How much is the energy storage welding resistor

What is resistance welding?

Resistance welding is one of the oldest types of welding technique. The different methods are generally fast, efficient and low-polluting. No filler materials are required. The drawbacks can be high capital cost and a somewhat limited range of applications. Each type of resistant welding method can generally only be used for one type of welding.

How does resistance welding change the state of a material?

The changes of state of material, due to these applications of heat energy, can be explained by using water as an analogy to steel. By definition the basic functions of resistance welding are pressure, current and time. Steel, as it is seen at most times, is in the solid state.

What happens if heat is used in resistance welding?

The heat generated creates a plastic state and produces fusion at the interface surfaces. Although Resistance Welding is now over 120 years old, the joining of metals by the application of heat and pressure is much older.

Can resistance welding machines draw higher primary current levels?

In practice, much higher primary current levels can be drawn by resistance welding machines for short times, and this is acceptable, provided account is taken of the actual duty cycle (current on time/total time) expressed as a percentage. The allowable power at duty cycle x % may be calculated as follows:

How old is resistance welding?

Although Resistance Welding is now over 120 years old, the joining of metals by the application of heat and pressure is much older. Phoenician artisans “welded” metals together with forge and hammer over 3000 years ago. The blacksmith also used a forge and hammer, heat and pressure.

How does a resistance welding control work?

Remember, for constant current to work properly, the welding machine must first be set up properly to make a good weld. A resistance welding control can only provide control over two functions of Joule’s Law (H=I2RT), current (I) and time (T). The welding control cannot absolutely compensate for changes in the resistance (R) at the electrodes.