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Coupling Thermomechanical and Microstructural FE Analysis in Plate rolling Process

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Journal of Iron and Steel Research International 2008年第4期15卷 42-50页

作者： LI Xue-tong WANG Min-ting DU Feng-shan College of Mechanical Engineering Yanshan University Qinhuangdao 066004 Hebei China

Using three-dimensional rigid-viscoplastic finite element method （FEM）, a coupling multivariable numerical simulation model for steel plate rolling has been established based on the physical metallurgy microstructural evolution rule and experiential equations. The effects of reduction, deformation temperature, and rolling speed on the deformation parameters and microstructure in plate rolling were investigated using the model. After a typical rolling process of steel plate 16Mn is simulated, the strain, temperature, and microstructure distributions are presented, as well as the ferrite grain transformation during the period of cooling. By comparing the calculated ferrite grain sizes with measured ones, the model is validated.

关键词： hot rolling plate FEM microstructure coupling

Head and Tail Shape Control in Vertical-Horizontal rolling Process by FEM

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Journal of Iron and Steel Research International 2009年第5期16卷 35-42页

作者： ZANG Xin-liang LI Xue-tong DU Feng-shan Department of Mechanical Engineering Yanshan University Qinhuangdao 066004 Hebei China

Using 3D rigid-plastic finite element method （FEM）, a numerical simulation model for nonsteady state vertical-horizontal rolling process in roughing trains was built and was validated by comparing the simulated values with experimental ones of width and shape of the stock ends. According to certain 2050 roughing processing technologies, the short shape control （SSC） of the stock ends was investigated using the model. Based on the simulated results, a new SSC model was developed. The analyzed results showed that the new SSC model is effective in improving the shape of the stock ends.

关键词： hot rolling FEM simulation edging shape control

Thermal Response of Mould in High Speed Casting of Stainless Steel Billet

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Journal of Iron and Steel Research International 2002年第2期9卷 15-20页

作者： WANG Bao-feng SAMARASEKERA I V Baotou University of Iron and Steel Tech University of British Columbia

The hot rolling of slab was studied with the aid of elastic plastic and thermomechanical couple FEM. On the basis of experiment and numerical analysis, the physical models for interfacial heat transfer during hot rolling were established. The results indicated that the deformation, cracking and decohesion behavior of the oxide scale have considerable effects on temperature distribution of slab during hot rolling.

关键词： interfacial heat transfer oxide scale temperature distribution hot rolling

Application of Microstructure Engineering in Steel Coil Cooling Process

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Journal of Iron and Steel Research International 2005年第2期12卷 37-44页

作者： LIUZheng-dong DQJin IVSamarasekera JKBrimacombe CentralIronandSteelResearchInstitute Beijing100081China TheTimkenCo Ohio44706USA UniversityofBritishColumbia VancouverV6T1Z4Canada

The coil cooling and its role in a hot strip mill were reviewed. A mathematical model was developed to describe and analyze the thermal history and its impact on precipitation phenomena during coil cooling for plain carbon, HSLA-V and HSLA-Nb steels. The predicted result of the thermal model was compared with that measured from industrial coil. The effect of cooling condition and coil dimension on the thermal history and final mechanical properties of the steel strip was examined. The coiling temperature and cooling rate have crucial influence on the precipitation strengthening.

关键词： hot rolling steel coil cooling process modeling

Texture of Cold Rolled Strip of Fe-3Si Steel Produced by Thin Slab Casting and rolling

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Journal of Iron and Steel Research International 2011年第3期18卷 40-46页

作者： LI Chang-sheng YANG Hua WANG Yan-fang YU Yong-mei State Key Laboratory of rolling and Automation Northeastern UniversityShenyang 110004LiaoningChina Shougang Qian'an Iron and Steel Corporation Qian'an 064404HebeiChina

The hot rolled strip of Fe-3Si steel was experimentally produced by thin slab casting and rolling（TSCR） process in the *** texture evolution rule was investigated during hot rolling and cold *** texture distribution of cold rolled strips with four kinds of cold rolling reduction schedules was observed through X-ray diffraction method,and the orientation density variation of 1/16 layer,1/8 layer,1/4 layer,and 1/2 layer in thickness was *** cold rolled texture of steel A with four kinds of cold rolling reduction schedules was mainly composed of α and γ *** rolling reduction ratio of 70% was more beneficial for obtaining more γ *** γ fiber texture orientation density of {111}01-1 and {111}1-1-2 was the largest on the 1/8 layer and 1/4 layer and the least on the 1/16 layer and 1/2 layer for steel *** texture orientation density of {001}-{223}11-0 in the α fibers for steel C was increased,but the texture orientation density of {332}-{110}11-0 was low.

关键词： silicon steel texture hot rolling cold rolling thin slab continuous casting direct rolling

Effects of rolling Parameters on Texture and Formability of High Strength Ultra-Low Carbon BH Steel

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Journal of Iron and Steel Research International 2013年第6期20卷 75-81页

作者： CHEN Yin-li SU Lan ZHAO Ai-min KUAI Zhen LI Ben-hai LIU Guang-ming Engineering Research Institute University of Science and Technology Beijing Shougang Research Institute of Technology

The effects of hot rolling and cold rolling parameters on texture and r （ plastic strain ratio ） value of high strength ultra low carbon bake hardening （ ULC-BH ） steels are studied with orientation distribution function （ ODF ） structural analysis *** hot rolling , the high strength ULC-BH steel sheet has weakγ-fiber with uniform orientation distributions , and weakα-fiber , of which { 445 } component forms a high intensity peak at coiling temperature of 750℃.After cold rolling , both { 111 } -{ 111 } intensity on theγ-fiber and{ 111 -}{ 112 } intensity on theα-fiber *** a result of substitutional solute elements Mn and P being added to the steel , strong { 112 } deformation texture component is observed onα-fiber , especially at 80%cold rolling reduction , and this leads to the strong { 111 } recrystallization texture after *** increase of cold rolling reduction shifts the maximum intensity on theγ-fiber from { 111 } to { 111 } .After annea-ling , a very strongγ-fiber is obtained , with intensity peak at { 111 } component when cold rolling reduction reaches 80%.Increasing coiling temperature and cold rolling reduction improveγ-fiber intensity and r value , resulting in good deep drawability.

关键词： hot rolling cold rolling texture bake hardening steel

Rectangular Section Control Technology for Silicon Steel rolling

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Journal of Iron and Steel Research International 2015年第3期22卷 185-191页

作者： Xiao-chen WANG Quan YANG You-zhao SUN National Engineering Research Center of Flat rolling Equipment University of Science and Technology Beijing

Rectangular section control technology （RSCT） was introduced to achieve high-precision profile control during silicon steel rolling. The RSCT principle and method were designed, and the whole RSCT control strategy was developed. Specifically, RSCT included roll contour design, roiling technology optimization, and control strategy development, aiming at both hot strip mills （HSMs） and cold strip mills （CSMs）. Firstly, through the high-performance variable crown （HVC） work roll optimization design in the upper-stream stands and the limited shifting technology for schedule-free rolling in the downstream stands of HSMs, a hot strip with a stable crown and limited wedge, ：local spot, and single wave was obtained, which was suitable for cold rolling. Secondly, an approximately rectangular section was obtained by edge varying contact （EVC） work roll contour design, edge-drop setting control, and. closed loop control in the upper-stream, stands of CSMs. Moreover, complex-mode flatness control was realized by coordinating multiple shape-control methods in the downstream stands of CSMs. In addition, the RSCT approach was applied in several silicon-steel production plants, where an outsicanding performance and remarkable economic benefits were observed.

关键词： silicon steel rectangular section control technology hot rolling cold rolling edge drop

Influence of thermomechanical processing on microstructure,mechanical and strain hardening properties of single-phase Mg-4Li-0.5Ca alloy for structural application

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Journal of Magnesium and Alloys 2020年第4期8卷 1262-1268页

作者： N.Sriraman S.Kumaran Sathiya Narayanan N School of Mechanical Engineering SASTRA Deemed to be University ThirumalaisamudramThanjavurTamilnadu 613401India Department of Metallurgical and Materials Engineering National Institute of Technology TiruchirappalliTamil Nadu 620015India

The single-phase Mg-4Li-0.5Ca alloy was rolled at three different temperatures(250,300 and 350℃)and followed by annealing at 200°C for 10 *** evaluate the mechanical properties,the tensile test was conducted at a constant strain rate of 10^(-3)s^(-1).Factors influencing the tensile strength and strain hardening properties were assessed by microscopy,XRD and EBSD ***,Kocks-Mecking plots(K-M)were used to determine the different stages of strain hardening exhibited by the variously processed Mg-4Li-0.5Ca alloy test *** ultimate tensile strength has decreased as hot-rolling temperature in creases with increased *** strain hardening properties such as hardening capacity(Hc),strain hardening exponent(n)are increased significantly with an increase in hot rolling temperature and subsequent annealing.

关键词： Mg-4Li-0.5Ca hot rolling Twins Mg2Ca Hardening capacity

Multilayer Clad Plate of Stainless Steel/Aluminum/ Aluminum Alloy

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Journal of Wuhan University of Technology(Materials Science) 2011年第1期26卷 111-113页

作者：袁家伟庞玉华 School of Metallurgy Engineering Xi'an University of Architecture & Technology

The 3, 5, 20 layer clad plate from austenitic stainless steel, pure aluminum and aluminum alloy sheets were fabricated in different ways. The stretch and interface properties were measured. The result shows that 20 layer clad plate is better than the others. Well-bonded clad plate was successfully obtained in the following procedure： Basic clad sheet from 18 layer Al1060/Al3003 sheets was firstly obtained with an initial rolling reduction of 44% at 450 ℃, followed by annealing at 300 ℃, and then with reduction of 50% at 550 ℃ from STS304 on each side. The best 20 layer clad plate was of 129 MPa bonding strength and 225 MPa stretch strength.

关键词： multilayer clad plate hot rolling bonding strength stretch strength