JPS56109186A - Monitoring method for shielding gas for welding - Google Patents

Monitoring method for shielding gas for welding

Info

Publication number
JPS56109186A
JPS56109186A JP1230880A JP1230880A JPS56109186A JP S56109186 A JPS56109186 A JP S56109186A JP 1230880 A JP1230880 A JP 1230880A JP 1230880 A JP1230880 A JP 1230880A JP S56109186 A JPS56109186 A JP S56109186A
Authority
JP
Japan
Prior art keywords
shielding gas
amount
welding
air
reactor
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
Application number
JP1230880A
Other languages
Japanese (ja)
Inventor
Minoru Hashiguchi
Jun Izumi
Hiroyuki Tsutaya
Hiroshi Fujimura
Takijiro Shimamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP1230880A priority Critical patent/JPS56109186A/en
Publication of JPS56109186A publication Critical patent/JPS56109186A/en
Pending legal-status Critical Current

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  • Arc Welding In General (AREA)

Abstract

PURPOSE: To prevent the cocurrence of welding defects by detecting the amount of the inclusion of air into a shielding gas from the amount of NO2 obtained by oxidizing the sample of the shielding gas and controlling said amount rapidly and accurately in a shielding gas welding method.
CONSTITUTION: The arc 3 is generated between a W electrode 1 and the material 2 to be welded, and the circumference of a weld zone 2A is shielded by an Ar gas 5 released from a shielding gas nozzle 4. During welding, a part of the shielding gas 5 is sampled by a sampling probe 7, and is sent into a reactor 8 made of quartz glass. The NOx in the shielding gas in the reactor 8 is oxidized to NO2 by the ultraviolet rays 9 radiated from the welding arc 3 and the amount thereof is measured with a visible absorption type NO2 measuring device 10. From the value thus measured, the amount of the air included in the shielding gas 5 is estimated, and the amount of the included air is decreased, whereby the occurrence of welding defects is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP1230880A 1980-02-04 1980-02-04 Monitoring method for shielding gas for welding Pending JPS56109186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1230880A JPS56109186A (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
JP1230880A JPS56109186A (en) 1980-02-04 1980-02-04 Monitoring method for shielding gas for welding

Publications (1)

Publication Number Publication Date
JPS56109186A true JPS56109186A (en) 1981-08-29

Family

ID=11801679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1230880A Pending JPS56109186A (en) 1980-02-04 1980-02-04 Monitoring method for shielding gas for welding

Country Status (1)

Country Link
JP (1) JPS56109186A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60195064A (en) * 1984-03-15 1985-10-03 日本特殊陶業株式会社 Fiber reinforced composite ceramics and manufacture
US5918793A (en) * 1994-08-03 1999-07-06 Kopke, Sr.; William Peter Weld test apparatus and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60195064A (en) * 1984-03-15 1985-10-03 日本特殊陶業株式会社 Fiber reinforced composite ceramics and manufacture
JPH0536384B2 (en) * 1984-03-15 1993-05-28 Ngk Spark Plug Co
US5918793A (en) * 1994-08-03 1999-07-06 Kopke, Sr.; William Peter Weld test apparatus and method

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