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A method and device for online adjustment of weld opening angle of pipeline steel pipe

An adjustment method and an opening angle technology, applied in the field of on-line adjustment of the opening angle of pipeline steel pipe welds, can solve problems such as waste, increased production costs, time-consuming and labor-intensive problems

Active Publication Date: 2021-04-16
河北志航管道装备制造股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional pipeline steel pipe sheet and strip forming often uses a single large integrated roll. When a part of the roll is severely worn, replacing the roll as a whole is not only time-consuming and laborious, but also causes great waste and increases production costs.

Method used

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  • A method and device for online adjustment of weld opening angle of pipeline steel pipe
  • A method and device for online adjustment of weld opening angle of pipeline steel pipe
  • A method and device for online adjustment of weld opening angle of pipeline steel pipe

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Experimental program
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Effect test

Embodiment 1

[0043] In this embodiment, eight roll pairs are set, and along the circumferential direction of the pipeline steel pipe from the weld, they are the first roll pair 2, the second roll pair 3, the third roll pair 4, the fourth roll pair 5, and the fifth roll pair. The roll pair 6, the sixth roll pair 7, the seventh roll pair 8, and the eighth roll pair 9, and the eight roll pairs are in the same radial plane of the pipeline steel pipe.

[0044] by Take the second-pass forming of the fine forming stage of the pipeline steel pipe 14 strip forming process as an example. The working process of the device is roughly as follows: Before the pipeline steel pipe 14 strip is formed, input the strip width 760 mm and the steel pipe along the pipeline 14 into the information processing system 11. The distance between the welding spot and the CCD image sensor 1 in the axial direction is 320 mm, and then input the target opening angle α of the weld seam 13 of the pipeline steel pipe to the in...

Embodiment 2

[0047] Nine pairs of rollers are set in this embodiment. Compared with Embodiment 1, the eighth roller pair is reduced in the present invention, and a group of third roller pair 4 and second roller pair 3 is added.

[0048] by Take the third pass forming in the fine forming stage of the pipeline steel pipe strip forming process as an example. The working process of the device is roughly as follows: Before the pipeline steel pipe 14 strip is formed, input the strip width 760mm and the width along the pipeline steel pipe 14 axis into the information processing system 11 The distance between the welding spot and the CCD image sensor 1 in the direction is 200 mm, and then input the target opening angle α of the pipeline steel pipe 14 weld seam 13 to the information processing system 11 1 is 3°, the information processing system 11 obtains the diameter D of the target pass curve m142 through calculation 1 It is 245.25mm, and then generates the target pass curve m142. During the ...

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Abstract

The invention provides an online adjustment method and device for the weld opening angle of a pipeline steel pipe, which includes a CCD image sensor, a plurality of roll pairs, an information processing system, a roll adjustment system, a signal line and an instrument rack. The invention divides the traditional large roll into multiple roll pairs, transmits the real-time opening angle of the weld to the information processing system through the CCD image sensor, compares it with the target parameters and calculates each The position of the roll pairs is adjusted by the roll adjustment system, which can not only realize the online adjustment of the weld opening angle, but also reduce the wear of the rolls and reduce the cost of roll replacement.

Description

technical field [0001] The invention relates to the field of pipeline steel pipe rolling, in particular to an online adjustment method and device for the weld seam opening angle of pipeline steel pipes. Background technique [0002] As my country pays more and more attention to energy and environmental protection issues in the steel production industry in the future, pipeline steel pipes, as an economical steel with open ends and hollow sections, will gradually replace high-energy-consuming hot-rolled seamless steel pipes in more and more places. Steel Pipe. [0003] Pipeline steel pipe means that the steel strip is bent and formed through multiple passes, so that the steel strip is bent from the edge to the center of the strip, and finally deformed into a smooth cylindrical shape. The edge of the tube blank is heated and melted by welding equipment. Under the action, the melted edges of the tube blanks are fused together to form a welded steel pipe with a straight seam. In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/00
CPCB23K37/00
Inventor 于恩林杨蕾
Owner 河北志航管道装备制造股份有限公司
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