CN105328308A - Welding method for heavy U steel - Google Patents
Welding method for heavy U steel Download PDFInfo
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- CN105328308A CN105328308A CN201410399030.4A CN201410399030A CN105328308A CN 105328308 A CN105328308 A CN 105328308A CN 201410399030 A CN201410399030 A CN 201410399030A CN 105328308 A CN105328308 A CN 105328308A
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Abstract
The invention relates to a welding method for heavy U steel. The welding method comprises the steps that in-channel supports are arranged on the inner sides of wing plates of the U steel in a point fixed manner respectively; carbon dioxide arc welding generating the minimum welding deformation is used for carrying out backing welding on the in-channel supports and the wing plates of the U steel; and then cosmetic welding is carried out. The situation that bending and torsion deformation caused by longitudinal and transverse shrinkage contraction in the manufacturing and welding process of the structure of the heavy U steel is caused, and consequently waste is generate is avoided. The postwelding flame correction cost is reduced, and production efficiency is improved.
Description
Technical field
The present invention relates to a kind of welding method of Steel section member.
Background technology
［ shape U-steel, its cross section is 1 meter × 0.5 meter × 22 meters, thick 40 millimeters, heavily about 13 tons, cannot process by the method for mechanical compaction, can only process by the mode of welding.But in welding process, component there will be the contraction of component vertical and horizontal and causes bending to be out of shape, and can produce waste product, postwelding also needs to carry out flame correction, adds postwelding flame correction cost, and production efficiency is not high.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide one and prevent heavy type from ［ being shunk by the component vertical and horizontal that there will be in shape structure steel fabrication and welding process and the bending distortion that causes, thus producing waste product.The few postwelding flame correction cost of Minus, enhances productivity.
The present invention is achieved by the following technical solutions:
A kind of method for welding heavy-duty trough-type steel, puts groove inner support respectively and is fixed in ［ the inner side of shaped steel wing plate; This method for welding heavy-duty trough-type steel adopts the carbon dioxide gas arc welding producing welding deformation amount minimum to carry out backing welding, then carries out cosmetic welding.
A kind of method for welding heavy-duty trough-type steel, described cosmetic welding concrete operation method is as follows:
(1) be testpieces according to previous first done component, carry out measuring to testpieces and obtain the deflection that this component welds generation in its natural state; (2) by identical two pieces through backing welding ［ shaped steel, is combined into-individual square opening shape, and then with limited block, ［ shaped steel two ends side is fixed, and ［ shaped steel is integrated to make two by two respectively; (3) supporting seat is fixed to the upper and lower both sides, center in component length direction, and described jack is positioned in the middle part of supporting seat, carry out jacking and prepare; (4) according to the deflection measured from testpieces, then be multiplied by the coefficient of 1.5 ~ 2 times, be the spacing that jack needs to eject; (5) when after jacking Gong Zuo Jie Bouquet, namely available gate double wire hidden arc welding welds two, upper end weld seam simultaneously, another two weld seams are welded with above same method after postwelding carries out once inside out, when component is cooled to room temperature, jack is removed after Han Jie Jie Bouquet, after supporting seat, groove inner support, limited block being removed simultaneously, namely the degree of lip-rounding is reduced to ［ shape.
A kind of method for welding heavy-duty trough-type steel, described measurement obtains this component and welds the concrete measuring method of the deflection of generation in its natural state for be tightened in channel-section steel web center line two ends with finer wire, measures sagitta with steel ruler in center line midpoint.
The present invention is for preventing angular deformation, and concrete welding equipment order is; Adopt rigid fixation; Described groove inner support is put respectively and is fixed in that ［ inner side of shaped steel wing plate, object prevents the ［ angular deformation in the inner side that shaped steel likely produces and outside in welding process.In order to improve weld appearance quality, cosmetic welding have selected double wire hidden arc welding.Because submerged arc welding deflection is large, in welding process, weld seam produces longitudinal contraction, causes component to produce deflection deformation.For preventing the generation of deflection deformation, have selected prestrain method, namely mentioned in technical scheme cosmetic welding concrete steps.The present invention can effectively prevent heavy type from ［ being shunk by the component vertical and horizontal that there will be in shape structure steel fabrication and welding process and the bending distortion that causes and produce waste product.The few postwelding flame correction cost of Minus, enhances productivity.
Accompanying drawing explanation
Fig. 1 is the present invention's ［ Steel section member structural representation.
Fig. 2 is the structural representation of Member Welding component of the present invention and assistive device.
Fig. 3 is the A-A sectional view of Fig. 2.
Detailed description of the invention
Shown in accompanying drawing 1,2,3.
For preventing angular deformation, concrete welding equipment order is; 1. rigid fixation is adopted; Described groove Inner is supported (4) and is fixed in ［ the Inner side of shaped steel wing plate (6) respectively.Object prevents ［ the Inner side that shaped steel likely produces and the angular deformation in outside in welding process.
Carry out backing welding: welding method adopts and produces the minimum carbon dioxide gas arc welding of welding deformation amount.
Carry out cosmetic welding: in order to improve weld appearance quality, cosmetic welding have selected double wire hidden arc welding.Because submerged arc welding deflection is large, in welding process, weld seam produces longitudinal contraction, causes component to produce deflection deformation.For preventing the generation of deflection deformation, have selected prestrain method.Concrete operation method for: be 1. testpieces according to our previous first done component, carry out measuring to testpieces and obtain the deflection (concrete measuring method, for be tightened in channel-section steel web center line two ends with finer wire, measures sagitta with steel ruler in center line midpoint) that this component welds generation in its natural state.2. by identical two pieces through backing welding ［ shaped steel, is combined into-individual square opening shape, and ［ shaped steel two ends side is fixed, and ［ shaped steel is integrated to make two by two respectively then to use described limited block (5).3. described supporting seat (3) is fixed to the upper and lower both sides, center in component length direction, and described jack (2) is positioned over described supporting seat (3) middle part, carry out jacking and prepare.4. according to after the deflection that testpieces is measured, then be multiplied by the coefficient of 1.5 ~ 2 times, be the spacing that described jack (2) needs to eject.5. after jacking work makes knot Bouquet, namely available gate double wire hidden arc welding welds two, upper end weld seam simultaneously, welds another two weld seams after postwelding carries out once inside out with above same method.When component is cooled to room temperature, jack (2) is removed, after described supporting seat (3), groove inner support (4), limited block (5) being removed, namely mouth (side) shape is reduced to simultaneously ［ shape, essentially no bending distortion after Han Jie Jie Bouquet.
Claims (2)
1. a method for welding heavy-duty trough-type steel, puts groove inner support respectively and is fixed in ［ the inner side of shaped steel wing plate; This method for welding heavy-duty trough-type steel adopts the carbon dioxide gas arc welding producing welding deformation amount minimum to carry out backing welding, then carries out cosmetic welding; It is characterized in that described cosmetic welding concrete operation method is as follows:
(1) be testpieces according to previous first done component, carry out measuring to testpieces and obtain the deflection that this component welds generation in its natural state; (2) by identical two pieces through backing welding ［ shaped steel, is combined into-individual square opening shape, and then with limited block, ［ shaped steel two ends side is fixed, and ［ shaped steel is integrated to make two by two respectively; (3) supporting seat is fixed to the upper and lower both sides, center in component length direction, and jack is positioned in the middle part of supporting seat, carry out jacking and prepare; (4) according to the deflection measured from testpieces, then be multiplied by the coefficient of 1.5 ~ 2 times, be the spacing that jack needs to eject; (5) when after jacking Gong Zuo Jie Bouquet, namely available gate double wire hidden arc welding welds two, upper end weld seam simultaneously, another two weld seams are welded with above same method after postwelding carries out once inside out, when component is cooled to room temperature, jack is removed after Han Jie Jie Bouquet, after supporting seat, groove inner support, limited block being removed simultaneously, namely the degree of lip-rounding is reduced to ［ shape.
2. a kind of method for welding heavy-duty trough-type steel according to claim 1, it is characterized in that described measurement obtains this component and welds the concrete measuring method of the deflection of generation in its natural state for be tightened in channel-section steel web center line two ends with finer wire, measure sagitta with steel ruler in center line midpoint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399030.4A CN105328308A (en) | 2014-08-14 | 2014-08-14 | Welding method for heavy U steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399030.4A CN105328308A (en) | 2014-08-14 | 2014-08-14 | Welding method for heavy U steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105328308A true CN105328308A (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410399030.4A Pending CN105328308A (en) | 2014-08-14 | 2014-08-14 | Welding method for heavy U steel |
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| CN (1) | CN105328308A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515495A (en) * | 2020-05-20 | 2020-08-11 | 贵州建工集团第一建筑工程有限责任公司 | Method for manufacturing steel structure layer beam of high-rise building |
| CN114918600A (en) * | 2022-03-29 | 2022-08-19 | 黑龙江省龙建龙桥钢结构有限公司 | Anti-deformation bed-jig of steel box girder bridge panel outer welding intelligence system |
-
2014
- 2014-08-14 CN CN201410399030.4A patent/CN105328308A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515495A (en) * | 2020-05-20 | 2020-08-11 | 贵州建工集团第一建筑工程有限责任公司 | Method for manufacturing steel structure layer beam of high-rise building |
| CN114918600A (en) * | 2022-03-29 | 2022-08-19 | 黑龙江省龙建龙桥钢结构有限公司 | Anti-deformation bed-jig of steel box girder bridge panel outer welding intelligence system |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160217 |