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Introduction to the characteristics and safety regulations of the intermediate frequency heating furnace

Introduction to the characteristics and safety regulations of the intermediate frequency heating furnace


The furnace is now widely used in the metallurgical industry, and there are many types of furnaces. The medium frequency furnace is one of them. Let's take a look at the introduction of the medium frequency furnace.
 

First, the intermediate frequency heating furnace


In the metallurgical industry, a furnace is a device (industrial furnace) that heats a material or workpiece (typically a metal) to a forging temperature.

Heating furnaces are used in many industries such as petroleum, chemical, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemical, pharmaceutical and so on.
 

Second, the characteristics of the medium frequency heating furnace equipment


1, using German Siemens IGBT power tube and unique inverter technology

2. The power time of the heating and holding process can be adjusted to improve the quality of heating and the repeatability of heating, and simplify the operation technology of workers.

3, the installation is simple, connect the single-phase 220V power supply into the water to complete.

4, the land occupation is very small, the operation is simple, can learn to be particularly safe in a few minutes, the output voltage is lower than 36V, eliminating the danger of high voltage electric shock.

5, no open fire, more secure. Use overcurrent to generate electromagnetic induction, heating only any metal.

6, the heating efficiency of more than 90%, than the high-frequency intermediate frequency power saving 30-40%, almost no electricity in the shutdown state. And can be used continuously for 24 hours

7, 满负荷 load continuation rate, can be carried out under the heating condition of 24 hours maximum power.

8, the induction ring can be freely disassembled, easy to replace. The ultra-fast heating speed greatly reduces the oxidative deformation of the workpiece.

9, with constant power and constant current control function, the maximum efficient and rapid heating, optimize the heating process of metal workpieces.

10, the installation is simple, connected to the three-phase 380V power supply, water, water, can be completed in a few minutes.



Third, medium frequency heating furnace safety regulations


(1) The medium frequency induction furnace should use a dedicated rectifier transformer to increase the supply voltage and limit the no-load operation of the transformer.
(2) Standard installation, shortening the connection between high voltage, transformer, intermediate frequency power supply and electric furnace, using T2 copper or oxygen-free copper with high purity, especially induction coil and water-cooled cable, increasing the cross-sectional area can effectively reduce the current Heat loss.
(3) Select an appropriate capacity and frequency intermediate frequency electric furnace according to the casting process, increase the power density to improve the melting efficiency and reduce the additional loss.
(4) The steel shell furnace with the furnace cover is preferentially selected to reduce the heat loss and electromagnetic loss of the furnace wall and the furnace mouth. The furnace body joints prevent short-circuiting of metal contacts during operation.
(5) Formulate a reasonable casting process, from the modeling, material selection, melting, pouring, heat treatment, cleaning and other standard process operations, scientific management to reduce energy consumption.
(6) Strengthen equipment management and maintenance, reduce the failure rate, and ensure smooth production.
(7) Always check whether the contact parts of the conductive systems are in good contact, especially if the screws at the connection between the water-cooled cable and the induction coil are tight. The insulation table and the insulated boots must be inspected once a year.
(8) During the smelting process, it is strictly forbidden to stop power and stop water. During the smelting process, the water temperature and water pressure should be paid attention to at any time, so that the water pressure is maintained at 0.1-0.3 MPa and the effluent temperature is kept below 55 °.
(9) When feeding, the cold and wet charge should be dried first, and can not be directly added into the melt. It is best to avoid metal cutting in the first furnace, because the metal cutting can penetrate into the lining gap; the furnace must be heated to 1000. When the temperature is around °C, the molten iron can be poured, and the heating of the furnace can be added to the iron block for induction heating.
(10) The freezing and sealing time of the furnace material should not be too long, so as not to cause the furnace explosion accident; after sintering the furnace lining, it is recommended to use 30~50% of the rated power and continuously work more than 5 furnaces.


The above is the introduction of the intermediate frequency heating furnace and safety regulations introduced by Xiaobian. Although the heating furnace is very convenient to use, it is still necessary to pay attention to safety according to the procedure.
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