Method for welding trunnions and fan-shaped bodies of backing rings of large converters
A large-scale converter and welding method technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of large welding deformation of the trunnion and the sector body, and difficulty in controlling the coaxiality of the trunnion, so as to ensure the welding quality, Effects of welding distortion and trunnion concentricity control
Active Publication Date: 2014-03-26
ANHUI MASTEEL ENG & TECH GRP
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Problems solved by technology
[0002] In the field assembly and welding stage of large-scale converter support ring production, the control of welding deformation during the welding process of the trunnion and the sector plays a key role in ensuring the coaxiality of the trunnion; , the welding deformation of the trunnion and the fan-shaped body is large during the welding process, and it is difficult to control the coaxiality of the trunnion
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[0015] Referring to the accompanying drawings, a large-scale converter support ring trunnion and fan-shaped body welding method, the technical scheme is as follows:
[0016] The first step: the trunnions 2 on both sides of the support ring are assembled at the same time; the laser collimator 4 is set on the trunnion to be installed through the flange bracket 5, and three groups of percentages are set at 9 o'clock, 12 o'clock and 15 o'clock along the center of the trunnion Tables C2, C3 and C1;
[0017] Step 2: adopt large-size and large-thickness positioning reinforcement welding, divide the trunnion and fan-shaped body 3 evenly into seven sections d, c, b, a, b, c, d, and connect them into an overall welding through point-like positioning. Seam, the size of each positioning point is determined according to different plate thickness and component size, the thickness of the welding seam at the positioning point is 2 / 3 of the plate thickness; if the assembly gap of the welds on ...
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The invention discloses a method for welding trunnions and fan-shaped bodies of backing rings of large converters. The technical scheme includes that the method comprises a first step, simultaneously welding two side trunnions of a backing ring; a second step, performing large-size large-thickness positioning reinforcing welding on the two side trunnions; a third step, finishing positioning welding when the thicknesses of weld joints are basically equal to two-third of the thickness of a plate; a fourth step, adjusting welding sequences to control movement and deformation of the trunnions. When the thicknesses of the weld joints are basically equal to two-third of the thickness of the plate, deformation magnitudes can be reduced, and contraction deformation is stable during symmetry welding. The method for welding the trunnions and the fan-shaped bodies of the backing rings of the large converters has the advantages that welding deformation and the coaxiality of the trunnions can be assuredly effectively guaranteed in trunnion and fan-shaped body welding procedures when the trunnions of the backing rings of the large converters are welded and manufactured, and the welding quality can be guaranteed.
Description
technical field [0001] The invention belongs to a welding process for auxiliary equipment of a large-scale converter, in particular to a method for welding a trunnion of a support ring of a large-scale converter and a fan-shaped body. Background technique [0002] In the field assembly and welding stage of large-scale converter support ring production, the control of welding deformation during the welding process of the trunnion and the sector plays a key role in ensuring the coaxiality of the trunnion; , The welding deformation of the trunnion and the fan-shaped body is large during the welding process, and it is difficult to control the coaxiality of the trunnion. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a welding method between the trunnion and sector body of the large-scale converter support ring, which ensures that the welding deformation and the coaxiality of the trunnion are effectively cont...
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Login to View More IPC IPC(8): B23K31/02B23K37/00
CPCB23K31/02
Inventor 张烨傅多智李尊善张汪林
Owner ANHUI MASTEEL ENG & TECH GRP