Archive | Furnace

In this article we will discuss about:- 1. Types of Resistance Furnaces 2. Application of Resistance Furnaces 3. Temperature Control. Types of Resistance Furnaces: 1. Salt-Bath Furnace: Salt-bath furnaces are used for the purposes of tempering, quenching and hardening of steel tools. The characteristics of salt-bath heating are rapidity and uniformity and selective localised heating combined with protection from oxidation. [...]

In this article we will discuss about:- 1. Meaning of Arc Furnaces 2. Types of Arc Furnaces 3. Power Supply and Control. Meaning of Arc Furnaces: When a high voltage is applied across an air gap, the air in the gap gets ionised under the influence of electrostatic forces and becomes conducting medium. Current flows in the form of a [...]

In induction heating effect of currents induced by electromagnetic action in the charge is employed. The heat developed depends on the power drawn by the charge. The power consequently depends upon the voltage and resistance of the charge, because power drawn is equal to V2/R. So to develop heat sufficient to melt the charge, the resistance of the charge must [...]