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Control method of welding quality of erw pipe

A welding quality and quality technology, which is applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of lack of quantitative and comparative representations, etc., and achieve the effects of clear direction, accurate quality judgment process, and quality improvement

Active Publication Date: 2020-05-05
徐州美邦木业有限公司
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Problems solved by technology

There are some studies on the judgment of welding quality through the burr outside the ERW pipe, but only the qualitative analysis on the shape, lacking the characterization that can be quantified and compared

Method used

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  • Control method of welding quality of erw pipe
  • Control method of welding quality of erw pipe
  • Control method of welding quality of erw pipe

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Embodiment Construction

[0034] In order to better understand the technical solution of the present invention, the specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. And through the finite element simulation and experimental verification of the ERW pipe welding process, the distribution law of the aspect ratio I was observed to verify the feasibility of the method. The material is X80 steel and the specification is Φ355.6×12.7, and the numerical simulation is carried out. figure 1 Shown is the flow chart of the method for adjusting and controlling welding quality of ERW pipe of the present invention, which mainly includes the following steps:

[0035] Step 1. Numerical simulation analysis: set the initial range of electrode distance K1, extrusion amount K2 and welding speed K3 respectively (Kn min , Kn max ), the set parameter n takes 1, 2 or 3, where the electrode distance refers to the horizontal dis...

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Abstract

The invention discloses a method for regulating and controlling the welding quality of an ERW pipe. The corresponding range of the aspect ratio I of external burr within the application range of a metal streamline angle is obtained through simulation; the corresponding range is verified through experiments; then the corresponding range is used as a criterion factor for judging the quality; and thequality of the actual ERW pipe is judged on line according to the criterion. Compared with the existing simulation technology, the relationship between the external burr aspect ratio I and the ERW pipe quality is obtained according to the aspect ratio I = H / W of the external burr at a weld joint; the criterion factor for judging the ERW quality through the external burr aspect ratio I is established, so that the appearance of the external burr is conveniently quantified, online judgment and regulation is realized, the production efficiency of the ERW pipe is improved, and the labor cost is reduced; and the relationship between the metal streamline angle theta and the external burr aspect ratio I is obtained through simulation and experiment verification, so that the online quality controlprocess of the ERW pipe is guided, the directionality of the control process is determined, the efficiency and the accuracy rate of quality control of the ERW pipe are improved, and the quality of the ERW pipe is further improved.

Description

Technical field [0001] The invention belongs to the field of ERW tube production, and specifically relates to a method for adjusting and controlling the welding quality of an ERW tube. Background technique [0002] ERW is a welding method that directly contacts the electrode and the tube blank, uses the electrode and the welding area to form a current loop, and inputs high-frequency current from the electrode to heat the edge of the tube blank. ERW has the advantages of fast heating efficiency, lower energy consumption, and high production efficiency, and is widely used in welded pipe enterprises. [0003] In the current ERW tube production, the factory judges the welding quality of the tube blank by observing the shape and color of the burrs and sparks according to the experienced production workers. If the quality is poor, adjust the corresponding parameters to improve, and then realize the control of the ERW tube welding quality . This traditional quality judgment method, with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/12
CPCB23K31/125
Inventor 于恩林牛身身
Owner 徐州美邦木业有限公司
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