Browse Prior Art Database

Force Field Welding

IP.com Disclosure Number: IPCOM000092914D
Original Publication Date: 1967-Mar-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Rzant, AW: AUTHOR

Abstract

The system welds microminiature components without having to use a probe for contacting and driving the components at the point of joining. One end of wire 1 is placed in contact with conductive terminal 2. Clamp 3 connects wire 1 in series with terminal 2, a source of welding current 4, and switch 5. Before closing switch 5, electromagnet 6 is energized so as to develop an electromagnetic field. When switch 5 is closed, current flows along wire 1 in such a direction as to set up an electromagnetic field that is repelled by the field of electromagnet 6. Thus the end of wire 1 is forced into the molten puddle formed due to the flow of the weld current. The system has several advantages. The weld is accomplished without the use of a heat sink. There is no sticking of an electrode to molten metal.

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Force Field Welding

The system welds microminiature components without having to use a probe for contacting and driving the components at the point of joining. One end of wire 1 is placed in contact with conductive terminal 2. Clamp 3 connects wire 1 in series with terminal 2, a source of welding current 4, and switch 5. Before closing switch 5, electromagnet 6 is energized so as to develop an electromagnetic field. When switch 5 is closed, current flows along wire 1 in such a direction as to set up an electromagnetic field that is repelled by the field of electromagnet 6. Thus the end of wire 1 is forced into the molten puddle formed due to the flow of the weld current. The system has several advantages. The weld is accomplished without the use of a heat sink. There is no sticking of an electrode to molten metal. There is no electrode follow-up problem. Dissimilar metals can be more readily welded since higher temperatures for shorter times can be used.

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