JPS57142778A - Welding torch for narrow groove welding - Google Patents
Welding torch for narrow groove weldingInfo
- Publication number
- JPS57142778A JPS57142778A JP2764081A JP2764081A JPS57142778A JP S57142778 A JPS57142778 A JP S57142778A JP 2764081 A JP2764081 A JP 2764081A JP 2764081 A JP2764081 A JP 2764081A JP S57142778 A JPS57142778 A JP S57142778A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- torch
- parts
- passages
- gas
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/0213—Narrow gap welding
Abstract
PURPOSE:To reduce the size of a welding torch for narrow groove welding and to make the welding of narrow grooves of intricate shapes possible as well by improving the shape of inert gas passages in said torch and disposing cooling water pipes on both sides of a contact tube. CONSTITUTION:The welding wire in a welding torch 1 moves in a contact tube 16, and is supplied through the contact tip 19 of a lower block 20 to the weld zone. Cooling water pipes 15 are disposed on both side parts of the tube 16, and passages 12a, 12b for an inert gas are disposed on both sides thereof. The sectional area of the gas passages is made small to reduce the size of the torch 1. Bent parts 18 are provided in the middle parts of these passages 12a, 12b and since the flow direction of the inert gas of high velocity changes abruptly in these parts, tubulent flow is created. In addition, the velocity of flow of the gas is decreased by the increase in the sectional area of these parts, and the gas is injected at the low velocity through nozzles 17a, 17b to the weld zone, thus the sure welding is made possible in the narrow groove as well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2764081A JPS5946712B2 (en) | 1981-02-28 | 1981-02-28 | Welding torch for narrow gap welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2764081A JPS5946712B2 (en) | 1981-02-28 | 1981-02-28 | Welding torch for narrow gap welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57142778A true JPS57142778A (en) | 1982-09-03 |
| JPS5946712B2 JPS5946712B2 (en) | 1984-11-14 |
Family
ID=12226531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2764081A Expired JPS5946712B2 (en) | 1981-02-28 | 1981-02-28 | Welding torch for narrow gap welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946712B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121470U (en) * | 1983-12-20 | 1985-08-16 | 三菱重工業株式会社 | Narrow gap MIG welding torch |
| KR20010095571A (en) * | 2000-04-11 | 2001-11-07 | 김징완 | Narrow gap welding torch |
| JP2013146771A (en) * | 2012-01-20 | 2013-08-01 | Mitsubishi Heavy Ind Ltd | Back shield device for welding |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5979015B2 (en) * | 2013-01-16 | 2016-08-24 | 日立金属株式会社 | Insulated wire manufacturing method and apparatus |
-
1981
- 1981-02-28 JP JP2764081A patent/JPS5946712B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121470U (en) * | 1983-12-20 | 1985-08-16 | 三菱重工業株式会社 | Narrow gap MIG welding torch |
| KR20010095571A (en) * | 2000-04-11 | 2001-11-07 | 김징완 | Narrow gap welding torch |
| JP2013146771A (en) * | 2012-01-20 | 2013-08-01 | Mitsubishi Heavy Ind Ltd | Back shield device for welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5946712B2 (en) | 1984-11-14 |
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