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Induction coil of medium frequency induction furnace

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 The induction coil of the medium frequency heating furnace is the inductor of the medium frequency furnace. As the load of the medium frequency heating furnace, a rectangular copper tube is wound into a spiral shape according to a certain number of turns. Through the alternating current, an induced magnetic field is generated to achieve the purpose of heating the metal. The induction coil of the medium frequency heating furnace has a great influence on the heating effect. Next, I will briefly introduce the basic knowledge of the induction coil, I hope it will be helpful to everyone. 1. The induction coil heating of the medium frequency heating furnace follows the following electromagnetic induction effects: ring effect, skin effect, sharp corner effect, proximity effect. 2. The function of the induction coil of the medium frequency heating furnace is to transfer the induction current and then achieve the purpose of heating the workpiece. The induction coil is an important par...

What are the effective principles of intermediate frequency induction furnace heating?

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 A medium frequency induction furnace is a metal induction heating equipment, which is widely used in metal thermal processing in various industries, such as heating before forging, casting heating, metal quenching and tempering heating, hot stamping heating, hot extrusion heating, etc. In the medium frequency induction furnace, the metal workpiece is put into the inductor coil of the medium frequency induction furnace and the frequency conversion current is generated through the medium frequency induction power cabinet and sent to the induction coil. This frequency conversion current with a certain frequency flows in the spiral copper tube of the induction coil, Produce alternating magnetic field. According to the right-hand rule of middle school physics, induced currents (eddy currents) with the same frequency and opposite directions will be generated inside the metal workpiece. According to Joule Lenz's law due to the flow of eddy currents, a certain amount of heat will be ge...

How to check the system of medium frequency induction heating equipment

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Medium frequency induction heating equipment  has a wide range of applications in the fields of diathermy, smelting, quenching, welding, etc. However, due to the large power of the equipment, electronic components are prone to malfunction due to overheating, so to eliminate these malfunctions, how to heat the medium frequency induction heating Does the equipment perform a system inspection? 1. Power supply: Use a multimeter to check whether there is electricity behind the main circuit switch (contactor) and control fuse, which will rule out the possibility of disconnection of these components. 2. Rectifier: The rectifier uses a three-phase fully controlled bridge rectifier circuit, which includes six fast fuses, six thyristors, six pulse transformers, and a freewheeling diode. There is a red indicator on the quick-acting fuse. Normally, the indicator is retracted inside the shell. When the quick-acting blows, it will pop up. Some quick-acting indicators are tight. When the quic...

What are the advantages of medium frequency induction furnaces?

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A medium frequency induction heating furnace is a power supply device that converts 50HZ AC power into medium frequency (from 300HZ to 1000HZ). Since the principle of medium frequency induction heating is electromagnetic induction, its heat is generated in the workpiece itself. Ordinary workers use a medium-frequency electric furnace after going to work. The continuous work of the forging task can be carried out in ten minutes, without the need for professional furnace firing workers to perform furnace firing and sealing work in advance. Due to the fast heating speed of this heating method, there is very little oxidation. The oxidation burning loss of the medium frequency heating forging is only 0.5%, the oxidation burning loss of the gas furnace heating is 2%, and the coal-burning furnace reaches 3%. The medium frequency heating process saves materials. Compared with coal-fired furnaces, a ton of forgings can save at least 20-50 kilograms of steel raw materials. The medium frequency...

Why does the lining of the medium frequency induction furnace peel off?

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In industrial furnaces, especially in kilns that use unshaped refractory materials as the lining, lining spalling is one of the key factors that cause the kiln to stop and shorten the service life. In the following, an intermediate frequency induction furnace is taken as an example to analyze in detail the reasons for the spalling of the induction furnace lining and countermeasures. Analysis of the mechanism of lining spalling defects 1. Flaking off the furnace lining caused by water vapor At 100°C and standard atmospheric pressure, the specific volume of water is 0.00104344m3/kg (liquid), 1.6736m3/kg (steam). Therefore, the volume expands 1618 times after changing from water to water vapor. If the moisture content of the furnace lining material is too high or damp, the preforms and coil slurry are newly replaced and the moisture is not completely baked and drained. When the furnace lining is knotted and sintered, the excessive temperature rise will cause the crucible The...

Aluminum alloy smelting method and process flow

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 The smelting methods used in the domestic aluminum industry generally include batch smelting and semi-continuous smelting. The batch smelting method refers to a smelting method that takes one smelting time as a cycle, from the beginning of furnace loading, melting to the end of refining and downturns. This method is most suitable for the production of finished alloys with higher quality requirements but not too large batches to ensure the accuracy and uniformity of the chemical composition. The semi-continuous smelting method refers to the same alloy as a production cycle, each time the output is only one-half to one-third of the total melt in the furnace, and then a little more new charge than the above is added to continue melting. Generally, pure aluminum products, 6063 building materials products, and alloy products with recycled waste as the main charge are all smelted by this method. The typical melting process of wrought aluminum alloy is as follows: furnace preparation →...

How to solve the abnormal noise of the medium frequency furnace?

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 Shandong Huaxin Electric Furnace Co., Ltd.   not only provides customers with high-quality products but also provides comprehensive product after-sales service and consultation on production operations. Before the medium frequency furnace is used, the induction coil of the medium frequency furnace needs to be knotted, that is, the lining is knotted. After the lining is knotted, the oven is carried out. At this time, abnormal noise will sometimes occur. One of the reasons is that the temperature is not raised according to the oven process, and the temperature is too fast, and the furnace lining thermally expands and bursts, which makes noise. The general idea to solve the problem is to reduce the heating rate and strictly implement the oven process. Secondly, the inductor coil of the medium frequency electric furnace is not well insulated, which will cause inter-turn ignition and abnormal noise. The solution is to handle the insulation. In addition, if there is debris...

Medium frequency electric furnace selection model

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 With the continuous development of the manufacturing industry, new materials and new processes are constantly being used, and the requirements for the selection of medium-frequency electric furnace models are also constantly improving. For medium-frequency electric furnaces, there are strict requirements in terms of function, energy conservation, and environmental protection. As a result, the reliability, technological advancement, and after-sales service of medium-frequency electric furnaces have higher standards. There are some principles to pay attention to when choosing the model of the medium frequency electric furnace. In other words, before determining the power and manufacturer of the medium frequency electric furnace, the following conditions and factors about the medium frequency electric furnace must be considered: 1. The medium-frequency electric furnace is energy-saving and environmentally friendly, with an average power consumption of about 600kW.h per ton. It i...

Introduction of medium frequency aluminum melting furnace

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  Aluminum metal material is different from steel material and is a non-magnetic material. In the medium frequency induction heating, the mode of increasing the induced current is used to heat and melt the metal aluminum through a large current. This high-current heating mode makes the metal aluminum heating temperature and evenly distribute the heat. If you want to maintain the expected life and quality of aluminum, the heating temperature of the medium frequency aluminum melting furnace is crucial for melting aluminum. The medium frequency aluminum melting furnace of Shandong Huaxin Electric Furnace Co., Ltd. has uniform heating, stable operation, and can provide accurate temperature control. It is purchased by many large aluminum production companies. The medium frequency aluminum melting furnace uses three-phase alternating current to melt aluminum through a frequency conversion device and a coil load. During the melting process, pure aluminum will sink and the impurities on...