Method and equipment for flexible forming of straight seam submerged arc welded pipe

A technology of straight seam submerged arc welding and flexible forming, which is applied in the field of straight seam submerged arc welded pipe forming, can solve the problems of market sales restrictions, high cost of steel pipes, and huge equipment, so as to reduce residual internal stress, reduce roll replacement, and avoid friction The effect of injury

Inactive Publication Date: 2011-12-21
太原华科信冶金成套设备有限公司
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Problems solved by technology

[0005] This production process has the disadvantages of huge equipment, high energy consumption, large investment and low efficiency
As a result, the cost of the steel pipe is high, the sel

Method used

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  • Method and equipment for flexible forming of straight seam submerged arc welded pipe
  • Method and equipment for flexible forming of straight seam submerged arc welded pipe

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Embodiment Construction

[0016] A method for flexible forming of straight seam submerged arc welded pipes, which adopts the method of fixing the center and extruding the edges. First, two bends are extruded by a flat roller frame, and then gradually extruded by four four-roller frames. U-shape, then extruded into a C-shape by four C-type vertical roller stands, and finally extruded into an open O-shape by two four-roller stands.

[0017] Such as figure 1 As shown, a kind of equipment for flexible forming of straight seam submerged arc welded pipes, according to the order in which steel coils enter: the first flat roll frame 1, the first four-roll frame 2, the second four-roll frame 3, the first Three-four roller frame 4, the fourth four-roll frame 5, the first C-shaped vertical roller frame 6, the second C-shaped vertical roller frame 7, the third C-shaped vertical roller frame 8, the fourth C-shaped vertical roller frame Roll frame 9, fifth four-roll frame 10 and sixth four-roll frame 11. Among the...

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Abstract

The invention discloses a method and equipment for flexible forming of straight seam submerged arc welded pipes, belonging to the technical field of straight seam submerged arc welded pipe forming; and provides a method for flexible forming of straight seam submerged arc welded pipes with low equipment price, easy forming, and little damage to steel pipes and equipment; the center is fixed and the edge is extruded. First, two curved edges are extruded through a flat roller frame, and then gradually extruded into a U shape through four four-roller frames, and then four C-shaped vertical The roll frame is extruded into a C shape, and finally it is extruded into an open O shape through two four-roller frames. It is a device made according to the above method. Its structure is: according to the order in which the steel coils enter: the first One flat roll frame, the first four-roll frame, the second four-roll frame, the third four-roll frame, the fourth four-roll frame, the first C-type vertical roll frame, the second C-type vertical roll machine frame, the third C-type vertical roll frame, the fourth C-type vertical roll frame, the fifth four-roller frame and the sixth four-roller frame; the present invention is applied in the technical field of longitudinal submerged arc welded pipe forming.

Description

technical field [0001] The invention discloses a method and equipment for flexible forming of a straight seam submerged arc welded pipe, belonging to the technical field of straight seam submerged arc welded pipe forming. Background technique [0002] The existing LSAW pipes are mainly formed by the UOE production process: the UOE production process uses a large press (above 16,000 tons of pressure) to press the steel plate that has been cut into a certain size into a U shape through a mold, and then uses the second Two large presses (more than 20,000 tons of pressure) press the U-shaped tube embryo into an O-shaped tube through the mold, and then use the submerged arc welding machine to spot weld the steel tube, and then perform internal welding and external welding to finally form a steel tube. [0003] This production process has the disadvantages of huge equipment, high energy consumption and huge investment. Thereby the cost height that causes steel pipe, selling price...

Claims

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Application Information

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IPC IPC(8): B21C37/08
Inventor 高云会
Owner 太原华科信冶金成套设备有限公司
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