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Invar steel PMIG weaving welding temperature field and deformation simulation method

A simulation method and temperature field technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of time-consuming, labor-intensive, and high cost, and achieve the effect of improving production efficiency, reducing test costs, and optimizing welding process.

Inactive Publication Date: 2016-07-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] For above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of Invar steel PMIG swing welding temperature field and deformation simulation method, to solve the real production that PMIG swing welding process is applied to Invar steel mold in the prior art, depends on Repeated process parameter exploration and optimization experiments are time-consuming, laborious, and costly

Method used

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  • Invar steel PMIG weaving welding temperature field and deformation simulation method
  • Invar steel PMIG weaving welding temperature field and deformation simulation method
  • Invar steel PMIG weaving welding temperature field and deformation simulation method

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Embodiment Construction

[0032] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0033] refer to figure 1 Shown, a kind of Invar steel PMIG swing welding temperature field and deformation simulation method of the present invention comprise steps as follows:

[0034] According to the geometric shape of the Invar steel plate, a three-dimensional geometric model that is consistent with the actual Invar steel plate is established; specifically, when modeling in computer-aided design software, the pre-deformation of the plate needs to be considered, and all components must be designed in this step. The required pre-deformation angle. Secondly, Invar steel PMIG weaving welding is a multi-layer welding method, so the groove and the distribution of the welding layer are consider...

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Abstract

The invention discloses an Invar steel PMIG weaving welding temperature field and a deformation simulation method.A thermal-mechanical coupling model used for analyzing an Invar steel thick plate temperature field and a stress strain field; through reasonably setting welding technology parameters, a swinging route and pre-deformation, the established coupling model is solved and calculated by the utilization of related finite element analysis software, the Invar steel temperature field and strain field distribution and deformation conditions under the corresponding welding technology parameters are obtained through loading and solving thermal boundary conditions and mechanical boundary conditions, and then the welding technology is instructed and optimized.

Description

technical field [0001] The invention aims at the technical field of temperature field and deformation of large Invar steel thick plate, and specifically refers to a temperature field and deformation simulation method of multi-layer single-pass PMIG swing welding of Invar steel thick plate. Background technique [0002] Invar steel, also known as Invar steel, is a low-expansion precision alloy. It has been widely used in electronics and other industries, and has demonstrated its excellent performance. Due to the high degree of agreement between the thermal expansion coefficients of Invar steel and composite materials, Invar steel Used in the manufacture of composite material molds, it can overcome the problems of poor dimensional accuracy and poor stability caused by the large difference in thermal expansion coefficient between traditional mold materials such as carbon steel and aluminum alloy and composite materials. [0003] Large-scale Invar steel molds are difficult to fo...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/367G06F2119/18
Inventor 占小红陈纪城孟遥刘湘波魏艳红
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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