Electric induction furnace is an induction heating equipment for bar, round steel, square steel, billet, steel pipe, steel plate, and other metals. The heating temperature is generally no more than 1250 degrees, which is suitable for pre forging heating in the forging industry and metal quenching and tempering heating in the heat treatment industry.
1. Heating principle of medium frequency induction heating furnace
The relationship between the heating coil and the heated material (metal) of the electric induction furnace is the same as that of the coil on the primary and secondary sides of the transformer. The magnetic force line generated by the heating coil through the intermediate frequency current is concentrated on the heated object and induced by the electromagnetic, which generates vortex current, and the heated object will be heated.
According to the type and shape of metal, the proper frequency, power, heating time, holding time, coil shape of AC current can be selected to make the metal heating meet the heating process requirements.
2. Temperature distribution of medium frequency induction heating furnace
The uniformity of radial temperature of non-ferrous metals such as steel bar, aluminum bar, and copper bar in electric induction furnace depends on the correct selection of power frequency and heating time matching the diameter of the workpiece; The axial temperature is uniform and gradient temperature difference depends on the structure and heating mode of the sensor. The inductor structure of the electric induction furnace adopts a spiral heating coil, each group of multi-layer coils can control power independently to realize gradient heating. Generally speaking, an induction furnace is used to make induction penetration of metal materials for extrusion or forging.
3. The equipment of the electric induction furnace is composed of:
The intermediate frequency induction heating furnace consists of a feeding mechanism, mobile trolley, feeding mechanism, induction heating furnace, furnace cover mechanism, discharging roller and ingot carriage, operation control system, main circuit control system, and furnace transformer.
4. Technical parameters of electric induction furnace
⑴Power supply system: double rectifier 12 pulses 1600kw/500hz intelligent induction furnace power supply.
⑵ Heating varieties: carbon steel, alloy steel, high-temperature alloy steel, anti-magnetic steel, stainless steel, titanium material, aluminum alloy, copper alloy, etc
⑶ Main purpose: for the heat transmission forging of rod and round steel.
⑷ Material storage system: thick wall square pipe welded to form a storage platform with a slope of 13 °， 6-8 materials can be stored.
⑸ Feeding system: double clamp roller pneumatic pressure, continuous feeding, step-less speed adjustment of feed speed.
⑹ Discharging system: the quick discharging manipulator is composed of a gas-liquid force increasing cylinder, straight guide rail, open and close chuck, and PLC system.
⑺Sorting system: it is composed of an infrared thermometer, chain transmission, and guide cylinder.
⑻ Energy conversion: heating to 1050 ℃ per ton of steel, and power consumption 310-330 ℃.
⑼ Provide remote operation platform with touch screen or industrial control system according to the user's needs.
⑽ Specially customized human-machine interface, highly humanized operation instructions.
⑾ Full digital, high-depth adjustable parameters, so that you can control the equipment.
5. Features of medium frequency induction furnace:
⑴ The heating speed of the electric induction furnace is fast with little oxide scale. The medium frequency heating furnace uses the principle of electromagnetic induction, and the heat is generated by eddy current in the workpiece itself. It is especially suitable for precision forging.
⑵ The inductors of the electric induction furnaces are interchangeable. There are many kinds of heating equipment in the production process, so it is necessary to set up a variety of induction heaters with a common frame. At this time, the sensor exchange can be completed in a very short time through the unique total up and down water quick-change connector of the electric furnace and the new channel exchange mechanism developed by the electric induction furnace.
⑶ There are many kinds of feeding and discharging structures in the medium frequency induction furnaces. According to customers' different process requirements, the electric induction furnace is equipped with different feeding and discharging machines to form the optimized combination of equipment. The specific forms include continuous type, intermittent type, etc. The discharging forms include tilting type, direct tilting type, etc.
⑷ The whole medium frequency induction heating furnace system of the electric induction furnace can be equipped with an automatic feeding machine, discharging machine, discharging separator, and closed water circulation system according to the user's requirements.
⑸ The whole medium frequency induction heating furnace system of the electric induction furnace has multiple protections, including water temperature and water pressure alarm of cooling water circuit, and upper and lower limit alarm of temperature.
⑹ Stability of the whole medium frequency induction heating furnace system of the electric induction furnace. The continuous feeding of large bars can reduce the impact on the medium-frequency power supply. The closed-loop control of temperature is composed of the power supply to ensure that the head and tail of the return heating temperature are consistent, and the temperature difference between the core and the meter is small.
6. Cost of electric induction furnace
⑴ First of all, many manufacturers sell steel bar medium frequency induction heating furnace equipment on the market. If there are different manufacturers, the price may be different. Sometimes the price of an induction heating furnace is very different, and the price is different.
⑵ If the model of the induction furnace is different, the price is different. There are many models and styles of steel bar electric induction furnaces. Different models of steel bar heating furnaces have different prices.
⑶ Different brands of steel bar medium frequency induction heating furnaces have different prices. Not only in the electric induction furnace industry, but the product brand is also different, the price is different. In any industry, such as cosmetics, mobile phones, computers, and so on, the price of the brand directly affects the price of the product. The same is true for steel bar induction furnaces. The price difference between a big brand and a small brand is very big. However, it is still recommended to buy equipment of powerful brands with a guarantee in terms of quality and after-sales.
⑷ If the electric induction furnace manufacturing process is different, the price is different. At present, there are many manufacturers of steel bar induction heating furnaces in the market. Different induction heating furnace equipment manufacturers have different technical strengths, different production processes, different production costs, and different steel bar heating furnaces. Welding, machining, assembling, and painting of steel bar electric induction furnace are needed. The price of each process is different due to different technology and method.
⑸ The material and configuration of medium frequency induction furnaces are different, and the price is different. The cost of material is an important reason that affects the price of steel bar electric induction furnace. In addition, the configuration of the steel bar induction heating furnace is the same. If a set of steel bar heating furnaces is equipped with many advanced configurations and plays a greater role in the machine, the price will be much higher.
To sum up, the medium frequency induction heating furnace is an electric induction furnace that uses the principle of electromagnetic induction to heat metal, which is widely used in high-temperature heating and low-temperature heating, forging industry, casting industry, and metal quenching and tempering heating in high-temperature heating, and steel pipe anti-corrosion spraying preheating in low-temperature heating. The medium frequency induction heating furnace has become indispensable heating equipment.
If you are interested in the electric induction furnace, please mail at marketing2@hanrm.com for your solution.
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