金巴黎彩票

安徽索立德鑄業有限公司

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大型球墨鑄鐵件特有問題的解決途徑分析

來源:本站整理 秩名 2016-06-29 瀏覽
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大型球墨鑄鐵件的類型比較多,如:大型柴油機缸體、大型輪轂、大球磨機端蓋、高爐冷卻壁、大型軋鋼機機架、大型注塑機模板、大型汽輪機軸承座、風電設備中的輪轂及底座以及核電設備中的廢渣罐等。這些部件除必須滿足標準中規定的力學性能外,還有一些特殊性能要求,如風電鑄件要求低溫沖擊韌度,核渣罐有許多附加的特殊驗收標準等等。因此,作為鑄造廠金巴黎彩票來說生產這些鑄件,事先必須做周密的考慮。

大型鑄件

1)首先要考慮的是如何獲得健全、致密、尺寸合格的鑄件

生產大型球墨鑄鐵件的技術流程與灰鑄鐵件金巴黎彩票基本相同,只要結合球墨鑄鐵的特點在縮尺的選定、砂箱設計等方面稍作修正即可。

2)其次要針對大型球墨鑄鐵件的共同特點做相應工作

金巴黎彩票 DAXINGQIUMOZHUTIEJIANDEGONGTONGTEDIANSHITEBIEHOUZHONG,DADUOSHUYAOQIUTIESUTIJITI,LIXUEXINGNENGBIXUMANZUBIAOZHUNSHUJU,YOUSHIWAIJIADIWENCHONGJIXINGNENGYAOQIUDENG。

金巴黎彩票 1 DAXINGQIUMOZHUTIEJIANSHENGCHANDETEYOUWENTI

YOUYUDAXINGQIUTIEJIANLENGQUESUDUHUANMAN,DAOZHIGONGJINGNINGGUQICHANGDASHUXIAOSHI,ERZAICIQIJIANYAOXINGCHENGQIUTIEDEZHUYAOZUZHI,YINERJIUCHUXIANLEDADUANMIANQIUTIEHUODAXINGQIUTIEJIANSUOTEYOUDEYIXILIEWENTI:QIUMOSHULIANGSHAO、QIUMOZHIJINGDA、QIUMOJIBIAN、SHIMOPIAOFU、HUAXUECHENGFENPIANXI、JINGJIANTANHUAWUYIJISUIKUAIZHUANGSHIMO(Chunky Graphite)DENG。ZHEXIEWENTIZAOYISHOUDAOGUANZHU,SUIXINGCHENGJILISHANGBUTONGYI,DANDUIJUTIWENTIYIYOULECHUBUDEJIEJUECUOSHI。

HUANYOUYIGEZHONGYAOWENTISHIRUHEMANZUHEJIEJUEDIWENCHONGJIRENDUDEYAOQIU?WENTIDEQIAOHEZAIYUJIEJUEZHELIANGDANANTIDEFANGXIANGJICUOSHIDAZHIXIANGTONG。

金巴黎彩票 2 JIEJUEDAXINGQIUMOZHUTIEJIANTEYOUWENTIDETUJING

金巴黎彩票 1)QIANGHUALENGQUEYIJIASUNINGGU

GUANYUSUIKUAIZHUANGSHIMODECHENGYINPUBIANJIAOYIJIESHOUDESHUOFAYOUER:YISHIQIUZHUANGSHIMOPOSUIERYINQI;ERSHIYOUYURELIUHUOMOUXIEHEJINYUANSUTEBIESHICe HELa DEPIANXIZAOCHENGAOSHITIWAIKEDEWENDINGXINGJIANGDI,DAOZHIQIUMODESHENGCHANGMOSHIGAIBIANERXINGCHENG。BUGUANNAZHONGLILUNHUOSHUOFA,KEYIKENDINGDESHI,GONGJINGJIEDUANNINGGUSHIJIANTAICHANG(JIHUANMANLENGQUE)SHIXINGCHENGSUIKUAIZHUANGSHIMODEZHIJIEHEKEGUANYINSU。YINCIBUGUANCAIQUSHENMEFANGFA,ZHIYAONENGSUODUANNINGGUJIEDUANDESHIJIAN,DOUKEYOUXIAODIZUZHISUIKUAIZHUANGSHIMODECHUXIAN。

金巴黎彩票 YEYOUWENXIANZHICHU,QIUMOJIBIANYOUYIGELINJIELENGQUESUDU(0.8 ℃/min)[1]。SHIMOJIBIANYOUSHISHIYIGETUBIANGUOCHENG,YINCIJIASULENGQUE,SUODUANNINGGUSHIJIAN,TEBIESHISUODUANGONGJINGJIEDUANDENINGGUSHIJIAN,XIANGFANGSHEFASHIGONGJINGNINGGUJIEDUANSUODUANZHI2 h YINEISHIYOUXIANZHUXIAOGUODE。WEIRAOZHEGEYUANZEYOUBUSHAOCUOSHI:QIANGZHILENGQUE;JINSHUXINGGUASHA;SHIYONGLENGTIEDENGDENG。

LENGTIEDEDAORELVDA,TEBIESHIXURENENGLIQIANG,SHIBEIGUANGFANRENWEIKEYIYINGYONGDEYOULICUOSHI。SHIMODEDAORELVGAOYUGUASHALENGTIE(FENBIEWEI45W/m•℃JI17 W/m•℃),DANTADEXURENENGLIBILENGTIEXIAO,JIARUYOUQIANGZHILENGQUEDETIAOJIAN,ZEYONGSHIMOSHIBIJIAOHESHIDE。DUIYUDAXINGHUOTEDAXINGQIUMOZHUTIEJIAN,JINXINGQIANGZHILENGQUERENGBUSHIWEIYIZHONGYOULIDECUOSHI。YIBANKECAIYONGFENGLENG、WULENGHUOSHUILENGZHUANGZHI,SHENZHIKECAIYONGYEDANLENGQUEFANGSHIJIASUZHUJIANDENINGGUSUDU。YOUSHUJUBIAOMING,20 t JIQIUMOZHUTIEFALIAORONGQIZHUJIANNINGGUSHI,QICHUANREXIAOGUOWEI:JINSHUXINGXIREZHAN58%、SHIMOJISHAXING(XINGXINBUFEN)XIREZHAN3.5%、SHAXINGJIQITAZHUANGZHIBUFENXIREZHAN3.5%、SHUILENGDAOREZHAN3.5%。YOUCIKEJIAN,JINSHUXINGKESHIZHUJIAN50%YISHANGDERELIANGCHUANDAOCHUQU,ERXINGXINBUFENCHUANREHENSHAO,XIANRANQIANGZHILENGQUESHIBIYAODE。

2)GAIJINGONGYIJISHU

(1)JINGXINXUANZEYUANCAILIAO

WEILESHENGCHANCHUYOUZHIDAXINGQIUMOZHUTIEJIAN,WULUNZENYANGJINGXUANLULIAODOUSHIZHIDEDE。YUANLIAODEGANRAOYUANSUYINGJINKENENGDI,TEBIEYAOZHUYIDESHISHENGTIELAIYUAN、FEIGANGPINZHONG、ZENGTANJIDEXUANYONG。

(2)HUAXUECHENGFENSHEJI

金巴黎彩票 CE BUNENGGUOGAO(4.2%~4.3%),RUw(C)XUAN3.6%~ 3.7% ,w(Si)ZEBIXUDIZHI1.8% ~2.0% ;LINGWAI,w(Mn)<0.3%,w(P)、w(S)YEYAOYANGEXIANZHI。CHUSHUSHUQINGKUANGWAI,YIBANBUYONGHEJIN,YINERBIXUYANGETIAOXUANFEIGANG。

金巴黎彩票 w(Si)DISHIBIXUZUODAODE,FOUZEYICHUXIANSUIKUAIZHUANGSHIMO,DIWENXINGNENGYEHUIDABUDAOYAOQIU,WENTIJIUCHUZAIYOUYAOw(Si)DI,YOUYAOBUCHUXIANYINw(Si)DIERCHANSHENGDEBIBING。RIBENBAIDUNJIFARANLIAORONGQICHENGFENWEI:w(C) 3.6%,w(Si) 2.01%,w(Mn) 0.27%,w(P) 0.025%,w(S) 0.004%,w(Ni) 0.78%,w(Mg) 0.065%。

(3)XUANZESHUANGLIANRONGLIAN

金巴黎彩票 SHUANGLIANRONGLIANNENGCHONGFENFAHUICHONGTIANLUTIEYECHENGHENENGLIQIANG、DIANLUREXIAOLVGAODETEDIAN。TIEYEBIXUGAOWENCHULU,YOUTIAOJIANSHIKETUOS,ZAIDIANLUNEIDESHIJIANBUYAOTAICHANG。GENJUQINGKUANGJUEDINGQIUHUAWENDU,BUNENGTAIGAOYIBUNENGTAIDI。

BIZHEZHUZHANGDAXINGJIANQIUHUACHULIBUYAOYONGCHONGRUFA,YINWEISHIJIANTAICHANG。ZHISHAOYONGGAIBAOFA,ZUIHAOYONGTESEFAHUOWEISIFA,ZAIGUDINGDIFANGWEISI,SHENZHIKELIANTONGWEIYUNYUSI。QIUHUAJIQIANWANBUYAOYONGCHANGYONGDE,ZUIHAOZHONGXITUQIUHUAJIHEQINGXITUQIUHUAJIHUNHESHIYONG。RUCAIYONGCHONGRUFA,QIUHUAJIZHONGw(Mg) 6%,w(RE) 1.0%~ 1.5%JIUKEYILE;RUSHENGTIEJIAOCHUN,w(RE) 0.5%~1.0%YIKE。RUCAIYONGWEISIFA,KEYONGGAOw(Mg)LIANGDEQIUHUAJI,DANw(RE)YAODI,SHAOHANXIECa JIKE。

澆注溫度要合適(1300~1350 ℃),不要太高,否則液態收縮太大;宜采用分散內澆道中速澆注,盡可能用高剛度鑄型以充分利用石墨化膨脹進行球墨鑄鐵的自補縮,減輕冒口負擔,確保鑄件內部致密。

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