SIDE SPRAY METHOD FOR COOLING AFTER ROLLING OF HOT-ROLLED STRIP STEEL

Title:

SIDE SPRAY METHOD FOR COOLING AFTER ROLLING OF HOT-ROLLED STRIP STEEL

Document Type and Number:

WIPO Patent Application WO/2019/184831

Kind Code:

A1

Abstract:

A side spray method for the cooling after rolling of hot-rolled strip steel, comprising the following steps: a) side spray devices (30, 30', 30") are provided behind each of cooling after rolling sections (20, 20', 20''), the side spray devices being staggered along both sides of an output roller passage (10), each side spray device comprising at least two spray members, each spray member comprising spray tubes (2, 2', 2") and nozzles on the tubes, the spray tubes being vertically parallel to each other along the forwarding direction of strip steel, the ranges of coverage of adjacent nozzles being partially overlapped, and the total range of water spray coverage of the nozzles covering the width of the entire output roller passage; side spray water collecting devices (40, 40', 40") are provided on the other side of the output roller passage corresponding to the side spray devices such that side-sprayed water falls into the collecting devices; b) the control mode of the side spray devices is starting in pairs, i.e., spray devices on either side of the output roller passage must be started simultaneously. The side spray method can effectively purge the residual water on the surface of strip steel having different width specifications, improves the cooling uniformity, and reduces splashes as far as possible to avoid adverse effects on the environment and electrical equipment.

Inventors:

WU JIANFENG (CN)
WANG XIAOBO (CN)
HU ZHAOHUI (CN)
ZHANG YONG (CN)
LIU WENDONG (CN)
ZHANG QINGFENG (CN)
LIU YE (CN)
XU GUOHUA (CN)

Application Number:

PCT/CN2019/079325

Publication Date:

October 03, 2019

Filing Date:

March 22, 2019

Export Citation:

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Assignee:

BAOSHAN IRON & STEEL (CN)

International Classes:

B21B45/02

Foreign References:

CN203108954U	2013-08-07
CN203955734U	2014-11-26
CN104525589A	2015-04-22
CN104841702A	2015-08-19
JP2016193446A	2016-11-17
KR101632883B1	2016-06-24
JPH079023A	1995-01-13
CN103611739A	2014-03-05
CN203108954U	2013-08-07
CN202591256U	2012-12-12
CN104525589A	2015-04-22
CN205253744U	2016-05-25

Other References: