEL PIPE PILE

Japanese Patent JP3160745

B2

PURPOSE: To improve the productivity by providing a plurality of welding equipment on each joint side across the tubular axis of the steel pipe pile to achieve the welding at appropriate and individual welding speed to reduce the welding defects and the cost of the welding material.
CONSTITUTION: A welding equipment 4 is arranged and traveled at high speed to the welding starting position with the reference position (a) as a starting point based on the preliminarily inputted information on the joint type of the steel pipe pile, the length of the right and left joints, the position from the end face of the mother tube, etc. A welding torch 4-2 is automatically set to the angle of dive, the angle of inclination, the welding current and voltage, and the individual welding speed based on the information on the preliminarily inputted joint type. Each welding equipment 4 is automatically stopped when the welding of the individual welding length is completed, each welding torch 4-2 is moved to the position of a spatter removing equipment (wire brush) 4-9 for the welding of the rear side to remove the spatter. After sensing the joint seam, the welding of the rear side is started. After the welding of the rear side is completed, the next steel pipe pile is prepared for the welding, and a traveling truck is retracted at the same time, and the welded steel pipe pile is carried out.

Yukio Yoshida
Kazuhiro Tanaka
Masanobu Yamaguchi

JP8457195A

April 25, 2001

March 17, 1995

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Nippon Steel Corporation

E02D5/08; B23K9/00; B23K9/028; B23K9/12; B23K9/127; B23K9/16; (IPC1-7): B23K9/028; E02D5/08

JP6198443A
JP5200550A
JP615449A
JP51120945A
JP5040438A
JP516832A
JP53131936A
JP5263125U

Masamitsu Akizawa (1 person outside)

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