Title:
TOP HAT STEEL ROLLING METHOD AND TOP HAT STEEL
Document Type and Number:
WIPO Patent Application WO/2022/111191
Kind Code:
A1
Abstract:
Disclosed are a top hat steel rolling method and a top hat steel. The process flow of the present rolling comprises: heating → high-pressure water descaling → cogging and blank rolling → reciprocating continuous rolling → cooling → straightening. Rolling hole shapes comprise a wavy flat arc-shaped pre-cut split hole, an M-shaped top hat-typed split hole, a top hat-typed finish rolling hole, and a hot-rolled finished hole. The middle portion of the top hat-typed finish rolling hole and the hot-rolled finished hole has an arc-shaped section. An upper leg portion and a lower leg portion are symmetrically provided at two ends of the arc-shaped section. An included angle is formed between the upper end of the upper leg portion and one end of the arc-shaped section. The lower leg portion is arranged at a lower end of the side of the upper leg portion away from the arc-shaped section, and the lower leg portion intersects with the upper leg portion to form an included angle. The top hat steel comprises a horizontal waist portion, two ends of which are respectively symmetrically provided with vertically placed vertical legs and horizontally placed horizontal legs, and the horizontal legs are positioned on the side of the vertical legs away from the waist portion. The present invention may effectively improve the production efficiency of top hat steel, improve rolling stability, reduce process design difficulty, and reduce roller equipment loss.
Inventors:
DING ZHAOHUI (CN)
WU BAOQIAO (CN)
WU MEIZHUANG (CN)
ZHANG JIAN (CN)
ZHANG WEIBIN (CN)
PENG LIN (CN)
HUANG QI (CN)
YAN JINGCHENG (CN)
XIA MENG (CN)
XING JUN (CN)
HE JUNWEI (CN)
SHEN QIANCHENG (CN)
WANG JIE (CN)
CHEN HUI (CN)
WU BAOQIAO (CN)
WU MEIZHUANG (CN)
ZHANG JIAN (CN)
ZHANG WEIBIN (CN)
PENG LIN (CN)
HUANG QI (CN)
YAN JINGCHENG (CN)
XIA MENG (CN)
XING JUN (CN)
HE JUNWEI (CN)
SHEN QIANCHENG (CN)
WANG JIE (CN)
CHEN HUI (CN)
Application Number:
PCT/CN2021/126547
Publication Date:
June 02, 2022
Filing Date:
October 27, 2021
Export Citation:
Assignee:
MAANSHAN IRON&STEEL CO LTD (CN)
International Classes:
B21B37/16; B21B1/08; B21B37/46
Domestic Patent References:
| WO2021180387A1 | 2021-09-16 |
Foreign References:
| CN112474794A | 2021-03-12 | |||
| CN103883867A | 2014-06-25 | |||
| CN110191768A | 2019-08-30 | |||
| CN111565860A | 2020-08-21 | |||
| CN102431568A | 2012-05-02 | |||
| JP2020163417A | 2020-10-08 | |||
| CN1608759A | 2005-04-27 |
Attorney, Agent or Firm:
WEN PARTNERS, P.C. (CN)
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