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The working frequency of medium frequency induction furnace is between 50~2000 Hz, and it is widely used for smelting nonferrous metals and ferrous metals.
Compared with other casting equipment, medium frequency induction furnace has the advantages of high thermal efficiency, short smelting time, less alloy element burnout, wide smelting material, low environmental pollution, and accurate control of the temperature and composition of molten metal.
The medium frequency furnace is a power supply device that converts 50HZ industrial frequency AC into medium frequency (300HZ to 1000HZ). The three-phase industrial frequency AC is rectified into DC, and then the DC is converted into adjustable medium frequency current to supply the medium frequency alternating current flowing through the capacitor and induction coil, generating high-density magnetic lines in the induction coil, cutting the metal material contained in the induction coil, and generating large eddy currents in the metal material.
Intermediate Frequency Induction Equipment Power Supply Parameters:
Power Supply Technical Parameters | ||
No. | Type | Parameter |
1 | Power Specification and Model | KGPS3750-0.3S BL1-1 |
2 | Input Voltage | 660V/6 Phases |
3 | Rectification Method | 12-Phases Rectification |
4 | Input Power Frequency | 50Hz |
5 | Output DC Voltage | 891V |
6 | Output Intermediate Frequency Voltage | 3000V |
7 | Direct Current (Total) | 4208A |
8 | Output Frequency | 500Hz |
9 | Output Power | 3750KW |
10 | Power Factor | ≥0.90 |
11 | Primary Voltage of Transformer | 10KV |
12 | Secondary Voltage of Transformer | 660V |
13 | Secondary Voltage Fluctuation Value | ±5% |
Intermediate Frequency Induction Equipment Furnace Body Parameters
Furnace Body Technical Parameters | ||
No. | Type | Parameter |
1 | Rated Power | 3750KW |
2 | Rated Frequency | 300Hz |
3 | Rated Capacity | 5T |
4 | Maximum Capacity | 5.5T |
5 | Maximum Melting Temperature | 1700ºC |
Noted: The above parameters are part of the 5t medium frequency melting furnace parameters for reference only.
For more details about Scope of Supply & Quotation, please contact us and we will give you a professional configuration & quotation based on your equipment requirements.
Steel-Shell Furnace Body
The Sanrui furnace body includes an open furnace body, furnace frame, furnace-tilting oil cylinder, rotating oil cylinder, induction coil, magnetic yoke, rubber hose, furnace port and furnace bottom fixed material, a complete set of stainless steel water inlet distributor, return water collector and clamps, including wall mounted inlet and outlet water distributor.
> Furnace structure:
The furnace structure consists of a furnace fixing frame and a furnace body, which adopt an integral skeleton structure.
> The tilting of the furnace body is achieved by rising two hydraulic cylinders on both sides of the furnace body. A set of tilting hydraulic cylinders with steel protective covers can protect the cylinder rod from dust and splashing metal.
> This furnace refers to internationally advanced furnace types and is determined based on computer analysis. With an increase in the aspect ratio, the power factor is improved and the electrical efficiency is enhanced.
> All of them are welded steel structures, and the outer periphery of the furnace body is fixed with magnetic yokes and movable frames as a whole. The structure is reasonable, the rigidity is good, and it is easy to maintain.
The full digital constant power control motherboard of the intermediate frequency power supply is placed in the isolated control room in front of the cabinet, and the working status is intuitively displayed and comprehensively displayed on the operation panel. The isolated control room does not require additional cooling.
The main power electronic components of the power cabinet are water-cooled, and the temperature rise inside the cabinet during operation will not affect the isolated control room. The selection of all electronic components on all electronic control circuit boards in the isolated control room is based on the high temperature level.
Control Transformer
The control transformer reduce the 660V voltage to the safe 220/110 volts. Even when the main circuit voltage fluctuates greatly, it can still provide stable voltage to the main control board.
In a series inverter, the coil load current is equal to the inverter output current, which is relatively small and basically is the active current; The load voltage is equal to the inverter output voltage times the quality factor Q, which is similar to the principle in long-distance transmission of high-voltage lines.
Therefore, the line loss is small, and the inverter side electrical efficiency is high, which can reach and maintain around 96%. At the same time, 100% of the current flows through the load coil and inverter.
What We Services
* Full design of the process and layout of the medium frequency furnace system;
* Design, manufacture, supply, installation, commissioning and function realization of the complete set of induction furnace system equipment;
* All kinds of construction projects required for induction melting furnace system equipment, including design data of various equipment foundations, pits, troughs, pipe trenches, houses, etc.;
* Full design, installation and commissioning of the power supply system, electrical automation control system, energy medium system, meter system, etc. involved in smelting equipment;
* Propose the requirements of fire protection, ventilation and air conditioning system, lighting system, safety system, grounding system (including possible lightning protection grounding, power supply grounding, electronic grounding system) in the smelting furnace, melting furnace and induction furnace area.
* Organization, management and coordination of project construction, equipment manufacturing and installation within the above scope;
* All automation software programming and system commissioning;
* Single equipment test run and linkage test run of each system;
* Production technical guidance during the load test run and trial production of each system;
* Provide all technical design data, production operation technical instructions, maintenance instructions, maintenance instructions, production technical know-how and personnel training.
What You Need To Provide
* General plan of the medium frequency furnace area of the steel foundry.
* Energy and power required for construction.
* Detailed design and construction of equipment foundation and premises.
* Design, equipment supply, installation and commissioning of fire protection system, ventilation and air conditioning system, lighting system and safety system.
* Power medium required for the linkage test of the medium frequency furnace system.
Xi′an Sanrui Electric Furnace Co.,Ltd has decades of manufacturing experience in the furnace industry, has accumulated a lot of professional technology and production experience, and is located in Xi′an, the hometown of furnaces, Shaanxi Province.
As a professional steelmaking furnace manufacturer, SR Metal Tech focuses on the development, design and production of various Specifications of steelmaking electric arc furnaces, submerged arc furnaces, ladle refining furnaces, ferroalloy refining furnaces, And induction furnaces. And smelting furnace auxiliary equipment
Accessories: Water-cooled furnace cover, water-cooled cables, alloy
Additives, electric arc furnace regulators, refining furnace regulators, and various trolley furnaces, well-type, box-type resistance furnaces, etc for heat treatment.
