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Processing line for continuous processing of metal strips, having dual purpose of producing strips that are annealed and dip-coated or not coated, and corresponding cooling tower and method for switching from one configuration to the other

A technology for metal strips and cooling towers, applied in metal material coating processes, heat treatment furnaces, heat treatment equipment, etc., can solve problems that cannot, are not completely satisfactory, and cannot fully satisfy steel manufacturers

Pending Publication Date: 2021-12-17
FIVES STEIN SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is not entirely satisfactory, especially since it complicates the layout of the line and it makes it impossible to benefit from the air cooling of the cooling tower in the annealing mode
[0015] Furthermore, these solutions do not adequately meet the needs of steelmakers, as for the target steel quality it may be difficult to achieve all desired thermal cycles in CAL and CGL modes due to the successive sections in which the strip is available and the caused by path restrictions in the cooling unit

Method used

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  • Processing line for continuous processing of metal strips, having dual purpose of producing strips that are annealed and dip-coated or not coated, and corresponding cooling tower and method for switching from one configuration to the other
  • Processing line for continuous processing of metal strips, having dual purpose of producing strips that are annealed and dip-coated or not coated, and corresponding cooling tower and method for switching from one configuration to the other
  • Processing line for continuous processing of metal strips, having dual purpose of producing strips that are annealed and dip-coated or not coated, and corresponding cooling tower and method for switching from one configuration to the other

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Embodiment Construction

[0046] Since the embodiments described below are not restrictive in nature, in particular variants of the invention comprising only a selection of the described features can be considered, as long as this selection is sufficient to confer technical advantages or to distinguish the invention from the prior art open. This option includes at least one preferred functional feature without structural details, or only with partial structural details if this is sufficient to confer a technical advantage or to distinguish the invention from the prior art.

[0047] In the rest of the specification, elements having the same structure or similar functions will be denoted by the same reference numerals.

[0048] figure 1 A part of an annealing and galvanizing line according to the prior art is shown schematically. It is shown in CGL mode, the device that allows switching to CAL mode is not shown. Also, for the sake of simplicity, mechanical equipment (such as uncoilers, welding machine...

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Abstract

Disclosed is a processing line for the continuous processing of metal strips having a dual purpose, i.e. for producing strips that are annealed and dip-coated with a metal alloy and for producing strips that are annealed and not coated, comprising a dual-purpose cooling tower (14), i.e. for cooling strips that are annealed and not coated in a non-oxidising atmosphere and for air-cooling strips that are annealed and coated.

Description

technical field [0001] The invention relates to the field of production lines for metal strip coils, with the dual purpose of producing strips that are annealed and dipped or only annealed, that is to say uncoated. The coating can be of any type based on zinc, aluminium, a mixture of zinc and aluminium, or any other component. More specifically, the present invention relates to equipment and methods that enable dual purpose production lines with operation in an anneal-only mode or an anneal-then-coat mode with easy switching from one mode of operation to the other operating mode. [0002] Technical problem solved by the present invention [0003] The market demand for high-strength coils has steelmakers looking for flexible production methods that allow the production of only annealed steel as well as steel that is both annealed and coated. Furthermore, new steels do not require the same thermal cycles when they are only annealed as well as when they are annealed and coated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/573C21D1/26C21D1/68
CPCC21D9/5735C21D1/26C21D1/68C23C2/28C23C2/0035C23C2/00344C23C2/29C23C2/004C23C2/0038C21D9/561C21D9/573C23C2/06C23C2/40C21D9/46C21D9/0062C21D8/0273C23C2/261C21D1/63
Inventor M·克林
Owner FIVES STEIN SA