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Longitudinal seam welded steel pipe manufacturing technology and spool pressing device for technology

A manufacturing process and a technology of a pressing device, applied in the field of straight seam steel pipe manufacturing process, can solve the problems of waste of raw materials, difficult to adjust the size, waste of time and manpower, etc., and achieve high welding quality, excellent weld structure, safe and reliable operation process. control effect

Inactive Publication Date: 2017-01-04
天津鑫凯建业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the size of the seamless steel pipe is not easy to adjust after forming. It is necessary to use a lathe to change the size of the inner and outer diameters, which not only wastes time and manpower, but also causes a great waste of raw materials.

Method used

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  • Longitudinal seam welded steel pipe manufacturing technology and spool pressing device for technology
  • Longitudinal seam welded steel pipe manufacturing technology and spool pressing device for technology
  • Longitudinal seam welded steel pipe manufacturing technology and spool pressing device for technology

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a longitudinal seam welded steel pipe manufacturing technology which comprises the following steps of steel plate shearing, finishing, plate rolling forming, welding, welding seam polishing, roundness correction and dimension adjusting, wherein the step of welding comprises spot welding location and welding forming, and the step of roundness correction comprises automatic roundness correction and manual adjustment. The eccentricity of a longitudinal seam welded steel pipe manufactured by the longitudinal seam welded steel pipe manufacturing technology is less than 0.1mm, the circular runout of the longitudinal seam welded steel pipe is less than 0.4mm, the quality of the longitudinal seam welded steel pipe is ensured effectively, the longitudinal seam welded steel pipe has excellent welding seam structure and excellent overall performance, the welding quality is high, and an operation process is safe and controllable.

Description

technical field [0001] The invention belongs to the field of steel pipe manufacturing, and in particular relates to a straight seam steel pipe manufacturing process. Background technique [0002] Seamless steel pipes have a hollow cross-section and are widely used as pipes for transporting fluids, such as pipes for transporting oil, natural gas, gas, water, and certain solid materials. However, the size of the seamless steel pipe is not easy to adjust after forming, and it is necessary to use a lathe to change the size of the inner and outer diameters, which not only wastes time and manpower, but also causes a great waste of raw materials. Straight seam steel pipe is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. The production process of straight seam welded pipe is simple, the production efficiency is high, and the cost is low. Contents of the invention [0003] In view of this, the present invention aims to propose a straight ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K37/053
CPCB23P15/00B23K37/0533B23K37/0538
Inventor 王秀玲张品庚
Owner 天津鑫凯建业科技有限公司
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