70KW Medium Frequency Induction Melting Equipment


Rated Power Output:70KW

Frequency Range:1-20KHz

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KEXIN 70KW Medium Frequency Induction Melting Equipment

What is 70KW Medium Frequency Induction Melting Equipment Advantages?

 70KW medium frequency induction melting equipment uniform heating, high temperature control accuracy, uniform heating, to ensure that the temperature difference between the core and surface of the heated workpiece is small, and the temperature can be accurately controlled through the temperature control system to ensure product repeatability.

70KW medium frequency induction melting equipment has low energy consumption and high pollution-free heating efficiency. Compared with other heating methods, it effectively reduces energy consumption, has high labor productivity, no pollution, and equipment meets environmental protection requirements.

70KW medium frequency induction melting equipment induction furnace body is easy to replace according to the size of the workpiece to be processed, different specifications of the induction furnace body need to be configured.

Each furnace body is designed with water and electricity quick-change joints, so that the furnace body replacement is simple, fast and convenient.70KW medium frequency induction melting equipment, complete melting equipment protection, the whole machine is equipped with water temperature, water pressure, lack of phase, overpressure, overcurrent, pressure/current limit, start overcurrent, constant current and buffer start, so that the melting equipment starts smoothly and protects Reliable, fast, stable operation.

70KW medium frequency induction melting equipment heating speed is fast, oxidation and decarburization is less. Because the principle of induction heating of medium frequency furnace is electromagnetic induction, the heat is generated by the workpiece itself.

This heating method has a fast heating speed, very little oxidation, and high heating efficiency. The repeatability is good, the metal surface is only slightly decolorized, and a slight polishing can restore the surface to mirror brightness, thereby effectively obtaining constant and consistent material properties.


70KW medium frequency induction melting equipment heating method smelts precious metals with high melting points such as platinum, palladium and gold. The medium frequency power supply can quickly heat and electromagnetically stir the metal to obtain a high temperature and highly uniform molten metal.


70KW Medium Frequency Induction Melting Equipment
Model KXZ-70
Rated Power Output 70KW
Frequency Range 1-20KHz
Input Power Three Phase 380V±20% 50/60Hz
Output Current 20-130A
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.


medium frequency induction melting and welding equipment is suitable for the smelting of nickel-based and special steels, precision alloys, high-temperature alloys, rare earth metals, active metals, copper and copper alloys, hydrogen storage materials, neodymium iron boron, magnetic materials, etc. in scientific research and production departments under vacuum or protective atmosphere and casting.

70KW Induction Melting Equipment

Medium Frequency Induction Melting Equipment Working Principle


The working principle of medium frequency induction melting Equipment is to put a metal cylinder in an induction coil with alternating intermediate frequency current. The metal cylinder does not directly contact the induction coil. 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.

A three-phase bridge-type full-control rectifier circuit is used to rectify the alternating current into direct current. After being smoothed by a reactor, it becomes a constant direct current source, and then through a single-phase inverter bridge, the direct current is inverted to a certain frequency (usually 1000 To 8000Hz) single-phase intermediate frequency current. The load is composed of an induction coil and a compensation capacitor, which are connected into a parallel resonance circuit.

Main features of intermediate frequency furnace?


1.  Very easy to install and operate
2. Ultra small size, light weight, movable, occupying less than  1 square meter
3. 24-hour uninterrupted melting capacity
4. Energy saving
5. It is convenient to replace the furnace body with different weights, different materials and different starting methods to meet various melting requirements
6. Using ultra-small intermediate frequency induction heating power supply, which is completely different from traditional intermediate frequency power supply
7. Good heating permeability and uniform temperature
8. The intermediate frequency magnetic field has a magnetic stirring effect on the molten metal, which is beneficial to uniform composition and scum
9. According to the recommended equipment and maximum melting capacity, the melting time per furnace is 20-30 minutes.


The basic composition of the melting furnace?


High frequency power supply (integrated or split), induction coil, crucible.
The basic composition of the intermediate frequency melting furnace:
Including intermediate frequency power supply, compensation capacitor box and furnace body, etc. According to different application requirements, it may also include infrared thermometers, temperature controllers and other devices: melting furnaces are divided into three types: overturned melting furnaces, top-out melting furnaces and fixed melting furnaces. According to the tipping method, the tipping smelting furnace can be divided into mechanical tipping furnace, electric tipping furnace and hydraulic tipping furnace.

Induction heating machine can also use for melting platinum, silver crucible, etc. It’s simple and easy, together working with smelting crucible, especially the graphite crucible and quartz crucible.


What are the advantages of the company’s products?


This product technology brings together the scientific research results of many domestic and foreign experts, and it has successfully converted and upgraded the technology from the tube technology to the transistor MOSFET technology IGBT module technology. All models are equipped with IGBT module technology to make the product stability better!

Heat Treatment (surface hardening, quenching, annealing, tempering). 

The heating device of the medium frequency furnace has the advantages of small size, light weight, high efficiency, excellent thermal processing quality and favorable environment. It is rapidly eliminating coal-fired furnaces, gas furnaces, oil-fired furnaces and ordinary resistance furnaces. It is a new generation of metal heating equipment. The intermediate frequency furnace is the main equipment of the foundry forging and heat treatment workshop. The stability, reliability and safety of its work are the guarantee for the normal stability of the flow-through casting forging and heat treatment production line. Intermediate frequency furnace has a good development prospect in the field of thermal processing. For example, it mainly produces forging pre-forging heating furnaces, diathermic furnaces and induction heating for: diathermy, rolling, forging, pipe bending, heat treatment (quenching), welding and other processes .


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 diamond/carbide saw blade,  diamond cutting tools, grinding tools and drilling welding.
Carbide cutting tools for machining welding. Such as turning and milling cutter welding.
Mining tools welding, such as  pillar gear drill bits, dovetail coal drill bits, drill rods riveting, all kinds of shearer.
The welding of wood working tools, such as woodworking planer, milling and drill.


Using forming and forging technology, there are very strict requirements on the temperature, degree of heat transmission, size, weight, etc. of the blank. The intermediate frequency induction forging furnace will greatly improve the product quality of forgings. Production cycle, improve the production environment of employees, and save raw materials.

Packing Details

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



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