What is a medium frequency diathermy furnace what are the characteristics and uses?

What is the medium frequency diathermy furnace? What are the characteristics and uses?


In the metal parts production and processing industry, various types of metal heating, hot forging, quenching, annealing and tempering are used. The medium frequency diathermy furnace is a very common heating device. So what is the working principle of the medium frequency diathermy electric furnace and the medium frequency diathermy electric furnace? What are its characteristics and uses?

 
What is a medium frequency diathermy furnace?

The medium frequency diathermy furnace is simply a device that generates eddy currents on the metal surface by electromagnetic induction to melt the metal heat. The intermediate frequency diathermy electric furnace is composed of an intermediate frequency power supply cabinet, a capacitor cabinet, a diathermic furnace and the like. The medium frequency electric furnace works at a high voltage and a large current, and after the metal is melted into a liquid in the furnace, the temperature is between 1300 and 1600 ° C (iron). Medium frequency electric furnace is mainly used for melting and heat preservation of black and non-ferrous metals and alloys such as alloy steel, copper and aluminum, and also for melting of precious metals such as gold and silver. The metal cylinder is placed in an induction coil with alternating intermediate frequency current. The metal cylinder is not in direct contact with the induction coil. The temperature of the energized coil itself is already low, but the surface of the cylinder is heated to redness or even melt, and the hair is emitted. The speed of red and melting can be achieved by adjusting the frequency and current strength.

 


What is the working principle of the medium frequency diathermy furnace?

The control power supply of the intermediate frequency diathermy electric furnace is a power supply device that converts the power frequency 50HZ alternating current into an intermediate frequency (300HZ or more to 20K HZ), converts the three-phase power frequency alternating current into a direct current, and then converts the direct current into an adjustable one. The intermediate frequency current supplies an intermediate frequency alternating current flowing through the capacitor and the induction coil, generates a high-density magnetic line in the induction coil, and cuts the metal material contained in the induction coil to generate a large eddy current in the metal material. This eddy current also has some properties of the intermediate frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat.
Medium frequency diathermy furnace

Characteristics of medium frequency diathermy furnace

The medium frequency induction heating forging furnace is ultra-small, movable and covers an area of ​​only 0.6 square meters, which is convenient for use with any equipment;
It is very convenient to install, debug and operate.
It can reach the required temperature in a very short time, greatly reducing the oxidation of the metal;
The medium frequency heats the φ15 or more bar material, which is more diathery, more uniform, faster, and can work 24 hours a day;
Energy-saving and environmental protection, more uniform and rapid heat transfer, automatic feeding, greatly saving costs;
The furnace body is replaced to meet the different requirements of the overall heating or end heating of the bar.

◆ The length of the induction coil is usually 600mm or 800mm. When the material is coarse or long, the induction coil is even 1m long or more than 1m long, and 5-10 materials are heated. The induction coils are easy to replace, and different sizes of induction coils are used depending on the workpieces of different diameters.

◆ The output frequency is 1-10KHZ. According to the size of the heated workpiece, the induction coil and capacitor are designed to achieve different frequencies and adapt to the heating of different materials. When the material is fine, the heating frequency is higher, which can ensure the heat transfer and obtain higher heating efficiency; when the material is coarse, the frequency is lower, and the heat is ensured.

◆ Pneumatic feeding method, for a certain bar material, adjust the power of the equipment and the feeding rhythm, it can automatically launch the red bar for forging and pressing, which is very convenient to operate.

◆ Adopt IGBT device and adopt high efficiency combined resonance technology. Adopt low-inductance circuit arrangement and adopt large-scale digital circuit.

◆ Fast heating speed, high production efficiency, less oxidative decarburization, saving material and forging die cost. Since the principle of the intermediate frequency induction heating is electromagnetic induction, the heat is generated in the workpiece itself, and the ordinary worker can perform the continuous work of the forging task immediately after going to work with the intermediate frequency electric furnace. There is no need to worry about the waste of heated billets due to power outages or equipment failures. Because the heating method has a fast heating rate, the oxidation is extremely small, and each ton of forgings and the KGPS thyristor intermediate frequency furnace can save at least 20-50 kilograms of steel raw materials, which greatly saves electricity, and consumes 310 degrees of electricity per ton of steel. Compared with KGPS thyristor, the intermediate frequency saves 20%-30%. Because the heating method is evenly heated, the temperature difference of the core meter is extremely small, and the net side pollution, the power supply transformer does not generate heat, the substation compensation capacitor does not generate heat, and does not interfere with other equipment work. Reduce the power transformer capacity.

◆ Even heating, the core table temperature difference is very small, and the temperature control precision is high. Induction heating heat is generated in the workpiece itself, so the heating is uniform, and the temperature difference between the core and the core is extremely small. The application of a temperature control system allows precise temperature control to improve product quality and yield.

◆ The whole equipment is small and compact, which is very convenient to use in the forging machine hot and forging machine.

◆ Excellent working environment, no pollution, low energy consumption.


Use of medium frequency diathermy furnace


The new energy-saving medium-frequency induction heating diathermy forging furnace produced by Haituo can be used for continuous diathermy of regular round bars, square materials or other shape hair defects such as steel, stainless steel, copper and aluminum with diameter Φ12-80Φ; standard In the industry, stud heads are thick, nut forming, valve and lock industry copper parts thermoforming, etc.; can be used for overall heating of materials, but also for local heating of materials, such as end heating, heating in the middle part.