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硫和氧在球墨鑄鐵中的應用

來源:未知 佚名 2019-09-23 瀏覽
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  DUIHUIZHUTIEERYAN,JINGRONGLIANGUOCHENGZHIDEDETIEYEZHONGHANYOUSHILIANGLIUHEYANG,SHICIHOUJINXINGYOUXIAOYUNYUCHULIDEZHONGYAOTIAOJIAN,SHIBUKEQUESHAODE。

  MUQIAN,DUIZHUTIEYUNYUZUOYONGDEJIZHISHANGWEIWANQUANRENSHI,RENGCUNZAIDUOZHONGSHUOFA。QIZHONG,FEIJINSHUJIAZAWUCHENGHESHUOYIDEDAOGUANGFANDERENTONG。TONGCHANGYONGYUZHUTIEDEYUNYUJI,YIGUIWEIZHUYAOCHENGFEN,HUANHANYOUSHAOLIANGLV、GAI、GAO、BEIDENGYUANSU。JIAOZHUQIANXIANGTIEYEZHONGJIARUYUNYUJIHOU,QIZHONGDEHUOXINGYUANSUYUTIEYEZHONGHANYOUDELIU、YANGZUOYONG,SHENGCHENGDALIANGWEIXIDEYANGHUAWU、LIUHUAWUHELIUYANGFUHEHUAHEWU,MISANYUTIEYEZHONG。ZAIHUIZHUTIETIEYEDEGONGJINGNINGGUGUOCHENGZHONG,ZHEXIEJIAZAWUNENGZUOWEISHIMODEWAILAIJINGHE,CUJINSHIMOSHENGHE、SHIGONGJINGTUANXIHUA。

  因此,灰鑄鐵孕育處理前的原鐵液中,硫含量不宜低于0.06%,最好保持在0.06%~0.08%之間。原鐵液中硫含量很低時,還有必要故意加入‘硫化亞鐵’使其增硫;氧含量,一般在20×14-4%~30×10-4%之間。 對球墨鑄鐵而言,硫和氧都是有害元素。特別是硫,屬于作用很強的反球化元素,只在原鐵液中的含量降低到0.02%以下,才能保證石墨的球化良好,采用型內球化工藝時,還應使硫含量降低到0.01%。因此,降低原鐵液中的硫含量,是進行球化處理的前提。生產球墨鑄鐵件金巴黎彩票時,必須嚴格控制爐料,以確保鐵液中的硫含量低,必要時應進行爐外脫硫作業。 在球墨鑄鐵原鐵液中加鎂進行球化處理時,鎂與鐵液中的硫和氧發生反應,生成MgS和MgO。有資料說,加鎂后可使鐵液中的硫含量降低80~90%,氧含量降低40~50%。可見,鐵液中的硫、氧含量高,將使球化劑中的鎂大量損失,導致球化作用難以控制,而且會造成大量熔渣。所以,生產球墨鑄鐵件時,對硫和氧都是避之尤恐不及的。 既然如此,在灰鑄鐵中有促進石墨生核作用的氧化物、硫化物和硫氧復合化合物,在球墨鑄鐵中可否起同樣地作用?如何才能利用這種作用?是大家所關心的問題。

金巴黎彩票   YI、YANGHUAWU、LIUHUAWUHELIUYANGFUHEHUAHEWUZAIQIUMOZHUTIEZHONGDEZUOYONG

  GENJUYIXIEYANJIUGONGZUODEJIEGUO,YANGHUAWU、LIUHUAWUHELIUYANGFUHEHUAHEWUZAIQIUMOZHUTIEZHONGTONGYANGYENENGZUOWEIQIUZHUANGSHIMODEWAILAIJINGHE。RUGUOYUNYONGDEDANG,JIANGHANLIU、YANGDEYUNYUJIYONGYUQIUMOZHUTIE,KEDUOFANGMIANDIGAISHANQIUMOZHUTIEDEXINGNENG,RU:

金巴黎彩票   ? SHIMOQIUDECHICUNJIANXIAO,SHULIANGZENGDUO、QIUHUALVTIGAO;

  ? JIANQINGZHUTIEDEBAIKOUQINGXIANG,YOULIYUZHIZAOBOBIQIUMOZHUTIEJIAN;

  ? 生產厚壁鑄件時,可減輕晶間偏析,提高鑄件質量; ?

  SHENGCHANHOUBIZHUJIANSHI,KEJIANQINGHUOFANGZHISHIMOPIAOFU; ?

  SHIZHUTIEZUZHIZHONGTIESUTILIANGZENGDUO;

  ? JIANSHAOZHUTIENINGGUGUOCHENGZHONGDESHOUSUO,ZHUJIANCHANSHENGSUOSONG、SUOKONGDEQINGXIANGXIAO。

  ZAIHUIZHUTIEZHONGKEZUOWEISHIMOWAILAIJINGHEDEYANGHUAWU、LIUHUAWUHELIUYANGFUHEHUAHEWU,ZAIQIUMOZHUTIEZHONGDEQINGKUANGJIUHENBUXIANGTONG。HUAXUEHUOXINGHENQIANGDEMEINENGSHIQIZHONGDEDABUFENHUANYUAN,SHENGCHENGMgSHEMgOJINRURONGZHA,YINER,BUZUYIWEIQIUZHUANGSHIMODEXINGCHENGTIGONGYOUXIAODESHENGHETIAOJIAN。

  YINCI,DUIYUQIUMOZHUTIEERYAN,NENGZUOWEIQIUZHUANGSHIMOWAILAIJINGHEDEYANGHUAWU、LIUHUAWUHELIUYANGFUHEHUAHEWU,ZAIRELIXUESHANGYINGBIMEIDEYANGHUAWUHELIUHUAWUGENGWEIWENDING。

金巴黎彩票   ZAITIEYEWENDUXIA,CHANGYONGYUCHULIZHUTIEDEHEJINYUANSUZHONG,SHI、GAIYULIU、YANGDEQINHELIDA YUMEI。YINER,SHISHI、GAIYULIU、YANGJIEHEBUSHIWEIYIZHONGKEQUDEFANGAN。

  SHIKEYULIU、YANGJIEHE,XINGCHENGDEHUAHEWUYOUCeS、Ce2O3、Ce2O2SDENG,ZHEXIEHUAHEWUZAI1500℃

  ZUOYOUSHIWENDINGDE,CHICUNYUEWEI1~3μm,MIDUYUEWEI6.5 g/cm3,JIBENSHANGCHENGQIUXING,KEYIMISANFENBUYUTIEYEZHONG、ZUOWEISHIMODEWAILAIJINGHE,ERQIEYANJIUGONGZUOZHONGYIJIANDAOQIUZHUANGSHIMODEXINBUYOUZHELEIHUAHEWU。

  GAIDEHUAHEWUDUIQIUZHUANGSHIMODESHENGHEYEYOUSHIFENZHONGYAODEZUOYONG。

  ER、YUNYUJI

  YONGYUQIUMOZHUTIEDEYUANTIEYEZHONGLIUHANLIANGDOUHENDI,ERQIEWANGWANGYAOJINXINGLUWAITUOLIUZUOYE,HENNANWENDINGDIJIANGLIUHANLIANGKONGZHIZAIHENZHAIDEFANWEINEI。YUANTIEYEZHONGDEYANGHANLIANGYENANYIZHUNQUEDIKONGZHI。 YINCI,SHENGCHANQIUMOZHUTIEJIANSHI,YAOLIYONGLIUHUAWUHEYANGHUAWUZUOWEIQIUZHUANGSHIMODEWAILAIJINGHE,KEXINGDEFANGFAZHIYISHIJIANGLIU、YANGHESHI、GAIDOUPEIHEYUYUNYUJIZHONG。

金巴黎彩票   SHIYONGYUQIUMOZHUTIEDE、HANSHI、GAI、LIU、YANGDENGDUOZHONGYUANSUDEYUNYUJI,OUZHOUZAOYIYOUSHANGPINGONGYING,QIEYOUDUOZHONGGUIGEDECHANPINYISHIYINGBUTONGDESHENGCHANTIAOJIAN。ZHELEIYUNYUJI,ZHUYAOCHENGFENRENGSHIGUI,DANPEIYOUXIWEIERFENSANDEYANGHUAWUHELIUHUAWU,YINERWAIGUANDUOCHENGHEISEKELIZHUANG。BIAO1ZHONGLIECHULEQIZHONGYIZHONGDEHUAXUECHENGFEN,YOUCIKEJIANZHELEIYUNYUJIDEDAZHIQINGKUANG。

  ZHEZHONGYUNYUJIJIARUTIEYEYIHOU,SHI、GAIYUYUNYUJIBENSHENSUOHANDELIUHEYANGFANYING,YEYUTIEYEZHONGCANLIUDELIUHEYANGFANYING,CHANSHENGLIUHUAWU、YANGHUAWUHELIUYANGFUHEHUAHEWU。ZHEXIEHUAHEWUTONGYANGKEZUOWEIQIUZHUANGSHIMODEWAILAIJINGHE,DUISHIMODESHENGHEYOUZHONGYAODEZUOYONG。SHIHUANKEYIYUQITAWEILIANGYUANSUZUOYONG,XINGCHENGWENDINGDEJINSHUJIANHUAHEWU,YIZHIQIYOUHAIDEYINGXIANG。CAIYONGZHELEIYUNYUJI,RUGUOCHULI、KONGZHIDEDANG,JIUKEYIDEDAOQIANJIESUOLIEDEXIAOGUO。

  YOUYUZHELEIYUNYUJIZHONGHANYOUSHIHEGAI,CHANSHENGDELIUHUAWU、YANGHUAWUHELIUYANGFUHEHUAHEWUDEWENDINGXINGHAO,YONGYUQIUMOZHUTIESHI,KEZAIJIAMEICHULIZHIQIANZUOWEIYUCHULIJIJIARU,JIARUMEIHOUJUEDABUFENRENGNENGBAOCHI,BUZHIBEIMEISUOHUANYUAN。

金巴黎彩票   YOUYUZHELEIYUNYUJIZHONGHANYOULIUHEYANG,JISHIZAIJIAMEICHULIZHIHOU、TIEYEZHONGLIU、YANGHANLIANGHENDISHIJIARU,YENENGXINGCHENGLIUHUAWU、YANGHUAWUHELIUYANGFUHEHUAHEWU,ZUOWEISHIMODEWAILAIJINGHE。YINCI,YEKEZAIQIUHUACHULIHOUYONGYUJIAOZHUGUOCHENGZHONGDESHUNSHIYUNYU。

  SAN、HANLIU、YANG。SHI、GAIDEYUNYUJIDEYINGYONG

  

 

  HUAXUECHENGFENRUBIAO1DEHANLIU、YANG、SHI、GAIDENGYUANSUDEYUNYUJI(YIXIAJIANCHENGXINXINGYUNYUJI),JIKEYONGYUQIUHUACHULIQIANDEYUCHULI,YEKEYONGYUJIAOZHUGUOCHENGZHONGDESHUNSHIYUNYU。

  1、YONGYUYUCHULI

  WEISHIXINXINGYUNYUJIDEYINGYONGDEDAOZUIJIADEXIAOGUO,BIXUCAIYONGYUQITEDIANXIANGSHIYINGDECHULIFANGFA。MUQIANKANLAI,CAIYONGSANBUCHULIFA(JIYUCHULI、QIUHUACHULIHEYUNYUCHULI)XIAOGUOJIAOHAO。

金巴黎彩票   ZAIJIAMEIJINXINGQIUHUACHULIZHIQIAN,YONGXINXINGYUNYUJIDUITIEYEJINXINGYUCHULI,YINRUDESHI、GAIBUJINYUYUNYUJIBENSHENZHONGDELIU、YANGJIEHE,XINGCHENGHUAHEWU,ERQIEYUTIEYEZHONGDELIU、YANGFANYING,SHITIEYEJINYIBUTUOYANG、TUOLIU。ZHELIANGXIANGTIAOJIANDUIYUSHIMODEQIUHUADOUSHIFEICHANGYOULIDE。

  YUCHULISUOYONGYUNYUJIDEJIARULIANG,ANXUYAOJIARUDESHIJISUAN。CONGLILUNSHANGSHUO,RUBUKAOLVWENDU、YALIDENGWAIBUTIAOJIAN,SHIDEJIARULIANGZHUYAOJUEDINGYULIANGZHONGYINSU:

  ? YULIUHEYANGSHENGCHENGWENDINGHUAHEWUSUOXUDELIANG;

金巴黎彩票   ? YUTAI、QIAN、BIDENGYOUHAIYUANSUHUAHEHUOXINGCHENGJINSHUJIANHUAHEWUSUOXUDELIANG。

金巴黎彩票   SHIJISHENGCHANZHONG,HENNANZHUNQUEZHANGWOSHANGSHULIANGFANGMIANDEXINXI,ERQIE,YOUHAIYUANSUDEHANLIANGWANGWANGBIANHUAWUCHANG,QIZAITIEYEZHONGDEZHUANGTAIYEWUCONGDEZHI。DANSHI,ZAISHENGCHANTIAOJIANXIAJINXINGDESHIYANBIAOMING,YIBANQINGKUANGXIA,YIXINXINGYUNYUJIWEIZAITI,SHIDEJIARULIANGWEI0.002~0.006%JIKE。

  BIZAIQIUMOZHUTIEZHONGYOUSHISHIMOXINGZHUANGTUIHUADEZUOYONG,TONGCHANGDOURENWEISHIYOUHAIYUANSU。DANSHI,ZAIYUNYUJIZHONGHANSHIDETIAOJIANXIA,SHIYUBIJIEHEKEXINGCHENGDALIANGJINGHE,SHISHIMOQIUXIXIAO。DUIYUYAOQIUDIWENCHONGJIRENDUDETIESUTIQIUMOZHUTIE(RUQT 400-18L),ZAIJIARUHANSHIYUNYUJIDETONGSHI,JIARUSHAOLIANGDEBISHISHIFENYOUYIDE。RUGUOYOUBIYAOJIABI,KECAIYONGHANBIDEXITUGUITIEHEJIN,HEJINYONGLIANGANJIABI0.001~0.002%JISUAN。

金巴黎彩票   TIEYEJINGYUCHULIHOU,HUANYINGJINXINGQIUHUACHULIHEYUNYUCHULI。

金巴黎彩票   JINGYUCHULIDETIEYE,BUJINYINLIU、YANGHANLIANGJIANGDIKEJIANSHAOMEIDEYONGLIANG,ERQIEHUANYOULINGYIGECUJINSHIMOQIUZHUANGHUADEYINSU,NEIJIUSHITIEYEYUSHIMOJIEMIANCHUDEBIAOMIANZHANGLIDAWEITIGAO。TIEYEDEBIAOMIANZHANGLIYESHIYINGXIANGSHIMOQIUZHUANGHUADEZHONGYAOYINSUZHIYI,YAOSHISHIMOYIQIUZHUANGXICHU,TIEYEYUSHIMOJIEMIANCHUDEBIAOMIANZHANGLIBIXUHENGAO。TIEYEZHONGRONGYOUDELIUHEYANG,DOUSHISHIQIJIEMIANCHUBIAOMIANZHANGLIJIANGDIDEZHONGYAOYINSU。JINGYUCHULIHOU,YUNYUJIZHONGDESHI、GAIKEJIANGTIEYEZHONGDELIUHEYANGTUOCHUDAOHENDIDECHENGDU,JIHUKESHIBIAOMIANZHANGLIBEIZENG。YINCI,QIUHUACHULISHIMEIDEJIARULIANGKEYIJIANSHAO,CANLIUMEILIANGZAI0.03%YIXIARENGNENGBAOCHIQIUHUAZHENGCHANG。

  TIEYEJINGYUCHULIHEJIAMEICHULIHOU,RENGYOUYIDINGDEYANGHANLIANG,YUNYUCHULISHIBAOZHENGSHIMOQIUDESHULIANGDUOHEYUANZHENGDUHAOSUOBIXUDE。ZHEZHONGTIAOJIANXIA,YUNYUJIKEYONG75GUITIE。

金巴黎彩票   2、YONGYUSHUNSHIYUNYU

  JINGQIUHUACHULIHEYUNYUCHULIHOUDETIEYE,RUBAOCHISHIJIANJIAOCHANG,QISHENGHENENGLIJIDAWEIXUERUO,DAOZHIZHUJIANCHUXIANGEZHONGZHILIANGWENTI。RUGUOZAIJIAOZHUGUOCHENGZHONGCAIYONGXINXINGYUNYUJIJINXINGSHUNSHIYUNYU,JIUHUIYOUHENQIANGDESHENGHEZUOYONG。ERQIE,YOUSHIYANJIEGUOBIAOMING:CAIYONGZHEZHONGYUNYUJI,KESHISHIMOQIUDECHICUNDA、XIAOJIANBEI,CHENGSHUANGFENGFENBU,YOUZHUYUJIANSHAOSHOUSUOQUEXIAN。

金巴黎彩票   YIXIAJUJIGEGUOWAIYINGYONGDESHILI,SHUOMINGCHULIDEXIAOGUO。 (1)SHIMOQIUSHULIANGZENGDUO,HOUJIEMIANZHUJIANXIAOGUOYOUWEIMINGXIAN

  某鑄造廠金巴黎彩票制造不同厚度的板狀鑄件,用感應電爐熔煉,澆注時隨流瞬時孕育。原先用含鍶(Sr)的孕育劑,后改用成分如表1所示的新型孕育劑,孕育劑改變前后,不同厚度鑄件上測定的石墨球數見表2。

  

 

  YOUBIAO2KEJIAN,WULUNZHUJIANDEBIHOURUHE,YONGXINXINGYUNYUJISHI,ZHUJIANZUZHIZHONGDESHIMOQIUSHUDOUBIYONGHANSIYUNYUJISHIDUO。

金巴黎彩票   HUANYOUYIDIANYEHENZHIDEZHUYI:YONGXINXINGYUNYUJISHI,40mmHOUZHUJIANDESHIMOQIUSHUDUOYU5mmHOUDEZHUJIAN,SHUOMINGZAIZHUJIANGONGJINGNINGGUDEGUOCHENGZHONGHUANYOUERCISHENGHEZUOYONG,ZHEYESHISHIMOQIUDECHICUNCHENGSHUANGFENGFENBUDEYUANYIN。

金巴黎彩票   CAIYONGXINXINGYUNYUJIHOU,YUNYUJIYONGLIANGJIANGDILEHENDUO,ERZHUJIANCHANSHENGSHOUSUOQUEXIANDEQINGKUANGJIANSHAO。 (2)YONGYUBOBIZHUJIANDEXIAOGUO

金巴黎彩票   MOUZHUZAOCHANGYONGGANYINGDIANLURONGLIAN,YUANXIANYONGHANGUI、GAO、MENG、GAIDEYUNYUJISUILIUSHUNSHIYUNYU,JINGCHANGYUJIANDEWENTISHI:XINGZHUANGFUZADEQIUMOZHUTIEJIANBOBICHUCHUXIANTANHUAWU,ERREJIEBUWEIZEYOUYINSHOUSUOERZHIDESHUSONG。

  GAIYONGXINXINGYUNYUJISUILIUYUNYUHOU,XIAOCHULEBOBICHUDETANHUAWU,FEIHOUCHUDEWEIGUANSHUSONGYEDAWEIJIANQING。SHENGCHANZHONGDEFEIPINLVMINGXIANJIANGDI,ERYUNYUJIYONGLIANGJIANSHAOLE25%。

金巴黎彩票   (3)YONGYUHOUBIZHUJIANDEXIAOGUO

  ZHUYAOCHANPINWEIHOUJIEMIANQIUMOZHUTIEJIANDEMOUZHUZAOCHANG,YONGGANYINGDIANLURONGLIAN,YONGGAIBAOFAJINXINGQIUHUACHULI。ZHUJIANZHILIANGFANGMIANCUNZAIDEWENTIZHUYAOSHISHIMOPIAOFU、PIANXI、SHIMOJIXINGHESHOUSUOQUEXIAN。HOUCAIYONGZAIJIAOBAOZHONGCHONGRUDEFANGSHIJINXINGSHUNSHIYUNYU,BINGYONGHANBEIDEYUNYUJIHEXINXINGYUNYUJIZUOLEDUIBI。

  YONGHANBEIDEYUNYUJISHI,ZHUJIANWEIGUANZUZHIZHONGSHIMOQIUSHUWEI187GE/mm2。

  CAIYONGXINXINGYUNYUJISHI,SHIMOQIUSHUWEI357GE/mm2,ERQIESHIMOQIUCHICUNDEBIANHUAFANWEIJIAOKUAN,CHENGSHUANGFENGFENBU,QIUHUALVYETIGAOLE10%,ZHUJIANDESHOUSUOQUEXIANMINGXIANJIANSHAO。

  YOUYUSHIMOQIUSHUZENGDUO,JINGJIANPIANXIJIANSHAO,ZHUTIEDEKANGLAQIANGDUHECHONGJIRENDUTIGAO,TONGSHIJIAGONGXINGNENGYEXIANZHUGAISHAN,DAOJUSHOUMINGTIGAOLE50%。

  (4)DAMOSHUZHUJIANSHOUSUOQUEXIANJIANSHAO

  MOUZHUZAOCHANGJINGCHANGSHENGCHANMOSHUJIAODADEZHUJIAN,GUANJIANJIEMIANCHUYOUSUOKONGYIZHISHIKUNRAOGONGYIRENYUANDEWENTI。CAIYONGXINXINGYUNYUJIJINXINGSHUNSHIYUNYUCHULIHOU,QUDELEHENHAODEXIAOGUO。

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