江西11选5

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低压铸造的气孔缺陷特征、分类、形成机理及防治措施?
2018/5/10 阅读次数:[649]

1、TEZHENG 

(1)QIKONG:ZHUJIANNEIBUYOUQITIXINGCHENGDEKONGDONGLEIQUEXIAN。QIBIAOMIANYIBANBIJIAOGUANGHUA,ZHUYAOCHENGLIXING、YUANXINGHUOTUOYUANXING。YIBANBUZAIZHUJIANBIAOMIANLUCHU,DAKONGCHANGGULICUNZAI,XIAOKONGZECHENGQUNCHUXIAN。 

(2)PIXIAQIKONG:WEIYUZHUJIANBIAOPIXIADEFENSANXINGQIKONG。WEIJINSHUYEYUSHAXING(ZHUXING、SHIXIN、TULIAO、BIAOMIANBUGANJINGDELENGTIE)ZHIJIANFASHENGHUAXUEFANYINGCHANSHENGDEFANYINGXINGQIKONG。XINGZHUANGYOUZHENZHUANG、KEDOUZHUANG、QIUZHUANG、LIZHUANGDENG。DAXIAOBUYI,SHENDUBUDENG。TONGCHANGZAIJIXIEJIAGONGHUORECHULIHOUCAINENGFAXIAN。 

(3)QIWO(QIKENGSHIBIAOMIANQIKONG):ZHUJIANBIAOMIANAOJINQUYIKUAIJIAOPINGHUADEQIKONG。 

(4)QISUOKONG:FENSANXINGQIKONGYUSUOKONGHESUOSONGHEBINGERCHENGDEKONGDONGLEIZHUZAOQUEXIAN。 

江西11选5 (5)ZHENKONG:YIBANWEIZHENTOUDAXIAOFENBUZAIZHUJIANJIEMIANSHANGDEXICHUXINGQIKONG。LVHEJINZHUJIANZHONGCHANGCHUXIANZHEILEIQIKONG,DUIZHUJIANXINGNENGWEIHAIHENDA。 

① DIANZHUANGZHENKONG:CILEIZHENKONGZAIDIBEIXIANWEIZUZHIZHONGCHENGYUANDIANZHUANG,LUNKUOQINGXIQIEHUBUXIANGLIAN,NENGQINGDIANCHUMEIPINGFANGLIMIMIANJISHANGDEZHENKONGSHUMUBINGCEDEZHENKONGDEZHIJING。ZHEILEIZHENKONGRONGYIHESUOKONG、SUOSONGXIANGQUBIE。DIANZHUANGZHENKONGYOUZHUJIANNINGGUSHIXICHUDEQIPAOSUOXINGCHENG,DUOFASHENGYUJIEJINGWENDUFANWEIXIAO,BUSUONENGLILIANGHAODEZHUJIANZHONG,RUZL102HEJINZHUJIANZHONG。DANGNINGGUSUDUJIAOKUAISHI,LIGONGJINGCHENGFENJIAOYUANDEZL105HEJINZHUJIANZHONGYEHUICHUXIANDIANZHUANG ZHENKONG。 

② WANGZHUANGZHENKONG:CILEIZHENKONGZAIDIBEIXIANWEIZUZHIZHONGCHENGMIJIXIANGLIANCHENGWANGZHUANG,BANYOUSHAOLIANGJIAODADEKONGDONG,BUYIQINGDIANZHENKONGSHUMU,NANYICELIANGZHENKONGDEZHIJING,WANGWANGDAIYOUMOSHAO,SUCHENG“CANGYINGJIAO”。JIEJINGWENDUKUANDEHEJIN,ZHUJIANHUANMANNINGGUSHIXICHUDEQITIFENBUZAIJINGJIESHANGJIFADADEZHIJINGJIANXIZHONG,CISHIJIEJINGGUJIAYIXINGCHENG,BUSUOTONGDAOBEIDUSAI,BIANZAIJINGJIESHANGJIZHIJINGJIANXIZHONGXINGCHENGWANGZHUANGZHENKONG。 

江西11选5 ③ HUNHEXINGZHENKONG:CILEIZHENKONGDIANZHUANGZHENKONGHEWANGZHUANGZHENKONGHUNZAYIQI,CHANGJIANYUJIEGOUFUZA、BIHOUBUJUNYUNDEZHUJIANZHONG。

针孔可按国家标准分等级,等级越差,则铸件的力学性能越低,其抗蚀性能和表面质量越差。当达不到铸件技术条件所允许的针孔等级时,铸件将被报废,其中网状针孔割裂合金基体,危害性比点状针孔大。 

(6)BIAOMIANZHENKONG:CHENGQUNFENBUZAIZHUJIANBIAOCENGDEFENSANXINGQIKONG。QITEZHENGHEXINGCHENGYUANYINYUPIXIAQIKONGXIANGTONG,TONGCHANGBAOLUZAIZHUJIANBIAOMIAN,JIXIEJIAGONG1~2mmHOUJIKEQUDIAO。 

(7)QIANGHUO(QIANGKONG):JIAOZHUGUOCHENGZHONGCHANSHENGDEDALIANGQITIBUNENGSHUNLIPAICHU,ZAIJINSHUYENEIFASHENGFEITENG,DAOZHIZAIZHUJIANNEICHANSHENGDALIANGQIKONG,SHENZHICHUXIANZHUJIANBUWANZHENGDEQUEXIAN。

2、FENLEI 

(1)XICHUXINGQIKONG:ZHEILEIQIKONGJUNYUNFENBUZAINEIBUKAOJINJIAOKOUCHU、MAOKOUCHU、REJIEDENGWENDUJIAOGAODEQUYU,QIKONGXIXIAOERFENSAN,JINGCHANGTONGSUOKONGGONGCUN。 

XICHU:JILVYEZHONGHANQI,WEICHEDICHUJING,NINGGUGUOCHENGZHONGXICHU。 

(2)FANYINGXINGQIKONG:ZHEILEIQIKONGJUNYUNFENBUZAIXINGBIYUZHUJIANDEJIECHUMIANSHANG。QIKONGBIAOMIANGUANGHUA,CHENGYINBAISE(ZHUGANGJIAN)、JINSHUGUANGLIANGSEHUOANSE。 

江西11选5 FANYING:XING、XIN、LENGTIE、TULIAODENGHANYOUYULVYEFASHENGFANYINGERCHANSHENGQITIDEWUZHI。

(3)QINRUXINGQIKONG:ZHEILEIQIKONGFENBUZAIZHUJIANSHANGBU,KONGDAERGUANGHUA。 QINRU:XINGQIANGZHONGDEQITI,WEIJISHIPAICHUXINGWAI,ERQINRUDAOZHUJIANZHONG。 

3、XINGCHENGJILI 

江西11选5 DIYAZHUZAODEZHUXINGJIBENSHANGSHIMIFENGDE,JINSHUYECHONGXINGBIJIAOKUAI,QITILAIBUJIPAICHU,BAOZAIZHUJIANZHONGXINGCHENGQIKONGHUOZHENKONG。 

(1)JINSHUYEZHONGRONGJIEDEQITIXICHU——XICHUXINGQIKONG(ZHENKONG),JINSHURONGHUASHISUOHANYOUDEQITI,DANGYETAIJINSHULENGQUEHENINGGUSHI,YINQITIRONGJIEDUXIAJIANGXICHUQITI,LAIBUJIPAICHU,SHIZHUJIANCHANSHENGQIKONG。 

江西11选5 LVYEZHONGDEQITI,JIAZAHANLIANGGAO、JINGLIANXIAOGUOCHA、ZHUJIANNINGGUSUDUDI。

(2)SHIXIN、TULIAO、BIAOMIANBUGANJINGDELENGTIE,JIAOZHUSHOUREHOUCHANSHENGDEQITI——FANYINGXINGQIKONG(PIXIAQIKONG),XINGBIWUZHITONGYETAIJINSHUZHIJIANHUOZAIYETAIJINSHUNEIBUFASHENGHUAXUEFANYINGSUOCHANSHENGDEQIKONG。 

(3)型腔中的气体,未及时排出型外——侵入性气孔(单个大气孔),由于铸件工艺设计不合理,如铸型或型芯排气不畅,或者是由于操作不小心,如浇注时堵死气眼(浇注速度太快),型腔中的气体被憋在铸件中所引起。

江西11选5 4、FANGZHICUOSHI 

江西11选5 (1)YANGEZHIXINGRONGLIANCAOZUOGUICHENG,BIMIANJINSHUYEXIQI,BINGRENZHENCHUQI。

FANGZHIXICHUXINGQIKONG 

① JINSHUYUANCAILIAOJIHUILULIAOYINGGANZAO、WUXIUSHI、WUYOUWUDENG,SHIYONGQIANYAOYURE。 

② RONGLIANWENDUBUYIGUOGAO。JINSHUYERONGLIANWENDUYUEGAO,ZERONGJIEZAIQIZHONGDEQITILIANG(ZHUYAOSHIQINGQI)JIUYUEDUO。YINCI,YINGYANGEKONGZHIRONGLIANWENDU,DUIYOUSEHEJINYOUWEIRUCI。 

③ RENHEZHONGLEIDEJINSHUQIRONGLIANSHIJIANDOUYINGJINKENENGSUODUAN,YIFANGSHIJIANGUOZHANGDERONGLIANSHIYETAIJINSHUXIQILIANGZENGDA,MOUCHANGSHENGCHANLVTIEMENGHUANGTONGZHUJIAN,2.5hRONGQINGCHULU,JIAOZHUDEZHUJIANDEQIMIXINGJUNHEGE;DAN6hRONGQINGCHULUHOUJIAOZHUDEZHUJIAN,ZAIGONGYIBUBIANDEQIANTIXIAZHUJIANQUANBUYINQIMIXINGBUHEGEERBAOFEI。DANGHUIFURONGQINGSHIJIANHOUZHUJIANDEQIMIXINGQUANBUHEGE,ZHEICHONGFENSHUOMINGRONGLIANSHIJIANZHANGDUANDUIZHUJIANQIMIXINGDEYINGXIANG。

江西11选5 ④ HANLVDEHEJINYINGJINKENENGBUYONGGONGPINLURONGLIAN,YINWEIZHEIZHONGLUZIDEJIAOBANNENGLIJIQIANG,ERLVYUKONGQIJIECHUHENYIYANGHUACHENGAl2O3,BINGJINRUYETAIJINSHUZHONGCHENGWEIRONGZHA,YEWEIQITIDEXICHUTIGONGJIHUI。TONGSHIYERONGYIYUH2OFASHENGFANYING,SHIYETAIJINSHUXIRUQING。RUOSHIYONGDIANZUFANSHELU、YUANHONGWAIXIANJIARELU,SHENZHIYONGRANYOUHUOMEIQIDEFANSHELURONGLIANDOUKEYI。SHIJIANZHENGMING:YONGZHEIXIELUZIRONGLIANDELVHEJINHANQILIANG、ZAZHILIANGDOUJIAOSHAO。 

⑤ TOULIAOSHIYINGXIANTOURURONGDIANDIDELIAO,YICITOURURONGDIANGAODELIAO。ZHEIYANGHUISHIJINSHUXIQILIANGSHAO,QIYUANYINJIUZAIYULULIAOYUKONGQIJIECHUMIANJIHESHIJIANJUNJIANSHAO。 

⑥ YETAIJINSHUQUQIHOUYINGLIJIBAZHA,ERHOUJIAOZHU,BUKETINGLIUGUOJIU,YIFANGZAIXIQI。 

⑦ YONGLIULVYIWANHUOYAQIJINGLIANQUQIHUOZHENKONGQUQI。 

(2)JINLIANGJIANSHAOTULIAO、SHAXIN、JINSHUXING(XIN)DENGDEFAQILIANG。XUANZEZHILIANGHAODEFAQILIANGXIAODETULIAO,ZHUXINGHEXINGXINTULIAOHOUYAOCHONGFENHONGGAN。

FANGZHIFANYINGXINGQIKONG 

① TULIAODEZHONGLEIYINGXUANZEHESHI,TULIAODEFAQILIANGBUNENGGAO。TULIAOYEJUYOUYIDINGDEPAIQIXING。 

江西11选5 ② ZHUXINGYUXINGXINYINGXIANYURE,RANHOUZAIPENTUTULIAO,JIESHUHOUBIXUYAOHONGTOUFANGKESHIYONG。 

③ TULIAOPENTUHOUBUNENGMOGUANG。FANTULIAOTUOLUOCHU,YINGLIJIBUPEN。

江西11选5 ④ SHAXINBIXUCHEDIHONGGANCAINENGSHIYONG。 

江西11选5 ⑤ JINSHUXINGHELENGTIEBIAOMIANYINGPINGZHENGGUANGJIE,BINGJINGHONGGANHOUSHIYONG。 

(3)GAISHANZHUXINGHEXINGXINDEPAIQITIAOJIAN。KEGENJUZHUJIANDETEDIAN,ZONGHEKAOLVZHUJIANDECHONGXINGQINGKUANG,XUANZEHELIDEPAIQIWEIZHIJIBUTONGDEPAIQICUOSHI:PAIQICAO、PAIQIPIAN、PAIQIZHEN、PAIQISAI、PAIQIKONGDENGJINXINGPAIQI。 

江西11选5 (4)XUANZEHESHIDECHONGXINGSUDU,LIQIUJINSHUYEPINGWENCHONGXING,FANGZHIJUANRUQITI。JINSHUYESHANGSHENGSUDUYIBANKONGZHIZAI50mm/s。JIZHONGLIZHUZAOSUOJIANGDEHELIDEJIAOZHUGONGYI:JIAOZHUWENDU、MOJUWENDU、JIAOZHUSUDU、JIAOZHUSHIJIANDENG。

   上一篇:浅议铸造产品的气孔缺陷   

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