In general, resistance welding methods are efficient and cause little pollution, but their applications are somewhat limited and the equipment cost can be high.
12.
Glidcop has been successfully applied to resistance welding electrodes to reduce stick to commutators, high speed motor and generator components, and microwave power tube components.
13.
Spot welding is a resistance welding method used to join two or more overlapping metal sheets, studs, projections, electrical wiring hangers, some heat exchanger fins, and some tubing.
14.
This process is very similar to resistance welding, except that in the case of resistance welding the current is delivered using contacts to the workpiece instead of using induction.
15.
This process is very similar to resistance welding, except that in the case of resistance welding the current is delivered using contacts to the workpiece instead of using induction.
16.
Welded pipe is formed by rolling plate and welding the seam ( usually by Electric resistance welding ( " ERW " ), or Electric Fusion Welding ( " EFW " ) ).
17.
Resistance welding was also developed during the final decades of the 19th century, with the first patents going to Elihu Thomson in 1885, who produced further advances over the next 15 years.
18.
The principal involved in resistance welding is that when an electric current is passed through the junction, a high temperature is obtained by the resistance of the metal to the passage of the current.
19.
Further testing of these methods was done in the following decades, and today researchers continue to develop methods for using other welding processes in space, such as laser beam welding, resistance welding, and friction welding.
20.
Early welding equipment designed and manufactured by Unitek Corporation included the stored energy resistance welding systems ( CD / capacitive discharge ), initially developed to weld the brackets on the orthodontic bands used to straighten teeth.
