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规定压缩比和最终道次压下量的轧制法 连铸大压下法

作者: 来源: 日期:2016/11/7 21:12:42 人气:140 评论:0 标签:

 GONGKAIZHUANLITIGONGLEZHIJINGYAZHIERQIEYASUOBIXIAOYU2.0JIUKESHENGCHANTEHOUGANGBANDEFANGFA。GAIZHUANLIJIANGLIANZHUBANPIZHONGXINSHUSONGDEYAHEFENJIEWEILIANGGEGUOCHENG:JIANGZHONGXINSHUSONGDEZHONGKONGJIEMIANTIEHEHETONGGUOKUOSANSHIZHONGXINSHUSONGXIAOSHI。JUCI,GAIZHUANLITICHUDEYAZHIYAODIANSHI:

  1)压缩比r和最终道次压下量(t0-t1)应分别满足下面的关系式:r≥0.2×d0+1.0其中d0是连铸板坯中心疏松区的厚度,可从连铸工艺条件和中心疏松区厚度的关系曲线上求出,也可在连铸板坯上取样测定出。t0是被轧材最终道次压下前的厚度(mm)。t1是被轧材最终道次压下后的厚度。

  ZHUYOUJINSHUZHUANLIJISHUGUANJIANSHIZAILIANZHUSHIDUIZHUPIDEZHONGXINSHUSONGJINXINGKONGZHI,JIZAILIANZHUJIMODUANSHEZHIYAXIAGUN,ZAIZHUPIZHONGXINGUXIANGLVDAYU80%SHI,DUIZHUPIJIYUDAYAXIA,DADAOJIANGDIZHUPIZHONGXINSHUSONGCHENGDU,CONGERKEJIANSHAOYAZHISHIDEYAXIABI。DUISHANGSHUZHUPIYONGXIANYOUSHEBEIJINXINGYAXIABIWEI1.5~2.5DEYAZHIJIKEHUODENEIBUZHILIANGYOULIANGDETEHOUGANGBAN。YONGGAIFANGFAZHICHENGDE300mmLIANZHUBANPI,KEYAZHICHENG200mmDETEHOUGANGBAN。

  GAIZHUANLIYANJIULEZHUPIZHONGXINSHUSONGTIJI(Vp0/cm2。g-1)YUZHUPIYAXIALIANG(d/mm)DEGUANXIDECHUVp0=10-(a×d+b)DEGUANXISHI。SHIZHONGaHEbWEIYUGANGDEQIANGDUYOUGUANDECHANGSHU。SHIYANBIAOMING,TONGGUOSHIDANGDEZHUPIYAXIALIANGd,SHIVp0≤0.9×10-4SHI,YONGXIAOYAXIABIYAZHICHUDEGANGBAN,CAIYONGBIYALIRONGQIYAOQIUGENGWEIYANGEDECHAOSHENGBOTANSHANGFA,YEKEDADAOZHILIANGHEGEDEYAOQIU。GAIZHUANLITUIJIANDEZHUPIYAXIALIANGdWEI8~30mm。GAIZHUANLIHAIDECHUZHUPIZHONGXINSHUSONGTIJIVp0、BANCAICHENGPINZHONGXINSHUSONGTIJIVpHEZHUPIYAXIABIrDEGUANXIWEI:Vp=Vp0/r。

 

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