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单词 induction heating
释义
induction heating

Physics
  • The heating of an electrically conducting material by eddy currents induced by a varying electromagnetic field. Induction heating may be an undesirable effect leading to power loss in transformers and other electrical devices. It is, however, useful for melting and heat-treating and in forging and rolling metals, as well as for welding, brazing, and soldering. The material to be heated is inserted into a coil through which an alternating current flows and acts as the short-circuited secondary of a transformer. Eddy currents induced in the material within the coil cause the temperature of the material to rise.


Chemical Engineering
  • A means of heating an electrically conducting material by electric currents induced in the material by an alternating magnetic field. Electric heating is accomplished with an electric alternating current of high value and low magnitude voltage. It is used for melting and heat treating of certain metals as well as for welding, soldering, and in brazing. The material is heated by inducing eddy currents in the material, causing the temperature to rise.


Electronics and Electrical Engineering
  • Heating caused by induced eddy currents in a conducting material when subjected to a varying magnetic field. The varying magnetic field is commonly produced by an alternating current in a coil, known as the load coil, surrounding the load to be heated.

    One type of furnace uses induction heating for melting metal: the advantages of this type of heating are that the heat is generated within the metal itself, and the eddy currents set up circulatory movements in the molten metal that have the effect of stirring the melt. Compare dielectric heating.


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