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Effects of Technological Parameters on Microstructures and Properties of Low co.t Hot Rolled Dual-Phase Steel on CSP Line

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Journal of Iron and Steel Research(International) 2011年第S1期18卷 615-620页

作者： DONG Rui-feng 1,2,LI De-gang 1,2,YAN Bo 2,WANG Guo-dong 1 (1.The State Key Lab of rolling and Automation,Northeastern University,Shenyang 110004,China 2.Baotou Iron and Steel (Group) co.Ltd,co.pact strip Production Plant,Baotou 014010,China) Northeastern Univ State Key Lab Rolling & Automat Shenyang 110004 Peoples R China Baotou Iron & Steel Grp co.Ltd Compact Strip Prod Plant Baotou 014010 Peoples R China

The effects of technological parameters on microstructures and properties of low co.t hot rolled dual-phase steel was researched by design different finish rolling temperature,mid co.ling temperature between laminar co.ling and UFC (ultra fast co.ling) and stable UFC rate on the same gauge strips with the same chemistry co.position during the manufacture *** is the key for co.trolling co.l temperature to co.trol finish rolling temperature and mid co.ling temperature between laminar co.ling and UFC that based on stable UFC rate *** lower finish rolling temperature,with mid co.ling temperature between laminar co.ling and UFC,the better to form martensite *** foundation of developing the similar productions on the similar product line was *** is good to technological advancement of developing high affixation value production as hot rolled DP steel,TRIP steel *** CSP line.

关键词： finish rolling temperature mid co.ling temperature between laminar co.ling and UFC hot rolled dual-phase steel microstructures and properties

Study of strip-shaped chromatic aberration defects on the surface of an electro-galvanized fingerprint-resistant sheet

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Baosteel Technical Research 2023年第2期17卷 7-14页

作者： HE Yutian HUANG Shengbiao ZHANG Baoping Research Institute Baoshan Iron&Steel Co.Ltd.Shanghai 201999China co.d rolling Mill Baoshan Iron&Steel Co.Ltd.Shanghai 201900China

strip-shaped chromatic aberration defects on the surface of an electro-galvanized fingerprint-resistant sheet were systematically studied using Thermo-Calc thermodynamic calculations,scanning electron microsco.e and X-ray diffractometer analyses,and rapid heat treatment simulation *** formation mechanism of these defects was also *** results show a strong co.relation between the defects and the uneven distribution of the Fe(001)co.ponent on the surface of the steel *** relatively high proportion of Fe(001)co.ponents on the surface of the steel substrate affects the distribution density of the Zn crystal cells in different orientations during the electrodeposition process,which causes the reflection intensity of the light of the galvanized layer to differ from various visual perspectives,and macrosco.ic strip-shaped chromatic aberration defects are finally *** high proportion of the Fe(001)co.ponent on the surface of the steel substrate is mainly related to the following two ***,when the strip steel is hot-rolled,the finishing hot-rolling temperature is close to theγ→αphase transition *** the local temperature on the upper surface of the strip steel is low,γ+αtwo-phase rolling easily occurs,and this results in an uneven stress distribution between theγandαphases after the hot-rolling *** uneven distribution of hot-rolling stress results in the formation of a co.rse grain structure in the local area on the surface of the hot-rolled sheet,which strongly affects the subsequent co.d rolling and annealing process,and the annealed steel sheet substrate ultimately co.tains a greater proportion of the Fe(001)*** seco.d,a fast co.ling rate(>10 K/s)during the slow co.ling stage in the co.tinuous annealing process inhibits the transformation of the Fe(001)to the Fe(111)co.ponent on the surface of the co.d-rolled steel sheet,and it is then not possible to effectively eliminate the influence of the une

关键词： electro-galvanized fingerprint-resistant sheet strip-shaped chromatic aberration defects texture

Cast-rolling force model of multi-roll solid–liquid cast-rolling bonding process for fabricating metal cladding materials

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中国航空学报:英文版 2023年第9期36卷 346-368页

作者： Ce JI Huagui HUANG co.lege of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan 030024China Engineering Research Center of Advanced Metal co.posites Forming Technology and Equipment of Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China National Key Laboratory of Metal Forming Technology and Heavy Equipment Taiyuan University of TechnologyTaiyuan 030024China co.lege of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China National Engineering Research Center for Equipment and Technology of co.d strip rolling Yanshan UniversityQinhuangdao 066004China

Based on twin-roll casting technology and multi-roll groove rolling technology,a Multi-Roll Solid-Liquid Cast-rolling Bonding(MRSLCRB)process was proposed to fabricate Cu/steel cladding bars,which processes the advantages of short flow and ***,it is a typical 3-D thermal-fluid-mechanics co.pled problem,and determining cast-rolling force is difficult during the equipment ***,the geometrical evolution of the cast-rolling area was studied,laying the foundation to establish co.tact boundary equations and analyze mechanical schematics and metal ***,a 3-D steady-state thermal-fluid co.pled simulation model,including casting roll,substrate bar,and cladding metal,was *** Kissing Point(KP)height,average outlet temperature,and process window were predicted,and simulation results of the three-roll layout indicate that the KP distribution along the circumferential direction can be co.sidered ***,the engineering cast-rolling force model was derived based on the differential element method and plane deformation *** accuracy was verified by the 3-D finite element model,and the influences of process layouts and technological parameters on the castrolling force were *** the indirect multi-field co.pled analysis method,the temperature–pressure evolution and reasonable process window can be predicted,which provides a significant basis for guiding equipment design and improving product quality.

关键词： Cast-rolling force Kissing point Multi-field co.pled Numerical simulation Solid-liquid cast-rolling bonding

Development and future prospect of hot strip rolling technology at Baosteel

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Baosteel Technical Research 2008年第3期2卷 38-48页

作者： Huang Chuanqing Zhang Wenxue Hot strip rolling Plant Baosteel Branch Baoshan Iron ＆ Steel Co. Ltd. Shanghai 200941 China

Since the 2050 mm hot strip mill was put into operation in 1989, Baosteel has made great achievements in increasing productivity, developing new process technologies and steel products and improving product quality. In the past 18 years from 1989 to 2007 ,Baosteel has co.structed five hot strip mills with a total annual capacity of 19.8 Mt. Indices for technology standards, product categories and steel grades, product quality, both technically and eco.omically, take the lead domestically or reached the world class level. As there are many hot strip mills that expected to be put into operation by the end of 2010 ,the overall annual capacity will exceed 30 Mt ,and the product will co.er grain oriented （GO） Si steels and alloyed steels.

关键词： hot strip rolling pipeline steel 05 steel sheet tinned sheet co.tainer steel sheet Si steel

Key Refractories Application in Hazelett strip-casting Process

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China's Refractories 2016年第4期25卷 29-32,37页

作者： HUANG Jiayuan YANG Min WANG Ziqiang WANG Dongdong ZHOU Huijun YU Lingyan JIANG Xin Sinosteel Luoyang Institute of Refractories Research co. Ltd. Luoyang Yukong Longquan High-Precision Aluminum strip co. Ltd.

As one of the most mature aluminum sheet co.tinuous strip-casting processes,Hazelett strip-casting has been successfully industrially *** work introduced the key refractory materials for Hazelett strip-casting process,including large-scaled Al;O;ceramic foam filters,wide-feed head boxes,monolithic strip-stream nozzles,and co.tings on ***,the localization of the refractory materials was discussed.

关键词： refractory ceramic strip mature localization boxes scaled downstream sheet imported

Preparation and Processing Properties of Nozzle Plate for Aluminum co.tinuous strip Casting

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China's Refractories 2016年第2期25卷 43-47页

作者： WANG Ziqiang WANG Dongdong YANG Min WANG Gang YU Lingyan ZHOU Huijun Sinosteel Luoyang Institute of Refractories Research Co.Ltd. Luoyang Yugang Longquan High Accuracy Aluminum strip co. Ltd.

The currently used ceramic nozzles for aluminum deep processing co.tinuous hot rolled strips are featured with good integrity, high strength, good processing prop- erty, but non-uniform structure caused by the migration of silica sol. In this work, nozzle materials were prepared with aluminum silicate ceramic fiber, kaolin, and alumi- num tripolyphosphate as starting materials, silica sol or silica sol -epoxy resin as the binder. After pulping, cast- ing, curing at different temperatures and hot treatment, the prepared materials were analyzed in terms of migra- tion layer thickness, co.d modulus of rupture, and micro- structure morphology. The results show that （1） with the same curing temperature, the migration layer thickness of specimens bonded by different binders all decreases with the curing time prolonging; with the same curing time, the migration thickness declines first and climbs then as the curing temperature increases; overall, the specimen cured at 40 ~C for 120 min has the thinnest migration layer; from the co.parison, it is found that the silica sol -epoxy resin bonded specimen has slightly thinner mi- gration layer than the specimen bonded by silica sol only; （2） the specimen bonded by silica sol and epoxy resin has thinner migration layer, lower co.d modulus of rupture and obvious lower bulk density than the silica sol bonded specimen; （3）the material introduced with epoxy resin has better processing property but slightly lower strength than the material bonded by silica sol.

关键词： silica sol epoxy resin alumina ceramicfiber monolithic nozzle migration layer thickness

Un raveling the acetals as ageing markers of Chinese Highland Qingke Baijiu using co.prehensive two-dimensional gas chromatography-time-of-flight mass spectrometry co.bined with metabolomics approach

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Food Quality and Safety 2021年第3期5卷 239-246页

作者：王新磊宋学博朱琳耿晓杰郑福平赵强忠孙啸涛赵东瑞冯声宝赵谋明孙宝国 Beijing Laboratory of Food Quality and Safety Beijing Technology and Business UniversityBeijingChina Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business UniversityBeijingChina School of Food Science and Engineering South China University of TechnologyGuangzhouChina Hebei hengshui Laobaigan Liquor co. Ltd.HengshuiChina Qinghai Huzhu Highland Barley Wine co. Ltd.HuzhuChina

Objectives:The ageing process has a significant impact on the aroma of Chinese Baijiu,which co.ld strengthen the desirable flavor characteristics and reduce the undesirable *** aim of this study was to observe the in itiation of mean in gful cha nges in volatile fracti on and locate the ageing markers during ageing storage of Chinese Highland Qingke *** and Methods:Samples of Chinese Qingke Baijiu were aged for 0,1,2,3,4,5,6,7,8,9,10,and 11 mon ths before an *** samples were isolated by liquid-liquid extraction and then analyzed by co.prehensive two-dimensional gas chromatography-time-of-flight mass *** acquired data were processed by untargeted and targeted metabolomics approach to locate the ageing ***:The untargeted metabolomics analysis(hierarchical clustering analysis,HCA)shows that the chemical co.position of Qingke Baijiu presents a statistically sigrdficant deviation from the reference scenario after 5 mon ***,supervised statistics analysis(orthogo nal partial least squares discrimination analysis)was performed to locate the markers,which changed sigrdficantly during *** markers were located,and seven of them were ***,1,1-diethoxy-propane,1,1-diethoxy-butane,and 1,1-diethoxy-3-methyl-butane are important co.tributors to the flavor of Chinese *** identified markers were applied for the untargeted metabolomics(HCA),and the results revealed that these markers co.ld divide the Qingke Baijiu into two ageing stages,0-5 months and 6-11 ***:The results suggest that it is a valuable tool for monitoring the changes of volatile co.pounds and locating the age markers in Chinese Baijiu.

关键词： Ageing marker metabolomics approach Highland Qingke Baijiu co.prehensive two-dimensional gas chromatog-raphy-time-of-flight mass spectrometry.

Opti mization and Model of Laminar co.ling co.trol Systemfor Hot strip Mills

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Journal of Iron and Steel Research(International) 2006年第1期13卷 18-22页

作者： XIE Hai-bo LIU Xiang-hua WANG Guo-dong ZHANG Zhong-ping State Key Laboratory of rolling and Automation Northeastern University Shenyang 110004 Liaoning China School of Mechanical Engineering Nanhua University Hengyang 421001 Hunan China Hot strip Mill Panzhihua Iron and Steel （Group） Co Panzhihua 617062 Sichuan China

The structure of laminar co.ling co.trol system for hot rolling was introduced and the co.trol mode, co.ling strategy, segment tracking and model recalculation were analyzed. The parameters of air/water co.ling models were optimized by regressing the data gathering in situ, and satisfactory effect was obtained. The co.ling temperature can be co.trolled within ±15℃.

关键词： hot rolled strip laminar co.ling co.trol system model parameter optimization

Mechanism analysis of non-sinusoidal oscillation of co.tinuous casting mold synchronously driven by double servomotors

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Journal of Iron and Steel Research(International) 2017年第3期24卷 251-257页

作者： Chao Zhou Xing-zhong Zhang Fang Wang Ping-fei Liu Yi-ming Fang National Engineering Research Center for Equipment and Technology of co.d strip rolling Yanshan University Qinhuangdao 066004 Hebei China Hebei Agricultural University Qinhuangdao 066003 Hebei China School of Science Yanshan University Qinhuangdao 066004 Hebei China

Due to the disadvantages of co.plexity,high maintenance and vast investment of the electro-hydraulic servo oscillator,a new mechanical device synchronously driven by double servomotors was proposed. The working principle of the non-sinusoidal oscillator was analyzed and the model of the oscillator was validated via simulation ***,taking advantage of resonance technology,the hinging force and moment were calculated. The results showed that the hinging force and driving moment reduced,which was useful in reducing the impact of the hinge and prolonging the service life of the bearing. Besides,the best initial spring pressure was 0. 9 times the mold gravity,which improved the oscillation system stability and reduced the load fluctuation and servomotor driving power.

关键词： co.tinuous casting Mold Non-sinusoidal oscillation Resonance technology Oscillation mechanism