RESISTANCE SEAM WELDING

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The Resistance Seam Welding process joins similar or dissimilar materials that are not easily joined by other conventional joining processes. It is used in a wide range of industries and has applications in electronics, assembly, aerospace and the automotive industries.

HOW DOES RESISTANCE SEAM WELDING WORK?

Resistance seam spot weldinguses a high-density resistance spot welder to transfer heat through the wire and onto the base material. The combination of time and heat causes the metals to melt, creating a strong weld wire comprising of solidified metal dendrites that create an electrical circuit. This circuit is then interrupted and repaired by switching the power source on and off at specific intervals during the process.

IMPORTANT ISSUES OF RESISTANCE SEAM WELDING

1

The heat source is usually electrical which may be supplied by an arc generator, spot welding machine, or resistance welder.

2

High speed welding of coated steels is of particular importance in manufacture of tin cans. Specialist consumable wire seam welding machines are used. Quality monitors have been developed for these applications and welding speeds up to about 100m/min are possible.

3

Any material that melts at approximately the same temperature as that used for welding will work well as a filler material.

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