Progressive feeding and precise straightening method for metal pipe

A metal tube, progressive technology, applied in the direction of material analysis, material analysis, material magnetic variables, etc. using sound waves/ultrasonic waves/infrasonic waves, can solve problems that affect the reliability and accuracy of flaw detection, signal amplitude changes, probe vibration, etc.

Active Publication Date: 2019-03-05
宝武特冶航研科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual automatic flaw detection process, because the metal pipe is in the transmission process of detection, the probe of the existing ultrasonic automatic flaw detection device is usually directly fixed on the probe bracket, and the probe bracket is fixedly connected with the flaw detection water tank, because the type of metal pipe is relatively small. Many, fixed probe settings, unable to meet the flaw detection requirements of various types of metal pipes
At the same time, during the flaw detection process of the metal pipe, when the defect position of the metal pipe passes through, it is easy to touch the probe and cause the probe to vibrate and warp, resulting in a change in the amplitude of the defect signal. If it cannot be adjusted in time, it will also affect the reliability of flaw detection. and accuracy

Method used

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  • Progressive feeding and precise straightening method for metal pipe
  • Progressive feeding and precise straightening method for metal pipe
  • Progressive feeding and precise straightening method for metal pipe

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specific Embodiment approach

[0049] Specific implementation method: a progressive feeding fine straightening method for metal pipes, including the step of relying on paired straightening rollers to realize the straightening of metal pipes during the process of advancing the metal pipes in the axial direction. While the tube advances, it rotates itself to form a metal tube that advances in a spiral manner, and realizes straightening during the spiral advance of the metal tube.

[0050] In this way, the metal pipe rotates while moving forward, so that when the metal pipe is straightened, it is in the state of rotating and moving forward, so that the contact area between the straightening roller and the metal pipe per unit time increases, and the straightening effect is improved. Effectiveness and efficiency. At the same time, the metal pipe rotates forward, which can also make the detection range of the probe in the metal pipe flaw detection device larger. It can rely on the fixed probe to realize the flaw ...

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Abstract

A progressive feeding and precise straightening method for a metal pipe is disclosed. The method includes a step of achieving metal pipe feeding and straightening by straightening rollers arranged inpairs in an axial forward movement process of the metal pipe. The method is characterized in that a plurality of pairs of the straightening rollers arranged horizontally are adopted to achieve straightening in a manner that straightening force of each pair of the straightening rollers increases in order in the movement direction of the metal pipe. The method can achieve progressive straightening during feeding before metal pipe flaw detection so as to improve flaw detection effects and has advantages of simple implementation and good straightening effects.

Description

technical field [0001] The invention relates to a metal pipe flaw detection detection material feeding technology; in particular, it relates to a progressive feeding fine correction method for metal pipes. Background technique [0002] Metal pipe (mainly refers to steel pipe) is an important building material widely used. Due to various factors in the production process of metal pipe, defects such as longitudinal cracks, transverse cracks, folding, and delamination often exist on the metal pipe wall. If the metal pipe is defective, it will break during use and cause accidents, or even cause serious consequences, which may cause major economic losses or even casualties. For this reason, metal pipes for important purposes need to have complete non-destructive testing equipment, and online flaw detection of metal pipes . In order to ensure the quality of the metal pipes leaving the factory, the existing flaw detection methods mainly include ultrasonic flaw detection and eddy c...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/22G01N27/90
CPCG01N27/90G01N29/04G01N29/22G01N2291/0234
Inventor 吴建军赵伟
Owner 宝武特冶航研科技有限公司
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