Tempering method of induction heating equipment

The induction heating quenching temperature (part surface temperature) is higher than the general quenching temperature because the induction heating speed is fast and the superheat is large, which makes the critical point of the metal rise quickly. The main purpose of induction quenching and tempering of heating equipment is to reduce the quenching stress. To avoid quenching cracks, sometimes tempering is also to reduce the hardness to meet the technical requirements of parts. Tempering generally includes furnace tempering, induction tempering and self-tempering.

1. induction tempering

Induction heating tempering requires the surface temperature, surface hardness, power, heating time and hardness gradient of the hardened layer of the induction heating equipment.

1. Traditional tempering

Disadvantages of traditional tempering heating: long hours, reason: the external heating body is heated by heat conduction and radiation, so there is enough time for heat to be conducted to the inside of the steel, and the temperature is uniform.

2. Modern induction heating

The advantages of induction heating equipment: short time, reason: and the traditional tempering heating method is essentially different, that is, induction heating is the use of induction eddy current to self-heat the steel surface.

1. Use another set of suitable low-frequency power supply and inductor for tempering, and now this method is widely used.

Secondly, using the original quenching heating power supply, under the original inductor equipment, induction tempering is carried out by reducing the power. The advantage of this method is that the quenching and tempering process is completed in one loading and unloading. Disadvantages: occupying quenching Station, reduce quenching productivity.

Tempering in 2. furnace

General use box furnace tempering, box furnace is the disadvantage of long tempering time, low tempering temperature.

3. self-tempering

1. Advantages: a set of tempering equipment is omitted.

2. Self-tempering is only applicable to parts with sufficient waste heat in the core of the parts after being heated by induction heating equipment. The waste heat should be evenly transmitted to all points of the quenching layer. Otherwise, the hardness of each area after self-tempering on the quenching surface of the parts is inconsistent, and even some areas are not self-tempered.

Advantages of choosing induction heating equipment

Traditional heating methods, such as oxyacetylene combustion, coal combustion, carbon combustion, wood combustion, etc., have disadvantages: long heating time, thick heating oxidation layer; slow start (preheating for about half an hour), slow heating, environmental pollution, heat loss is large, but also can not meet the requirements of fast.

The induction heating equipment can heat the metal in a few seconds, the operation is very simple, just turn on the water and electricity can be used, without preheating, can be a key to start, can be overall heating or local heating, heating speed, heat loss is small.

The heating temperature and time are controllable, no open flame, environmental protection and non-toxic, and can be heated continuously for 24 hours.

The induction heating equipment only takes a few seconds, the standby energy consumption is low, about 15W, and the traditional manual heating takes about 1 hour.

It can be seen that your choice of high-frequency induction heating equipment is conducive to improving work efficiency, saving electricity, improving product quality, and enhancing market competitiveness.