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INNOVATION AND APPLICATION RESEARCHES OF EAF-CSP TECHNOLOGY IN ZHUJIANG STEEL --- MAIN INNOVATION POINTS
Terminal point control, patent No.: 02115094.X.
Low [N] steel metallurgy.
Bottom bubbling with nitrogen.
Higher quantity HBI charging.
Foaming slag with dolomite.
Less slag tapping and deoxidization.
Quick desulphurization and deoxidization.
Wire feeding process.
Ladle management ( free-open percentage
higher than 96%).
Narrow Composition Control (NCC).
Clean steel production.
Deep drawing steel production,
patent No.: 02119771.9.
Preventing breakout technology
(Monthly zero breakout).
SEN local manufactured technology.
Casting powder local manufactured
technology, patent No.: 01129771.9.
High temperature slab production.
Defects free slab production.
Slab temperature control.
Atmosphere control (Oxidation
ratio ¡Ü0.5%).
Thin gauge strip rolling.
Profile control. CSP lubricated
rolling.
High Strength Low Carbon strip
(HSLC) production,patent No.: 02115101.6.
Container strip developing and
production, patent No.: 01114640.0.
Cooling water applied technology
(Circulation ratio ¡Ý99%).
Products quality control.
Laminar cooling water control.
Level 3 computer control on the
whole line.
The best technology and largest
production to produce containerstrip in the world's similar line,
market share is 1/6 in China, or1/8 in the world in 2002.
High strength low carbon strip
with good performances such as strength, plastic, direction different,
welding and forming etc.
The percentage of less than 2mm
HRS is ¡Ý80%, the best in the similar line in the world.
Low carbon steel ( C < 0.07)
production with EAF percentage is more than 95%, the largest in the
similar line in the world.
The fastest to full production
in the world with EAF-CSP.
Creating Zhujiang Steel management
mode, with the highest productivity of 2200t/man.year.
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