Comparison and Analysis of Energy Consumption between Medium Frequency Electric Furnace and Power Frequency Coreless Furnace

According to the 2009 data, the total capacity of electric furnace equipment in the country is about 20 million kilowatts, and the power consumption is more than 20 billion degrees, accounting for 8% of the national power generation. Therefore, energy conservation is the primary task of the electric furnace occupation. Medium frequency induction melting furnace It is one of the effective process equipments for modern casting professional smelting and heat preservation, and it is also the primary energy-consuming equipment. How to reduce the power consumption of induction melting furnace and reduce the production cost are the concerns of electric furnace manufacturers and users.

The non-induction melting furnace is mainly divided into a power frequency coreless induction melting furnace (power frequency is 50, hereinafter referred to as power frequency furnace), and the intermediate frequency has no sensation melting furnace (power frequency is 150-8000, hereinafter referred to as intermediate frequency furnace). The frequency furnace is mainly used for smelting and heat preservation of black and non-ferrous metals. Because of its mature technology, it has been widely used in casting industry. The intermediate frequency furnace is mainly used for steel and alloy steel, smelting of cast iron. In the smelting process, from metallurgy From the point of view, there is no difference between most of the melting processes, power frequency and intermediate frequency furnaces. Production experience also indicates that the melting processes of the two melting furnaces can be better controlled, but in some cases, melting The quality of the liquid will be affected by the frequency selection. In terms of furnace function,

The power frequency furnace and the intermediate frequency furnace have the following differences. 1 The intermediate frequency furnace has high power density and high productivity. That is, under the same mixing force and the same capacity, the intermediate frequency furnace can input 3 times the power of the power frequency furnace, in other words, The same power intermediate frequency furnace size is only one-third of the size of the power frequency furnace. In the larger furnace, because of the influence of the current and voltage of the inductor, the input power of the intermediate frequency furnace is about the input power of the power frequency furnace. Therefore, the average power consumption of the intermediate frequency furnace is lower than that of the power frequency furnace. 2. The intermediate frequency furnace can empty the furnace material during each smelting, and it is easy to replace the type of molten metal, which can be melted quickly, does not need to be melted, and is convenient to use. The furnace needs to leave some residual molten iron for the melting of the furnace 4, otherwise it will use the frit. 3. Under the same productivity conditions, the medium frequency furnace is small in capacity, so the floor space is small and the amount of lining material is small. Low operating cost 4. High reliability of medium frequency furnace operation and improved equipment utilization. 5. Medium frequency furnace has small mixing force compared with power frequency furnace, metal scouring is small, and lining life is long. In recent years, following thyristor intermediate frequency With the development of power technology, large-scale high-power intermediate frequency furnaces have been launched relatively quickly, and more and more The use of households has a tendency to gradually replace small and medium power frequency furnaces. Now compare and analyze the energy consumption of power frequency furnaces and medium frequency furnaces, and supply necessary technical data as a reference for feasibility analysis and scheme selection. In the case of the two factors affecting the power consumption of the two furnaces, furnace capacity, daily output, frequency and power density, furnace electrical frequency and thermal efficiency, and so on.

For more information about the intermediate frequency electric furnace, diathermy furnace and induction furnace of Kunshan Wantai Electric Furnace Co., Ltd., please contact Xiaobian.

Medium frequency electric furnace, diathermic furnace, induction