Patent ID: 11866829
Assignee: JOHN COCKERILL S.A.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 10:
11. A method for controlling the thickness of the coating layer deposited on the running strip in the industrial hot-dip installation, using the gas wiping device of claim 1, the method comprising:
blowing a first pressurized non-oxidizing gas jet through the main nozzle unit on the running strip plated with the molten metal coming out of a hot-dip pot; and
blowing a second pressurized non-oxidizing gas jet through the secondary nozzle unit on the running strip plated with the molten metal coming out of a hot-dip pot, an impingement spot of the second gas jet being located close to or downstream from an impingement spot of the first gas jet with respect to a running direction of the running strip,
wherein a gas flow rate coming out of the secondary nozzle unit is controlled and is less than 40 percent of a gas flow rate coming out of the main nozzle unit.