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Welding technology

A technology of welding process and welding equipment, which is applied in the field of metal arc welding process, can solve the problems of incomplete fusion of base metal, large stress and strain at weld seam, influence of welding process, etc., and achieve the effect of reducing insufficient heat input

Active Publication Date: 2020-03-17
PANASONIC WELDING SYST TANGSHAN
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the existing process, when carbon steel pulse welding with digital welding machine is applied to metal arc welding, for example, when metal arc welding is performed on shock absorbers or other workpieces in the form of joints, due to the lack of fusion of the base metal at the welding point And welding cracks, resulting in poor welding such as welding cracks in the largest gap of the workpiece when the first weld is welded
Furthermore, taking chrome-plated 45# steel and Q345 welding workpiece as an example, during the welding process, due to the small heat input, the base metal will not be completely fused, or due to the large heat input, the weld seam will The stress and strain at the place are relatively large, so it is easy to produce welding cracks at the position of the liquid film at the P and S segregation. The welding cracks are also independent of the welding equipment and mainly affected by the welding process.

Method used

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Embodiment Construction

[0039] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and that the description and drawings therein are illustrative in nature and not intended to limit the present invention. invention.

[0040] In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of example different exemplary structures, systems, and embodiments in which aspects of the invention may be implemented and steps. It is to be understood that other specific arrangements of components, structures, exemplary devices, systems and steps may be utilized and structural and functional modifications may be made without departing from the scope...

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Abstract

The invention provides a welding technology. The welding technology comprises the following steps that a first workpiece and a second workpiece are positioned through welding equipment; two maximum clearance points between a circular end face and a cylindrical peripheral face are subjected to weaving welding; an arcing point is selected between the circular end face and the cylindrical peripheralface and corresponds to the position, between the two maximum clearance points, of the corresponding circle circumference of the circular end face; and welding is conducted from the arcing point, meanwhile, the welding equipment is utilized to synchronously and counterclockwise rotate the first workpiece and the second workpiece by taking the center line of the first workpiece as an axis, the welding process comprises two passes of welding, first pass of welding adopts weaving welding, and second pass of welding is conducted immediately without pause after first pass of welding. Through the design, the welding technology utilizes weaving welding to replace fixed position welding in the prior art to weld the maximum clearance points, and defects such as welding cracks and non-fusion causedby insufficient heat input and stress concentration in the welding process can be reduced.

Description

technical field [0001] The invention relates to the field of metal arc welding technology, in particular to a welding technology. Background technique [0002] Welding machine technology has developed rapidly, and has now fully entered the era of digital control. In the existing process, when pulse welding of carbon steel with a digital welding machine is applied to metal arc welding, for example, when metal arc welding is performed on shock absorbers or other workpieces in the form of joints, due to the lack of fusion of the base metal at the welding point And welding cracks, resulting in welding cracks and other poor welding of the workpiece at the largest gap when the first weld is welded. Furthermore, taking chrome-plated 45# steel and Q345 welding workpiece as an example, during the welding process, due to the small heat input, the base metal will not be completely fused, or due to the large heat input, the weld seam will The stress and strain at the place are relativ...

Claims

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Application Information

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IPC IPC(8): B23K9/12B23K9/173
CPCB23K9/121B23K9/173
Inventor 王新安小东李佳兴谷孝满张琦
Owner PANASONIC WELDING SYST TANGSHAN
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