Title:
WELDING METHOD FOR MEMBERS HAVING GAP
Document Type and Number:
Japanese Patent JP3162182
Kind Code:
B2
Abstract:
PURPOSE: To perform welding with high strength without generating chemical reaction with oxygen, nitrogen, water, etc., in the air.
CONSTITUTION: A member 1 to be welded such as a wire rope having a continuous gap inside is held by a holding member 2 and welded to the opposite member 3 with a laser beam 6 from a laser beam torch 5. Prior to welding, shielding gas 4 composed of inert gas such as argon gas is blown out from the laser beam torch 5, simultaneously, it is sucked from a suction port 7 and an air chamber 9 in the holding member 2 is decompressed. Since the gap inside of the member 1 to be welded is replaced with the shielding gas by the pressure difference due to the decompression, the chemical reaction with the air at the time of welding can be prevented.
Inventors:
Hideto Nakata
Application Number:
JP14491892A
Publication Date:
April 25, 2001
Filing Date:
May 11, 1992
Export Citation:
Assignee:
Olympus Optical Co., Ltd.
International Classes:
B21F15/00; B23K9/16; B23K26/12; B23K26/32; (IPC1-7): B23K26/00; B23K9/16; B23K26/12
Domestic Patent References:
| JP1194917A | ||||
| JP5322842A | ||||
| JP61172638A | ||||
| JP4949861A | ||||
| JP5014983B2 | ||||
| JP523879B2 |
Attorney, Agent or Firm:
Takeshi Nara