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Title:
ADJUSTMENT CONTROL METHOD FOR WELDING CONDITIONS
Document Type and Number:
Japanese Patent JPH10137936
Kind Code:
A
Abstract:

To prevent generation of welding defects accompanying the fluctuation of a root gap by controlling so as to attain proper welding conditions corresponding to a root gap based on an estimated result.

Using, as a reference, So, an arc sensor signal ΔSc at the time of a root gap G=2mm, the size of So is compared with Sd, an arc sensor signal corresponding to the actual root gap. If Sd>So, the root gap is discriminated as large, and vice versa. The relation between the root gap and the output of the rotary arc sensor is set as a data base and registered. On the basis of such output information of the rotary arc sensor that is obtained from highspeed rotary arc welding, the root gap is estimated by computation. The control is done so as to attain proper welding conditions corresponding to the root gap based on that estimated result. As a result, it is possible to estimate the condition and tendency of root gap fluctuation based on the output information of the rotary arc sensor.


Inventors:
GOTO NAOYUKI
MURAYAMA MASATOMO
KANJIYOU YOSHIHIRO
SUGITANI YUJI
Application Number:
JP30137796A
Publication Date:
May 26, 1998
Filing Date:
November 13, 1996
Export Citation:
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Assignee:
NIPPON KOKAN KK
International Classes:
B23K9/02; B23K9/095; B23K9/127; (IPC1-7): B23K9/095; B23K9/02; B23K9/095; B23K9/127
Attorney, Agent or Firm:
Muneharu Sasaki (3 outside)