JPS56109187A - Monitoring method for shielding gas for welding - Google Patents
Monitoring method for shielding gas for weldingInfo
- Publication number
- JPS56109187A JPS56109187A JP1230980A JP1230980A JPS56109187A JP S56109187 A JPS56109187 A JP S56109187A JP 1230980 A JP1230980 A JP 1230980A JP 1230980 A JP1230980 A JP 1230980A JP S56109187 A JPS56109187 A JP S56109187A
- Authority
- JP
- Japan
- Prior art keywords
- shielding gas
- amount
- welding
- air
- occurrence
- 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.)
- Pending
Links
Abstract
PURPOSE: To prevent the occurrence of welding defects in a shielding gas welding method by detecting the amount of air introduced into a shielding gas from the NO obtained by reducing the NOx included in the sample of the shielding gas and controlling said amount rapidly and accuartely.
CONSTITUTION: The arc 3 is generated between a welding electrode 1 and the materials 2 to be welded, and a sheilding gas 5 such as He, Ar or CO2 is released from a shielding gas nozzle 4, whereby the weld zone 2A of the materials 2 is welded. At this time, part of the shielding gas 5 is sampled by a sampling probe 7, and is flowed in a catalyst packed layer 8, whereby the NOx contained is reduced to NO. The amount thereof is measured with an NO measuring device 9. From said value, the amount of NOx is calculated and further the amount of included air 6 is estimated. The amount of this air is made rapidly decreased, whereby the occurrence of welding defects owing to the air included in the shielding gas is prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1230980A JPS56109187A (en) | 1980-02-04 | 1980-02-04 | Monitoring method for shielding gas for welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1230980A JPS56109187A (en) | 1980-02-04 | 1980-02-04 | Monitoring method for shielding gas for welding |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56109187A true JPS56109187A (en) | 1981-08-29 |
Family
ID=11801707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1230980A Pending JPS56109187A (en) | 1980-02-04 | 1980-02-04 | Monitoring method for shielding gas for welding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56109187A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1847828A1 (en) * | 2006-04-20 | 2007-10-24 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Use of tunable diode lasers for controlling a brazing process |
WO2008101264A1 (en) * | 2007-02-22 | 2008-08-28 | Fronius International Gmbh | Device and method for shielding gas measurement |
-
1980
- 1980-02-04 JP JP1230980A patent/JPS56109187A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1847828A1 (en) * | 2006-04-20 | 2007-10-24 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Use of tunable diode lasers for controlling a brazing process |
WO2008101264A1 (en) * | 2007-02-22 | 2008-08-28 | Fronius International Gmbh | Device and method for shielding gas measurement |
JP2010519045A (en) * | 2007-02-22 | 2010-06-03 | フロニウス・インテルナツィオナール・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Apparatus and method for measuring protective gas |
US8210025B2 (en) | 2007-02-22 | 2012-07-03 | Fronius International Gmbh | Arrangement and method for protective-gas measurement |
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