Advantages of induction heating:
1) Induction heating does not need to heat the workpiece as a whole, but can selectively heat the part, so as to achieve the purpose of less power consumption, and the workpiece deformation is not obvious.
2) The heating speed is fast, which can make the workpiece reach the required temperature in a very short time, even within 1 second. Thus, the surface oxidation and decarburization of workpieces are relatively slight, and most workpieces do not need gas protection.
3) The surface hardening layer can be adjusted and controlled by adjusting the working frequency and power of the equipment as needed. Thus, the martensite structure of the hardened layer is fine, and the hardness, strength and toughness are relatively high.
4) After induction heating, there is a thick ductile area under the surface hard layer of the workpiece, which has better compressive internal stress, making the workpiece more resistant to fatigue and fracture.
5) The heating equipment is easy to install on the production line, easy to realize mechanization and automation, easy to manage, and can effectively reduce transportation, save manpower, and improve production efficiency.
6) One machine can be used for multiple purposes. It can complete quenching, annealing, tempering, normalizing, quenching and tempering and other heat treatment processes, as well as welding, smelting, thermal assembly, thermal disassembly and diathermal forming.
7) It is easy to use and operate, and can be started or stopped at any time. And there is no need to preheat.
8) It can be operated manually, semi automatically and fully automatically; It can work continuously for a long time, and it can also be used at random. It is conducive to the use of equipment during the preferential period of power supply low price.
9) High utilization rate of electric energy, environmental protection and energy conservation, safety and reliability, and good working conditions for workers are advocated by the state. wait.
Disadvantages of induction heating:
Nothing is perfect, and it also has some shortcomings. For example, the equipment is relatively complex, the cost of one-time investment is relatively high, and the interchangeability and adaptability of induction parts (induction rings) are poor, which is not suitable for application on some workpieces with complex shapes.
Although there are some shortcomings, its comprehensive indicators are good, and its advantages Obviously outweigh its disadvantages. Therefore, induction heating is a main process of metal processing at present. It is an ideal choice to replace coal heating, oil heating, gas heating, electric furnace heating, electric oven heating and other heating methods.