The intermediate frequency furnace is a power supply device that converts the power frequency 50HZ alternating current into an intermediate frequency (300HZ or more to 1000HZ), converts the three-phase power frequency alternating current into a direct current, and then converts the direct current into an adjustable intermediate frequency current, and supplies the capacitor. And the intermediate frequency alternating current flowing through the induction coil generates high-density magnetic lines in the induction coil, and cuts the metal material contained in the induction coil to generate a large eddy current in the metal material. Since the principle of medium frequency induction heating is electromagnetic induction, its heat is generated in the workpiece itself. The average worker can use the medium frequency electric furnace to carry out the continuous work of the forging task ten minutes after going to work. The professional workers do not need to burn the furnace and seal the furnace in advance. . Since the heating method has a high heating rate, the oxidation is extremely small, the oxidation burning loss of the intermediate frequency heating forging is only 0.5%, the oxidation burning loss of the gas furnace heating is 2%, the coal burning furnace reaches 3%, the intermediate frequency heating process material, each Compared with coal burning furnace, tons of forgings can save at least 20-50 kg of steel raw materials. Medium frequency furnace heating speed, medium frequency furnace production efficiency, medium frequency furnace oxidation decarbonization less, medium frequency furnace extended mold life, medium frequency furnace working environment superior, medium frequency furnace to improve workers' labor environment and company image, medium frequency furnace without pollution, medium frequency furnace low consumption Energy, medium frequency furnace melting speed, medium frequency furnace power saving effect, less burning loss, low energy consumption, medium frequency furnace self-mixing function, melting temperature and metal composition uniform, medium frequency furnace electric heating working environment, medium frequency furnace starting performance, Both the empty furnace and the full furnace can achieve 100% start-up.
In the metallurgical industry, the intermediate frequency furnace is customarily referred to as an industrial furnace that heats the metal to a forging temperature, including a continuous heating furnace and a chamber heating furnace. The heating furnace for metal heat treatment is also referred to as a heat treatment furnace. A furnace that heats the ingot before the initial rolling or makes the internal temperature of the ingot uniform is called a soaking furnace. Broadly speaking, the furnace also includes a soaking furnace and a heat treatment furnace. With the advancement of smelting technology, people gradually referred to the intermediate frequency melting furnace as the intermediate frequency furnace.
Continuous heating furnaces include push-type furnaces, step-type furnaces, rotary-bottom furnaces, and split-type furnaces, etc., but it is customary to refer to push-type furnaces. Continuous heating furnaces are mostly used to heat metal billets before rolling, and a few are used for forging and heat treatment. The main features are: the billet continuously moves in the furnace according to the rhythm of rolling, and the furnace gas also flows continuously in the furnace; in general, the temperature of each part of the furnace is different under the condition of the section size, variety and output of the furnace material. The temperature of the metal in the furnace does not substantially change with time but only varies along the length of the furnace.
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