What is high frequency electromagnetic induction heating equipment and what is its role?
With the continuous development of my country's industrial technology, people's quality of life continues to improve, and high-frequency electromagnetic induction heating equipment has also entered our life circle, but it may be unfamiliar to friends who are not familiar with industrial equipment, but , it doesn't matter, Kehua will solve it for you next. Introduction Electromagnetic induction heating, or induction heating for short, is a method of heating conductive materials such as metallic materials. It is mainly used for metal thermal processing, heat treatment, welding and melting. As the name suggests, induction heating is the use of electromagnetic induction to generate a current inside the heated material, and rely on the energy of these eddy currents to achieve the purpose of heating. The basic components of an induction heating system include an induction coil, an AC power source and a workpiece. Depending on the heating object, the coil can be made into different shapes. The coil is connected with a power source, and the power source provides alternating current to the coil, and the alternating current flowing through the coil generates an alternating magnetic field passing through the workpiece, and the magnetic field causes the workpiece to generate eddy currents to heat. According to the frequency of the alternating current output by the equipment, induction heating technology can be divided into five categories according to the working frequency: low frequency induction heating, medium frequency induction heating, super audio frequency induction heating, high frequency induction heating and ultra-high frequency induction heating. High-frequency electromagnetic induction heating equipment Principle Induction heating surface quenching is a quenching method that uses the principle of electromagnetic induction to generate a high-density induced current on the surface layer of the workpiece, rapidly heats it to austenite state, and then rapidly cools to obtain a martensite structure. When an alternating current of a certain frequency passes through the induction coil, an alternating magnetic field with the same frequency as the current changes will be generated inside and outside it. When the metal workpiece is placed in the induction coil, under the action of the magnetic field, an induced current with the same frequency as the induction coil and the opposite direction will be generated in the workpiece. Because the induced current forms a closed loop along the surface of the workpiece, it is often called an eddy current. This eddy current converts electrical energy into heat, rapidly heating the surface of the workpiece. Eddy currents are mainly distributed on the surface of the workpiece, and there is almost no current passing through the workpiece. This phenomenon is called the surface effect or the skin effect. Induction heating uses the skin effect to rapidly heat the surface of the workpiece to the quenching temperature by means of the current thermal effect. The induction coil is made of copper pipe, and cooling water is passed through it. When the surface of the workpiece is heated to a certain temperature in the induction coil, it is immediately cooled by water spray, so that the surface layer can obtain a martensite structure. Uses of high frequency electromagnetic induction heating equipment 1. Various types of wire quenching, strip quenching, steel wire annealing, wire and cable copper wire and aluminum wire continuous annealing, stainless steel tube annealing, quenching and tempering and other heat treatment production lines in steel production enterprises, can be equipped with automatic closed-loop temperature control system , to achieve precise temperature control. 2. Heat treatment (quenching, tempering, annealing, normalizing, quenching and tempering, bluing). Surface, inner hole, partial or overall quenching of all kinds of hardware tools, electric, hydraulic, pneumatic components, steam, motorcycle parts and other mechanical metal parts. Such as: quenching of hammers, knives, scissors, pliers and various shafts, cams, sprockets, gears, valves, ball studs, ductile iron, and quenching of dovetail grooves of machine tool guide rails. 3. Diathermic forming. Hot forging of metal bars, heating of red punching, standard parts, fasteners, mechanical spare parts, hardware tools, hot upsetting and hot rolling of straight shank twist drills. 4. Brazing. Welding of various carbide heads, turning tools, milling cutters, planers, reamers, diamond saw blades and saw teeth; welding of abrasive tools, drilling tools, cutting tools; composite welding of brass, copper, stainless steel and other metal materials. 5. Metal smelting: smelting gold, silver, copper, etc. 6. Other heating fields. The high-frequency electromagnetic induction heating equipment is good. The above are some related articles introduced by Kehua to our friends about what is high-frequency electromagnetic induction heating equipment and what its role is. High-frequency electromagnetic induction heating is a high-power density Equipment, through the thermal processing and heat treatment of metals, brings hope to the development of my country's science and technology industry, and brings convenience and beauty to our lives.