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"Influences of thermal crown and wear crown of work roll on strip shape" by Lianjie Li, Haibo Xie et al.

Thermal crown and wear crown of work roll (TWW) are the main interfering factors of loaded roll gap profile in tandem cold rolling (TCR). However, the effect of TWW on the strip shape is not well understood. This paper presents a quantitative study about the effect of TWW on the strip crown and strip flatness based on a novel 3D multi-pass elastic-plastic finite element (EPFE) model that has been validated by industrial trials in the TCR. The results show that the thermal crown introduces the centre wave and quarter wave, while the wear crown brings in the edge wave and edge-centre coupled wave; the thermal crown has a larger influence efficiency on the quadratic strip shape than the wear crown does, while the wear crown exerts a larger influence efficiency on the quartic strip shape than the thermal crown does. In addition, the influence efficiency of TWW on the strip crown decreases nonlinearly with an increase in strip plastic rigidity from Pass 1 (P1) to Pass 5 (P5). This is the fi ....

3d Multi Pass Elastic Plastic Finite Element Model , Trip Shape , Andem Cold Rolling , Hermal Crown , Bear Crown ,

07.01股市早8点丨刚刚,大利好来了!_中金在线财经号

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Hong Kong , Country The Fund , Shanghai The Shenzhen Stock Exchange , Fund Market , Hong Kong Exchange Notice , Friday Shanghai Shenzhen Pass , Shenzhen Stock Exchange , Christian Democrats , Bear Crown , Army North , ஹாங் காங் , நிதி சந்தை , ஷென்சென் ஸ்டாக் பரிமாற்றம் , கிறிஸ்துவர் ஜனநாயகவாதிகள் , இராணுவம் வடக்கு ,

市场阴晴不定 明星基金经理几家欢喜几家愁-基金频道-和讯网


这一阶段,港股和A股“牛”冠全球,深证成指和恒生指数都以10.31%的涨幅并列16大全球主要股指的第一名,而创业板指甚至还以15.09%远远跑赢这两个冠军。
此时权益基金业绩表现非常出色,由于基金抱团股大涨,明星基金经理管理的基金便是暴涨,受到基民的热情追捧。
第二阶段是春节之后(2021-2-18至2021-3-15)A股暴跌阶段。
这一阶段A股“熊”冠全球,回吐了今年初的所有涨幅。年初怎么涨上去的就怎么跌回来。16大全球主要股指中,涨幅倒数第一是深证成指-15.30%,倒数第二是恒生指数-7.24%,倒数第三是上证指数-6.43%。
而创业板指-22.55%,甚至远超跌幅冠军深证成指的-15.30%,而科创50指数-14.87%与深证成指差不多。
从主动权益类基金来看,这一时期,偏股混合型基金的收益平均为-14.45%。
上证指数、深证成指、创业板指、科创 ....

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