Influence of medium frequency heating furnace on Quenching Technology

Jun 20, 2022

The traditional heat treatment method is to control a reasonable heating temperature, keep it for a certain time (also known as holding time or heating time) at this temperature, and then cool it at a certain speed to obtain a good heat treatment effect (which can also be described by a temperature time process curve). Today, Luoyang Wanle power equipment factory introduces the influence of medium frequency heating furnace on Quenching Technology:

Because the induction heating speed is very fast and it is difficult to measure temperature, indirect methods are usually used to control it, such as controlling the steady growth of heating by heating time or adjusting electrical parameters to change the heating speed. It can be seen that the induction heating surface quenching can control parameters by adjusting the electrical parameters of the equipment to ensure the surface quenching quality.

The power of medium frequency heating furnace also has an effect on the depth of quenching layer. The higher the power is, the shorter the heating time is, and the heat of the direct heating layer is too late to transmit to the inside, the shallower the quenching layer is. The power required by the medium frequency heating furnace for quenching is related to the quenching area.

The depth of quenching layer is an important technical requirement, which has a great impact on the quality of goods. The depth of quenching layer mainly depends on the frequency of heating power supply of medium frequency heating furnace. The higher the frequency, the smaller the penetration depth, and the shallower the direct heating layer and quenching depth. The frequency of quenching heating power supply can be divided into medium frequency and high frequency.

During the operation of the medium frequency heating furnace, the induction coil flows through a large medium frequency current to heat the surface of the workpiece. Usually, the heating time of the workpiece is only a few seconds, and the internal temperature of the workpiece has no time to rise. Then, the power is cut off, and water is sprayed quickly to cool the surface of the workpiece.