a welding method
A welding method and welding material technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as large differences in base metal properties, failure of bending tests, and problems with mechanical properties.
Active Publication Date: 2021-04-30
HIMILE MECHANICAL MFG
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Problems solved by technology
However, the properties of the base metal on both sides of the joint in this groove form are very different, and there will be problems in the mechanical properties.
In each bending test, due to the different yield strengths of the high-strength steel 1 and the low-strength steel 3 during bending, an opening 4 will appear at the welded joint, that is, the connection between the high-strength steel 1 and the welding material 2, resulting in failure of the bending test; Or in actual application, the product structure is not strong enough
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Embodiment Construction
[0028] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.
[0029] Please refer to Figure 4 and Figure 5 , the embodiment of the present invention provides a welding method, the two welding base metals are the first base metal 5 and the second base metal 6 respectively, wherein the strength of the first base metal 5 is greater than the strength of the second base metal 6, where The "strength" means tensile strength or yield strength, including the following steps:
[0030] Processing the groove of the first base material 5 into a straight edge or a convex arc edge;
[0031] Weld the two welding base metals.
[0032] Wherein, the bevel of the first base material 5 is set as a straight edge or an arc shape, which can enhance the connection strength of the welding base metals with different strengths on both sides of the weld seam, and avoid the problem of ...
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Abstract
The invention discloses a welding method, which belongs to the field of welding technology. Two welding base materials are respectively a first base material and a second base material. The strength of the first base material is greater than that of the second base material. The method comprises the following steps: The groove of the first base material is processed into a straight edge or a convex arc edge; the two welding base materials are welded; the groove of the first base material of the present invention is a straight edge or an arc-shaped setting, which can strengthen the weld seam The joint strength of the welded base metal with different strengths on both sides of the weld can avoid the problem of stress concentration. When doing the bending test of mechanical properties, it can effectively avoid the opening defect; and the welding quality of the product using this welding method can also be guaranteed. The product The structural strength is significantly enhanced; the invention can reduce the filling amount of high-strength welding materials during the welding process and save part of the cost.
Description
technical field [0001] The invention relates to the technical field of welding, in particular to a welding method. Background technique [0002] Welding, also known as welding or welding, is a manufacturing process and technology for joining metal or other thermoplastic materials such as plastics by means of heating, high temperature or high pressure. The connection strength at the welded joint is the most important indicator to determine the welding effect. In actual welding, the welding effect of two base materials of the same material is often better than that of two base materials of different materials, and how to improve different materials and different strengths (ie tensile strength, yield strength or The welding effect of base metals with different hardness has always been a difficult problem in the field of welding. [0003] like Figure 1-3 As shown, taking the welding of full penetration butt welds of high-strength steel 1 and low-strength steel 3 as an example...
Claims
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IPC IPC(8): B23K9/16B23K9/235B23K33/00
Inventor 黄志宇唐立星张增军张本松王晓龙杨振艳张旭明赵振冉徐俊超黄超
Owner HIMILE MECHANICAL MFG