JPS5686681A - Method of detecting burn through of molten metal in welding - Google Patents
Method of detecting burn through of molten metal in weldingInfo
- Publication number
- JPS5686681A JPS5686681A JP16436879A JP16436879A JPS5686681A JP S5686681 A JPS5686681 A JP S5686681A JP 16436879 A JP16436879 A JP 16436879A JP 16436879 A JP16436879 A JP 16436879A JP S5686681 A JPS5686681 A JP S5686681A
- Authority
- JP
- Japan
- Prior art keywords
- burn
- circuit
- welding current
- welding
- holding circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To eliminate occurrence of defects in welding by detecting arc voltage or welding current and outputting a burn through signal when the width of variation of the detected value exceeds previously set upper limit value and lower limit value.
CONSTITUTION: When the welding current becomes lower than the lower limit set value due to arc break or burn through a comparator-discriminator circuit 3 acts to give an output pulse to a holding circuit 4. The holding circuit 4 holds the pulse signal (a) for a fixed time after the input is made. On the other hand, when the welding current exceeds the upper limit set value by contact of wire with the base material after an occurrence of arc break and burn through, a comparator-discriminator circuit 5 acts to give an output pulse to a holding circuit 6. The holding circuit 6 holds the pulse signal (b) for a fixed time after the input is made. When the width of variation of the welding current becomes greater due to burn through, a coincidence circuit 7 acts to recognize burn through by the output signal (c) and actuates a condition change circuit 8 and a buzzer 9.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16436879A JPS5686681A (en) | 1979-12-17 | 1979-12-17 | Method of detecting burn through of molten metal in welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16436879A JPS5686681A (en) | 1979-12-17 | 1979-12-17 | Method of detecting burn through of molten metal in welding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5686681A true JPS5686681A (en) | 1981-07-14 |
JPS6227911B2 JPS6227911B2 (en) | 1987-06-17 |
Family
ID=15791807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16436879A Granted JPS5686681A (en) | 1979-12-17 | 1979-12-17 | Method of detecting burn through of molten metal in welding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5686681A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6133769A (en) * | 1984-07-24 | 1986-02-17 | Nippon Sharyo Seizo Kaisha Ltd | Penetration welding method |
CN105081525A (en) * | 2015-09-14 | 2015-11-25 | 山东大学 | Arc machining discharge state detecting system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0295705U (en) * | 1989-01-14 | 1990-07-31 |
-
1979
- 1979-12-17 JP JP16436879A patent/JPS5686681A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6133769A (en) * | 1984-07-24 | 1986-02-17 | Nippon Sharyo Seizo Kaisha Ltd | Penetration welding method |
CN105081525A (en) * | 2015-09-14 | 2015-11-25 | 山东大学 | Arc machining discharge state detecting system |
Also Published As
Publication number | Publication date |
---|---|
JPS6227911B2 (en) | 1987-06-17 |
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