Title:
METHOD FOR JOINING TITANIUM FRAME FOR BICYLE
Document Type and Number:
Japanese Patent JP2804444
Kind Code:
B2
Abstract:
PURPOSE: To provide a sound welded part where the welding efficiency is high, and the weld metal and heat affected zone are prevented from being oxidized and nitrided in achieving the resistance welding of a frame of a titanium bicycle.
CONSTITUTION: In connecting method of a frame for a titanium bicycle consisting of a main tube 1 orthogonal or diagonal to a head tube, a center core electrode 4 is inserted in the head tube 2, the center core electrode 4 is fixed in a lowering manner by an upper electrode 5, and a lower electrode 3 which is abutted on the circumferential side of the head tube 2 and provided with a weld metal receiving groove of the joined part is fixed to the main tube 1 to achieve the resistance welding. The inner side of the lower electrode 3 is cooled with water, and provided with an inert gas ejecting nozzle in the vicinity of the weld metal receiving groove.
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Inventors:
Taiji Hase
Shigeru Chino
Shotaro Nishida
Shozo Nabeya
Masaaki Iwata
Shigeru Chino
Shotaro Nishida
Shozo Nabeya
Masaaki Iwata
Application Number:
JP27679194A
Publication Date:
September 24, 1998
Filing Date:
November 10, 1994
Export Citation:
Assignee:
Nippon Steel Welding Industry Co., Ltd.
Nippon Steel Corporation
Matsushita Electric Industrial Co., Ltd
Nippon Steel Corporation
Matsushita Electric Industrial Co., Ltd
International Classes:
B62K19/20; B23K11/00; B23K11/02; B23K11/18; B23K11/30; B23K101/06; B23K103/14; (IPC1-7): B23K11/00; B23K11/18
Attorney, Agent or Firm:
Hiroaki Tamura (1 outside)
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