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公开(公告)号：US11141782B2
公开(公告)日：2021-10-12
申请号：US16602300
申请日：2017-09-21
Applicant: CISDI RESEARCH AND DEVELOPMENT CO., LTD.
Inventor： Xinjun He , Zhiwei Han , Xiaohua Peng , Jiang Chen
IPC: B22D11/16
Abstract: The present invention provides a heat transfer-based width adjustment method for a continuous casting mold. A boundary condition of a horizontal acceleration velocity α 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.
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公开(公告)号：US20200290115A1
公开(公告)日：2020-09-17
申请号：US16602300
申请日：2017-09-21
Inventor： Xinjun He , Zhiwei Han , Xiaohua Peng , Jiang Chen
IPC: B22D11/16
Abstract: The present invention provides a heat transfer-based width adjustment method for a continuous casting mold. A boundary condition of a horizontal acceleration velocity α 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.
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3.发明申请公开(公告)号：US20200224972A1
公开(公告)日：2020-07-16
申请号：US16649966
申请日：2018-08-28
Inventor： Qiming Huang , Cunzhen Tan , Weizhi Shi , Yuchuan Zhang , Zhan Gao , Lei AL , Chunting Liu , Wei Lin , Chao Liu
Abstract: The present invention belongs to the technical field of metallurgy, and discloses a horizontal continuous feeding preheating device and an enhanced preheating method therefor. The scheme comprises that two dust removal ports are arranged at the front and rear parts of a horizontal continuous feeding preheating duct, and the horizontal continuous feeding preheating duct is divided into an enhanced preheating area and a flue gas preheating area by the two dust removal ports arranged at the front and rear parts of the horizontal continuous feeding preheating duct; burners are installed in the enhanced preheating area, and the two dust removal ports are connected with a flue gas adjusting distributor respectively by a flue gas pipeline; the negative pressure of a second dust removal port is balanced by the efflux fluid dynamic pressure of a plurality rows of burners in the enhanced preheating area; the micro-negative pressure requirement of a first dust removal port is controlled by a pressure sensor, so as to reduce the amount of cold air mixed into the first dust removal port, the steel scrap preheating efficiency of the burners and electric arc furnace flue gas is increased by controlling the flow rate and temperature of mixed flue gas, and the production is made more environment-friendly.
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4.发明授权公开(公告)号：US11668526B2
公开(公告)日：2023-06-06
申请号：US16649966
申请日：2018-08-28
Inventor： Qiming Huang , Cunzhen Tan , Weizhi Shi , Yuchuan Zhang , Zhan Gao , Lei Al , Chunting Liu , Wei Lin , Chao Liu
CPC classification number: F27B3/085 , F27D13/002 , F27B3/205 , F27B3/28 , F27D17/003 , F27D99/0033
Abstract: The present invention belongs to the technical field of metallurgy, and discloses a horizontal continuous feeding preheating device and an enhanced preheating method therefor. The scheme comprises that two dust removal ports are arranged at the front and rear parts of a horizontal continuous feeding preheating duct, and the horizontal continuous feeding preheating duct is divided into an enhanced preheating area and a flue gas preheating area by the two dust removal ports arranged at the front and rear parts of the horizontal continuous feeding preheating duct; burners are installed in the enhanced preheating area, and the two dust removal ports are connected with a flue gas adjusting distributor respectively by a flue gas pipeline the steel scrap preheating efficiency of the burners and electric arc furnace flue gas is increased by controlling the flow rate and temperature of mixed flue gas.
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