The equipment circuit adopts an advanced high-speed railway rectification system, ensuring stable operation.
Controlled intelligently by PLC, it has a high degree of automation and a stable and reliable production rhythm.
During the smelting process, according to process requirements, the voltage level can be adjusted arbitrarily when the current is constant, or the current can be adjusted freely when the voltage is constant. The power factor is always maintained above 0.95.
In smelting, the electrode polarity can be switched arbitrarily, greatly shortening the smelting time.
The direction of direct current remains unchanged, and so does the magnetic field direction. The solution circulates in one direction under the push of the magnetic field, forming an electromagnetic stirring phenomenon, making the solution temperature uniform and resulting in high product quality and high yield.
II. Problem Solving The double-electrode DC furnace has no bottom anode effect, completely solving the problem that the single-electrode DC furnace is prone to burning out the furnace bottom.
III. Energy Saving Advantages Compared with AC furnaces, electrode consumption is reduced by 30%. Because AC furnaces have the skin effect, the current only passes through the electrode surface, causing surface heating and serious electrode consumption. However, DC furnaces have no skin effect. It saves 10% to 15% energy compared with AC furnaces. In AC furnace circuits, there are alternating magnetic fields and eddy current phenomena, resulting in a large amount of heat generation in the circuit and waste of electric energy. While in DC furnace circuits, there is only a magnetic field and no eddy current.
IV. Stable and Reliable
The arc light is stable. The angle between the arc light and the electrode of AC furnaces is 45 degrees, which is easy to burn the furnace wall. Moreover, the AC voltage crosses zero 100 times per second, and there are 100 arc ignition and extinction phenomena, making the arc light unstable. While in DC furnaces, the angle between the arc light and the electrode is 30 degrees, which is not easy to burn the furnace wall. The furnace lining has a longer service life. There is no zero-crossing phenomenon and no arc ignition and extinction phenomenon.
The noise is 15 – 20 decibels lower than that of AC furnaces.
AC furnaces have a large reactive power. The natural power factor is only about 0.8. Even with a reactive power compensation device, it is only about 0.9. While DC furnaces do not need a reactive power compensation device, and the natural power factor is as high as 0.95 to 0.98.
There is no flicker in DC voltage and no stimulating harmonic interference, and the conductor generates less heat. While in AC furnaces, the intense lightning phenomenon generates a large amount of harmonic pollution, and the conductor generates a large amount of heat.
V. Our Purpose With the purpose of stable, safe equipment and energy saving and consumption reduction, we aim to maximize customer benefits.
