Gouging-free welding method and welding platform for welding web plate and flange of H-shaped steel
A technology of welding platform and welding method, which is applied in the direction of welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of large welding deformation, etc., and achieve the effects of reducing production cost, reducing labor consumption, and reducing the amount of filler metal
Inactive Publication Date: 2012-12-05
中国能源建设集团江苏省电力建设第三工程有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a welding method and welding platform for welding H-shaped steel webs and flanges without root cleaning, so as to solve the technical problems of root cleaning and large welding deformation during the welding of H-shaped steel.
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Embodiment Construction
[0018] Press the first step figure 1 To process the web groove, the oxyacetylene automatic cutter is used to process the web groove into a K-shaped groove, the blunt edge is 4~5mm, and the groove angle is 55 degrees.
[0019] The second step is to assemble the H-beam, and place the assembled H-beam on the press figure 2 On the designed welding platform, the angle β of the welding platform is 55~60 degrees, and the angle between the groove surface and the submerged arc welding wire is actually 20~25 degrees;
[0020] The third step is to adjust the welding process parameters of submerged arc automatic welding, and select the welding process parameters that meet the requirements for welding. During the welding process, according to the requirements of multi-layer multi-pass welding, the H-beam is turned over in time, and symmetrical welding is performed on both sides of the weld. until the welding is completed.
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The invention discloses a gouging-free welding method and a welding platform for welding a web plate and a flange of H-shaped steel and relates to the technical field of welding construction, in particular to the field of construction of T-shaped welding lines. The technical problems that the gouging is required and the welding deformation is large in the process of welding the web plate and the flange when the welded H-shaped steel is manufactured are solved. A welded joint of the web plate is designed into a K-shaped groove, the angle of the groove is designed to be 55 degrees, and the angle of the welding platform is designed to be 55 to 60 degrees. The welding platform is suitable for manufacturing and welding the welded H-shaped steel of which the thickness of the web plate is 16 to 50mm, and the technical problems that reverse gouging is required and large angular deformation is generated between the flange and the web plate in the process of welding the web plate and flange of the H-shaped steel are solved. The welding platform is easy and convenient to operate and easy to popularize, and the manufacturing cost is reduced.
Description
technical field [0001] The invention relates to the technical field of welding construction, in particular to a root cleaning-free welding method and a welding platform for welding H-shaped steel webs and wing plates. Background technique [0002] According to the steel structure welding GB50205-2001 standard, the quality grade of the welding seam of the H-shaped steel T-joint is one or two, and full penetration is required. At present, when producing H-beams with welding quality grades one or two, the traditional process generally uses single V-shaped groove welding, the groove angle is 45-50 degrees, the angle of the welding platform is 45 degrees, and the reverse side of the V-shaped weld is adopted. Carbon arc gouging welding process. The disadvantages of this welding process are: 1. The groove surface is basically parallel to the submerged arc welding wire, and the deviation between the welding wire and the middle line of the groove angle is relatively large, resulting...
Claims
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Login to View More IPC IPC(8): B23K9/18B23K37/04B23K33/00
Inventor 张冬庆
Owner 中国能源建设集团江苏省电力建设第三工程有限公司