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Apparatus and method for joining dissimilar materials

A technology of connection and electrical contact, applied in the direction of welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve the problems of increased cost and complicated assembly

Inactive Publication Date: 2014-12-31
ALUMINUM CO OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

FDS is usually done from one side and requires alignment with the positioning holes in the steel plate, complicating assembly and increasing costs

Method used

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  • Apparatus and method for joining dissimilar materials
  • Apparatus and method for joining dissimilar materials
  • Apparatus and method for joining dissimilar materials

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Embodiment Construction

[0094] figure 1Three layers of material 10, 12, 14 are shown joined according to one embodiment of the present disclosure. Layers 10, 12, 14 are dissimilar, eg dissimilar metals such as steel and aluminium. For example, the outer layers 10 and 14 may be a steel alloy and the middle layer 12 may be an aluminum alloy. As shown, two outer layers 10 , 14 that may be welded to each other may be welded to each other via an intermediate layer 12 to form a laminated structure L1 . This is shown in the sequential procedures labeled A-E. Such a process may be carried out in a conventional spot welding station with opposing electrodes whose ends 16 and 18 contact the stack of layers 10, 12, 14 prior to welding, as shown in procedure A. In process B, opposing forces F1, F2 applied by a conventional welding machine (not shown) move the ends 16, 18 towards each other and an electrical potential is applied between the electrodes 16, 18, creating a bond through said electrodes and the lay...

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PUM

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Abstract

An apparatus and method for fastening dissimilar metals like steel and aluminum utilizes a spot welding machine. The metals are stacked with an aluminum body captured between steels. Heat from the welder's electric current softens the lower melting point aluminum allowing an indentation of the steel layer to penetrate the aluminum and weld to an opposing steel layer. The process may be used to join stacks with several layers of different materials and for joining different structural shapes.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 61 / 839,478, entitled Apparatus and Methods for Joining Dissimilar Materials, filed June 26, 2013, which is incorporated by reference incorporated herein in its entirety. technical field [0003] The present invention relates to welding apparatus and methods, and more particularly, to methods for joining dissimilar materials, such as dissimilar metals. Background technique [0004] Various fasteners, devices and methods are known for joining and assembling parts or subassemblies, such as welding, riveting, threaded fasteners and the like. In some cases, it will be necessary to cost-effectively join dissimilar metals such as aluminum parts, components, layers, etc. to steel (unpainted steel, coated steel, mild steel, high strength steel, ), other parts, subassemblies, layers, etc. made of titanium alloys, copper alloys, magnesium, plastics, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/20B23K11/36
CPCB23K11/20B23K11/34B23K2103/18B23K2103/04B23K2103/05B23K2103/10B23K2103/14B23K2103/15
Inventor 唐纳德·J·斯皮内拉
Owner ALUMINUM CO OF AMERICA