ERW prewelding method for LSAW steel pipe production

A steel pipe, pre-welding technology, applied in other manufacturing equipment/tools, manufacturing tools, etc., can solve the problems of low production efficiency, high production cost, inability to realize continuous assembly line operation, etc., and achieve high production efficiency, precise control, and operability. Good results

Inactive Publication Date: 2016-12-21
葫芦岛市钢管工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Originally, LSAW welded pipes were processed with steel plates, which could not achieve ...

Method used

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  • ERW prewelding method for LSAW steel pipe production
  • ERW prewelding method for LSAW steel pipe production

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] according to figure 1 As shown, there are double cone uncoiling device 01, leveling device 02, shear butt welding device 03, transition device 04, loop storage device 05, pre-bending forming device 06, row forming device 07, finishing forming device 08 and high-frequency pre-welding device 09 are combined to form ERW production line 1. ERW production line is connected to ERW / LSAW transition device 2. ERW / LSAW transition device 22 is provided on the ERW / LSAW transition device, and on both sides of ERW / LSAW transition device The ERW / LSAW transitional roller table 21 is respectively installed, and the LSAW production line 3 is connected to the end of one side of the ERW / LSAW transitional roller table, and the LSAW welding device 31 is arranged on the LSAW production line.

[0013] Control flow:

[0014] according to figure 2 As shown, the tube coils are first uncoiled, then leveled and sheared butt welded. After sheared butt welded, they are stored in a spiral, stacked,...

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Abstract

The invention provides an ERW prewelding method for LSAW steel pipe production. Operation is conducted through a steel pipe production line device. A pipe-making coiled plate is uncoiled first, then flattening and cutting butt welding are conducted, after cutting butt welding, spiral storage and stacking are conducted, pre-bending forming is conducted, then high-frequency welding is conducted after roller arranging forming and finishing forming, and ERW prewelding is completed. Then through an ERW/LSAW transition device, a steel pipe is transited to LSAW for longitudinal submerged arc welding to become a finished product. According to the ERW prewelding method, ERW prewelding is adopted, and thus continuous production of a steel pipe LSAW production line is achieved. The ERW prewelding method has the characteristics of being precise in control, good in operability and high in production efficiency and is suitable for being applied as a method for steel pipe welding production.

Description

technical field [0001] The invention provides an ERW pre-welding method used in the production of LSAW steel pipes in the field of mechanical manufacturing. Background technique [0002] Originally, LSAW welded pipes were processed with steel plates, which could not realize continuous assembly line operation, resulting in low production efficiency and high production costs. Contents of the invention [0003] In order to realize pre-welding of steel pipes, the present invention proposes an ERW pre-welding method for the production of LSAW steel pipes. The method solves the technical problems of steel pipe production through the straight seam submerged arc welding of the ERW pre-welded LSAW production line. [0004] The scheme that the present invention solves technical problem adopts is: [0005] The ERW production line consists of double-cone uncoiling device, leveling device, shear butt welding device, transition device, looper storage device, pre-bending forming device...

Claims

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Application Information

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IPC IPC(8): B23P23/06
CPCB23P23/06
Inventor 冯振伟高文革朱玉武费士爽刘春友
Owner 葫芦岛市钢管工业有限公司
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