METHOD FOR REDUCING ROLLING FORCE OF TWIN ROLL CASTING PRODUCTION LINE ROLLING MILL

WIPO Patent Application WO/2020/169076

A1

A method for reducing the rolling force of a twin roll casting production line rolling mill. The method comprises: qualified molten steel is smelted by a converter or an electric furnace and passed through a tundish, a transitional container, and counter-rotating copper casting rollers to form casted strands of a certain thickness, a certain volume of air and a certain volume of nitrogen are introduced into hot vessel #3 of a twin roll casting production line, the content of air can be controlled independently on the upper and lower surfaces so that an extremely thin oxidized layer is provided on the surfaces of the casted strands; which are hot-rolled, then cooled, and rolled into rolls. By means of the method, the oxide layer provided on the surfaces of the casted strands increases lubrication on the surfaces of the casted strands, thus reducing rolling force and extending the service life of the rollers.

LIU XINYUAN (CN)
LI HUALONG (CN)
ZHOU DONGSHENG (CN)
SHI YIXIN (CN)
LIU JIAN (CN)
MA YI (CN)
WU RONGZHOU (CN)
LI TINGTING (CN)
LI XIA (CN)
CHEN AIHUA (CN)

PCT/CN2020/076117

August 27, 2020

February 21, 2020

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JIANGSU SHAGANG GROUP CO LTD (CN)
INSTITUTE OF RES OF IRON & STEEL JIANGSU PROVINCE/SHA-STEEL CO LTD (CN)
ZHANGJIAGANG ZHONGMEI UCS TECH CO LTD (CN)

B21B1/46; B22D11/06

CN109731913A	2019-05-10
CN108611565A	2018-10-02
CN103966527A	2014-08-06
CN107142364A	2017-09-08
CN105014021A	2015-11-04
CN108796190A	2018-11-13
US9999918B2	2018-06-19
US6588494B1	2003-07-08

LIU, SHEN & ASSOCIATES (CN)

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