FACILITY FOR HIGH VACUUM DEGASSING OF STEEL

Includes:
• Stream degassing during pouring;
• Ladle degassing;
• Double-degassing.

Implementation:
• Novokramatorsky Mashinostroitelny Zavod;
• Moldavian Metallurgical plant.

Advantages:
• Generates and sustains operating depression/vacuum 0.5 mm of mercury (0.67 mbar);
• Minimizes gas content and content of nonmetallic inclusions;
• Reduces nitrogen content in finished rolled products on 30% and hydrogen content - by a factor of four;
• Allows making of steel which meets the highest requirements;
• Pay-back period is 2 years.

Partners:
• M/s "EKVAKS" (Russia).

Steel degassing facility provides:
• Steel homogenization in the ladle;
• Exact obtaining of required chemical composition before pouring;
• Reduction of sulfur content in steel < 50 ppm;
• Receiving of steel with carbon content < 0,003%;
• Reduction of nonmetallic inclusions content in steel < 0,002%;
• Reduction of nitrogen content in steel < 40 ppm;
• Reduction of hydrogen content in steel 1,5 ppm;
• Oxygen content in steel < 30 ppm.

REFERECE-LIST

Ladle - type vacuum degassing unit