Induction Heating Equipment: Market oriented, technology driven and quality based

Kehua teaches you how to efficiently solve the problem of non-induction of high-frequency heating coils

by:Kehua     2022-08-07
We all know that if the high-frequency heating coil is not inductive, it will not work properly. If it cannot work normally, it will definitely bring losses. Therefore, an efficient method is needed to solve this problem, then let Kehua reveal the secret for you. How to efficiently solve the problem of non-induction of high-frequency heating coil! Kehua teaches you how to efficiently solve the problem of non-induction of high-frequency heating coil. . Induction heaters include an electromagnet through which high-frequency alternating current is passed. If the object has a large magnetic permeability, it may also generate heat due to the loss of magnetic hysteresis. The AC frequency used depends on the size and metal type of the object to be heated, the degree of coupling between the heating coil and the object to be heated, and the penetration depth. The power supply for induction heating is generally low-voltage high-current alternating current. The workpiece to be heated is placed in an electromagnetic coil driven by alternating current, usually with a capacitor, set as an LC circuit to generate imaginary power, and the alternating magnetic field generates eddy currents in the workpiece. Background on the origin of high-frequency coil heating: Michael Faraday is generally credited with discovering the phenomenon of induction in 1831, although the work of Francesco Zantedeschi in 1829 may have foreseen it. Faraday found that the electromotive force generated on a closed loop is proportional to the rate of change of the magnetic flux through any surface enclosed by that path, which means that when the magnetic flux through the surface enclosed by the conductor changes, a current will flow in any closed conductor . This applies when the magnetic field itself changes or when a conductor moves through the magnetic field. Electromagnetic induction is fundamental to the operation of generators, induction motors, transformers, and most other electrical equipment. The induction coil of the intermediate frequency induction furnace or the high frequency induction furnace is made of hollow copper tube wound in a spiral shape. Coil ignition occurs between the turns of the copper tube or between the copper tube and the yoke. Due to the failure of the insulation, a short-circuit discharge is formed under the action of the voltage, and crackling sparks can be seen at light (commonly known as ignition), In severe cases, a continuous arc (commonly known as arcing) occurs. The ignition of the induction coil will bring a lot of harm to the equipment, which is mainly reflected in the following aspects: 1. Seriously reduce the operating efficiency of the equipment, increase the power consumption and time of smelting/heating; 2. The large current caused by arcing can easily burn the thyristor and other Important power components; 3. Equipment failure caused by arcing or furnace wear brings great safety hazards to operators; 4. Increases equipment failure rate, improves operation and maintenance costs, reduces enterprise production efficiency, and causes enterprises to lose high profits. How to make a high-frequency induction heating coil: The inductor (induction coil) in the induction heating equipment is both water and a large induction heating current (up to 2400A at the maximum), which directly affects whether the machine can be used normally. Find a professional manufacturer to order, generally, the induction coil made by yourself is easy to short-circuit and catch fire because it does not meet the requirements. In addition, when installing the induction coil, the clamp plate and nut of the inductor must be made of copper materials. All iron materials, including the stainless steel hose clamps that fasten the inlet and outlet pipes of the inductor, should be connected with the output end and the part where the inductor passes current. Keep a distance of more than 50MM to prevent being heated. Note that the induction coil cannot have a short circuit, and the metal workpiece cannot be in contact with the copper tube of the induction coil. Otherwise, it will cause a fire, and the machine will not be able to start work normally due to its own protection, and the machine and the induction coil will be damaged in severe cases. Kehua teaches you how to efficiently solve the problem of non-induction of high-frequency heating coils. After learning Kehua's method, solving the problem of non-induction of high-frequency heating coils will be a piece of cake for you, and it is not worth mentioning at all. No longer have to worry about what to do if the high-frequency heating coil does not sense!
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