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Copper mould is placed in the heart position of continuous casting machine(CCM),its function is to solidify the liquid steel pouring through the Submerged entry nozzle(SEN), guarantees required billet/bloom/slab with enough thick shell to be obtained. Copper mould plays a crucial role in increasing con-casting efficiency as well as improving billet/bloom/slab quality.
Mould material : The tough working condition of copper mould tube requires its material with excellent tensile strength, enough hardness, low elongation & good thermal conductivity. After many years experiment in our Lab & steel mills, now we are manufacturing copper mould tube with widely accepted material as :SF-CU, Cu-Ag0.1P & Cu-Cr-Zr.
Mould plating : The temperature inside the mould is very high, so in order to prevent inside wall from wearing off & eliminating cracks & defects on the billet surface, by introducing western plating technology, ANSSEN has successfully improved the coalescent strength between copper and plating, as a result, life of copper mould has been elongated by 20~30% compared with traditional ways.
Typical coatings are : Cr, Ni, Cr-Ni, Ni-Fe, Ni-Co.
Taper design: Properly taper design will make billet shrinking in a proper curve while passing through, also minimizing the air gap between copper mould & billet Shell.
Along with the development of con-casting technology, ANSSEN has accumulated rich experience in taper designing, our tapers are: Single taper, double taper, triple taper, multiple taper, parabolic taper as well as double parabolic taper & convex.