15KW Medium Frequency Induction Melting Furnace


Rated Power Output:15KW

Frequency Range:1-20KHz

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KEXIN 15KW Medium Frequency Induction Melting Furnace

What is 15KW Medium Frequency Induction Melting Furnace Advantages?

 -Induction Melting Furnacehas wide frequency range from 1KHZ to 20KHZ, which can be adjusted according to the specific size of the workpiece or the depth of heating, with large range of adaptation. Considering the melting capacity, electromagnetic stirring, heating efficiency, noise and other factors to design an induction loop and matching compensation capacitor so that to determine the size of the output frequency.

– With traditional medium frequency parallel-oscillating structure, induction melting furnaceis simple load matching, high efficiency and high utilization of equipment.

– Reverse process, which makes reliability increased greatly under the state of large power, and which makes the device developed greatly in high-power field so that to realize the 100% load.

– High efficiency energy-saving. With the whole power range, high power factor and power efficiency, compare to silicon controlled medium frequency, it can save at least 20% energy.

– Induction melting furnace is small size, light weight, completed models, and there is a large range to choose. It not only can be used in industrial production, but also available in small melting test in school institute.

– Commonly used for melting steel, stainless steel, copper, gold, silver and other materials. There is a wide range of melting capacity, from a few kilograms to hundreds of kilograms.Besides,  This induction melting furnace not only can be used in industrial production, but also available in small melting in school inst

– Medium Frequency melting furnace has a good performance in electromagnetic stirring, which can evenly melting the metal in temperature and structure aspect.Also, it is conducive to scum, reduce impurities.

– Compare to silicon controlled medium frequency, it can save at least 20% energy.

15 25kw induction furnace 1

Description of Medium Frequency Induction Furnace

The development of the medium frequency induction furnace and its superiority has injected new vitality into the casting production. Also, the medium frequency furnace has the advantages of small size, light weight, high efficiency and favorable environment. As a result, the advantages make it a rapid replacement for coal-fired furnaces, gas furnaces, oil-fired furnaces and ordinary resistance furnaces.

It is a new generation of metal heating equipment. The medium frequency induction melting furnace has high electrical efficiency and thermal efficiency, short melting time, less power consumption, less land occupation, lower investment, flexible production and easy implementation of process automation. Comparing to other cast iron melting furnaces, it has attracting remarkable development in recent years and is widely used in cast iron production.


15KW Medium Frequency Induction Melting Furnace Detail

1.Medium frequency melting induction furnace has excellent protections, with over-voltage, over-current, overheatingand lack of water function.

2.It is light weight with fast heating and high efficiency.

3.Special power saving, saving about 60% with the load power compare to traditional the tubemachine.

4.Induction melting furnace is easy and install, suitable for all kinds of occasions where metal heating is required.


15KW Medium Frequency Induction Melting Furnace
Model KXZ-15
Rated Power Output 15KW
Frequency Range 1-20KHz
Input Power Three Phase 380V±20% 50/60Hz
Output Current 3-22A
Output Voltage 70-550V
Load Continuing Rate 100% Continuing work in 24h
Cooling Water Temperature ≤40℃
Water Connection 1 inlet and 1 outlet
Packing Method Wooden Box
Application Available for various heating treatment, melting, forging, welding, brazing, hardening, etc.

The Working Principle of Medium Frequency Induction Melting Furnace


Medium Frequency induction furnace is mainly composed of a power source, an induction coil and a crucible made of refractory material inside the induction coil. The crucible contains metal charging, which is equivalent to the secondary winding of the transformer.


When the induction coil is connected to the AC power source, an alternating magnetic field is generated in the induction coil, and the magnetic flux cuts the metal charging in the crucible. Then an induced electromotive force is generated in the furnace. Since the charging itself forms a closed loop, the secondary winding is characterized by only one turn and is closed. Therefore, an induced current is simultaneously generated in the charging, and when the induced current passes through the charging, the charging is heated to cause it to melt.


It is heating metal by electromagnetic induction principle.

How exactly does induction hardening furance work?

In a basic induction heating setup, a solid state radio frequency power supply sends an AC current through an inductor (often a copper coil), and the part needs to be heated (the work piece) will be placed inside the inductor. The inductor serves as the transformer primary, and then the part needs to be heated therefore becomes a short circuit secondary. When a metal part is placed within the inductor and enters into the magnetic field, inside the part, the circulating eddy currents will be induced. These eddy currents generate precise and localized heat without any direct contact between the part and the inductor.


In the process of induction heating the material, there is therefore no contact between the inductor and the part, and neither are there any combustion gases. The material needs to be heated can be located in a setting isolated from the power supply, that is to say, it can be submerged in a liquid, covered by isolated substances, in gaseous atmospheres or even in a vacuum.

What is induction heating?

The heating method known as induction heating occurs when we please an electrically conductive material in a varying magnetic field. So induction heating is a rapid form of heating. Its current is induced directly into the heated par. Also, induction heating is a non-contact form of heating.


Can you braze glass or ceramics with induction?

If you work with glass or ceramics, a compact vacuum furnace is a great solution for brazing. You’ll get quick, clean heat with very precise temperature control.


What makes up a typical induction heating system?

A typical induction heating system consists of the induction heating power supply, an induction heating coil and a water-cooling source and several internal components inside the power supply. The induction heating power supply sends alternating current through the induction coil, thus generating a magnetic field. Hence place a work piece within the coil and enters the magnetic field, then it induces eddy currents within the workpiece. Furtherly it’s generating precise and localized heat without any physical contact between the induction coil and the work piece.



Will induction heating increase my utility bills?

Not likely. Induction heating is a very effective, efficient means of heating. Most of our customers who are switching to induction for the first time see their utility bills go down.


When is it better to use the indirect heat of an induction furnace instead of direct induction heat?

Yeah, we get that question a lot. It depends on the geometry of your part and how you want to heat it. If you have a part with simple geometry and your process calls for heating a specific area of the partg. We suggest that direct induction heating will generally be preferable. However, if you need to heat the entire part, or if the part has a complex shape. Then you’ll achieve better results with an induction heating vacuum furnace.

Heat treatment (surface quenching)

It is mainly through the heating of the workpiece and other treatments to change the hardness of the metal material.

1.Avariety of hardware tools, hand tools, such as pliers, wrenches, hammers, axes, screwdrivers, scissors (garden shears) and other quenching.

2. Avariety of cars, motorcycle accessories,such as crankshaft, connecting rod, piston pin, sprocket, aluminum wheel, valve, rocker shaft, transmission half shaft, small shaft, fork, etc.

3. Various power tools. Such as gears, shafts.

4. Machine tool industry. Such as machine tool bed, machine tool guides and other quenching.

5. Avariety of hardware metal parts, machined parts, such as shaft, gear (sprocket), cam, chuck, fixture, etc. Quenching.

6. Metal mold industry. Such as small molds, mold accessories, mold holes, etc. Quenching.


Non-ferrous and ferrous metals melting.
Precious metal melting, like gold, sliver and platinum, etc.
Semiconductor material melting.
Specialized steel, iron and copper melting.
Metal alloy melting, like aluminum alloy, zinc alloy and copper alloy,etc.

Welding (Brazing, Silver Welding, Brazing)
It mainly melts the solder by heating to a certain temperature, thereby connecting two metals of the same material or different materials.

1.Welding of various hardware tools: welding of diamond tools, grinding tools, drilling tools, alloy saw blades, carbide turning tools, milling cutters, reamers, planers, woodworking drills, etc.;

2.Welding of hardware machinery parts: hardware sanitary products, refrigeration copper fittings, lighting accessories, precision mold fittings, metal handles, egg beaters, alloy steel and steel, steel and copper, copper and copper equivalent metal or dissimilar metal silver welding, Brazing;

3.Composite bottom welding is mainly used for three-layer brazing of round, square and other shaped flat stainless steel pot bottoms and aluminum sheets. Also,itcan be used for other metal plane brazing.

4.Electric kettle (electric coffee pot) heating plate welding is mainly used for brazing between stainless steel flat bottom, aluminum sheet and various shapes of electric heating tube.

Medium Frequency Induction Melting Furnace Heating (Hot Forging, Hot Matching)

Hot forging

It is mainly after the workpiece is heated to a certain temperature (different heating temperature according to the material), forging the workpiece into a punch, forged bed or other forms other shapes.

For example: case, watch embryo, handle, mold attachment, kitchen tableware, crafts, standard parts, fasteners, machining of mechanical parts, copper locks, rivets, steel brazing, hot extrusion of brazing tools, etc.

Thermal cooperation

It mainly refers to the heating of the metal between different kinds of metals or between metal and non-metal, and the two are connected by the principle of thermal expansion or thermal melting.

For example: the copper core of the computer radiator and the aluminum sheet, the buried value welding of the speaker net, the composite of the steel-plastic tube, the sealing of the aluminum foil (toothpaste skin), the rotor of the motor, the sealing of the electric heating tube and the like.

Annealing (tempering, quenching and tempering)

1.Annealing in various stainless steel industries. Such as stainless steel pots, cans of annealing, annealing and annealing of the water tank, stainless steel tubes, stainless steel cutlery, stainless steel cups, etc.

2.Annealing of various other metal workpieces. Such as golf clubs, clubs, copper locks, hardware copper fittings, kitchen knives, blades, aluminum pans, aluminum drums, aluminum radiators and various aluminum products. 5. Metal melting: gold, silver, copper, iron, aluminum, etc. and metal (vacuum) smelting, powder metallurgy sintering and metal melting.

Packing Details

Export standard packing, inner carton outer wooden box and double protection



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