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Online adjusting method and device for pipeline steel pipe weld joint opening angle

An adjustment method and opening angle technology are applied in the field of online adjustment of the opening angle of the welding seam of pipeline steel pipes, which can solve the problems of waste, increase production cost, time-consuming and labor-intensive, etc., so as to reduce loss, improve surface forming quality, and reduce daily production and maintenance costs. Effect

Active Publication Date: 2020-12-04
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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  • Online adjusting method and device for pipeline steel pipe weld joint opening angle
  • Online adjusting method and device for pipeline steel pipe weld joint opening angle
  • Online adjusting method and device for pipeline steel pipe weld joint opening angle

Examples

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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 adjusting method and device for a pipeline steel pipe weld joint opening angle. The online adjusting device comprises a CCD image sensor, a plurality of roller pairs,an information processing system, a roller adjusting system, a signal line and an instrument rack. According to the online adjusting method and device, a traditional large roller is divided into the multiple roller pairs, the real-time opening angle of a weld joint is transmitted to the information processing system through the CCD image sensor and compared with target parameters, the position ofeach roller pair is calculated according to the stress change of the section of a pipeline steel pipe in the pipeline steel pipe forming process, and the position of each roller pair is adjusted through the roller adjusting system. Not only can the size of the weld joint opening angle be adjusted online, but also roller abrasion can be reduced, and roller replacement cost is reduced.

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 Applications(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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