Working Principle of Resistance Welding
The cycle begins with the metal parts being carried into contact with one another, sandwiched between two electrode tips. These electrodes are responsible for applying the requisite pressure to ensure optimal contact and to firmly hold the parts intact during welding.
When the components are set up, an electric current is brought into the workpieces by energizing the electrodes. This current flow through the workpieces, experiencing resistance at the connection point where they meet.
As the current encounters this resistance, it delivers a lot of intensity at a sped up pace. The Joule heating effect is a way electrical energy is effectively turned into intense heat. The intensity created by the resistance causes the metal at the contact point to rapidly soften and eventually melt.
This heat generation happens due to the energy change from electric to thermal. The resistance welding equation for heat generation is
H = I 2 RT
Where,
I = Current flowing through the electrodes,
R = is the contact resistance of the point of interaction, and
t = is the time at which the current flows
Electric Resistance Welding
In the past days, the process of metal welding should be possible by heating the metals and pressed jointly which is known as the forge welding method. In any case, as of now, the welding innovation has been changed by the arrival of electricity. In the nineteenth century, resistance, gas, and arc welding was invented. After this, there are various types of welding technologies have been imagined like friction, ultrasonic, plasma, laser, and electron beam welding. However, the uses of welding technology essentially include different industries.
In this article, we will be going through Resistance Wielding, We will start our Article with the Introduction of Resistance Wielding, Then we will go through the Working Principle of Resistance welding and With its Types, Then We will through its Specification, At last, we will conclude our article with its Advantages, Disadvantages, Applications, Comparison Between Resistance and Electric wield and Some FAQs.
Table of Content
- What is Resistance Welding?
- Working Principle
- Types
- Specifications
- Advantages
- Disadvantages
- Applications
- Resistance Welding Vs Electric Arc Welding