Vacuum pump system
Vacuum pump is the key equipment of vacuum refining device
l In 1962, China's first steam jet vacuum pump laboratory was built up in our institute, based on a large number of experimental research, the technology level has reached the international advanced level. The unit steam consumption is less than 31kg/kg, the unit water consumption is less than 50m3/t. The unique computational model and design method have been developed in our institute. What’s more, the pumping capacity of the vacuum pump has exceeded 1500kg/h (at 67Pa) at present.
l In 2012, the unique mechanical vacuum pump laboratory in China was established in our institute, after repeated experiment with a large amount of data analysis, the unique control technology and system design methods have been developed in our institute, which have been applied to practical engineering successfully.
l Natural decarbonization and forced decarbonization
l Precise adjustment of composition and temperature
l Improve cleanliness of liquid steel
Founctions and applications:
l VD：Vacuum degassing, argon stirring, alloy trimming, composition and temperature uniformity, inclusion removal; applicable for the production of bearing steel, alloy steel, high - quality carbon steel
l VOD：Blowing oxygen decarburization, argon stirring, chemical heating, vacuum degassing, slag alloying; applicable for the production of stainless steel, pure iron, precision alloy, high temperature alloy steel and alloy structural steel.
l EAF is one of the important methods by electric arc heating
Temperature controlled, stage smelting, furnace atmosphere control, composition adjustment, producing high-quality steel with LF and VD
l LF can be a buffer between the beginning furnace and the continuous casting machine
Heating up temperature, composition adjustment, desulfurization, inclusion removal, meet multiple furnace continuous casting process
l Vacuum degassing, inclusion remove, composition and temperature uniformity, vacuum casting molding
l Blowing argon whole process, liquid steel composition and temperature uniformity, strengthening degassing
l Suitable for steel which sensitive to hydrogen, oxygen and other gases, conduct protect casting, to avoid secondary oxidation
l Reduce non-metallic inclusions and crystallization segregation