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1. 发明专利

LU102791B1 High-quality Spring Steel and Refining Method Thereof 未知
公开(公告)号：LU102791B1
公开(公告)日：2021-10-26
申请号：LU102791
申请日：2021-04-26
申请人： XIANGTAN IRON & STEEL CO LTD OF HUNAN VALIN , UNIV BEIJING SCIENCE & TECHNOLOGY
发明人： ZHOU WENHAO , XIAO DONG , CHI YUNGUANG , CHEN JUN , WANG CHEN , LIU QING
IPC分类号： C21C7/064 , C21C7/06 , C21C7/10
摘要： The present invention provides high-quality spring steel and a refining method thereof, relating to the technical field of ferrous metallurgy. In the method of the present invention, high-purity silicon and metal manganese are used for deoxidization, refining slag with a basicity of 1.5-2.5 is used for desulfurization in a LF refining process, and refining slag with a basicity of 0.8-1.0 and an Al2O3 content of less than 6% is used for liquid steel refining in a VD refining process, so that the S content in liquid steel can be well reduced and the Als content in the steel is controlled to be less than 0.0020%, thereby improving the inclusions in the spring steel and further improving the fatigue resistance.

2. 发明专利

LU102759B1 METHOD FOR IMPROVING CENTER SEGREGATION AND SURFACE CRACK OF CONTINUOUS CASTING MEDIUM-THICK SLAB OF PERITECTIC STEEL 未知
公开(公告)号：LU102759B1
公开(公告)日：2021-10-07
申请号：LU102759
申请日：2021-04-07
申请人： UNIV BEIJING SCIENCE & TECHNOLOGY
发明人： LIU QING , HAN YANSHEN , ZHANG JIANGSHAN
IPC分类号： B22D11/22
摘要： The present invention provides a method for improving center segregation and surface crack of continuous casting medium-thick slab of peritectic steel, and relates to the technical field of quality control of continuous casting slab. By reducing the cooling intensity at the earlier stage of solidification and enhancing the cooling intensity at the final stage of solidification, the center segregation and the surface crack of the continuous casting medium-thick slab of peritectic steel are improved. The method comprises the following contents: the cooling water amount of the wide face of the mould is 3400-3600 L/min, and the cooling water amount of the narrow face of the mould is 480-530 L/min; the cooling water amount of the wide face of the foot roller section is 239-298 L/min, and the cooling water amount of the narrow face of the foot roller section is 61-65 L/min; and the total cooling water amount of the sector segment is 1517-2166 L/min, wherein the total cooling water amount of the first section to the fourth section is 840-1101 L/min, and the total cooling water amount of the fifth section to the eighth section is 633-1001 L/min. The technical solution provided by the present invention is suitable for the casting process of the continuous casting medium-thick slab.

3. 发明专利

LU501677B1 CONTINUOUS CASTING COOLING METHOD FOR CONTROLLING CORNER CRACKS OF PERITECTIC STEEL SLAB 未知
公开(公告)号：LU501677B1
公开(公告)日：2022-09-19
申请号：LU501677
申请日：2022-03-17
申请人： BAOSTEEL GROUP XINJIANG BAYI IRON AND STEEL CO LTD , UNIV BEIJING SCIENCE & TECHNOLOGY
发明人： ZHANG CHUNHUI , LIU QING , WU JUN , WANG HUISHENG
IPC分类号： B22D11/12 , B21B45/02 , B22D11/22
摘要： The invention provides a continuous casting cooling method for controlling corner cracks of a peritectic steel slab, and relates to the technical field of steel continuous casting in ferrous metallurgy. Through the method, the corner cracks of the peritectic steel slab can be eliminated, other surface crack defects cannot be generated, and thus the quality of the peritectic steel continuous casting slab is effectively improved. The main contents of the method are as follows: 1) the energy-speed ratio C of a mould in the solidification process is controlled to be unchanged; 2) the ratio of the water quantity in each section of a secondary cooling zones to the total water quantity in the secondary cooling zones is as follows: a foot roller section: 27%-29%, a bending section: 35%-37%, a fan-shaped section I: 14%-15%, a fan-shaped section II: 8%-9%, and fan-shaped sections III-IV: 9%-10%; when the casting speed is less than or equal to 1.1 m/min, fan-shaped sections V-IX do not spray cooling water; when the casting speed is faster than or equal to 1.1 m/min, the spraying quantity of the fan-shaped sections V-VI is 2%-3%, and other sections do not spray cooling water; when the casting speed is faster than or equal to 1.3 m/min, the spraying quantity of the fan-shaped sections VII-IX is 2%-3%; and no spraying is performed in an area, 100 mm away from edge of the casting slab, of the fan-shaped sections. The technical scheme provided by the invention is suitable for the cooling process of steel continuous casting.

4. 发明专利

AU2020101365A4 DEVICE AND METHOD FOR MEASURING OVERBURDEN OF INJECTED GAS IN CYCLIC GAS INJECTION DEVELOPMENT OF CONDENSATE GAS RESERVOIR 未知
公开(公告)号：AU2020101365A4
公开(公告)日：2020-08-20
申请号：AU2020101365
申请日：2020-07-14
申请人： UNIV BEIJING SCIENCE & TECHNOLOGY
发明人： ZHU WEIYAO , HUANG KUN , XIA JING , LUO KAI , LIU QING , YUE MING , SONG ZHIYONG , WANG BAICHUAN
IPC分类号： E21B49/00 , E21B47/00 , G01N7/00
摘要： The present invention provides a device and a method for measuring overburden of injected gas in cyclic gas injection development of condensate gas reservoir. The device comprises sand packed model and temperature control system. The temperature control system is nested outside the sand packed model. The sand packed model comprises sand pack cell, four gas inlets, four gas outlets, bracket, direction control component, rotating shaft, upper cover, lower cover, fixing bolts, two top pressuring inlets, pressure transmission rods, pressure transfer piston and multiple gas sampling ports. The sand pack cell can be filled with quartz sand of different particle size and composition, and the angle of the whole device is adjusted by the direction control component. Designing experiment plan and analyzing reservoir rhythm distribution characteristics screening, cleaning and drying quartz sand calculating the permeability of each layer, fill sand into the device according to the design, and control the thickness of each layer of sand body adjusting experimental instrument connecting the pipelines, testing the air tightness and increasing the temperature and pressure, and saturating the condensate gas conducting a displacement test chromatographic analysis of sampling gas processing content data, plotting component distributing cloud chart, and analyzing gas flow law Figure

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