Welding material sheet, conveying system and welding device and method
A technology of conveying system and welding device, applied in the fields of welding material sheet, welding device and conveying system, can solve the problems of weakening the strength and durability of dissimilar metal joints, detachment, and easy initiation of cracks.
Active Publication Date: 2022-03-25
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
However, the inventors realized that although the aluminum alloy inside the weld nugget is basically removed and the steel-steel spot welded joint can guarantee a certain bonding strength, there are still brittle intermetallic compounds produced by the contact between part of the molten aluminum alloy and steel around the weld joint The ring makes it easy for cracks to initiate and expand in this area, causing the aluminum alloy plate to separate from the solder joints, and weakening the strength and durability of dissimilar metal joints
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[0058] The technical solution of the present invention will be further described below through the embodiments in conjunction with the accompanying drawings.
[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art; the terms used herein are only for describing specific embodiments, and are not intended to limit the present application; the present application The terms "comprising" and "having" and their equivalents in the description, claims and descriptions of the drawings are intended to cover a non-exclusive inclusion.
[0060] In the description of the embodiments herein, terms such as "first" and "second" are only used to distinguish different pairs, but not to limit their relative importance, quantity of technical features, specific order or primary and secondary relationship.
[0061] As used herein, "an embodiment" means that a particular feature, structure, or character...
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Abstract
The invention provides a welding material piece which is used for dissimilar metal welding of a first metal plate with the melting point not exceeding 800 DEG C and a second metal plate with the melting point higher than 800 DEG C. A prismatic structure is arranged around the center of the surface, making contact with the first metal plate, of the welding material piece so that the prismatic structure can be embedded into the surface of the first metal plate in the welding process. Electric resistance welding connection between dissimilar metals can be effectively achieved, the joint strength is improved, the welding quality is improved, manufacturing is easy, and the cost is low. The invention further provides a material sheet conveying system, a welding device and a welding method.
Description
technical field [0001] The invention belongs to the field of resistance welding, and in particular relates to a welding material sheet, a conveying system, a welding device and a method. Background technique [0002] With the rapid development of material processing and machinery manufacturing technology, in the fields of aerospace, vehicles, ships, rail transit and various equipment manufacturing, the comprehensive application of various metal materials has become more and more popular in the industry. Among them, new alloys such as aluminum alloys, magnesium alloys, and titanium alloys have been more and more widely used due to their advantages of light weight and high strength. This makes dissimilar metal joining processes between light alloys and conventional alloy steels increasingly important. [0003] In the traditional process, dissimilar metals are usually connected by mechanical means such as riveting, which is complicated and costly. However, due to the great di...
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IPC IPC(8): B23K11/36
CPCB23K11/36
Inventor 李铭锋杨上陆陶武王艳俊
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI