Self-adjusting clad wire for welding application
A self-regulating, wire-based technology for process applications that can solve problems such as production delays, unstable joining processes, and poor weld quality
Inactive Publication Date: 2014-05-28
GM GLOBAL TECH OPERATIONS LLC
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- Abstract
- Description
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- Application Information
AI Technical Summary
Problems solved by technology
Misalignment of the wire relative to the weld can create an unstable joining process and lead to poor weld quality
As a result, manual adjustments are often required to straighten bent wires, causing delays in production
Method used
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Embodiment Construction
[0052] The following is a detailed description of exemplary, non-limiting embodiments.
[0053] Figure 1a with 1b Two exemplary configurations for self-adjusting wires are shown. The self-adjusting wire 10a has a core 12 of a metal or a metal alloy, for example, which is suitable as a connecting material, such as a welding or filler material, and a cladding or outer layer 14 of a shape-memory alloy. Figure 1a The outer layer 14 is the layer or cladding that continues around the circumference of the core 12. The cladding 14 is generally cylindrical or tubular in shape surrounding and adjoining the outer surface of the core 12 . The self-adjusting wire 10b also has a core 12 of a shape memory alloy, but an outer layer 16 of a metal or metal alloy suitable for use as a connecting material, such as a welding or filler material, does not completely surround the periphery of the core 12 Floor. In various embodiments, the outer layer 16, although not completely covering the circ...
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Abstract
The invention relates to a self-adjusting clad wire for welding application, and discloses a self-adjusting metal wire, a method for manufacturing the self-adjusting metal wires, a heat connection process (such as gas metal arc welding or laser beam braze welding) and other processes using the self-adjusting metal wires. The metal wire is provided with an outer layer and a core, wherein the outer layer composed of metal or metal alloy is suitable for serving as a connecting material in the connecting process, and the core is composed of shape memory alloy. The outer layer, such as one or multiple longitudinal straps, surrounds the outer portion of the core continuously or discontinuously. The shape memory alloy in the self-adjusting metal wire is 'trained' to be in a straight wire shape in austenite. In the processes using the self-adjusting metal wires, the self-adjusting metal wires are heated to the temperature above the austenite phase transition temperature of the shape memory alloy so as to straighten bent ends of the self-adjusting metal wires.
Description
technical field [0001] The present invention relates to welding and joining methods and materials and articles used in these methods. In another aspect, the invention relates to processes involving alignment wires and the like. Background technique [0002] This section provides information that is helpful in understanding the present invention but does not necessarily constitute prior art. [0003] Gas metal arc welding (GMAW), often referred to as metal inert gas welding (MIG), is an arc welding process that uses a continuous, consumable welding wire or filler wire as the electrode. In gas metal arc welding, a consumable wire electrode is passed through a welding torch or torch and protrudes from a torch tip made of a conductive metal, such as a copper alloy. An electrical potential applied between the contact tip and the metal workpiece to be welded creates a current in the wire which supports an arc between the end of the wire and the metal workpiece. The arc is isola...
Claims
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IPC IPC(8): B23K35/02B23K35/22B23K31/02
CPCB23K35/02B23K35/0227B23K35/0261B23K35/302B23K35/3033B23K35/3066B23K35/3073B23K35/0266C22C38/04C22C38/08C22C9/01C22C9/02C22C9/04C22C19/03C22F1/08C22F1/10B23K35/30B23K35/3053B23K35/0255
Inventor 张婧王培中杨上陆
Owner GM GLOBAL TECH OPERATIONS LLC