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Detailed introduction to complete smelting

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Detailed introduction to complete smelting
Latest company news about Detailed introduction to complete smelting

The smelting furnace adopts an intermediate frequency power supply of 200~2500Hz for induction heating, and the power range is 20~2500KW. According to its characteristics, it can also be called an intermediate frequency electric furnace. It is mainly used for smelting and heating precious metals such as gold, platinum, silver, copper, iron, stainless steel, aluminum alloy, aluminum and other metals. It is an ideal equipment for university laboratories, research institutes, jewelry processing, and precision casting processing. The power supply adopts IGBT imported power devices, which is more integrated and miniaturized, and the effective output power reaches more than 90%, which saves electricity and energy, and saves 60% of energy compared with traditional thyristor intermediate frequency.

 

The complete set of smelting furnace electric furnace equipment includes intermediate frequency power supply cabinet, compensation capacitor, furnace body (two), water-cooled cable, and reducer. The furnace body is composed of four parts: the furnace shell, induction coil, furnace lining, and tilting furnace reduction box. The furnace shell is made of non-magnetic materials. The induction coil is a spiral cylinder made of a rectangular hollow tube. Cooling water is passed through the tube during smelting. The copper bar from the coil is connected with the water-cooled cable. The furnace lining is close to the induction coil, which is compacted and sintered by quartz sand. The tilting of the furnace body is directly rotated by the tilting furnace reduction box. The furnace tilting gearbox is a two-stage turbine variable speed, which has good self-locking performance and stable and reliable rotation. When an emergency power failure occurs, the furnace will be turned down to avoid danger. The control of the tilting gearbox motors of the two furnace bodies can be selected through the furnace selection switch. The switch box with four-core rubber wire enables the operator to stand in a suitable position to control the tilting and resetting of the furnace body. At present, the above-mentioned mechanism is not used in general melting furnaces of more than 3 tons. The tilting furnace is mainly based on hydraulic cylinders. There are several uniformly distributed arc-shaped yokes outside the induction copper ring to prevent magnetic leakage. With this method, the furnace shell does not need to be made of non-magnetic materials, and the outside of the furnace shell does not get hot. The tilting process using hydraulic tilting device is gentle and safe.

 

The smelting furnace uses an intermediate frequency power supply to establish an intermediate frequency magnetic field, which induces eddy currents and heat generation in the ferromagnetic material, so as to achieve the purpose of heating the material. The medium frequency electric furnace uses a 200-2500Hz medium frequency power supply for induction heating, smelting and heat preservation. The smelting furnace is mainly used for smelting carbon steel, alloy steel, special steel, and can also be used for smelting and heating of non-ferrous metals such as copper, aluminum, lead, and zinc. Small size, light weight, high efficiency, low power consumption, fast melting and heating, easy control of furnace temperature, and high production efficiency.

 

Features of melting furnace:

1. The electric furnace is small in size, light in weight, high in efficiency, and low in power consumption; the temperature around the furnace is low, there is less smoke and dust, and the working environment is good;

2. The operation process is simple, the smelting operation is reliable; it is convenient to change the variety.

3. The heating temperature is uniform, the burning loss is small, and the metal composition is uniform;

4. The casting quality is good, the melting temperature is fast, the furnace temperature is easy to control, and the production efficiency is high;

5. According to its characteristics in industry, it can be called industrial furnace, electric furnace, high-frequency electric furnace, small electric furnace, and energy-saving furnace.

6. The furnace body can be dumped electrically, easy to come out, especially suitable for casting.

 

cooling system:
The cooling system of the smelting furnace mainly cools the power supply and the furnace body. The power supply part includes each power supply device in the power supply cabinet and a power electric heating capacitor group. The power supply part is composed of precision electrical components, and the cooling pipe is relatively thin. In order to prevent the pipe from fouling and blocking the pipe, demineralized water or pure water is generally used.

Electric furnace and power supply adopt independent cooling devices. The intermediate frequency power supply adopts a totally enclosed cooling device, and the furnace body adopts a totally enclosed cooling device.

The purpose of the smelting furnace using two independent sets of cooling devices is to avoid mutual influence. Because the intermediate frequency power supply requires low-temperature cooling water (pure water), the outlet water temperature must be controlled within 55°C, but the cooling water temperature of the induction coil of the electric furnace can be slightly higher, which can increase the thermal efficiency of the electric furnace and reduce the volume of the cooling device. , Thereby reducing the cost.

Pub Time : 2021-10-13 11:21:10 >> News list
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