Deformation control in manufacturing of ultra-high strength steel structure
An ultra-high-strength steel, deformation control technology, applied in the field of deformation control, can solve problems such as troublesome production, difficulty, not allowing fire attack correction, etc., to achieve the effect of ensuring the pass rate, good pass rate, and reducing deformation
Inactive Publication Date: 2011-08-10
南通中集太平洋海洋工程有限公司
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Problems solved by technology
At present, the use of ultra-high-strength steel is not very popular in China and it is difficult to collect such core technologies. Therefore, few domestic units have done targeted research on the control of welding and deformation in the process of structural manufacturing. Fire attack correction is not allowed during the production process, and mechanical correction is basically impossible for large structural parts, which brings a lot of trouble to the production
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Embodiment Construction
[0011] The deformation control in the manufacture of the ultra-high-strength steel structure of the present invention includes the control of the blanking stage, the control of the assembly stage of the box girder structure, and the control of the welding stage. The control of the blanking stage: the panel of the box girder is set when blanking A number of raised small pieces are cut, and the CNC cutting method is used when cutting the material. First, the gap between the two raised small pieces is cut off, and then the semi-automatic method is used to cut from the middle of the raised small pieces to form a The panel of raised small pieces, the interval between two raised small pieces is 1 meter, the length of raised small pieces is 150 mm, and the width is 20 mm; the control of the assembly stage of the box girder structure: two box girders are used The panels are positioned together back to back, first draw the position line of the partition on the panel, and position the pa...
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Abstract
The invention relates to deformation control in the manufacturing of an ultra-high strength steel structure, which comprises the control of the blanking stage, the control of the assembly stage of a box girder structure and the control of the welding stage, wherein the control of the blanking stage is as follows: arranging a plurality of raised small blocks when blanking a panel of a box girder, adopting the numerical control cutting method during blanking, firstly cutting off a gap between two raised small blocks, then using the semi-automatic method to cut open from the middle position of the raised small blocks and finally forming the panel with the raised small blocks. The deformation control has the advantages of effectively reducing the deformation of ultra-high strength steel during the manufacturing, well ensuring the product qualification rate and summarizing technical experiences for large-scale use of the ultra-high strength steel manufacturing structure.
Description
technical field [0001] The invention relates to deformation control in the manufacture of ultra-high-strength steel structures. Background technique [0002] In the crane structures of large floating cranes and marine engineering, box girder structures are often designed, especially the jib (boom), which is the most important load-bearing part of the crane structure. There are many box-shaped girder structures in the boom of cranes with a rated lifting capacity above 2000T. A crane has a box-shaped structural beam of about 500 meters. As the future trend of cranes is that the weight of the fuselage is getting lighter and the lifting capacity is getting higher and higher. Large, so ultra-high-strength steel with a yield strength of 690 MPa and above has become the first choice. At present, the use of ultra-high-strength steel is not very popular in China and it is difficult to collect such core technologies. Therefore, few domestic units have done targeted research on the co...
Claims
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IPC IPC(8): B23P15/00
Inventor 刘喜锋陈思远冯金艳茅柳柳
Owner 南通中集太平洋海洋工程有限公司