What is the principle of an induction heater? How much is an induction heater?

In daily life, many people do not know induction heaters, and have not even heard of them, but if you are engaged in mechanical manufacturing, you must be familiar with induction heaters. So, what is the principle of the induction heater? How much is the induction heater? Let's take a look at it together. How much is an induction heater? What is an induction heater? An induction heater (inductor for short) is an inductive coil that can satisfy various heating processes by reasonably distributing the induction magnetic field. It is a key component to realize various induction heating processes. It is a necessary component, and its performance is directly related to the quality of the heating process. The inductor must be manufactured according to the heating process. Due to the variety of induction heating processes, the specifications of the inductor are also correspondingly various. The principle of induction heater Induction heater is also called induction heating power supply, also known as induction heating equipment, is a general term for all heated workpieces involving induction heating, including: induction heating power supply, induction heating equipment, bearing heater, bearing induction heating It also includes the induction heating power supply used in industrial pipe preheating, evaporation coating, and copper brazing. Its basic working principle is to use alternating current to generate alternating magnetic fields. This alternating magnetic field makes the metal conductors in it Eddy current is generated inside, which makes the metal workpiece heat up quickly. Generally speaking, the effect of heating is determined by frequency, current and magnetic field. In the process of induction heating, only the metal part of the heated workpiece increases in temperature, and the induction heater itself also has heat. Most of the inductors need to be cooled by cooling water during use, and the non-metallic part of the heated workpiece does not generate heat. . All metal workpieces can be heated with induction heaters, such as cast iron, motor short-circuit rings, automobile hubs, metal bars, pipes, bolts, large turbine bolts, wind turbine blades, bearings, gears, pulleys, couplings, etc. . If you want to learn more about induction heaters, you may wish to take a look at Kehua's official website, which has detailed text and video explanations. Advantages of induction heaters 1. Induction heating does not require overall heating of the workpiece, and can selectively heat local parts, so as to achieve the purpose of less power consumption, and the deformation of the workpiece 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. As a result, the surface oxidation and decarburization of the workpiece are relatively slight, and most workpieces do not need gas protection. 3. The surface hardened layer can be regulated by adjusting the operating frequency and power of the equipment as needed. As a result, the martensite structure of the hardened layer is finer, and the hardness, strength and toughness are relatively high. 4. The workpiece after heat treatment by induction heating has a thick toughness area under the surface hard layer, and has better compressive internal stress, which makes the workpiece's fatigue resistance and breaking ability higher. 5. The heating equipment is easy to install on the production line, easy to realize mechanization and automation, easy to manage, can effectively reduce transportation, save manpower and improve production efficiency. 6. One machine can be used for multiple purposes. It can not only complete quenching, annealing, tempering, normalizing, quenching and tempering and other heat treatment processes, but also complete welding, melting, hot assembly, hot disassembly and diathermy forming. 7. It is easy to use, simple to operate, and can be turned on or off at any time. And no preheating required. 8. It can be operated manually, or semi-automatically and fully automatically; it can work continuously for a long time, or it can be used randomly when it is used. It is conducive to the use of equipment during the power supply valley electricity price discount period. 9. High utilization rate of electric energy, environmental protection and energy saving, safety and reliability, good working conditions for workers, advocated by the state, etc. How much is an induction heater? Disadvantages of induction heaters Nothing is perfect, and it also has some disadvantages. For example, the equipment is relatively complex, the cost of one-time investment is relatively high, the interchangeability and adaptability of induction components (induction coils) are poor, and it is not suitable for application on some workpieces with complex shapes. Although there are some shortcomings, its comprehensive indicators are good, and the advantages are obviously more than the disadvantages. Therefore, induction heating is a main process of metal processing. It is an ideal choice for replacing coal heating, oil heating, gas heating, electric furnace heating, electric oven heating and other heating methods. How much does an induction heater cost? In general, the price of an induction heater is around 1,000 yuan, but in different regions and brands of induction heaters, the price will be different. If you want to buy an induction heater, then you might as well go directly to Kehua to have a look. There are quotations for different models and brands, and you will definitely be able to choose what you want. Selection criteria of induction heaters The selection of induction heaters and induction heating power sources generally requires the following parameters: First: the shape of the workpiece to be heated, the outer dimensions, and the weight of the workpiece to be heated. Second: the material composition of the heated workpiece (generally induction heating, only for metal conductors and non-metal conductors such as graphite). Third: the time and target temperature required for the heating of the workpiece to be heated. Once the above three points are clarified, the induction heating equipment can be selected, including matching power. How much is an induction heater? In the above, the editor gave you a brief introduction. In fact, the price of induction heaters is not fixed. It depends on the brand and model. The Kehua recommended above is recommended for everyone. You can go and see.