Induction Heating Furnace
What is Induction Heating Furnace?
An induction furnace is an electrically powered furnace that uses electromagnetic induction to melt and heat metal. The furnace has a copper tubing coil that passes an alternating current through it, creating a magnetic field. When metal is placed inside the coil, the magnetic field causes electric currents to form within the metal, known as eddy currents. These currents heat the metal until it melts.
Why Choose Us
Production equipment
We produce a complete set of equipment, induction power supply, furnace body, and cooler for 100kw-20000kw medium frequency induction melting furnaces and induction heating furnaces, which can meet the casting, forging, and heat treatment needs of metals in different fields.
Our Company
The company not only has industry-leading technological level, but also has a complete pre-sales and after-sales service process. At present, the cumulative number of customers served by the company has exceeded 3000, and our good reputation among customers has enabled us to continuously expand into new customers.
Production Market
We have successfully won the trust and support of over 2000 customers worldwide, and have successfully sold to multiple countries and regions such as Southeast Asia, the Middle East, North Africa, Eastern Europe, Central Asia, and South America, becoming the preferred brand for many metal processing enterprises in these regions.
Our Certificates
In 2023, Hexinda Electric Furnace received a Copyright Registration Certificate for its computer software used in manufacturing, processing, and production operation control systems. Additionally, we hold two Utility Model Patent Certificates.
The induction furnace consists of a non-conductive crucible containing metal to be melted and surrounded by a circle of copper wire. A strong alternating current flows through the wire. The coil produces a fast reverse magnetic field that penetrates the metal. The magnetic field induces eddy current in the metal through electromagnetic induction, that is, the circular current eddy current flows through the resistance of large metal and heats it by Joule heating. In ferromagnetic materials such as iron, the material may also be heated by hysteresis, causing the molecular magnetic dipole to reverse in the metal. Once melted, eddy current will cause violent stirring of the melt to ensure good mixing.
One advantage of induction heating is that heating is generated in the furnace rather than by burning fuel or other external heat sources, which is very important in applications with pollution problems.
The operating frequency ranges from the practical frequency (50 or 60 Hz) to 400 kHz or higher, usually depending on the molten material, the capacity (volume) of the furnace and the required melting rate.
Generally speaking, the smaller the melt volume, the higher the use frequency of the heating furnace; This is due to the depth of the skin, that is, the distance below the surface of the conductor through which the alternating current can penetrate. For the same conductivity, the higher frequency has a shallower surface depth, that is, less penetration into the melt. Lower frequencies can produce agitation or turbulence in the metal.
A one ton preheating iron melting furnace can melt the cold material to tapping readiness within one hour. The power supply ranges from 10 kW to 42 MW, and the melt size is 20 kg to 65 tons of metal, respectively.
Types of Induction Heating Furnace
There are several types of induction heating furnaces, each designed for specific applications and industries. Here are some common types:
Low-Frequency Induction Heating Furnace
This type of furnace generates an electromagnetic field with a frequency of around 50 Hz. It is typically used for applications that require high power, such as annealing, hardening, and the forging of large metal components.
Mid-Frequency Induction Heating Furnace
This type of furnace generates an electromagnetic field with a frequency between 100 Hz and 10 kHz. It is typically used for applications that require moderate heating power, such as brazing, soldering, and surface hardening.
High-Frequency Induction Heating Furnace
This type of furnace generates an electromagnetic field with a frequency between 10 kHz and 400 kHz. It is typically used for applications that require low heating power but very precise temperature control, such as welding, melting, and heat treatment of small components.
Ultra-High Frequency Induction Heating Furnace
This type of furnace generates an electromagnetic field with a frequency above 400 kHz. It is typically used for applications that require extremely precise temperature control and very low heating power, such as medical device manufacturing and semiconductor processing.
Vertical Induction Heating Furnace
This type of furnace is designed for heating and melting metal in a vertical position. It is commonly used in the casting and forging of large metal components.
Horizontal Induction Heating Furnace
This type of furnace is designed for heating and melting metal in a horizontal position. It is commonly used in the casting and forging of small to medium-sized metal components.
Modular Induction Heating Furnace
This type of furnace is designed to be modular and customizable, allowing for easy integration into existing manufacturing processes. It can be used for a wide range of applications, from heating small metal parts to large-scale heat treatment and forging.
5 Popular Applications Furnaces Are Known For
Induction Melting Furnaces Provide Fast Melting Rates At Maximum Efficiency. This allows companies like yours to get the best metal quality possible for your products.
But what are the different applications that induction melting furnaces can be used for? Here are five of the many applications that induction furnaces can be used for in your melting, heating, holding, and pouring operations.
Investment Casting. Induction melting is often used for investment casting because they come in a wide variety of air and vacuum furnaces. These furnaces work great for nearly all metals.
Precious Metals Melting. Steel is precious for many, but induction furnaces can also be used to melt precious metals such as platinum group metals. This allows them to be refined and used for jewelry manufacturing.
Copper Melting. Induction furnaces can be used to melt custom castings or casting large bronze structures. They're built to provide the melting you need for most copper applications with low metal loss and precise temperature control.
Alloy Manufacturing. Induction furnaces are popularly used in alloy manufacturing for optimal uniformity and flexibility. Those in alloy manufacturing companies can count on induction furnaces to provide them with the correct amount of induction stirring each and every time so every product comes out exactly the same.
Aluminum Melting. Aluminum melting is another popular application used for induction melting. Because induction furnaces are energy efficient, they're considered optimal for converting alumina into pure aluminum and then into aluminum alloys. This is because this process consumes a lot of energy and so the more energy that can be saved the better.
The Principle of Selecting Induction Heating Furnace for Forging
When choosing an induction forging furnace for forging, the first thing to consider is productivity and energy saving. This mainly depends on the power of the variable frequency power supply, the frequency of the power supply, and the rationality of the inductor design. Whether the power frequency is reasonable or not is directly related to the electrical efficiency of the heating furnace and the quality of the processing technology. The selection of power frequency mainly considers two factors: ensuring electrical efficiency and improving cross-sectional temperature uniformity.
The process requirements are mainly heating temperature, temperature distribution, etc., which depend on the matching of the inductor design impedance and power supply and the level of mechanization and automation.
The induction heating furnace for forging has advanced technical and economic indicators, such as low energy consumption, material saving, low operating costs, good working conditions, etc.; the equipment must have high reliability; it must be easy to use and maintain, and the operation must be safe and reliable.
The correct selection and purchase of a high-quality induction heating furnace for forging is the prerequisite for safe and efficient production. So, when purchasing an induction heating furnace for forging, you should first ask a professional manufacturer for help. Luoyang Judian is a professional manufacturer of induction heating furnaces from China. We are glad to help you.
The Difference Between Medium Frequency
The induction heating power supply originated in the 1950s and has now become a more popular heating power supply in industrial production. Its heating products are green and environmentally friendly, without waste smoke, exhaust gas, noise, or dust. So what is the difference between medium frequency induction heating machine and high frequency induction heating machine?
Medium Frequency Induction Heating Power Supply
The frequency is relatively low, the projection depth of the induced current is large, and the heat transmission depth is relatively high. For large-size workpieces, the penetration is good. The frequency range of the medium frequency induction heating machine is generally between 1kHz and 10kHz, most of which are used for large tempering, quenching, tempering, heating, annealing of modular gears, large diameter thick wall pipes, large workpieces and large diameter shafts, and hot forging, smelting, and quenching of large layer depths.
Super Audio Frequency Induction Heating Power Supply
The working frequency band is mainly concentrated between 6KHz~60KHz. Compared with the equipment of 1~10KHz, this frequency band works without operating noise, and the current transmission depth is above 2mm. It is suitable for brazing and small size (typically such as round rods below 35mm)hot forging, hardening operation with a layer depth of about 2~4mm.
High Frequency Induction Heating Machine
The working frequency of high frequency induction heating machine is mainly concentrated between 60KHz~200KHz, and the current penetration depth is less than 2mm. It is suitable for brazing, hot forging of small size (typically round bars below 15mm), and quenching operations with a layer depth of about 1~2mm.
Our Factory
Shandong Hexinda Electric Furnace Co., Ltd. was established in 2014. After 10 years of development, the company has become a production-oriented company that integrates research and development, production, sales, and after-sales service, and has passed ISO9001 quality system certification. We produce a complete set of equipment, induction power supply, furnace body, and cooler for 100kw-20000kw medium frequency induction melting furnaces and induction heating furnaces, which can meet the casting, forging, and heat treatment needs of metals in different fields. The company not only has industry-leading technological level, but also has a complete pre-sales and after-sales service process.
FAQ
We're well-known as one of the leading induction heating furnace manufacturers and suppliers in China. If you're going to buy customized induction heating furnace, welcome to get more information from our factory.
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