A kind of butt welding method of thick-walled steel cylinder
A welding method and cylinder technology, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve problems such as the impact of equipment being put into operation, affecting the service life of equipment, and inability to guarantee welding quality, so as to improve work efficiency , The butt gap is uniform, and the effect of ensuring the quality of butt welding
Inactive Publication Date: 2015-08-19
CHINA NO 15 METALLURGICAL CONSTR GRP
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Problems solved by technology
Among them, during the installation process of industrial rotary kiln, non-ferrous metallurgical Osmelt furnace, and other thick-walled tanks, the main part is generally made of thick steel plate coiled into a cylindrical shape. During the butt welding process, the largest The difficulty is to control the amount of misalignment between the two cylinders, control the reserved gap of the weld seam between the two cylinders, and how to perform welding after positioning. If these points are not properly controlled, the welding quality cannot be guaranteed, and it is easy to cause two thick The uneven welding of the wall steel cylinder will affect the later operation of the equipment and affect the service life of the equipment
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[0029] The butt welding method embodiment of the thick-walled steel cylinder of the present invention comprises the following steps:
[0030] Step (1) The step of adjusting the amount of misalignment between the two cylinders with a pressing block;
[0031] Such as figure 1 , 2 , 3, the briquetting block includes a block body 1, a boss 2 is provided below the left half of the block body, and a threaded hole 3 that penetrates up and down is provided on the right half of the block body 1, and a bolt 4 is provided in the threaded hole 3; The boss 2 of the pressing block is a trapezoid with a large upper part and a smaller bottom, and the block body 1 and the boss 2 are integrated.
[0032] Such as Figure 4 As shown, the step (1) is specifically: three to eight briquetting blocks are evenly arranged at the junction of the two cylinders 5, and the lower part of the boss 2 of each briquetting block is welded to the inner side wall of a cylinder 5, The bolts 4 in each threaded h...
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The invention relates to a butt welding method for thick-wall steel cylinders. The method comprises the following steps of: (1) regulating the alignment tolerance between the two cylinders by using a pressure block; (2) regulating the gap between the two cylinders by using a pull rod bolt; (3) fixing the two cylinders by a ride board; and (4) removing the pressure block and the pull rod bolt, welding the cylinders together and removing the ride board. According to the method, the pressure block is used for regulating the butt tolerance between the cylinders, the butt gap between the two cylinders are controlled by the pull rod bolt to ensure that the butted gap is uniform; the two cylinders are fixed by the ride board, so that the regulated effect is not affected by external force; a notch on the ride board prevents manual bottoming and welding from being influenced; and therefore, the butt welding quality of the thick-wall steel cylinders is ensured and the working efficiency is increased.
Description
technical field [0001] The invention relates to a welding method, in particular to a butt welding method for a thick-walled steel cylinder. Background technique [0002] In the practice of a large number of industrial equipment installation projects, limited by construction conditions, some large-scale thick-walled steel cylinder equipment is generally manufactured in parts by the factory, assembled and welded on site. Among them, during the installation process of industrial rotary kiln, non-ferrous metallurgical Osmet furnace, and other thick-walled tanks, the main part is generally made of thick steel plate coiled into a cylindrical shape. During the butt welding process, the largest The difficulty is to control the amount of misalignment between the two cylinders, control the reserved gap of the weld seam between the two cylinders, and how to perform welding after positioning. If these points are not properly controlled, the welding quality cannot be guaranteed, and it i...
Claims
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IPC IPC(8): B23K37/053
Inventor 周志勇郑建国喻红高李汇李冰
Owner CHINA NO 15 METALLURGICAL CONSTR GRP