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Effects of finish rolling tension on strip width

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Baosteel Technical Research 2009年第3期3卷 54-57页

作者： ZHANG Suoquan WANG Wei ZHANG Guomin ZHU Tao Metallurgical Process Division Baosteel Research Institute Baoshan Iron ＆ Steel Co. Ltd. Shanghai 201900 China Shanghai Baosight Software Co. Ltd. Shanghai 201900 China

Based on the practical data of a strip hot rolling line and the flow patterns of the rolling process, the principle of the effect of the tension between mill stands on the strip width was analyzed. The results show that the tension between the upstream mill stands has a significant effect on strip width. The width change takes place in the deforming region between two mill stands, the effect of back tension is more than that of forward tension, and the width narrowing takes place in the biting position of the back slip region. Reasonable tension and its gradient setup are therefore significant factors in the accuracy of the strip width control.

关键词： finish rolling tension width spread

Research on Stock Temperature of High Speed Wire Super Steel in finish rolling

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Research on Stock Temperature of High Speed Wire Super Steel...

Derivation of Plastic Specific Work Rate for Equal Area Yield Criterion and Its Application to rolling

第二届先进钢铁结构材料国际会议

作者： XIE Yingjie~1, FANG Qi~1, WANG Xiaowen~1, ZHAO Dewen~1, LIU Xianghua~1, WANG Guodong~1, REN Yuhui~2, SUN Jianlun~2, WANG Lihui~2, BAI Xifeng~2, HAN Litao~2 (1. State Key Lab of rolling and Automation, Northeastern University, Shenyang 110004, China 2. Rod Mill of Angang New Steel Co. Ltd., Liaoning Anshan 114002, China)

＜正＞The research on the super steel technology about wire products had been paid great attention recently in China. By means of optimal rolling and cooling schedules, the yield strength of plain carbon steel wire products of adding no micro-alloy elements was up to more than 400 MPa in present paper.A calculating method of changes in stock temperature in finishing rolling was given out. In calculating the plastic deformation work the mathematical model of yield strength for plain carbon steel was tested through Gleeble 1500 thermal/mechanical simulator and regressed in our lab. The calculated results show that the temperature rise is about 150℃which is basically consistent with the measured ones. By flowing cooling water through guides between stands of finish rolling mill, the temperature rise was about dropped by 40℃.

关键词： Stock Temperature High Speed Wire finish rolling Temperature Rise

来源： cnki会议评论

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Journal of Iron and Steel Research International 2010年第4期17卷 34-38页

作者： ZHAO De-wen FANG Qi LI Can-ming LIU Xiang-hua WANG Guo-dong State Key Laboratory of rolling and Automation Northeastern University Shenyang 110004 Liaoning China

On the basis of the analysis of the hexagons inscribed and circumscribed of the Mises yield circle on the π- plane in Haigh Westergaard stress space, a new equation called equal area linear yield criterion or EA criterion was proposed, and its plastic specific work rate was derived. Then, a generalized worked example of plate rolling was analyzed by the criterion and its corresponding plastic specific work rate. Finally, the precision of the solution was compared with measured roll separation force in plate finish rolling process. It indicates that the calculated results by EA criterion are slightly higher than the measured ones.

关键词： EA yield criterion specific work rate finish rolling analytical solution

FINITE ELEMENT ANALYSIS ABOUT STRESS AND STRAIN OF SURFACE PEELING IN Cu-Fe-P SHEET

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Chinese Journal of Mechanical Engineering 2005年第2期18卷 212-214页

作者： SuJuanhua LiHejun DongQiming LiuPing KangBuxi CollegeofMaterialsScienceandEngineerring NorthwesternPolytechnicalUniversityXi＇an710072.China CollegeofMaterialsScienceandEngineerring HenanUniversityofScienceandTechnologyLuoyang471003China CollegeofMaterialsScienceandEngineerring NorthwesternPolytechnicalUniversityXi＇an710072.China

The microstructure of surface peeling in finish rolled Cu-0.1Fe-0.03P sheetis analyzed by scanning electron microscope and energy dispersive spectroscope. Fe-rich areas ofdifferent contents are observed in the matrix. The stress distributions and strain characteristicsat the interface between Cu matrix and Fe particle are studied by elastic-plastic finite elementplane strain model. Larger Fe particles and higher deforming extent of finish rolling are attributedto the intense stress gradient and significant non-homogeneity equivalent strain at the interfaceand accelerate surface peeling of Cu-0.1Fe-0.03P lead frame sheet.

关键词： Cu-0.1Fe-0.03P sheet Surface peeling finish rolling Finite elementanalysis Stress and strain