Steel-strip production apparatus

Patent metadata

Field	Value
Publication number	US-10273557-B2
Application number	US-201515500393-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Aug 11, 2014
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A steel-strip production apparatus adapted to produce a hot-dip-plated steel strip and a cold-rolled steel strip includes a continuous annealing furnace, a snout connected to the continuous annealing furnace, a contact-type seal plate device and a noncontact-type seal roll device, a hot-dip-plating tank that is movable, and a roll configured to turn the path direction of the steel strip after passing through the snout, wherein a hot-dip-plated steel strip production unit configured to produce a hot-dip-plated steel strip by bringing the steel strip continuously annealed in the continuous annealing furnace into the hot-dip-plating tank; and a cold-rolled steel strip production unit configured to produce a cold-rolled steel strip by transferring the steel strip continuously annealed in the continuous annealing furnace without causing the steel strip to pass through the hot-dip-plating tank, are configured to be switchable with one another.

First claim

The invention claimed is:

1. A steel-strip production apparatus adapted to produce a hot-dip-plated steel strip and a cold-rolled steel strip, the steel-strip production apparatus comprising:
a continuous annealing furnace;
a snout connected to the continuous annealing furnace;
a contact seal plate device and a noncontact seal roll device that are arranged on the entry side of the snout along a transfer direction of the steel strip in this order, the contact seal plate device being configured to contact the steel strip during use of the steel-strip production apparatus;
a hot-dip-plating tank that is movable;
bath equipment including a sink roll, the sink roll being configured to turn the path direction of the steel strip after the steel strip passes through the snout; and
a deflector roll configured to turn the path direction of the steel strip after the steel strip passes through the snout,
wherein:
when the steel-strip production apparatus is configured to function as a hot-dip-plated steel strip production unit that produces the hot-dip-plated steel strip by bringing the steel strip continuously annealed in the continuous annealing furnace into the hot-dip-plating tank, the bath equipment including the sink roll is installed such that the sink roll is installed at a predetermined position, and
when the steel-strip production apparatus is configured to function as a cold-rolled steel strip production unit that produces the cold-rolled steel strip by transferring the steel strip continuously annealed in the continuous annealing furnace without causing the steel strip to pass through the hot-dip-plating tank, the bath equipment including the sink roll is removed and the deflector roll is installed at the predetermined position.

2. The steel-strip production apparatus according to claim 1 , further comprising an additional seal roll device, wherein the seal roll device and the additional seal roll device are arranged in series along the transfer direction of the steel strip.

3. The steel-strip production apparatus according to claim 2 , further comprising: a working space in at least one of a space between the seal plate device and the seal roll device, or a space between the seal roll device and the snout.

Assignees

• Jfe Steel Corp
• Primetals Tech Japan Ltd

Inventors

• Iida Sachihiro
• Kajitani Hiroshi

Classifications

• C21D9/562 Primary

  Details · CPC title

• C21D9/563

  Rolls; Drums; Roll arrangements · CPC title

• C23C2/40

  Plates; Strips · CPC title

• C21D9/565 Primary

  Sealing arrangements · CPC title

• C21D8/0236

  Cold rolling · CPC title