Predicting method aiming at ERW welding pipe welding seam area mechanical performance
A technology of mechanical properties and prediction methods, which is applied in the field of heat treatment, can solve problems such as unsatisfactory factory production, large errors in the detection process, long detection cycle, etc., and achieve the effect of improving the yield and quality of finished products, reducing production costs, and simple and fast operation
Inactive Publication Date: 2017-11-24
YANSHAN UNIV
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[0004] The traditional mechanical performance testing method for the quality of welded pipe welds has a long testing cycle, high testing costs, and large errors in the testing process, which cannot meet the needs of factory production.
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[0018] The present invention will be further explained below in conjunction with the drawings and embodiments:
[0019] Such as figure 1 As shown, the specific steps of the method of the present invention are as follows:
[0020] Step 1. Use ANSYS software to model the temperature field after high-frequency welding. The specific operations are as follows: Use ANSYS software to build a three-dimensional finite element model using the process parameters of the factory high-frequency welding process, and perform meshing, apply load and Boundary conditions, determine the analysis type, set the space step and time step, then solve it, save the solution result, and get the temperature field after high-frequency welding; the above process parameters refer to the process parameters in the factory high-frequency welding process. Including steel pipe diameter, steel pipe wall thickness, material, current, frequency, opening angle, diameter of magnetic rods, number of magnetic rods, distance ...
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The invention discloses a predicting method aiming at ERW welding pipe welding seam area mechanical performance. The predicting method comprises the following steps of utilizing ANSYS to conduct modeling to obtain a temperature field; utilizing SYSWELD to analyze the temperature field to obtain an organizational field; renewing parameters to conduct repeated calculation to obtain a database A; establishing a network structure, and using a training algorithm to train a sample to obtain a mapping relation; conducting sampling to conduct a tensile test, testing a strength index, and storing the strength index into a database B; merging a normal system in an experience relation formula, and conducting experiment regression to obtain an equation set; utilizing MATLAB to establish a mechanical performance prediction system user interface. According to the predicting method aiming at the ERW welding pipe welding seam area mechanical performance, all welding parameters of a factory can be simulated through the ANSYS; the welded organizational field can be detected in real time through the SYSWELD; through establishment of the ERW welding pipe welding seam area mechanical performance prediction system user interface, a predicted value of the mechanical performance can be obtained simply by inputting welding relevant parameters. The predicting method aiming at the ERW welding pipe welding seam area mechanical performance is easy and fast to operate, the detection efficiency can be improved by a large margin, the production cost is lowered, the welding pipe forming rate is increased, and the quality of the welding pipe is improved.
Description
Technical field [0001] The invention relates to the field of heat treatment, in particular to a method for predicting the mechanical properties of the weld zone of an ERW welded pipe. Background technique [0002] At present, ERW straight seam resistance welded pipe occupies a large proportion in the application of welded pipe. ERW welded pipe is mainly formed by welding the edge of the tube blank by the principle of high-frequency induction heating. High-frequency welding has high heating efficiency and fast heating speed. Environmental protection and energy saving have been widely used in the welding process of welded pipes. [0003] When using high-frequency induction to produce welded pipes, the welding quality of welds determines the quality of welded pipes, and the mechanical properties of welds are an important index to evaluate the quality of welds. The mechanical properties of welded pipes will directly affect the quality of welded pipes. quality. Most welded pipes work ...
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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 韩毅张晓波
Owner YANSHAN UNIV