Manufacturing method of high-strength thick plate steel structure
A production method and high-strength technology, applied in the direction of manufacturing tools, workpiece edge parts, welding equipment, etc., to achieve the effect of saving materials and manpower, ensuring quality and reasonable process
Inactive Publication Date: 2015-12-16
CHINA 22MCC GROUP CORP
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Problems solved by technology
[0006] The present invention aims to solve the above-mentioned problems existing in the processing of existing high-strength thick plate steel structures, and provides a high-strength steel structure with small welding deformation, less welding filling, reducing labor and material waste, improving production efficiency, and reducing production costs. Manufacturing method of thick plate steel structure
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the embodiments do not constitute any limitation to the present invention.
[0019] see image 3 As shown in Fig. 6, a method for manufacturing a high-strength thick plate steel structure includes two processes of opening grooves and welding:
[0020] (1) Beveling: when opening the bevel of the part, the front 3 / 5 plate thickness is opened 40°, and the reverse 2 / 5 plate thickness is opened 50°, see image 3 As shown, the groove opened in this way has a small angle, a small amount of welding filling, and a small deformation; second, the deviation of the groove depth on both sides is also small (difference of 1 / 5 plate thickness), and the welding shrinkage on both sides is basically the same, and the deformation is also the same. , there will be no large inclination angle, see Figure 4 As shown, it is relatively easy to correct.
[0021] (2) Welding...
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The invention relates to a manufacturing method of a steel structure, in particular to a manufacturing method of a high-strength thick plate steel structure. The method comprises the groove forming process and the welding process, wherein in the groove forming process, when grooves of a part are formed during blanking, a 40-degree groove is formed in the three-fifths plate thickness of the front face, a 50-degree groove is formed in the two-fifths plate thickness of the back face, and the depth offset of groove openings of the two sides is one-fifth plate thickness; during welding, sectioned welding is adopted, welding is stopped when weld seams in the two sides of the part are welded to half of the weld seams, correction is conducted on a welded component, backward deformation needs to be corrected out, and after the correction is completed, the part is continuously welded till welding of the weld seams is completed. The manufacturing method of the high-strength thick plate steel structure has the advantages that angles of the groove openings are decreased, the depth offset of the groove opening of the two faces is also decreased, correction is conducted in advance in the welding process, the filling amount and deformation during welding are decreased, the work efficiency of manufacturing is improved, materials and manpower are saved, the quality of high-strength thick plate steel structure manufacturing is guaranteed, and the manufacturing processes are more reasonable.
Description
technical field [0001] The invention relates to a manufacturing method of a steel structure, in particular to a manufacturing method of a high-strength thick plate steel structure. Background technique [0002] The traditional high-strength thick-plate steel structure is manufactured according to the following method: [0003] (1) For normal parts, 2 / 3 of the plate thickness on the front side is opened at 45°, and 1 / 3 of the plate thickness on the back side is opened at 60° when the groove is cut, such as figure 1 As shown, the groove opened in this way: first, the angle is large, the amount of welding filling is large, and the deformation is also large; second, the deviation of the groove depth on both sides is also large (difference of 1 / 3 plate thickness), and the thicker the plate, the greater the difference. As a result, the inclination of the plate after the component is welded is relatively large (the welding deformation on both sides is different, the side with the ...
Claims
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Login to View More IPC IPC(8): B23K33/00B23K31/00B23K103/04
CPCB23K33/004B23K31/003B23K2103/04
Inventor 陈宇斌
Owner CHINA 22MCC GROUP CORP