CN101428373A - Weld mouth structure of steel tube weld - Google Patents
Weld mouth structure of steel tube weld Download PDFInfo
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- CN101428373A CN101428373A CNA2007101770719A CN200710177071A CN101428373A CN 101428373 A CN101428373 A CN 101428373A CN A2007101770719 A CNA2007101770719 A CN A2007101770719A CN 200710177071 A CN200710177071 A CN 200710177071A CN 101428373 A CN101428373 A CN 101428373A
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Abstract
The invention provides a welding bore structure for welding a steel pipe, the welding bore structure comprises a steel plate and a symmetrical X-type groove; wherein, the X-type groove is formed at two corresponding welding points of the steel plate, half of X-type grooves which are respectively formed at two corresponding welding points of the steel plate are butted and formed, the butting position of the groove adopts the root face, the gap between two root faces adopts the root gap, the angle of the groove included angle is 60 degrees plus or minus 5 degrees, and the distance from the middle point of the root face to the surface of the steel plate is half of thickness of the steel plate. The invention has the advantages that the thickness of the root face is 3 to 5 mm; and the root gap is 0 to 1 mm; therefore, the design of the welding bore structure is reasonable, the welding sequence can be reduced, the welding materials are saved, the welding efficiency and the welding quality are enhanced, the welding cost is reduced, and the work environment is optimized to ensure the healthy body of the operating personnel.
Description
Technical field
The weld bond that the present invention relates to weld, relate in particular to a kind of ocean engineering jacket and chunk of being used for and build in the welding engineering in the steel pipe welding sequence, can reduce welding sequence, save welding material, reduce cost, improve the weld bond structure of the steel pipe welding of welding quality and operating efficiency.
Background technology
It is an operation commonly used in a lot of engineerings that steel pipe rolls, general diameter is that the steel pipe more than 406 millimeters all adopts steel pipe to roll and spreading, therefore, steel pipe rolls with the workload of spreading very greatly in the various engineerings, and steel pipe rolls the quality that quality and efficient with spreading all can directly have influence on engineering.Such as, in ocean engineering, steel pipe rolls with spreading will account for about 40% of whole jacket construction work amount, accounts for about 15% of chunk construction work amount.And in ocean engineering, it is the first step of overall structure construction that steel pipe rolls with spreading, and its operating efficiency and quality directly have influence on the construction progress and the quality of steel construction in the whole ocean engineering.
It mainly is to finish by welding procedure that steel pipe rolls with spreading.Welding procedure comprises the weld bond structure Design of welding and the setting of welding parameter.The weld bond structure of existing steel pipe welding as shown in Figure 1, comprises steel plate, symmetrical X-type groove; This X type groove is provided in a side of steel plate two corresponding welds, the 1/2X type groove butt joint that is provided with respectively by steel plate two corresponding welds constitutes, the groove joint is a root face 2, gap between two root faces 2 is a root gap 3, the angle of groove angle 1 is 60 degree ± 5 degree, root face 2 mid points are 1/2 of steel plate thickness to the distance of surface of steel plate, and its root face height is 1 to 2 millimeter, and root gap 3 is 2 to 4 millimeters.The weld bond structural design of this welding is unreasonable, and its root face length is provided with less, and root face mid point to the distance 4 of surface of steel plate is 1/2 of a steel plate thickness, causes the groove area bigger, causes the generation wlding amount of expending big; In addition, because the root gap setting is bigger, make welding sequence more, need comprise the inboard back cover of groove, inboard 2.4 mm dia welding wire submerged-arc weldings, inboard 4.0 mm dia welding wire submerged-arc weldings, groove outside back chipping and steps such as polishing and the outside 4.0 mm dia welding wire submerged-arc weldings are because step is many, therefore loaded down with trivial details and operating efficiency is low, groove burns when occurring the welding front easily in the welding process, the lack of penetration phenomenon of root face during the welding reverse side, thus influence welding quality; Moreover because of the root gap setting is bigger, backing run need carry out gouge to be removed, and cause the waste of welding material, and behind the gouge, the channeling angle is less, and the postwelding scarfing cinder is difficulty relatively; Also have, noise is very big during gouge, can produce volume of smoke simultaneously, and working environment is relatively poor, influences the healthy of operating personnel.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that existing product exists, and the weld bond structure that provides a kind of steel pipe to weld, its weld bond reasonable in design, can reduce welding sequence, save welding material, improve welding efficiency and quality, reduce welding cost, and the optimization working environment, the assurance operating personnel's is healthy.
The objective of the invention is to realize by following technical scheme.
The weld bond structure of steel pipe welding of the present invention comprises steel plate, symmetrical X-type groove; This X type groove is provided in a side of steel plate two corresponding welds, the 1/2X type groove butt joint that is provided with respectively by steel plate two corresponding welds constitutes, the groove joint is a root face, gap between two root faces is a root gap, the angle of groove angle is 60 degree ± 5 degree, and root face mid point to the distance of surface of steel plate is 1/2 of a steel plate thickness; It is characterized in that described root face height is 3 to 5 millimeters; Described root gap is 0 to 1 millimeter.
The beneficial effect of the weld bond structure of steel pipe welding of the present invention is, the weld bond reasonable in design of this steel pipe welding, can reduce welding sequence, only needing to carry out submerged-arc welding in the double-edged groove of steel plate gets final product, save steps such as the inboard back cover of groove, inboard 2.4 mm dia welding wire submerged-arc weldings, groove outside back chipping and polishing in the prior art, save man-hour and source of the gas, reduce production costs, make welding efficiency promote about 49%, and the optimization working environment, the assurance operating personnel's is healthy; Have again,, therefore can effectively reduce the use amount of welding material, can save welding material about 35% owing to the minimizing of groove area and dwindling of root gap.
Description of drawings:
Fig. 1 is the weld bond structural representation of existing steel pipe welding.
Fig. 2 is the weld bond structural representation of steel pipe welding of the present invention.
Major label description in figure: 1 groove angle, 2 root faces, 3 root gaps, 4 root face mid points are to distance, A steel plate front, the B steel plate reverse side of surface of steel plate.
The specific embodiment
Consult shown in Figure 2ly, the weld bond structure of steel pipe of the present invention welding comprises steel plate, symmetrical X-type groove; This X type groove is provided in a side of steel plate two corresponding welds, the 1/2X type groove butt joint that is provided with respectively by steel plate two corresponding welds constitutes, the groove joint is a root face 2, gap between two root faces 2 is a root gap 3, the angle of groove angle 1 is 60 degree ± 5 degree, and root face 2 mid points to the distance of surface of steel plate is 1/2 of a steel plate thickness; Its improvements are that root face 2 thickness are 3 to 5 millimeters, and root gap 3 is 0 to 1 millimeter.
The weld bond structure of steel pipe welding of the present invention, its groove root gap narrows down to 0 to 1 millimeter, and root face height is increased to 3 to 5 millimeters, and the area of bevel for welding is compared with existing steel pipe bevel for welding area like this, can reduce about 30%.Because the minimizing of groove area and dwindling of root gap, therefore can reduce the use amount of welding material, save welding material about 35%, reduce welding sequence, only need to carry out submerged-arc welding in the double-edged groove of steel plate and get final product, save steps such as the inboard back cover of groove, inboard 2.4 mm dia welding wire submerged-arc weldings, groove outside back chipping and polishing in the prior art, save man-hour and source of the gas, reduce production costs, make welding efficiency promote about 49%.
The weld bond structure of steel pipe welding of the present invention can also be avoided burning groove when welding is positive, and the welding reverse side can guarantee not occur lack of penetration phenomenon with the root face penetration, improves welding quality, makes the cold impact value of weld part can reach 34J (40 ℃).
Embodiment 1:
Select the steel plate (perhaps providing the steel plate model) of 10 millimeters thick, roll into tubular body, then the corresponding weld of steel plate is arranged to the groove of 1/2X type respectively, the thickness of the root face 2 of groove joint is made as 5 millimeters, the angle of groove angle 1 is 60 degree, root gap 3 is made as 1 millimeter, and root face mid point to the distance of surface of steel plate is 5 millimeters.During welding, adopting diameter is that 4 millimeters welding wire carries out submerged-arc welding in the groove of steel plate front surface A, then, is that 4 millimeters welding wire carries out submerged-arc welding with same diameter in the groove of steel plate reverse side B, can finish welding job.Weld part is tested through procedure qualification, meets the CCS required standard, and its mechanical performance satisfies the requirement of ocean engineering steel construction mechanical performance, reaches the standard of low-temperature impact temperature-40 ℃.
Embodiment 2:
It is being 1710 millimeters to caliber, wall thickness is that 32 millimeters steel pipe carries out the spreading welding, be arranged to the groove of 1/2X type respectively at the corresponding weld of steel pipe, the thickness of the root face of groove joint is made as 4 millimeters, the angle of groove angle is 60 degree, root gap is made as 0.5 millimeter, and root face mid point to the distance of surface of steel plate is 16 millimeters.During welding, adopting diameter is that 4 millimeters welding wire carries out submerged-arc welding in the groove of steel pipe front surface A, then, is that 4 millimeters welding wire carries out submerged-arc welding with same diameter in the groove of steel pipe reverse side B, can finish the butt joint welding job, and be 152 minutes weld interval.
The experiment effect contrast, the steel pipe that adopts traditional welding weld bond structure that embodiment 2 is selected for use carries out the spreading welding, because the welding sequence step is many, needs 245 minutes time; Have again, the root face of traditional welding weld bond structure is little, root gap is big, so the groove area is bigger than the groove area that the present invention welds the weld bond structure, root gap is also big, and through experiment relatively, the new construction of the big root face steel of the present invention pipe welding weld bond is compared with the weld bond structure of conventional steel tubulation welding, can save welding material about 35%, effectively reduce cost.
The advantage of the weld bond new construction of steel pipe of the present invention welding is, can all adopt submerged-arc welding at the lateral surface and the medial surface of steel plate, reduced the gouge operation simultaneously, therefore compares with traditional handicraft, can save the time more than 40%; Such as, steel pipe to 32 millimeters wall thickness, carry out the welding of 3 meters longitudinal joints, if adopt traditional welding weld bond structure to need 136 minutes time, and adopt the weld bond new construction of big root face steel pipe welding of the present invention only to need 80 minutes, can save 56 minutes, and comprise the swing pipe 20 minutes time of transhipment of saving again, welding efficiency can improve about 49%.In addition, because the minimizing of groove area of the present invention, the weld bond new construction of this steel pipe welding can significantly reduce the consumption of welding material, and the weld bond new construction of big root face steel pipe welding is compared with the weld bond structure of conventional steel tubulation welding, can save welding material about 35%.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (1)
1, a kind of weld bond structure of steel pipe welding comprises steel plate, symmetrical X-type groove; This X type groove is provided in a side of steel plate two corresponding welds, the 1/2X type groove butt joint that is provided with respectively by steel plate two corresponding welds constitutes, the groove joint is a root face, gap between two root faces is a root gap, the angle of groove angle is 60 degree ± 5 degree, and root face mid point to the distance of surface of steel plate is 1/2 of a steel plate thickness; It is characterized in that described root face height is 3 to 5 millimeters; Described root gap is 0 to 1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101770719A CN101428373A (en) | 2007-11-09 | 2007-11-09 | Weld mouth structure of steel tube weld |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101770719A CN101428373A (en) | 2007-11-09 | 2007-11-09 | Weld mouth structure of steel tube weld |
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| CN101428373A true CN101428373A (en) | 2009-05-13 |
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| CNA2007101770719A Pending CN101428373A (en) | 2007-11-09 | 2007-11-09 | Weld mouth structure of steel tube weld |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294552A (en) * | 2011-08-08 | 2011-12-28 | 胜利油田龙玺石油钢管有限公司 | Anti-ice marine riser welding method |
| CN103658926A (en) * | 2013-11-25 | 2014-03-26 | 唐山轨道客车有限责任公司 | Pipe-pipe butt joint system and construction method of pipe-pipe butt joint system |
| CN106041309A (en) * | 2015-04-14 | 2016-10-26 | 中国十九冶集团有限公司南京分公司 | A kind of welding method of Q420 high strength steel |
| CN107876941A (en) * | 2016-09-29 | 2018-04-06 | 海阳中集来福士海洋工程有限公司 | Steel plate buried arc welding method |
| CN108436320A (en) * | 2018-05-28 | 2018-08-24 | 湖北天图桥梁技术研究有限公司 | A kind of U ribs and orthotropic plate unit and its welding manufacture method |
-
2007
- 2007-11-09 CN CNA2007101770719A patent/CN101428373A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294552A (en) * | 2011-08-08 | 2011-12-28 | 胜利油田龙玺石油钢管有限公司 | Anti-ice marine riser welding method |
| CN103658926A (en) * | 2013-11-25 | 2014-03-26 | 唐山轨道客车有限责任公司 | Pipe-pipe butt joint system and construction method of pipe-pipe butt joint system |
| CN106041309A (en) * | 2015-04-14 | 2016-10-26 | 中国十九冶集团有限公司南京分公司 | A kind of welding method of Q420 high strength steel |
| CN107876941A (en) * | 2016-09-29 | 2018-04-06 | 海阳中集来福士海洋工程有限公司 | Steel plate buried arc welding method |
| CN107876941B (en) * | 2016-09-29 | 2020-08-28 | 海阳中集来福士海洋工程有限公司 | Submerged arc welding method for steel plate |
| CN108436320A (en) * | 2018-05-28 | 2018-08-24 | 湖北天图桥梁技术研究有限公司 | A kind of U ribs and orthotropic plate unit and its welding manufacture method |
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Open date: 20090513 |