Induction melting furnace(WhatsApp:008618853692119)

 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 part of

 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

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 quick-ac

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

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 abs

 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 → cha

 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 between

 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 is eq

  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 the

  　　 The inductor of the medium frequency diathermy furnace is designed according to the length of the heated workpiece and the diameter of the workpiece, so the inductor has lengths and shorts. But in general, the medium frequency diathermy inductor is generally relatively long (referring to the axial direction of the heated workpiece), and its purpose is to ensure that the heating temperature and the temperature difference between the core and the surface meet the requirements under the condition of the heating workpiece tempo unchanged. There are basically two types of lining assembly for medium frequency heating inductors, one is knotted lining, and the other is assembled lining. Whether it is knotted lining or fabricated lining, long-term work under high temperature will change (mainly thermal expansion and contraction and oxidation). If used improperly, the heating material will collide and squeeze the furnace lining phenomenon, so the use of the furnace lining has a certain p

  Medium frequency electric furnace is commonly used equipment in the field of heat treatment. Medium frequency electricfurnace is mainly composed of four parts. Power supply and electrical part: power supply equipment includes high-voltage or low-voltage switchgear, medium frequency power supply (medium frequency generator set or thyristor inverter), power conversion switch, compensation capacitor and medium frequency control cabinet (distribution console in front of the furnace), etc., The electrical part of the large medium frequency furnace also includes a crucible leak alarm system. Furnace body part: medium and small medium frequency furnaces are equipped with two furnace bodies. One is used for production and the other is spare. The furnace body includes a furnace cover, an inductor, a crucible, a furnace body bracket, etc. Transmission device: The transmission device includes mechanical or hydraulic devices such as the movement of the furnace cover and the tilting and re

  1. Check before starting the mediumfrequency electric furnace : Check the waterway and circuit before starting each time. Make sure that all water pipes are unblocked, and check the circuit for any abnormalities such as loose screws. 2. Turn on the medium frequency electric furnace: turn on the medium frequency electric furnace cabinet power supply, press the control power supply, the control power indicator light is on, close the main circuit switch, and then control the power supply, so that the DC voltmeter should display negative voltage. Then slowly set the power, turn the potentiometer to a large value, and observe the electric meter, the DC voltmeter indicates whether it increases.   When the DC voltage crosses zero, the three meters of medium frequency voltage, DC voltage, and active power increase at the same time, and an medium frequency sound is heard, indicating a successful start. The active power can be rotated to the positioner to the required power. When the DC volt

  The user's main load is an medium frequencyfurnace for smelting, which mainly produces castings such as motor casings. A 400kVA, 10kV/0.4kV transformer is used for power supply. 1. According to the actual measurement on site, the actual electricity consumption of users is as follows: under no-load conditions, the voltage on the user side is 250V; under full load, the voltage on the user side is 235V; under full load, the electrical power used is 600kW; under full load, the electrical power used is The factor is 0.97 ahead; when operating at full load, the current consumption is 910A. 2. Harmonic control equipment, using the medium frequency furnace harmonic control of Science and Technology Electric for harmonic control. Its main technical indicators are: the maximum compensation current can be 400A; the rated voltage is 200/380V; the effective output power is 100kVA; the DC side bus voltage is 450VDC; the switching frequency is 10kHz. For the power quality before and after

  Electric furnace is a heating furnace that converts the electric energy in the furnace into heat to heat the workpiece. Compared with fuel furnaces, the advantages of electric furnaces are: the atmosphere in the furnace is easy to control, and can even be vacuumed; the material is heated quickly, the heating temperature is high, and the temperature is easy to control ; The production process is easier to realize mechanization and automation; good labor and hygiene conditions; high thermal efficiency; good product quality. Electric furnaces in the metallurgical industry are mainly used for smelting, heating and heat treatment of iron and steel, ferroalloys, and non-ferrous metals. Industrial-scale electric furnaces appeared at the end of the 19th century. Since the 1950s, the demand for metallurgical products has increased rapidly, and electricity costs have decreased with the development of the power industry. The proportion of electric furnaces in metallurgical furnace equipment h

    1. Energy saving, high efficiency and environmental protection. According to the requirements of the national mandatory standard "Power Transformer Energy Efficiency Limits and Energy Efficiency Grades", in the process of power grid construction, transformers have played a very important role. Power transformers are key electrical equipment for power transmission, and transformer self-consumption accounts for 30% to 40% of grid losses. On the one hand, it can effectively reduce the energy consumption and noise during operation. On the other hand, it should minimize the use of raw materials such as copper, iron, oil, and insulating parts to avoid excessive waste of resources. The power saving effect is obvi ous, and the noise is low (<65dB). 2. Anti-harmonic. The special transformer for medium frequency furnace adopts a 12-pulse transformer to eliminate the harmonics of the grid-side winding. The harmonic is a sine wave, and each harmonic has a different frequency, a

  Refractory materials with a melting point higher than 1700°C for medium frequency furnaces are roughly classified into six categories: oxides, carbides, nitrides, sulfides, borides and chemical elements according to their chemical composition. In the medium frequency electric furnace, the chemical elements and carbides work under high temperature and oxidizing atmosphere, which are easily oxidized or dissolved in molten iron. Silicon carbide can be used to repair the tapping trough or feeding trough of the furnace, but it cannot be used as the lining material for induction furnaces due to its electrical conductivity. Sulfides, borides, etc. can be dissolved in or chemically react with molten iron, and are reduced by iron and carbon. They are not suitable for furnace lining materials. Among nitrides, silicon nitride (Si-3N4) and aluminum nitride, although they have good oxidation resistance, peeling resistance, and are not easily corroded by molten metal, they are expensive and ca

  The function of the water-cooled cable is to connect the medium frequency power supply and the induction coil. It is formed by twisting each diameter Φ0.6-Ф0.8 copper wire. For a 500 kg medium frequency electric furnace, the cable cross-sectional area is 480 square millimeters, and for a 250 kg medium frequency smelting electric furnace, the cable cross-sectional area ranges from 300 to 400 square millimeters. The outer hose of the water-cooled cable uses a pressure rubber hose with a pressure resistance of 5 kg, which is filled with cooling water. It is a part of the load circuit. It is subjected to tension and torsion during work. It tilts with the furnace body and twists, so it is easy to be flexible after a long time. The connection is broken. The breaking process of the water-cooled cable generally involves cutting off most of the parts first, and then quickly breaking the unbroken part during high-power operation. At this time, the medium frequency power supply will generat

The principles of copper alloy melting include: cathode copper (electrolytic copper), scrap generated during processing, and outsourcing scrap copper. To achieve a reasonable alloy composition ratio, the ratio of raw materials is directly related to the ingot product. The key to quality and product cost. In the copper alloy melting process, according to the alloy composition ratio, suitable metal raw materials are selected, melted and refined at high temperature, and alloy melts with qualified composition are obtained. Melting and purification, through the use of chemical reaction or physical absorption, sedimentation and other refining measures to degas, to ensure the quality of the metal added to the metal. Melting metal, the solid raw material is converted into liquid by high temperature heating, so that there is enough fluidity to fill the cavity during manufacturing. In order to achieve the goal of reducing production costs, the following principles are generally adopted: To p

  The medium frequency electric furnace is mainly used to replace the previous medium frequency generator set in the field of induction melting and induction heating. The medium frequency generator set has a large volume, a long production cycle, and large operating noise. Moreover, it is a fixed frequency equipment. The capacitor must be adjusted at any time during operation to maintain the maximum output power. This not only adds a lot of medium frequency contactors, but also operates It's also very cumbersome. Induction heating is the use of electromagnetic induction to generate electric currents inside the heated material (ie, the workpiece), and rely on the energy of these eddy currents to achieve the purpose of heating. The basic composition of induction heating system includes induction coil, AC power supply and workpiece. According to different heating objects, the coil can be made into different shapes. The coil is connected to the power supply, and the power supply prov

In metal smelting, the most commonly used is the medium frequency smelting furnace . It is composed of medium frequency power supply and medium frequency furnace body, equipped with hydraulic system, dust removal system, capacitor cabinet and water cooling cable. Its function is to melt all kinds of metals. It should have the following basic characteristics: 1. The medium frequency melting furnace has high melting efficiency, which basically guarantees melting one furnace of molten steel every hour. The power saving effect of smelting furnace is good, and the power consumption per ton should be about 600 degrees. The medium frequency power supply and furnace body have compact structure and strong overload capacity; 2. Due to the fast heating speed of medium frequency smelting furnace, the overall heating temperature is uniform, the burning loss is less, and the metal composition is uniform; 3. The medium frequency smelting furnace has less magnetic flux leakage, low temperature around