CN102990209A - Reversed deformation treatment process before welding of H-shaped steel structures - Google Patents
Reversed deformation treatment process before welding of H-shaped steel structures Download PDFInfo
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- CN102990209A CN102990209A CN201210389476XA CN201210389476A CN102990209A CN 102990209 A CN102990209 A CN 102990209A CN 201210389476X A CN201210389476X A CN 201210389476XA CN 201210389476 A CN201210389476 A CN 201210389476A CN 102990209 A CN102990209 A CN 102990209A
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Abstract
The invention discloses a reversed deformation treatment process before the welding of H-shaped steel structures. An H-shaped steel structure after being assembled by using an upper wing plate, a lower wing plate and a web plate is welded into an H shape. The reversed deformation treatment process comprises the following steps: carrying out feeding and local heat treatment on plates; 2, assembling the plates into an H-shaped steel structure; 3, carrying out submerged-arc welding on the H-shaped steel structure. According to the reversed deformation treatment process before the welding of H-shaped steel structures disclosed by the invention, plates are subjected to preheating treatment in advance, so that the quality problem caused by local deformation in the process of welding is eliminated, and operations of collecting and shaping are not required to be performed after welding, thereby greatly improving the operating efficiency and meeting the practical requirements. Compared with the existing flame heating method, the machining cost of the reversed deformation treatment process is reduced by about 90%, therefore, the reversed deformation treatment process is suitable for wide popularization and application, and has remarkable economic benefits.
Description
Technical field
The present invention relates to H shaped steel structure reversible deformation treatment process, relate in particular to the front reversible deformation treatment process of a kind of H shaped steel structure welding, be used for the processing and manufacturing of H shaped steel structure.
Background technology
H shaped steel structure, namely h section steel is a kind of steel structure of increasingly extensive use in modern building fabric, bridge structure and the power plant construction, it has attractive in appearance, the economy of structure, the section mechanical property is good and the characteristics such as good stability.Owing to it has superior structural shape and good mechanical property becomes one of main frame of steel structure.H shaped steel can be divided into hot rolled H-shaped and welded H section steel.Hot rolled H-shaped being widely used in industry and the civil buildings, and welded H section steel adopts hot rolled H-shaped industrial building for part inconvenience.At present, be subject to the restriction of domestic hot rolling technology, slab H shaped steel fraction still relies on import, and is most of by the welding processing moulding.In process of production, the control welding deformation becomes its critical process problem, because welding deformation has not only increased workload and production cost, and has influence on installation, use and the mechanical property of structure.
However, prior art remains a technology controlling and process difficult point to the deformation process of H shaped steel welding.The variant such as flexing distortion, arch distortion, angular deformation still often can occur, and therefore must correct.Existing general adopt edge of a wing inspection machine, anti-bending inspection machine and adopt the process equipment such as flame heating or process to correct, the method that also combines with cold school, hot school is sometimes corrected.But prior art is to the processing of the problem on deformation of H shaped steel welding, and still the expection with people has certain gap.
Summary of the invention
The deficiency that the present invention exists for prior art just provides a kind of H shaped steel structure welding front reversible deformation treatment process.
For addressing the above problem, the technical solution used in the present invention is as follows:
Reversible deformation treatment process before the H shaped steel structure welding, described H shaped steel structure by lower wing plate, upper flange and web assembling after, be welded into " H " type, described reversible deformation treatment process may further comprise the steps:
Step 1: blanking and local heat treatment;
Carry out blanking with blanking machine, concentrate firepower carries out local heat to steel plate position to be welded simultaneously, local heat during for lower wing plate, upper flange blanking, at first concentrate firepower burns red in edge, and then begin to advance, pace is 1.5 m/mins ~ 2 m/mins, and the cross section arch camber amount of steel plate heating is controlled in 5/1000ths;
Step 2: be assembled into H shaped steel structure;
Lower wing plate, upper flange and web that local heat is good are assembled assembling, and an arch face of lower wing plate is relative with an arch face of upper flange;
Step 3: carry out submerged-arc welding;
The H shaped steel structure that assembles is carried out submerged-arc welding, and welding coefficient is electric current 380A, voltage 35V, and the speed of welding of submerged-arc welding is 0.9 m/min ~ 1.2 m/mins, welding sequence is: weld first lower wing plate and web, weld upper flange and web again.
As improvement of the technical scheme, the pace of lower wing plate, upper flange is 1.8 m/mins in the described step 1.
As improvement of the technical scheme, the speed of welding of submerged-arc welding is 1.16 m/mins in the described step 3.
The present invention compared with prior art, implementation result of the present invention is as follows:
Reversible deformation treatment process before the H shaped steel structure welding of the present invention, in advance sheet material is carried out heat treated, local deformation when having eliminated like this welding and the quality problems that cause no longer need to correct shaping after the welding, greatly improve operating efficiency, satisfied actual requirement.Compare with existing flame heating, its processing cost reduces about 90%, is fit to wide popularization and application, remarkable in economical benefits.
Description of drawings
Fig. 1 is H shaped steel structure structural representation of the present invention.
The specific embodiment
Content of the present invention is described below in conjunction with specific embodiments.
As shown in Figure 1, be H shaped steel structure structural representation of the present invention.H shaped steel structure of the present invention comprises: lower wing plate 1, upper flange 2 and web 3, lower wing plate 1, upper flange 2 and web 3 are the steel plate of certain specification size, are welded consisting of " H " type.When lower wing plate 1, upper flange 2 weld with web 3, form four different angle welding A, B, C, D.Because the order of welding is different, lower wing plate 1 during welding, upper flange 2 and web 3 local residing temperature are also different with the degree that has deformed, and therefore the H shaped steel structure of final formation is easy to deform, and there is a big difference with actual requirement.
In order to realize desirable H shaped steel structure of the present invention, prevent distortion, the reversible deformation treatment process is as follows before the welding of the present invention:
Step 1: blanking and local heat treatment;
Carry out blanking with blanking machine, concentrate firepower carries out local heat to steel plate position to be welded simultaneously, local heat during for lower wing plate 1, upper flange 2 blanking, at first concentrate firepower burns red in edge, and then begin to advance, pace is 1.5 m/mins ~ 2 m/mins, optimum pace is 1.8 m/mins, make steel plate heat to such an extent that cross section arch camber amount is controlled in 5/1000ths, should be controlled in 2 millimeters such as 400 millimeters cross section heat shrink arch camber amounts.
Step 2: be assembled into H shaped steel structure;
Step 3: carry out submerged-arc welding;
The H shaped steel structure that assembles is carried out submerged-arc welding, welding coefficient is electric current 380A, voltage 35V, the speed of welding of submerged-arc welding is 0.9 m/min ~ 1.2 m/mins, optimum speed of welding is 1.16 m/mins, and welding sequence is: weld first lower wing plate 1 and web 3, weld upper flange 2 and web 3 again, namely welding produces angle welding A, B first, and welding produces angle welding C, D again.
After adopting above-mentioned parameter and said sequence to carry out the submerged-arc welding contraction, just in time supported clear and before the welding the real abdomen coupled column of two limbs has been carried out the arch camber amount that reversible deformation processing distortion is shunk.
Above content is the detailed description of the present invention being done in conjunction with concrete preferred embodiment, can not assert that implementation of the present invention only limits to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the scope of protection of the invention.
Claims (3)
1.H reversible deformation treatment process before the welding of shaped steel structure, described H shaped steel structure are welded into " H " type after being assembled by lower wing plate (1), upper flange (2) and web (3), it is characterized in that described reversible deformation treatment process may further comprise the steps:
Step 1: blanking and local heat treatment;
Carry out blanking with blanking machine, concentrate firepower carries out local heat to steel plate position to be welded simultaneously, local heat during for lower wing plate (1), upper flange (2) blanking, at first concentrate firepower burns red in edge, and then begin to advance, pace is 1.5 m/mins ~ 2 m/mins, and the cross section arch camber amount of steel plate heating is controlled in 5/1000ths;
Step 2: be assembled into H shaped steel structure;
Lower wing plate (1), upper flange (2) that local heat is good are assembled assembling with web (3), and an arch face of lower wing plate (1) is relative with an arch face of upper flange (2);
Step 3: carry out submerged-arc welding;
The H shaped steel structure that assembles is carried out submerged-arc welding, welding coefficient is electric current 380A, voltage 35V, and the speed of welding of submerged-arc welding is 0.9 m/min ~ 1.2 m/mins, welding sequence is: weld first lower wing plate (1) and web (3), weld upper flange (2) and web (3) again.
2. reversible deformation treatment process before the H shaped steel structure welding as claimed in claim 1 is characterized in that the pace of lower wing plate in the described step 1 (1), upper flange (2) is 1.8 m/mins.
3. reversible deformation treatment process before the H shaped steel structure welding as claimed in claim 1 is characterized in that the speed of welding of submerged-arc welding is 1.16 m/mins in the described step 3.
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| CN201210389476XA CN102990209A (en) | 2012-10-15 | 2012-10-15 | Reversed deformation treatment process before welding of H-shaped steel structures |
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| CN201210389476XA CN102990209A (en) | 2012-10-15 | 2012-10-15 | Reversed deformation treatment process before welding of H-shaped steel structures |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104227182A (en) * | 2014-09-01 | 2014-12-24 | 湖北源盛钢构有限公司 | Process for molding I-steel main welding seam non-back chipping full-penetration I-level component |
| CN104438462A (en) * | 2014-11-05 | 2015-03-25 | 九冶建设有限公司 | Reversible deformation performing method of flange plate welding angular deformation |
| CN104625340A (en) * | 2013-11-07 | 2015-05-20 | 上海宝冶集团有限公司 | Manual welding method of high-strength small-size H-shaped steel |
| CN108890097A (en) * | 2018-09-11 | 2018-11-27 | 华业钢构核电装备有限公司 | A kind of complete penetration welding method of H profile steel component |
| CN113369825A (en) * | 2021-06-30 | 2021-09-10 | 扬州市昌盛车业有限公司 | Welding process for thick plate ceiling of excavator |
| CN114833427A (en) * | 2022-06-08 | 2022-08-02 | 安徽精工钢结构有限公司 | Welding method for column limbs of groove-shaped section of building steel structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0366491A (en) * | 1989-08-04 | 1991-03-22 | Ishikawajima Harima Heavy Ind Co Ltd | Welding method for metallic pipe |
| JPH04220176A (en) * | 1990-03-26 | 1992-08-11 | Sky Alum Co Ltd | Distortion preventive welding method and manufacturing device for panel for structure |
| JPH06277833A (en) * | 1993-02-01 | 1994-10-04 | Sky Alum Co Ltd | Method for welding t-joint panel |
| CN101734557A (en) * | 2009-11-18 | 2010-06-16 | 中冶天工建设有限公司 | Process for manufacturing super-large I-shaped crane beam |
| CN102275033A (en) * | 2011-05-12 | 2011-12-14 | 安徽伟宏钢结构有限公司 | Method of butt welding of steel plates to form deformation-resistant cross column |
| CN202861602U (en) * | 2012-09-18 | 2013-04-10 | 天津市津莆钢结构有限公司 | Gantry type H-shaped steel submerged-arc welding machine |
-
2012
- 2012-10-15 CN CN201210389476XA patent/CN102990209A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0366491A (en) * | 1989-08-04 | 1991-03-22 | Ishikawajima Harima Heavy Ind Co Ltd | Welding method for metallic pipe |
| JPH04220176A (en) * | 1990-03-26 | 1992-08-11 | Sky Alum Co Ltd | Distortion preventive welding method and manufacturing device for panel for structure |
| JPH06277833A (en) * | 1993-02-01 | 1994-10-04 | Sky Alum Co Ltd | Method for welding t-joint panel |
| CN101734557A (en) * | 2009-11-18 | 2010-06-16 | 中冶天工建设有限公司 | Process for manufacturing super-large I-shaped crane beam |
| CN102275033A (en) * | 2011-05-12 | 2011-12-14 | 安徽伟宏钢结构有限公司 | Method of butt welding of steel plates to form deformation-resistant cross column |
| CN202861602U (en) * | 2012-09-18 | 2013-04-10 | 天津市津莆钢结构有限公司 | Gantry type H-shaped steel submerged-arc welding machine |
Non-Patent Citations (4)
| Title |
|---|
| 中国机械工程学会焊接学会: "《焊接手册第3版第1卷：焊接方法及设备》", 30 January 2008 * |
| 张丙尧: "H型钢的焊接", 《河南化工》 * |
| 梁武亭，王丽华: "焊接顺序对拼接工字型钢挠曲变形的影响", 《职业圈》 * |
| 陈祝年: "《焊接工程师手册第2版》", 28 February 2010 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625340A (en) * | 2013-11-07 | 2015-05-20 | 上海宝冶集团有限公司 | Manual welding method of high-strength small-size H-shaped steel |
| CN104227182A (en) * | 2014-09-01 | 2014-12-24 | 湖北源盛钢构有限公司 | Process for molding I-steel main welding seam non-back chipping full-penetration I-level component |
| CN104227182B (en) * | 2014-09-01 | 2016-06-08 | 湖北源盛钢构有限公司 | The moulding process of the main weld seam of joist steel unclear completepenetration I level component |
| CN104438462A (en) * | 2014-11-05 | 2015-03-25 | 九冶建设有限公司 | Reversible deformation performing method of flange plate welding angular deformation |
| CN104438462B (en) * | 2014-11-05 | 2016-05-11 | 九冶建设有限公司 | A kind of reversible deformation method for prefabricating of flange plate Welding Angular Deformation |
| CN108890097A (en) * | 2018-09-11 | 2018-11-27 | 华业钢构核电装备有限公司 | A kind of complete penetration welding method of H profile steel component |
| CN113369825A (en) * | 2021-06-30 | 2021-09-10 | 扬州市昌盛车业有限公司 | Welding process for thick plate ceiling of excavator |
| CN114833427A (en) * | 2022-06-08 | 2022-08-02 | 安徽精工钢结构有限公司 | Welding method for column limbs of groove-shaped section of building steel structure |
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Application publication date: 20130327 |