Vacuum degassing furnace---the common problems

The vacuum degassing furnace first inhales the molten steel into the vacuum chamber and then blows argon gas into the molten steel on the side walls of the two risers.  The argon gas expands rapidly under the action of low temperature and high pressure in the upper part of the vacuum chamber, making the concentration of molten steel and gas decrease continuously along the height of the immersed tube.  Under the pressure difference caused by density difference, molten steel enters vacuum degassing furnace in vacuum chamber.  The molten steel and gas are mixed into the vacuum chamber, and the gas is released under the action of high vacuum, and the molten steel is released into the molten steel. In the process of removing the molten steel, the gas is released into the vacuum, and the steel ball with high vacuum is put into the smaller steel ball, so as to achieve a very good degassing effect.  The gas-releasing molten steel returns to the ladle along the descending pipe.  After several cycles, the gas in molten steel can be reduced to a fairly low level.  

Vacuum degassing furnace  :

Vacuum degassing furnace at the beginning of the cycle treatment, sampling and measuring temperature every 10 minutes;  At the end of the treatment, the sampling temperature is measured every 5 minutes.  According to the results of sampling and analysis, if we need to add alloying materials (including deoxidizer or other additives), we can operate the automatic hopper and the constant feed rate of the vacuum chamber to add alloying materials without destroying the vacuum.  

When we work in the vacuum degassing furnace, there are always some problems from time to time. It may be that we operate improperly when using or installing the vacuum degassing furnace, so the vacuum degassing furnace fails at work and affects the work efficiency.  Suzhou Zhenwu Electric Furnace has summarized several problems that often occur in vacuum degassing furnace. Here is to tell you about them. The specific content is as follows:  

1. If there is gas in the heating and refrigeration system of vacuum degassing furnace, the vacuum degassing furnace is easy to produce gas resistance, which causes the circulation of the local or the whole system to be blocked, so that the heating system is not hot and the refrigeration system is not cold.  

2. Aerobic corrosion of heating and cooling equipment, pipes and steel radiators, resulting in perforation and leakage due to the presence of oxygen in the water.  The existence of gas in vacuum degassing furnace will cause the corrosion of the pump, which will directly affect the safety of the whole vacuum degassing furnace.  

3. In the heating and cooling water circulation system will inevitably be some air, if not checked, the air will bring effect on water cycle system in the water, because the gas is easy to produce gas resistance, causing resistance unbalanced system, noise, cavitation, etc., and the damage to equipment and piping of the system, thus reducing pump lift and efficiency effectively