Resistance Seam Welding

Resistance Seam Welding

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 welding uses 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.

How Does Resistance Seam Welding Work?

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.

Resistance Seam Welding: Advantages And Disadvantages

resistance seam welding
Advantages

Gas tight as well as liquid tight joints can be made.

The Overlap is less than spot or projection welding.

The production of single seam weld and parallel seams can be got simultaneously. 


resistance seam welding machine
Disadvantages

The welding process is restricted to a straight line or uniformly curved line.

The metals sheets having thickness more than 3mm can cause problems while welding.

The design of the electrodes may be needed to change to weld metal sheets having obstructions.


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