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鑄鐵的石墨化過程及影響鑄鐵石墨化的因素

來源:未知 佚名 2019-02-27 瀏覽
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  YI、ZHUTIEDESHIMOHUAGUOCHENG

  ZHUTIEZHONGSHIMODEXINGCHENGGUOCHENGCHENGWEISHIMOHUAGUOCHENG。ZHUTIEZUZHIXINGYINGDEJIBENGUOCHENGJIUSHIZHUTIEZHONGSHIMODEXINGCHENGGUOCHENG。YINCI,LEJIESHIMOHUAGUOCHENGDETIAOJIANYUYINGXIANGYINSUDUIZHANGWOZHUTIECAILIAODEZUZHIYUXINGNENGSHISHIFENZHONGYAODE。

金巴黎彩票   GENJUFe-CHEJINSHUANGZHONGZHUANGTAITU,ZHUTIEDESHIMOHUAGUOCHENGKEFENWEISANGEJIEDUAN:

  DIYIJIEDUAN,JIYEXIANGYAGONGJINGJIEJINGJIEDUAN。BAOKUO,CONGGUOGONGJINGCHENGFENDEYEXIANGZHONGZHIJIEJIEJINGCHUYICISHIMOHEGONGJINGCHENGFENDEYEXIANGJIEJINGCHUAOSHITIJIASHIMOYOUYICISHENTANTIHEGONGJINGSHENTANTIZAIGAOWENTUIHUOSHIFENJIEXINGCHENGDESHIMO。

  ZHONGJIANJIEDUAN,JIGONGJINGZHUANBIANYAGONGXIZHUANBIANZHIJIANJIEDUAN。BAOKUOCONGAOSHITIZHONGZHIJIEXICHUERCISHIMOHEERCISHENTANTIZAICIWENDUQUJIANFENJIEXINGCHENGDESHIMO。

  DISANJIEDUAN,JIGONGZHEZHUANBIANJIEDUAN。BAOKUOGONGZHEZHUANBIANSHI,XINGCHENGDEGONGXISHIMOHEGONGXISHENTANTITUIHUOSHIFENJIEXINGCHENGDESHIMO。

  ER,YINGXIANGZHUTIESHIMOHUADEYINSU

  ZHUTIEDEZUZHIQUJUEYUSHIMOHUAJINXINGDECHENGDU,WEILEHUODESUOXUYAODEZUZHI,GUANJIANZAIYUKONGZHISHIMOHUAJINXINGDECHENGDU。SHIJIANZHENGMING,ZHUTIEHUAXUECHENGFEN、ZHUTIEJIEJINGDEDELENGQUESUDUJITIESHUIDEGUOREHEJINGZHIDENGZHUDUOYINSUDOUYINGXIANGSHIMOHUAHEZHUTIEDEXIANWEIZUZHI。

金巴黎彩票   1.HUAXUECHENGFENDEYINGXIANG

金巴黎彩票   ZHUTIEZHONGCHANGJIANDEC,Si、Mn、P、SZHONG,C,SiSHIQIANGLIECUJINSHIMOHUADEYUANSU,SSHIQIANGLIEZUAISHIMOHUADEYUANSU。SHIJISHANGGEYUANSUDUIZHUTIEDESHIMOHUANENGLIDEYINGXIANGJIWEIFUZA。QIYINGXIANGYUGEYUANSUBENSHENDEHANLIANGYIJISHIFOUYUQITAYUANSUFASHENGZUOYONGYOUGUAN,RUTi、Zr、B、Ce、MgDENGDOUZUAISHIMOHUA,DANRUOQIHANLIANGJIDI(RUB、Ce<0.01%,T<0.08%)SHI,TAMENYOUBIAOXIANCHUYOUCUJINSHIMOHUADEZUOYONG。

金巴黎彩票   2.LENGQUESUDUDEYINGXIANG

  一般來說,鑄件冷卻速度趨緩慢,就越有利于按照Fe-G穩定系狀態圖進行結晶與轉變,充分進行石墨化;反之則有利于按照 Fe-Fe3C亞穩定系狀態圖進行結晶與轉變,最終獲得白口鐵。尤其是在共析階段的石墨化,由于溫度較低,冷卻速度增大,原子擴散困難,所以通常情況下,共析階段的石墨化難以充分進行。

金巴黎彩票   ZHUTIEDELENGQUESUDUSHIYIGEZONGHEDEYINSU,TAYUJIAOZHUWENDU、ZAOXINGCAILIAODEDAORENENGLIYIJIZHUJIANDEBIHOUDENGYINSUYOUGUAN。ERQIETONGCHANGZHEXIEYINSUDUILIANGGEJIEDUANDEYINGXIANGJIBENXIANGTONG。

金巴黎彩票   TIGAOJIAOZHUWENDUNENGGOUYANHUANZHUJIANDELENGQUESUDU,ZHEYANGJICUJINLEDIYIJIEDUANDESHIMOHUA,YECUJINLEDIERJIEDUANDESHIMOHUA。YINCI,TIGAOJIAOZHUWENDUZAIYIDINGCHENGDUSHANGNENGSHISHIMOFENHUA,YEKEZENGJIAGONGXIZHUANBIAN。

  3.ZHUTIEDEGUOREHEGAOWENJINGZHIDEYINGXIANG

金巴黎彩票   ZAIYIDINGWENDUFANWEINEI,TIGAOTIESHUIDEGUOREWENDU,YANCHANGGAOWENJINGZHIDESHIJIAN,DOUHUIDAOZHIZHUTIEZHONGDESHIMOJIZUOZUZHIDEXIHUA,SHIZHUTIEQIANGDUTIGAO。JINYIBUTIGAOGUOREDU,ZHUTIEDECHENGHENENGLIXIAJIANG,YINERSHISHIMOXINGTAIBIANCHA,SHENZHICHUXIANZIYOUSHENTANTI,SHIQIANGDUFANERXIAJIANG,YINERCUNZAIYIGE‘LINJIEWENDU’。LINJIEWENDUDEGAODI,ZHUYAOQUJUEYUTIESHUIDEHUAXUECHENGFENJIZHUJIANDELENGQUESUDUYIBANRENWEIPUTONGHUIZHUTIEDELINJIEWENDUYUEZAI1500-1550℃ZUOYOU,SUOYIZONGXIWANGCHUTIEWENDUGAOXIE。

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