Pipe expansion online straightening device

A straightening device and a technology for expanding the diameter of steel pipes, applied in the field of steel pipe production, can solve the problems of pipe wall crushing, reducing pipe toughness, and complicated straightening procedures, so as to avoid crushing injuries, improve product quality, and reduce straightening procedures. Effect

Active Publication Date: 2014-10-01
江苏玉龙钢管科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used method is to straighten the steel pipe through a steel pipe straightening machine after the diameter expansion is completed. Hardening will occur during transportation, which will reduce the toughness of the pipe. Straightening after expansion will easily cause cracks in the steel pipe and will easily cause changes in the size of the formed steel pipe.

Method used

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  • Pipe expansion online straightening device
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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] Such as figure 1 with figure 2 , a steel pipe diameter expansion online straightening device of the present invention, comprising a base 1, a portal frame 2, a clamping beam 3, a jack 4 and a servo motor 5, the base 1 is installed on the expansion line of the diameter expansion machine, the base 1 is provided with a steel pipe passage 1a along the length direction of the steel pipe. The portal frame 2 is installed on the base 1. The steel pipe passage 1a is located in the middle of the portal frame 2. Two sides of the portal frame 2 are respectively symmetrically arranged. Each clamping beam 3 has a certain angle with the horizontal plane, and each clamping beam ...

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Abstract

The invention relates to the technical field of production of steel tubes, and discloses an on-line straightener for steel tube expanding. The on-line straightener comprises a base, a portal frame, clamping beams, lifting jacks and a servo motor, wherein the base is mounted on the expanding line of an expanding machine; a steel tube passage is arranged on the base in the length direction of a steel tube; the portal frame is mounted on the base; the steel tube passage is positioned in the middle inside the portal frame; the clamping beams which form certain included angles with the horizontal plane are respectively and symmetrically arranged on both sides of the inside of the portal frame; and the lifting jacks are connected to the clamping beams respectively and are controlled through the servo motor. The on-line straightener realizes the simultaneous performance of the steel tube expansion and strengthening, reduces the conventional complex strengthening procedure, prevents the steel tube from being crushed, flawing or deforming during the strengthening process, improves the quality of tubes, and achieves the effects of energy conservation and efficiency improvement.

Description

technical field [0001] The invention relates to the technical field of steel pipe production, in particular to an on-line diameter expanding straightening device for steel pipes. Background technique [0002] When the straight seam steel pipe expanding machine equipment is producing small-diameter thin-walled steel pipes (among them: the diameter is 16″~30″ (406.4mm~762mm), and the wall thickness is (6mm-12mm)), the pipe is easy to bend after diameter expansion, which affects The straightness of the steel pipe needs to be straightened by a straightening machine. At present, the commonly used method is to straighten the steel pipe through a steel pipe straightening machine after the diameter expansion is completed. Hardening will occur during transportation, which will reduce the toughness of the pipe. Straightening after diameter expansion will easily cause cracks in the steel pipe and will easily cause changes in the size of the formed steel pipe. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D39/08B21D3/00
Inventor 吕燕青姚光利濮云南李峰
Owner 江苏玉龙钢管科技有限公司
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