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钛标准件的腐蚀性能分析

发布时间:2020-12-01 06:07:00 浏览次数 :

钛标准件是一种量大面广的通用基础件,包括螺栓、螺钉、螺柱、螺母、自攻螺钉、木螺钉、垫圈、挡圈、销、铆钉、连接副和组合件及其他12大类,广泛用于通用机械、工程机械及国防工业等领域。标准件的品质和可靠性对主机的工作性能和结构安全性起着重要作用,一些重要的连接,可能因为这种失效酿成重大事故。

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MOUXIEFANGSHICUOSHIYEHUIYINGXIANGLINGJIANDEXINGNENG,LIRU,CHANGYONGDEDIANDUBIAOZHUNJIANKENENGCHUXIANQINGCUI;JIAOHOUDEBIAOMIANTUDUCENGJIANGYINGXIANGLUOWENDEXUANHEXING,YEYOUKENENGYINGXIANGLIANJIEQIANGDU。

TAIJITAIHEJINJUYOUGAOBIQIANGDU、YOULIANGDENAIFUSHIXING、LIANGHAODENAIGAOWENXINGNENGDENG,ZAIHANGKONG、HANGTIAN、CHUANBO、DIMIANWUQIZHUANGBEIDENGGUOFANGGONGYEZHONGDEDAOLEGUANGFANYINGYONG。TAIHEJINBIAOZHUNJIANLIANJIEJIANSHIFEIJIJIDIMIANWUQIZHUANGBEISHANGDEDIANXINGJIEGOUJIAN,QISHIXIAOPOHUAIBAOKUOBIAOZHUNJIANZISHENDEPILAO、LIANJIEBANCAIJINGUKONGCHUDEPILAOJIFUSHIPILAODENG。YIBANQINGKUANGXIATAIJITAIHEJINBIAOMIANKESHENGCHENGYICENGZHIMIDEYANGHUAMO,QIDAOFANGFUSHIDEZUOYONG,DANSHIZAIELIEDEHUANJINGZHONGHUOZHEYANGHUAMOPOLIEYIJIFASHENGFENGXIFUSHIDEQINGKUANGXIA,TAIHEJINDENAIFUSHIXINGNENGJIANGDADAJIANGDI。ZAIHAIYANGHUOCHAOSHIHUANJINGZHONG,BIAOZHUNJIANCAILIAODOUCUNZAIBUKEYUJIANDEFUSHIXINGHEYOUCIDAILAIDEGUZHANGFENGXIAN,DANGTAIHEJINYUJIEGOUGANG、LVHEJINDENGYIZHONGJINSHUJIECHUSHI,YOUYUDIANOUFUSHI,CHANGCHANGHUIJIASUQITAJINSHUJIQIZISHENDEFUSHI,ZAOCHENGBIAOZHUNJIANJIJINGUKONGZHOUWEICHANSHENGPOLIE。YINCI,BIXUCAIQUHESHIDEFANGHUCUOSHIYIBAOZHENGQIHUANJINGNAIJIUXINGMANZUZAISHIJIYINGYONGZHONGYOUQISHIGUOFANGGONGYEZHONGDEANQUANXINGYAOQIU。BENGONGZUOZHIZAITANTAOTAIHEJINBIAOZHUNJIANDEFUSHIJIQIKONGZHIJISHU。

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钛合金结构件的腐蚀分析

1、腐蚀性能

YOUYUBIAOZHUNJIANANZHUANGSHIZIRANXINGCHENGJIANXI,NEIXIEYISHOUYINGXIANGDEJINSHUCAILIAOCHANGHUIZAIJINSHUYUJINSHUJIANHUOJINSHUCHENDIANJIAN,HUOZAIBIAOMIANTUCENGLIEWENXIAFASHENGFENGXIFUSHI。TAIHEJINJUYOULIANGHAODEKANGFUSHIXING,SHIHAIYANGHUANJINGZHONGCHANGYONGDEBIAOZHUNJIANCAILIAO,BENSHENBUSHOUTIANRANSHUI、HAIYANGHUANJINGJI80℃YIXIAHAISHUIDEFUSHIYINGXIANG。TAIJUYOULIANGHAODEKANGFUSHIXINGSHIYINWEIQIBIAOMIANJINMIFUZHELEYICENGFANGHUXINGYANGHUAMO,MOYIDANSHOUSUN,ZAIYOUYANGDEQINGKUANGXIA,KESHUNSHIZIDONGXIUBU。DANSHIJISHIYONGZHONG,DANGHUANJINGTIAOJIANGAIBIANSHI(RUWENDUDESHENGGAO、MOUZHONGJIEZHINONGDUDEZENGJIAJIFASHENGLEYUQITAYIFUSHIJINSHUDEJIECHUDENG),FUSHIJIUKENENGFASHENG。ZAITUCENGXIA,YOUYUTUCENGPOLIEHUOSHIXIAO,KENENGHUIFASHENGDIANSHI。DUIYUBIAOMIANYOUDUNHUAMODETAIHEJINERYAN,ZAIJINGZHIHUODILIUSUDEHAISHUIZHONGYOUYUYANGDEGONGYINGBUZU,TAIHEJINBIAOMIANDUNHUAMODEZUOYONGJIANGDI,ZHEISHIDIANSHIYEKENENGFASHENG。TAIBIAOZHUNJIANDUICHUNDEFEIYANGHUASUAN(RUYANSUAN、XILIUSUANDENG)、QINGFUSUAN、GAOWENDEXILINSUANHESHIWENNONGLINSUANYEBUNAISHI。

TAIHEJINBIAOZHUNJIANTONGQITAYIDUNHUAJINSHUYIYANG,YICHANSHENGFENGXIFUSHI、QINGCUI,ZHISHIFENGXIFUSHITONGCHANGFASHENGZAIGAOWENHANLUSULIZIDERONGYEZHONG。TAIHEJINBIAOZHUNJIANYUGENGDUOXINGDEJINSHUJIEHEZAIYIQISHI,HUISHOUDAODIANOUFUSHI,ERYINGXIANGJIAODADESHIXISHENGYANGJIHUOYINJIBAOHUDEXIQINGYINQIDECUIXINGJINGJIANDUANLIEFUSHI。

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2、几种可能产生的腐蚀情形

2.1 YINGLIFUSHIDUANLIE(SCC)

YINGLIFUSHIDUANLIESHIBIAOZHUNJIANJISHURENYUANZUIWEIGUANXINDEWENTIZHIYI。BUTONGDETAIHEJINCAILIAODUIYINGLIFUSHIDEMINGANXINGBUYIYANG,RUZAISHIWENHAISHUIHUANJINGZHONGTi-511lJIHUBUSHOUSCCYINGXIANG,ERZAIHAISHUIZHONGTi-6Al-4VDEDUANLIERENXINGQUEHUIJIANGDI,YOUQIDANGCAIYONGGAICAILIAODETAIBIAOZHUNJIANCHUZAIHAISHUIZHONG,ZAIJIASHANGCHIXULASHENLIDEZUOYONGSHI,YINGLIFUSHIDUANLIEJIUHUICHANSHENG。

2.2 QINGCUIDUANLIE

HAISHUIFUSHIHUOHAIYANGYINJIBAOHUXITONGCHANSHENGDEQINGKESHIBIAOZHUNJIANYOUYUQINGCUIERDUANLIE。TAIHEJINSUIRANSHIYINGPUTONGHAIYANGTIAOJIAN,DANGQIYUHUOXINGJINSHUJIEHEHOUBIAOMIANHUICHANSHENGQING,ZAIWENDUWEI80℃YIXIA,QINGBUHUIKUOSANDAOTAIJINSHUNEIBU,ERDANGWENDUZAI80℃YISHANGSHI,QINGCUIJIUKENENGCHANSHENG。

2.3 DIANOUFUSHI

TAIHEJINKEANQUANDIYUNAISHIJINSHULIANJIE,RUDUOXINGBUXIUGANGHESHIMOZENGQIANGDEFUHECAILIAODENG。DANYINGYONGZAILVGOUJIANZHONGSHI,ZEWANGWANGSHITAIBIAOZHUNJIANZHOUWEIDEJUBUFUSHIYINQIDUANLIE。XUANZEHESHIDECAILIAOKEYIBIMIANDIANOUFUSHI,RUNAIMODELUOWENTUCENGYIBANSHIFEIDAODIANDE,TONGGUOJIANSHAOTAIBIAOZHUNJIANMIANJIYOUXIAOJIANGDIDONGDIANDIANLIU,SHIJIXIANZHILETAIHEJINBIAOZHUNJIANDEDIANOUFUSHI。

2.4 FENGXIFUSHI

TAIHEJINBIAOZHUNJIANDEFENGXIFUSHICHANGCHANGSHIYOUJIHEYUANYIN、CAILIAOYUANYIN、HUANJINGYUANYINYINQI。YOUYUTAIHEJINBIAOZHUNJIANZISHENJUYOUDEJIHEXINGZHUANG,ZAIBIAOZHUNJIANYULUOSHUAN、LUOMUZHIJIANZIRANXINGCHENGLEYIDINGDEFENGXI。TAIHEJINBIAOZHUNJIANZISHENCAIZHIZHUANGTAI、HEJINYUANSUZHONGLEIYUHANLIANG、BIAOMIANGUANGJIEDUDENGYINSUDOUHUIYINGXIANGDAOTAIHEJINCAILIAOFASHENGFENGXIFUSHIDEXINGWEIHEGUOCHENG。TAIHEJINFENGXIFUSHIZAIYIXIEHUANJINGYINSURUTEDINGDEJIEZHIHEWENDUDENGHUANJINGZHONGDOUKENENGCHANSHENG,RUZAIHANLVLIZIRONGYEZHONGZUIYIFASHENG。ZAIWENDUDIYU85℃DEHUANJINGZHONG,ZAISHIYANSHIJIEDUANWEIFAXIANTAIHEJINDEFENGXIFUSHI,DANFENGNEIDEDIANWEITONGBUJIANCESHIYANXIANSHI,SUIZHEWENDUSHENGGAO,FASHENGFENGXIFUSHISHIDEFENGNEIDIANWEIYEBIANFU,SHUOMINGFENGXIFUSHIDEQUDONGLIZAIZENGJIA。

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