Ferrous Metal Induction Melting Furnace

Scrap Iron Melting Furnace

Steel/iron Induction melting furnaces are very popular in steel mills and foundries. They are being used for holding and then smelting ferrous metals, sponge iron, nonferrous and many other steel scraps.They are used to replace cupolas since the cupolas end to emit a lot of dust and other dangerous pollutants.


• Usage: Steel/iron Melting Furnace for foundry and steel plant
• Power: 600KW-30000KW Capacity :1-60tons
• Energy consumption: 500-600 kwh/t

COOLDO Scrap steel  Iron Melting Furnace Presentation:


Medium frequency Cast iron melting furnace manufactured by COOLDO, have ideal multiple protection functions – over current;over voltage; insufficient water pressure; high water temperature; low voltage and phase loss. The advantages of our melting equipment are: high energy savings; low grid impact; high melting rate; small oxidation loss; uniformity of metallic composition; easily controlled temperature; excellent insulation qualities etc.

Steel melting furnace types:


There are mainly two types of furnace body for your to choose, steel frame furnace body and aluminum frame furnace body .Click Here To know the Difference bewteen the steel shell and aluminum shell induction furnace:

The feature of the cooldo steel melting  furnace body comes with the advantage as followings:

1), Cooldo Iron Melting Furnace are available in capacities ranging from 1.0T to 60 Tons.
2), These Steel Induction melting  furnaces are ruggedly built with heavy structural steel for trouble free operation under harsh melt shop conditions.
3), Thick walled rectangular coil sections are used to minimize coil losses. The higher coil efficiency ensures energy savings and higher productivity.
4), Special coil insulation prevents inter turn sparking.
Coil supports maintain inter turn gap and enhance the rigidity of The coil assembly

Steel  Frame Cast iron/steel  melting Machine

1. Melting capacity range from 0.1 ~ 70 tons.
2. There are several protection functions to ensure safety.
3. Magnetic yoke construction help generate great melting efficiency

• Usage: Cast iron/Scrap steel/Stainless steel..etc foundry
• Power: 50KW-30000KW
• Energy consumption: 550-680 kwh/t

Aluminum Frame Pig iron/steel  Smelting Furnace

1. Melting capacity range from 0.1 ~ 5 tons.
2. There are several protection functions to ensure safety.
3.Open type furnace hearth reduces moisture to extend furnace lining life

• Usage: Cast iron/Scrap steel/Stainless steel..etc foundry
• Power: 50KW-3000KW
• Energy consumption: 550-680 kwh/t

Small Aluminum Frame Cast iron/stainless steel  melting furnace

1. Melting capacity range from 0.1 ~ 200kg.
2.  Square Type Shape Furnace body with Motor Tilting Or Manual Tilting.
3.Open type furnace hearth reduces moisture to extend furnace lining life

• Usage: Cast iron/Scrap steel/Stainless steel..etc foundry
• Power: 50KW-200KW
• Energy consumption: 550-680 kwh/t

Standard configuration of The KGPS Power Supply:

● Turn on and turn off the smelter easily, and power failure will not affect the service life of electric furnace.
● Adopt constant power to control the circuit, maintain constant power while melting, and keep higher
melting rate.
● Set up over voltage, over current and water deficient protector in the system to monitor the operation.
● The electric motherboard adopts CAD technology, integrated circuit board, low-fault-rate, easy-manipulating, effort less maintenance.
● Zero voltage starts up softly, high initial power, don´t impact on the electric network.
● Apply to melt ferrous metal and non-ferrous metal like copper, aluminum, zinc, steel, iron, stainless steel etc.

power supply 1

Melting Onsite of the iron/steel melting furnace


Ferrous Metal Melting Furnace

KGPS series electric iron melting furnace:
MODELInput Voltage
Rate Power KWDC Voltage VWorking
CapacityPower Consumption
GW-0.05-100/1380(6 Pulse)10050010007500.05800
GW-0.15-100/1380(6 Pulse)10050010007500.15/0.12820
GW-0.25-160/1380(6 Pulse)16050010007500.25/0.2790
GW-0.3-250/1380(6 Pulse)25050010007500.3770
GW-0.5-250/1380(6 Pulse)250500100015000.5770
GW-0.75-400/1380(6 Pulse)400500100015000.75770
GW-1-500/1380(6 Pulse)500500100015001750
GW-1-750/1380/690(6 Pulse)750500/880100015001720
GW-1.5-1000/0.5690(6 Pulse)100088050026001.5700
GW-2-1500/0.5690(6 Pulse)150088050026002675
GW-3-2500/0.51000(6 Pulse)2500125050032003590-640
GW-4-3000/0.51000(6 Pulse)3000125050032004590-640
GW-15-10000/0.251000(24 Pulse)100001250250340015550-600
GW-20-12000/0.251000(24 Pulse)120001200250340020550-600
GW-25-14000/0.251000(24 Pulse)140001200150~200340025550-600
GW-30-16000/0.21000(24 Pulse)160001200150~200340030550-600
GW-40-18000/0.21000(24 Pulse)180001200150~200340040550-600
GW-50-20000/0.21000(24 Pulse)200001200150-200340050550-600

Safety  System of Cast Iron Melting Induction Furnace:

Over voltage protection:  machine shuts down when input voltage is over 380V. Over voltage light will turn on and buzzer will sound continuously. Alarm and light shut off automatically when voltage goes below 380V.

Overheat protection: if sensor detects heat radiator temperature is over 55°C, machine will shut down, overheat light will turn on and buzzer will sound continuously. Increase water pressure or lower water temperature until alarm goes off itself.
Overcurrent/malfunction protections: machine will shut down, indicator light turned on and buzzer sounds continuously if one of these situations occurs:
One of the machine parts becomes overheated
Interfering signal detected
Short circuit between workpieces and induction coils
Machine malfunctions
Induction coils touching each other
Input voltage is too low
Low water pressure protection: if water pressure goes below standard pressure, machine will shut down, water protection light will turn on and buzzer will sound continuously.

Installation & maintenance of cooling water:


The interior power element and high-frequency transformer of induction heating equipment will produce a lot of heat in working, and the induction coil directly is near the heat source and also suffers the high temperature, all these mentioned parts need the effective cooling of circular water, otherwise, they would be damaged, therefore, the circular cooling water is, as it were, the life of induction heating equipment. The installation and maintenance of cooling water is elaborated from following points:
I.Function of cooling water
1.To cool down the induction coil;
2.To cool down the interior power element and high-frequency transformer of induction heating equipment.

II.Requirements for cooling eater
1.Water temperature of inlet: <40℃;
2.Pressure: >0.2Mpa;
3.Flow: It may be controlled  based on the power of equipment, and the max water temperature of outlet shall not exceed 70℃;
4.Water quality: Clean demineralized water.

**Particular explanation: The quality of cooling water is very important, if the material like sediment, rust, fiber, etc. is in the water, they will seriously block up the cooling pipelines of equipment, reduce the water flow and impair the interior power element of equipment, burn through the pipeline, and even cause the shutdown; what’s more, the high-hardness water or limestone water includes a great deal of ions like calcium, magnesium, etc., if the equipment works long time, lots of water scales will be produced in the interior radiator and cooling pipeline of equipment, they can stop up the water circle and influence the cooling efficiency, likewise, they also can burn and damage the interior power elements of equipment.

 Click here to know the solution of the water cooling system.