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設計不銹鋼鑄造結構的三大注意事項

來源:未知佚名2018-11-28瀏覽
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  由于不銹鋼鑄造在金屬型中冷卻凝固得比砂型中快,金屬型又無容讓性,因此在金屬型鑄造時,鑄件金巴黎彩票中產生的鑄造應力比砂型鑄件要大裂紋傾向性也大,還容易產生澆不足、冷隔、白口(對于鑄鑄件)等缺陷。通常:

金巴黎彩票   (1)ZAIFANGZHIBUXIUGANGZHUZAOCHANSHENGJIAOBUZU、LENGGEDENGFANGMIANYINGZHUYIYIXIAJIEGOUWENTI:A、ZHUJIANDEWAIXINGYINGJINLIANGJUYOULIUXIANXINGBIMIANJIANLENGJIAOYUJIJUBIANHUADELIANJIEDENGJIEGOUXINGZHUANG,YILIYUJINSHUYEDELIUDONG;B、ZHUJIANBIHOUYAOSHIDANGBUNENGGUOBO,TEBIESHIDANGZHUJIANLUNKUOCHICUNJIAODASHIGENGBUNENGGUOBO; C、YINGBIMIANDADESHUIPINGMIAN,YINWEITASHIDEZHUJIANZAIJIAOZHUSHI,JINSHUYESHANGSHENGDEHENMAN,YUKONGQIJIECHUDEMIANDA,YIYANGHUA,TONGSHIYOUYUJINSHUXINGSANREKUAI,JINSHUYEHENKUAISHIQULIUDONGXING,YIZAOCHENGJIAOBUZU、LENGGE、JIAZHADENGQUEXIAN;

  (2)ZAIFANGZHIBUXIUGANGZHUZAOCHANSHENGLIEWENFANGMIANYINGZHUYIYIXIAJIEGOUWENTI: ADUIYUJIEGOUSHANGBIJIAOBORUODEBUFENYINGSHELEI、TUTAIDENGYUYIJIAQIANG,YIFANGZHUZAOLIEWEN; B、ZAIZHUJIANSHANGBUZHIJIAQIANGLEISHI,HUANYINGKAOLVDAOTADUIZHUJIANSHOUSUODEYINGXIANG;C、YINGJINLIANGJIANSHAOYOUZUAIZHUJIANZIYOUSHOUSUODETUTAI、LEI、TUYUANDENGTUCHUBUFEN; D、ZAIBIHOUJUNYUN、BIJIANGUODUYULIANJIEYAOHUANHE、JIAOJIAOCHUYUANJIAOSHIDANGDENGGEFANGMIANDEYAOQIUYINGBISHAXINGZHUZAOZHUJIANGENGYANGEYIXIE; E、YINGJIANGCHUIZHIXIANGLIANDEBIGAIWEIQINGXIEXIANGLIAN。

  2、在設計不銹鋼鑄造的基本結構單元及其參數選定時,通常還應注意:(1)為防止鑄鐵件產生白口,除從工藝上采取措施外,必須使其壁厚不能過薄(有些資料指出,壁厚在15mm以上時,用金屬型鑄造鑄件的轉角處都必須采用圓角,對于鋁合金、鎂合金金屬型鑄造鑄件的鑄造圓角不應小于3-4m,對于鑄鐵、鑄鋼、銅合金金屬型鑄造件金巴黎彩票的鑄造圓角可參見表1.1-32選取;(2)由于金屬型和芯無讓性,為便于取出鑄件和抽出型,金屬型鑄造鑄件的鑄造斜度應比砂型鑄造件的適當大一些,一般應大30%-50%,應該指出:鑄造斜度大小除與合金種類、壁的高度有關外,還與鑄件表面的位置有關,凡在鑄件冷卻收縮時與金屬型表面有脫離傾向的鑄件表面可設計較小的斜度,而在鑄件收縮時趨向于壓緊在金屬型上的鑄件表面應給予較大的斜度,各種合金的不銹鋼鑄造的鑄造斜度;

金巴黎彩票   (3)YOUYUJINSHUXINGSANREKUAI,YINCIBUXIUGANGZHUZAODEZUIXIAOBIHOUYINGBISHAXINGZHUZAOZHUJIANDEYAODAYIXIE,GEZHONGZHUZAOHEJIN、BUTONGDAXIAODEZHUZAOZUIXIAOBIHOU;(4)ZHUJIANNEIBIHENEILEIDEHOUDUYIBANYINGQUXIANGLIANWAIBIHOUDUDE0.6-0.7,FOUZEYOUYUNEIBI(LEI)LENGDEMAN,ZAIZHUJIANSHOUSUOSHIYIZAINEIWAIBIJIAOJIECHUCHANSHENGLIEWEN。

  3、ZAISHEJIXINGZHUANGJIAOFUZADEBUXIUGANGZHUZAOSHI,RUGUOSHENGCHANGONGYIYOUJIAODADEKUNNAN,YINGZAIBUYINGXIANGZHUJIANSHIYONGTIAOJIANXIA,JINLIANGSHIZHUJIANWAIXINGJIANDAN,QIANGGOUGAIBIAN,YIBIANYUCONGJINSHUXINGZHONGQUCHUZHUJIAN。

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