CN109530484A - A method of utilizing flame straightening H-shaped steel welding deformation - Google Patents
A method of utilizing flame straightening H-shaped steel welding deformation Download PDFInfo
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- CN109530484A CN109530484A CN201811648400.8A CN201811648400A CN109530484A CN 109530484 A CN109530484 A CN 109530484A CN 201811648400 A CN201811648400 A CN 201811648400A CN 109530484 A CN109530484 A CN 109530484A
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- shaped steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A method of using flame straightening H-shaped steel welding deformation, belonging to H-shaped steel welding technical field.Baking certain time for the first time is carried out to H-shaped steel flange plate welding deformation position using oxyacetylene torch, after toasting position cooling, according to the degree of H-shaped steel flange plate contraction distortion, to H-shaped steel flange plate, correction rear carries out second of baking certain time for the first time again, after position to be baked is cooling, the contraction correction of H-shaped steel flange plate deformation position is smooth, and the correction of welded H shape steel finishes.The advantage is that the flame straightening method is simple to operation, construction cost is greatly reduced, achieves good economic benefit for company.
Description
Technical field
The invention belongs to H-shaped steel welding technical fields, in particular, provide a kind of utilization flame straightening H-shaped steel welding
The method of deformation.
Background technique
It is generally whole to welding H-shaped steel using straightening machine for the welding deformation that postwelding generates when H-shaped steel welding
Correction, but limited sometimes by area condition, scene does not have straightening machine, can not be using mechanical correction, it can only be by the welded H shape of deformation
Steel, which transports, carries out mechanical correction in the factory of straightening machine, take a lot of work, is time-consuming, increasing the investment of construction cost.I exists at unit
It is for a kind of method that workshop welded H shape steel column uses flame straightening welding deformation, i.e., sharp in steel spare part construction of hydropower
H-shaped steel flange plate (plate thickness 25mm) welding deformation position is carried out with oxyacetylene torch to toast certain time, baking portion for the first time
After position is cooling, according to the degree of flange plate contraction distortion, then to flange plate, correction rear carries out second of baking one for the first time
It fixes time (empirical value), after position to be baked is cooling, the contraction correction of flange plate deformation position is smooth, and welded H shape steel has been corrected
Finish.The flame straightening method is simple to operation, greatly reduces construction cost, has accumulated invaluable experience for similar construction later.
Summary of the invention
The purpose of the present invention is to provide a kind of methods using flame straightening H-shaped steel welding deformation, utilize oxy-acetylene fire
Flame carries out baking certain time (every meter is toasted about 5 minutes) for the first time to H-shaped steel flange plate (plate thickness 25mm) welding deformation position,
After toasting position cooling, according to the degree of flange plate contraction distortion, then to flange plate, correction rear is carried out second for the first time
Certain time (every meter is toasted about 8 minutes, empirical value) is toasted, after position to be baked is cooling, flange plate deformation position, which is shunk, to be rectified
Just smooth, the correction of welded H shape steel finishes.Specific step is as follows:
The first step, field assembly welded H shape steel 5, H-shaped steel flange plate 1 (plate thickness 25mm) are welded to shrink and be produced due to fillet weld 2
The shape that changes (Fig. 1)；
Second step carries out for the first time 1 (plate thickness 25mm) welding deformation position of H-shaped steel flange plate using oxyacetylene torch 3
Baking, every meter baking 4-6 minutes, (Fig. 2)；
Third step, after baking position is cooling, according to the degree of 1 contraction distortion of H-shaped steel flange plate, then to H-shaped steel flange plate 1
Correction rear 4 carries out second and toasts for the first time, every meter baking 7-9 minutes；
4th step, after second of the baking position of H-shaped steel flange plate 1 is cooling, 1 deformation position of H-shaped steel flange plate shrinks correction
Smooth, the correction of welded H shape steel 5 finishes (Fig. 4).
The flame straightening method is simple to operation, greatly reduces construction cost, achieves good economic effect for company
Benefit.
Detailed description of the invention
Fig. 1 is H-shaped steel welding contraction distortion cross-section diagram.
Fig. 2 is first time flame straightening H-shaped steel welding deformation cross-section diagram.
Fig. 3 is second of flame straightening H-shaped steel welding deformation cross-section diagram.
Fig. 4 is that the correction of welded H shape steel finishes cross-section diagram.
In figure, flange plate 1, fillet weld 2, oxyacetylene torch 3, for the first time correction rear 4, welded H shape steel 5.
Specific embodiment
Fig. 1-Fig. 4 is a kind of specific embodiment of the invention.Specific embodiment is as follows:
The first step, field assembly welded H shape steel 5, H-shaped steel flange plate 1 (plate thickness 25mm) are welded to shrink and be produced due to fillet weld 2
Change shape；
Second step carries out for the first time 1 (plate thickness 25mm) welding deformation position of H-shaped steel flange plate using oxyacetylene torch 3
Toast certain time (every meter is toasted about 5 minutes)；
Third step, after baking position is cooling, according to the degree of 1 contraction distortion of H-shaped steel flange plate, then to H-shaped steel flange plate 1
Correction rear 4 carries out second of baking certain time for the first time (every meter is toasted about 8 minutes)；
4th step, after second of the baking position of H-shaped steel flange plate 1 is cooling, 1 deformation position of H-shaped steel flange plate shrinks correction
Smooth, the correction of welded H shape steel 5 finishes.
Claims (2)
1. a kind of method using flame straightening H-shaped steel welding deformation, which is characterized in that processing step is as follows:
The first step, field assembly welded H shape steel (5), H-shaped steel flange plate (1) is shunk due to fillet weld (2) welding to be deformed；
Second step carries out first time baking, every meter of baking to H-shaped steel flange plate (1) welding deformation position using oxyacetylene torch (3)
It is 4-6 minutes roasting；
Third step, after baking position is cooling, according to the degree of H-shaped steel flange plate (1) contraction distortion, then to H-shaped steel flange plate (1)
Correction rear (4) for the first time carries out second and toasts, every meter baking 7-9 minutes；
4th step, after second of H-shaped steel flange plate (1) is toasted position cooling, the correction of H-shaped steel flange plate (1) deformation retract is smooth,
Welded H shape steel (5) correction finishes.
2. the method according to claim 1, wherein H-shaped steel flange plate (1) plate thickness is 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648400.8A CN109530484A (en) | 2018-12-30 | 2018-12-30 | A method of utilizing flame straightening H-shaped steel welding deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811648400.8A CN109530484A (en) | 2018-12-30 | 2018-12-30 | A method of utilizing flame straightening H-shaped steel welding deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109530484A true CN109530484A (en) | 2019-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811648400.8A Pending CN109530484A (en) | 2018-12-30 | 2018-12-30 | A method of utilizing flame straightening H-shaped steel welding deformation |
Country Status (1)
| Country | Link |
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| CN (1) | CN109530484A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111036714A (en) * | 2019-12-20 | 2020-04-21 | 福建省水利水电工程局有限公司 | Method for correcting deformation of steel gate leaf panel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691787A (en) * | 2009-09-22 | 2010-04-07 | 中铁十二局集团建筑安装工程有限公司 | Converse construction process for middle-high steel structure building |
| CN103397163A (en) * | 2013-08-22 | 2013-11-20 | 中国二十二冶集团有限公司 | Flame strengthening method for H-beam |
| KR20140122867A (en) * | 2013-04-11 | 2014-10-21 | 현대중공업 주식회사 | Back-heating methods of ship for prevent deformation |
| CN104625622A (en) * | 2014-12-15 | 2015-05-20 | 江苏新蓝天钢结构有限公司 | Method for welding ribbon-shaped thick plate box type structure |
-
2018
- 2018-12-30 CN CN201811648400.8A patent/CN109530484A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691787A (en) * | 2009-09-22 | 2010-04-07 | 中铁十二局集团建筑安装工程有限公司 | Converse construction process for middle-high steel structure building |
| KR20140122867A (en) * | 2013-04-11 | 2014-10-21 | 현대중공업 주식회사 | Back-heating methods of ship for prevent deformation |
| CN103397163A (en) * | 2013-08-22 | 2013-11-20 | 中国二十二冶集团有限公司 | Flame strengthening method for H-beam |
| CN104625622A (en) * | 2014-12-15 | 2015-05-20 | 江苏新蓝天钢结构有限公司 | Method for welding ribbon-shaped thick plate box type structure |
Non-Patent Citations (1)
| Title |
|---|
| 畅瑞俊: "水电站闸门大型主梁焊接变形的控制及校正技术", 《机电技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111036714A (en) * | 2019-12-20 | 2020-04-21 | 福建省水利水电工程局有限公司 | Method for correcting deformation of steel gate leaf panel |
| CN111036714B (en) * | 2019-12-20 | 2022-02-01 | 福建省水利水电工程局有限公司 | Method for correcting deformation of steel gate leaf panel |
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Application publication date: 20190329 |