Title:
WELDING CONTROL METHOD, WELDING CONTROL DEVICE, WELDING POWER SUPPLY, WELDING SYSTEM, PROGRAM, WELDING METHOD, AND ADDITIVE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/042565
Kind Code:
A1
Abstract:
The present invention achieves both stable welding penetration depth and reduced spatters in an arc welding technique in which forward feeding and reverse feeding of a wire tip end are repeated cyclically. The present invention performs control such that: a period of a combination of a forward feed period (TP) and a reverse feed period (TN) is set as a one cycle; the frequency (f) therefor is set to 50-150 Hz; the relationship between an average current (IP-AVE) in a current non-suppressed period (TIP) and an average current (IB-AVE) in a current suppressed period (TIB) is defined as 0.65≤IP-AVE/(IP-AVE+IB-AVE)≤0.90; a wave height (Wh), which is the change width of the tip end position of a welding wire at the uppermost end and the lowermost end, is set to 14-35% of the distance between the tip and the base member of the welding wire; the relationship between a given current non-suppressed period (TIP) and the immediately subsequent current suppressed period (TIB) is defined as 0.30≤TIB/(TIP+TIB)≤0.60; the relationship between the forward feed period (TP) and the reverse feed period (TN) is defined as 0.40≤TN/(TP+TN)≤0.70; the relationship among the current non-suppressed period (TIP), the current suppressed period (TIB), the forward feed period (TP), and the reverse feed period (TN) is defined as {TN/(TP+TN)}>{TIB/(TIP+TIB)}; and the current non-suppressed period TIP accounts for at least 2/3 of the forward feed period (TP).
Inventors:
YAMAZAKI KEI
KITAMURA YOSHIAKI
KITAMURA YOSHIAKI
Application Number:
PCT/JP2022/029717
Publication Date:
March 23, 2023
Filing Date:
August 02, 2022
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
B23K9/12; B23K9/09; B23K9/173
Domestic Patent References:
| WO2020067074A1 | 2020-04-02 |
Foreign References:
| JP2014083553A | 2014-05-12 | |||
| JPS60180675A | 1985-09-14 | |||
| JP2021152554A | 2021-09-30 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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