Process centralized assembly line that can improve the rolling quality of pipeline steel
A centralized and pipeline steel technology, which is applied in the field of pipeline steel rolling, can solve the problems that the quality of pipeline steel rolling is greatly affected
Active Publication Date: 2021-09-14
CHONGQING TECH & BUSINESS UNIV
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Problems solved by technology
[0004] In view of this, the present invention provides a process centralized assembly line capable of improving the rolling quality of pipeline steel, so as to solve the technical defect in the prior art that welded joints have a great influence on the rolling quality of pipeline steel
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[0032] The present invention will be further described below in conjunction with embodiment and accompanying drawing.
[0033] Such as figure 1 , 2 , 5 and 7, a process centralized assembly line that can improve the rolling quality of pipeline steel, on the work platform A of the assembly line, a welding device 1, a bracket group 2 and at least two rolling units 3 are arranged in sequence, wherein A grinding wheel vehicle 4 and a high-frequency heating box 5 are arranged on the bracket group 2 . The welding device 1 performs friction welding on two pieces of steel section a, and the two pieces of steel section a are welded into one and then transferred to the bracket group 2 as a whole, and then the grinding wheel car 4 at the position of the bracket group 2 grinds the weld d, and the high The frequency heating box 5 heats the welding area, then the pipeline steel is naturally cooled, and finally the heat-treated pipeline steel is sent to the rolling unit 3 for multi-stage r...
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Abstract
The invention discloses a process centralized assembly line capable of improving the rolling quality of pipeline steel. A welding device, a bracket group and at least two stages of rolling units are arranged in sequence on the working platform; Install the reciprocating middle friction table on the base, and the left support platform and the right support platform which are movably arranged on both sides of the middle friction table. Fixed structure, the inside of the installation base is provided with a pressure driving mechanism, which is used to force the left support platform and the right support platform to be close to the middle friction platform; High-frequency heating box in the welding area. The beneficial effects of the invention are: after rolling, the grain size of each region tends to be consistent, and manufacturing defects such as blistering, shrinkage porosity, and cracks do not occur at the welding seam position, and the rolling quality of the pipeline steel is significantly improved.
Description
technical field [0001] The invention belongs to the technical field of pipeline steel rolling, and in particular relates to a process centralized assembly line capable of improving the rolling quality of pipeline steel. Background technique [0002] Pipeline steel is the most typical type of steel among microalloy steels. Specifically, it refers to a type of steel with special requirements used in pipelines for transporting oil and natural gas. It is produced by a steel coil rolling mill or a medium and heavy plate rolling mill, and is formed into a large-diameter steel pipe by spiral welding or UOE straight seam welding. [0003] In the forming process of pipeline steel, the rolling process is the most widely used. In the existing technology, the principle of process dispersion is generally adopted in the rolling of pipeline steel to arrange the assembly line. However, there are many defects in the current welding method, which will adversely affect the subsequent producti...
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IPC IPC(8): B23P23/00B23K20/12B21C37/08
CPCB21C37/08B23K20/12B23P23/00
Inventor 梁强王敬
Owner CHONGQING TECH & BUSINESS UNIV