Welding deformation control method for 120-mm thick plate and 24-mm plate
A control method and welding deformation technology, applied in welding equipment, welding accessories, manufacturing tools, etc., can solve problems such as deformation of the bottom plate and ultra-thick pressure-bearing diaphragm, and achieve the effect of reducing deformation and increasing rigidity
Inactive Publication Date: 2019-03-29
中铁山桥(南通)有限公司
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a method for controlling the welding deformation of a 120mm thick plate and a 24mm plate, which can reduce the problem that serious deformation easily occurs when the box girder top, bottom plate and ultra-thick pressure-bearing diaphragm are welded
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Embodiment Construction
[0011] The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the described examples.
[0012] A 120mm thick plate and 24mm plate welding deformation control method, the specific control method is as follows:
[0013] S1: Setting of roof I-beams: on the upper surface of the roof at the connection between the pressure-bearing partition and the box girder roof, several I-beams with a length of 600mm are arranged at a distance of 500mm to 800mm in the length direction, and 150mm to 200mm in the width direction. And each I-beam is intermittently welded to the top plate of the box girder, and the I-beam is perpendicular to the diaphragm;
[0014] S2: Setting of I-beams on the bottom plate: For the lower surface of the bottom plate at the connection between the pressure-bearing partition and the bottom plate of the box girder, several I-beams with a length of 600mm ...
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The invention relates to a welding deformation control method for a 120-mm thick plate and a 24-mm plate. The welding deformation control method for the 120-mm thick plate and the 24-mm plate is characterised in that the particular control steps are as follows: S1: arrangement of steel I-beams on the top plate; S2: arrangement of steel I-beams on the bottom plate; through space arrangement of thesteel I-beams on the outer surface of the top plate and the bottom plate of a box girder, intermittent welding of the steel I-beams on the surface of the box girder and alternate arrangement on the top plate and the bottom plate of the box girder, the welding deformation control method for the 120-mm thick plate and 24-mm plate increases the rigidity of the free end of the bottom plate, and effectively reduces the deformation of the free end of the bottom plate during the welding process; due to the sequence of separators in the welding process, the stress on the top plate of the box girder and the stress on the bottom plate of the box girder are different; therefore, the steel I-beams on the top plate and the bottom plate of the box girder are welded in different ways to ensure the corresponding welding methods for different strength needs of the top plate and the bottom plate of the box girder.
Description
technical field [0001] The invention relates to the field of plate welding deformation control, in particular to a method for controlling the welding deformation of a 120mm thick plate and a 24mm plate. Background technique [0002] At present, the pressure-bearing partitions at the steel-concrete joint section of large-scale steel box girders are all made of thicker steel plates. The thickness of existing examples has reached 120mm, while the thickness of the top and bottom plates of steel box girders connected with ultra-thick pressure-bearing partitions is generally A relatively thin steel plate of about 24mm, and the length of the free ends of the top and bottom plates is relatively long, about 1000mm. [0003] Considering that the box girder roof, bottom plate and ultra-thick pressure-bearing diaphragm are easily deformed when welding, in addition to controlling the welding parameters including voltage, current, welding speed, number of welding passes, etc., it is also ...
Claims
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IPC IPC(8): B23K9/16B23K9/32
CPCB23K9/16B23K9/32
Inventor 曹东威张国江任晓霞彭湃那宪伟王鹏程
Owner 中铁山桥(南通)有限公司