Cisdi Research and Development Co., Ltd.

Cisdi Engineering Co., Ltd

Zhiwei Han

Qiang Liu

Xiaohua Peng

Yiwen Kong

Xinjun He

Jiang Chen

Bitao Deng

A process for thin strip production integrates continuous casting and rolling, with steps including continuous casting, rough rolling, induction heating, finish rolling, laminar cooling, high-speed shearing, and coiling. A key feature is the in-line heating between casting and rough rolling, where wide surfaces, narrow surfaces, and corners of the casting blank are heated simultaneously. This process improves rough rolling efficiency, enhances uniformity and thickness stability of thin strips, reduces out-of-tolerance rates, and minimizes rolling-induced cracks.

Thin strip production process employing continuous casting and rolling

The present invention provides a heat transfer-based width adjustment method for a continuous casting mold. A boundary condition of a horizontal acceleration velocity &#x3b1; used in heat transfer-based width adjustment of a continuous casting mold is set to a minimum value subject to constraints of a maximum air gap and shell strength. The present invention can constrain a maximum air gap between a copper plate of a narrow mold wall and a casting billet in a heat transfer-based width adjustment process for a continuous casting mold, thereby ensuring sufficient contact between the copper plate of the narrow mold wall and the casting billet, so as to prevent cracks and other defects of the casting billet due to excessive thermal resistance of the air gap, insufficient corner cooling of the casting billet, delayed solidification and concentrated thermal deformation stress. Moreover, a strain of the shell is controlled to be less than a critical strain, thereby preventing collapse of the casting billet, and preventing the casting billet from being scrapped as a result of an uneven narrow wall. Furthermore, since parameter settings of a width adjustment model dynamically change with a casting speed change, width adjustment can be performed within a full casting speed range without having to increase or decrease the casting speed.

Heat transfer-based width adjustment method for continuous casting mold

Growing community of inventors

Chongqing, China

Zhiwei Han