Title:
METHOD AND DEVICE FOR BUTT WELDING OF HOT ROLLED SLAB
Document Type and Number:
Japanese Patent JP3774536
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To correctly transmit a welding laser beam to a position of welding regardless of an optical strain caused by the heat of laser beam transmission optical system and transmission space.
SOLUTION: Before bringing in the hot rolled slabs 1, 3 to a position of welding, by transmitting a reference laser beam LR to the position of welding through a transmission optical path P, by adjusting beam transmission adjusting means 43, 45 so that a welding point is irradiated by the reference laser beam LR, after that, by bringing in the hot rolled slabs 1, 3 to the position of welding, and by correcting a thermal effect caused by the hot rolled slabs 1, 3 which passed just before the bringing-in, and butt welding is performed to the hot rolled slabs 1, 3.
Inventors:
Kido Motoi
Katsuhiro Minamida
Hiroyuki Yamamoto
Katsuhiro Minamida
Hiroyuki Yamamoto
Application Number:
JP7928997A
Publication Date:
May 17, 2006
Filing Date:
March 31, 1997
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
G02B7/198; B21B1/26; B21B15/00; B23K26/00; B23K26/02; B23K26/042; B23K26/06; B23K26/064; B23K26/21; B23K101/16; (IPC1-7): B23K26/00; B23K26/00; B21B1/26; B21B15/00; B23K26/02; B23K26/06; B23K26/08; G02B7/198
Domestic Patent References:
| JP8300008A | ||||
| JP7024589A | ||||
| JP8309572A | ||||
| JP1271087A | ||||
| JP5138383A | ||||
| JP63194886A |
Attorney, Agent or Firm:
Tomoyuki Yabuki
Tsugeko Shigeo
Tsugeko Shigeo