What is a medium frequency induction furnace?

The working frequency of the medium frequency induction furnace is between 100 and 10000 Hz, and it is widely used for heating and smelting non-ferrous and ferrous metals. The medium frequency induction furnace has the advantages of high thermal efficiency, fast heating speed, short heating time, less alloy element burning loss, wide melting material, low environmental pollution, and accurate control of heating temperature and smelting composition.

1. System composition of medium frequency induction furnace:

The medium frequency induction furnace system is composed of the transformer of the power supply part, the medium frequency power cabinet of the medium frequency power supply part, the induction coil of the furnace body part, the closed cooling tower of the cooling part, the auxiliary transmission part, the hydraulic part, and the PLC control part.

2. Heating principle of medium frequency induction furnace:

The medium frequency induction furnace is mainly composed of a frequency conversion device and an induction coil. The frequency conversion device converts the power frequency 50Hz alternating current into a medium frequency 100Hz---10000H alternating current, rectifies the three-phase power frequency alternating current into direct current, and then turns the direct current into adjustable The medium-frequency current is supplied by the medium-frequency alternating current flowing in the capacitor and the induction coil, which generates high-density magnetic lines of force in the induction coil, and cuts the metal material contained in the induction coil, which generates a large eddy current in the metal material.

The frequency conversion device and induction coil of the medium frequency induction furnace generates eddy currents in the heated metal material. This eddy current also has some properties of the medium frequency currents, that is, the free electrons of the metal itself flow in the resistive metal body to generate heat. For example, if a metal cylinder is placed in an induction coil with alternating medium frequency current, the metal cylinder is not in direct contact with the induction coil, and the temperature of the energized coil itself is already very low, but the surface of the cylinder is heated to redness or even Melting, and this redness and melting speed can be achieved only by adjusting the frequency and the strength of the current. If the cylinder is placed in the center of the coil, then the temperature around the cylinder is the same, and the heating and melting of the cylinder will not produce harmful gas or bright light to pollute the environment. The basic electromagnetic induction of the medium frequency induction furnace principle, the whole heating principle is designed around the various electromagnetic effects of the electromagnetic to design the medium frequency heating furnace heating.

3. Heating characteristics of the medium frequency induction furnace:

The medium frequency induction furnace can work continuously for 24 hours. Using the principle of electromagnetic induction, the metal material in the alternating magnetic field quickly induces a large eddy current, so that the temperature of the metal material is heated until it is melted, and the metal material is quickly heated locally or completely.

IF induction furnaces rarely cause problems. If there is a problem, 90% is caused by insufficient water pressure or water flow. It is recommended to use an internal circulating water system, which is a closed cooling tower, to cool the medium frequency heating furnace. This is economical and cost-effective.

The medium frequency induction furnace can design the heating cycle according to productivity. The heating speed is designed according to the heating power, heating temperature, and weight of the heated workpiece. The heating speed can be as fast as 1 second and can be adjusted arbitrarily.

The medium frequency induction furnace has a wide heating range, and can have various forms of heating methods. It can heat a variety of workpieces (replaceable induction coils according to the shape of the workpiece), such as end heating and overall heating.

It is very convenient to replace the inductor, that is, the furnace head, for the medium frequency induction furnace and the replacement of the inductor can be completed within a few minutes.

The operation of the medium frequency induction furnace is simple, the power-up and down only need to rotate the power knob and the whole operation can be learned in a few minutes.

Quick start, heating can be started after water and electricity.

The medium frequency heating furnace belongs to direct heating. It generates heat inside the metal without the heat loss of radiant conduction heating, so it consumes less electricity, less heat loss, less than friction, and less energy consumption than other similar products.

The medium frequency induction furnace has good heating performance, good heating uniformity, and high overall effect. The heating of the medium frequency electric furnace is very uniform (you can also adjust the density of the induction coil, so that each part of the workpiece can obtain the required temperature waste.

The medium frequency induction furnace has various protection functions to reduce the use of faults and the power is adjustable. Stepless adjustment of output power protection: with alarm indications such as overvoltage, overcurrent, overheating, water shortage, etc., and automatic control and protection

The medium frequency induction furnace is safe and reliable. It is equipped with alarm indications such as overvoltage, overcurrent, overheating, and water shortage, and is automatically controlled and protected. No high voltage, safe operation for workers.

4. Application range of medium frequency induction furnace:

A medium frequency induction furnace is used for forging and rolling

Wheel forgings, ring forgings, shaft forgings, cylinder forgings, gear forgings, stainless steel forgings, large flanges.

The hot upsetting of standard parts and fasteners, such as heating of tools such as tempering, forging, and extrusion.

A medium frequency induction furnace is used for smelting including the smelting of steel, gold, silver, copper, and aluminum, especially in the foundry industry.

Medium frequency induction furnace for heat treatment

Heat treatment of various hardware tools and hand tools. Such as pliers, wrenches, screwdrivers, hammers, axes, etc.

High-frequency hardening crankpins, sprockets, camshafts, valves, various rocker arms, rocker shafts of various auto parts and motorcycle parts; various gears, spline shafts, transmission axles, various High-frequency quenching treatment for small shafts and various shift forks.

Modulation and heat treatment of shafts and gears of various electric tools.

A medium frequency induction furnace is used for welding:

Welding of cemented carbide tools for machining. Such as the welding of cutting tools such as turning tools, planers, milling cutters, reamers, etc.

Welding of mining tools, such as the welding of "one" drill bits, heads, various shearer picks, and various roadheader picks.

Welding of various woodworking tools, such as the welding of various woodworking planers, milling cutters, and various woodworking drills.