CN102896442A - Arc deformation correction method for butt welding of steel plates - Google Patents
Arc deformation correction method for butt welding of steel plates Download PDFInfo
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- CN102896442A CN102896442A CN2011102102932A CN201110210293A CN102896442A CN 102896442 A CN102896442 A CN 102896442A CN 2011102102932 A CN2011102102932 A CN 2011102102932A CN 201110210293 A CN201110210293 A CN 201110210293A CN 102896442 A CN102896442 A CN 102896442A
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- Prior art keywords
- heating
- flame
- steel plate
- welding
- welding torch
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- 238000003466 welding Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000007935 neutral effect Effects 0.000 claims abstract description 3
- 238000003032 molecular docking Methods 0.000 claims description 10
- 239000000729 antidote Substances 0.000 claims description 7
- 239000002737 fuel gas Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
The invention relates to an arc deformation correction method for butt welding of steel plates. Convex surfaces are corrected by heating, flame heating to a welding seam is carried out by a gas welding gun along two sides of the welding seam parallelly, neutral flame is utilized for heating, and the correction heating temperature ranges from 500 DEG C to 800 DEG C. The arc deformation correction method is easy to operate and control.
Description
Affiliated field
What the present invention relates to is the method that the caused welding deformation of steel plate docking welding is corrected.
The prior art situation
At present, steel construction is widely used in the fields such as the construction of hydropower stations, factory building.But mostly there is the welding deformation problem in member because welding local heating is crossed in manufacturing process, if welding deformation is not corrected, then not only affects structural entity and installs, and also can reduce the security reliability of engineering.
For the distortion that steel plate docking welding causes, the antidote that China uses in process of production has machinery to correct and flame correction method, but open there are no the flame straightening technology.Flame straightening is difficult method of holding, and temperature is controlled the improper new more large deformation of member that also can cause.
Summary of the invention
The purpose of this invention is to provide a kind of simple to operately, the arc-shaped deformation antidote, particularly thickness that the steel plate that is easy to hold docking welding causes is the arc-shaped deformation antidote that the steel plate docking welding of 5-20mm causes.
Steel are heated with 1.2 * 10
-5℃ linear expansivity extend to all directions.Because object is to the restriction of heated object on every side, heated object is compressed, and will reduce to some extent than the original length when cooling, so shorten to some extent before the Length Ratio after shrinking is heated, causes distortion.Same this specific character also provides possibility for flame straightening.Correct with this method, in position member is carried out the flame heating, when member cools off, produce shrinkage stress, reach the purpose of correcting distortion.
The arc-shaped deformation antidote that steel plate docking welding of the present invention causes:
(1) measures the distortion size with ruler, namely measure the camber of true variant part with ruler, determine the deflection size.
(2) to the another side of welding, the namely convex surface of steel plate deformed heating is corrected:
Steadily carry out the flame heating in the both sides of parallel weld seam with fuel gas welding torch flame, adopt the neutral flame heating, correct 500～600 ℃ of heating-up temperatures; To being out of shape large weldment, it corrects 700～800 ℃ of heating-up temperatures, point centered by distance weld seam 20mm place, and parallel weld seam carries out the strip heating with fuel gas welding torch flame, with some temperature meter detected temperatures, the numerical value after gas welding torch flame leaves.
The stress that flame straightening causes is the same with welding interior stress all to be internal stress.Therefore must implement cautiously in manufacture of steel structure, general part mustn't be done annealing in process after correcting, but need do annealing in process to the corrective piece that the know-how regulation is arranged, and corrects stress to eliminate.By the standard annealing process weldment is annealed.
The arc-shaped deformation antidote that steel plate docking welding of the present invention causes, simple to operate, be easy to hold.
Implementation is square
Embodiment 1
When the present invention corrects for the thick docking steel plate in the 10mm left and right sides, another side to welding, the convex surface of steel plate deformed point centered by distance weld seam 20mm place namely, parallel weld seam carries out the strip heating with fuel gas welding torch flame, 500～600 ℃ of heating-up temperatures, detect the numerical value after gas welding torch flame leaves with a temperature meter.
Embodiment 2
When correcting for the thick docking steel plate in the 20mm left and right sides, another side to welding, the convex surface of steel plate deformed point centered by distance weld seam 20mm place namely, parallel weld seam carries out the strip heating with fuel gas welding torch flame, 700～800 ℃ of heating-up temperatures, detect the numerical value after gas welding torch flame leaves with a temperature meter.
Claims (1)
1. the arc-shaped deformation antidote that causes is welded in the steel plate docking, it is characterized in that:
(1) measures the distortion size with ruler, namely measure the camber of true variant part with ruler, determine the deflection size;
(2) to the another side of welding, the namely convex surface of steel plate deformed heating is corrected,
With fuel gas welding torch flame point centered by distance weld seam 20mm place, the both sides of parallel weld seam, carry out the steady flame heating of strip with fuel gas welding torch flame, adopt the neutral flame heating, correct 500～600 ℃ of heating-up temperatures; To being out of shape large weldment, it corrects 700～800 ℃ of heating-up temperatures, with some temperature meter detected temperatures, the numerical value after gas welding torch flame leaves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102102932A CN102896442A (en) | 2011-07-26 | 2011-07-26 | Arc deformation correction method for butt welding of steel plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102102932A CN102896442A (en) | 2011-07-26 | 2011-07-26 | Arc deformation correction method for butt welding of steel plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102896442A true CN102896442A (en) | 2013-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102102932A Pending CN102896442A (en) | 2011-07-26 | 2011-07-26 | Arc deformation correction method for butt welding of steel plates |
Country Status (1)
| Country | Link |
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| CN (1) | CN102896442A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341529A (en) * | 2013-06-25 | 2013-10-09 | 保定天威集团有限公司 | Method for straightening deformation of tank opening of large transformer tank body |
| CN103909355A (en) * | 2014-03-25 | 2014-07-09 | 苏州隆鑫包装科技有限公司 | Welding process of coaming box |
| CN107570901A (en) * | 2017-09-05 | 2018-01-12 | 江苏鸥盛海洋环保设备有限公司 | A kind of orlo anti-deformation welding procedure |
| CN108015127A (en) * | 2016-10-31 | 2018-05-11 | 特变电工沈阳变压器集团有限公司 | A kind of oil tank of transformer flute profile strengthens the flame straightening method of iron |
| CN110390179A (en) * | 2019-08-22 | 2019-10-29 | 惠州市新一代工业互联网创新研究院 | A kind of steel structure corrective force mathematical model construction method |
| CN112742895A (en) * | 2019-10-29 | 2021-05-04 | 中船海洋动力部件有限公司 | Correction method of vibration simulation platform with size difference of table top |
Citations (1)
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| KR20080032745A (en) * | 2006-10-10 | 2008-04-16 | 현대중공업 주식회사 | Electro gas welding process using replaceable weaver for heavy-wall welding |
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2011
- 2011-07-26 CN CN2011102102932A patent/CN102896442A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080032745A (en) * | 2006-10-10 | 2008-04-16 | 현대중공업 주식회사 | Electro gas welding process using replaceable weaver for heavy-wall welding |
Non-Patent Citations (4)
| Title |
|---|
| 刘兵等: "火焰矫正工艺参数的选择", 《金属热处理》, no. 06, 25 June 2008 (2008-06-25) * |
| 刘天顺: "钢结构件的火焰矫正典型实例(一)", 《机械工人(热加工)》, no. 11, 9 November 2006 (2006-11-09) * |
| 屈永建等: "火焰矫正法在工程实践中的应用", 《金属加工(热加工)》, no. 08, 20 April 2008 (2008-04-20) * |
| 王绪桥: "焊接变形的火焰矫正", 《金属加工(热加工)》, no. 02, 20 January 2011 (2011-01-20) * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341529A (en) * | 2013-06-25 | 2013-10-09 | 保定天威集团有限公司 | Method for straightening deformation of tank opening of large transformer tank body |
| CN103909355A (en) * | 2014-03-25 | 2014-07-09 | 苏州隆鑫包装科技有限公司 | Welding process of coaming box |
| CN103909355B (en) * | 2014-03-25 | 2016-05-11 | 苏州隆鑫包装科技有限公司 | A kind of welding procedure of hoarding box |
| CN108015127A (en) * | 2016-10-31 | 2018-05-11 | 特变电工沈阳变压器集团有限公司 | A kind of oil tank of transformer flute profile strengthens the flame straightening method of iron |
| CN107570901A (en) * | 2017-09-05 | 2018-01-12 | 江苏鸥盛海洋环保设备有限公司 | A kind of orlo anti-deformation welding procedure |
| CN110390179A (en) * | 2019-08-22 | 2019-10-29 | 惠州市新一代工业互联网创新研究院 | A kind of steel structure corrective force mathematical model construction method |
| CN112742895A (en) * | 2019-10-29 | 2021-05-04 | 中船海洋动力部件有限公司 | Correction method of vibration simulation platform with size difference of table top |
| CN112742895B (en) * | 2019-10-29 | 2023-02-28 | 中船海洋动力部件有限公司 | Correction method of vibration simulation platform with size difference of table top |
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Owner name: STATE GRID XINYUAN CO., LTD. LIAONING PUSHIHE WATE Effective date: 20131211 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: LIAONING PUSHIHE WATER-STORAGE CO., LTD. Effective date: 20131211 |
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Free format text: CORRECT: ADDRESS; FROM: 118126 DANDONG, LIAONING PROVINCE TO: 100031 XICHENG, BEIJING |
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Effective date of registration: 20131211 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: State Grid Xinyuan Co., Ltd. Applicant after: Liaoning Pushihe Water-Storage Co., Ltd. Address before: 118126 Liaoning province Dandong City Zhen'an District Taiping Bay, Liaoning Pushihe Pumped Storage Power Co. Ltd. Applicant before: Liaoning Pushihe Water-Storage Co., Ltd. |
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Application publication date: 20130130 |