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US 12,735,782 B2Granted
Filtration system
AssigneeArcelorMittal
InventorsMaxime Brossard, Paul Durighello, Friederike-Franka Albrecht, Jan-Erik Hilger, Luc Diez
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Abstract
A cooling method of a travelling coated steel strip, exiting a hot-dip coating bath, including the steps of A) sucking a gas into a cooling device, B) filtering the sucked gas by a filtering system capturing at least 50% of the particles having a size of at least 2.5 μm, C) blowing, at a velocity comprised from 1 to 80 m·s−1, the sucked and filtered gas onto the coated steel strip.
Claims8
A cooling method of a travelling coated steel strip, exiting a hot-dip coating bath, the method comprising the steps of:
- A) sucking a gas into a cooling device;
- B) filtering the sucked gas via a filtering system capturing at least 50% of the particles having a size of at least 1.0 μm;
- C) blowing, at a velocity from 1 to 80 m·s−1, the sucked and filtered gas onto the coated steel strip,
- wherein the hot-dip coating bath comprises from 1 to 5 weight percent of magnesium and from 0.8 to 20 weight percent of aluminium, a remainder being made of zinc and inevitable impurities,
- wherein the steps A to C reduce the formation of nucleating Mg2Zn11 during cooling of steel strips coated with magnesium, aluminium and zinc exiting the hot-dip coating bath wherein in step B) the filtering captures particles having a size of 1.0 μm.
2 more elements
Dependencies are inferred from the claim text.