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zhaiyao:yingyongxianzhuseshentoutanshanghouzaijinxingcifentanshangdeerdaojianyangongxudegongyifangfa,duichaiyoujiqifazuobiaomianjiancha,hubuledanducaiyongzhusetanshanghuocifentanshangdebuzu,quebaojiancezhiliangdekekaoxing。

關鍵詞柴油機氣閥表面探傷

1 氣閥失效的原因及表面檢查的必要性

chaiyoujiqifazaifuyiguochengzhong,huiyinshixiaoeryinqitingji,zaochengjingjisunshi。chaiyoujiqifashixiaozhuyaoyouyixiasanfangmiandeyuanyin:diyi,youyuqifabunengfuweierbeihuosaizhuangjipengduan;dier,fatiyuancailiaocaizhibuliang(rubiaomianliewen、jiazadeng),zhizaojiagongguochengzhongyinqidequexian(ruduanzaoliewen、jiagongdaohenyinqideyinglijizhongbingzaifuyizhongxingchengweiliewen);disan,fatishoudaogaowenqiliureyinglihefushiyinglideyingxiangchanshengweiliewen。

ziliaobiaoming,jin、paiqifapoliehuoshaosunyanzhongdui,cengfashengdiaoxiadeqifasuipiandahuaiqiganggairanshaomianhehuosaidingmiandexianxiang,youshijinrenpaiqiguanfashengdahuaiwolunzengyaqidengzhongdashigu,zhexieshigujiyingxianganquanyunxing,youzaochengjudadejingjisunshi。

jufenxi,liewenshiyoubianyuanxiangzhongxinfazhande,youyuqifamifengmianduihannaireyingzhihejin,zaicihuandaishangjinliechuxiafeng,guolecihuandaibianyinqifacailiaonairenenglidiyuduihancailiaoeryoujiaokuandeliewen,bingxiangzhongxinfazhan,liewenyuequxiazhai。dangliewenwanxiangbianyuanfangxiangfazhandui,bujiubiandiaoxiasuikuai。

weifangzhishigufasheng,bimianbubiyaodesunshi,yingzaimeicizhongxiu、daxiuqijian,duiqifajinxingquanmiandebiaomianjiancha,baokuohongguanjiancha、biaomiantanshangdeng。

muqiandebiaomiantanshang,yibancaiyongzhuseshentoutanshanghecifentanshang,zheliangzhongfangfayinbeitancejiandexingzhuangbutong,zaiyingyongzhonggeyoutedianhejuxianxing。yiqianduiqifadejianchazhicaiyongzhuseshentoutanshanghuojinzuobiaomianhongguanjiancha,danzheyangrongyizaochengloujian。weizhunquedijianchuqifadebiaomianquexian,bizhechangshiyongzhuseshentoutanshanghecifentanshangxiangjiehedegongyijianceqifaqudelianghaodexiaoguo。

2 檢測工藝

zhuseshentoutanshangyibanxuanyongbianxieshiyaliguantanshangji,cifentanshangyibanxuanyongbianxieshiciecifentanshangji。kaolvdaocifentanshangxushiyongcixuanye,qingxikunzhun,suoyizaiduiqifajinxingbiaomianjianceshi,xiananpaizuozhusetanshang,ranhoucaizuocifentanshang。

2.1 著色滲透探傷

caiyongrongjixingqingxizhusetanshangji,yibanbuzoushi:yuqingxi→shentou→rongjiqingxi→xianxiang→guancha。jiancebuweidebiaomianzhuangkuangzaihendachengdushangyingxiangzhuseshentoutanshangdezhiliang,yinciyuqingxishiyingtebiezhuyibixuchediqingchufangaishentoujishenrudeyouzhi、jitan、yanghuapidengfuzhuwu。fuzhuwuyijicanliuzaiquexianzhongdeyouzhijishuifen,keyonghuaxuefangfajiangqifajinpaochuli。quchuwuranwuhou,yongqingxijiduifatijinxingqingxi,daiganzaohoupentushentoujibingbaochishirunzhuangtai 15~30 min,shidukongzhizai 15~50℃。shentouhouyongganbuhuoweishengzhicashiduoyushentouji,ranhouzaiyongzhanyouqingxijidebukuaihuoweishengzhixiangyigefangxiangcaxi,bunengyongqingxijipenguanduibiaomianzhijiepensaqingxi。cashishijinyongmianshatou,yinqixisisuipianrongyiliuzaibiaomianshang,buyichuqu,xianxiangshixingchengweixianshi,yingxiangjiancexiaoguo。

rongjixingzhusetanshangdexianshijiweikuaiganshixianxiangji。pentuqian,xianxiangjipenguanyaochongfenyaodong,jiangxianxiangjijunyunpenyubeijianbiaomian。pentushijulikongzhizai 300~400 mm,penguanqingjiaoyubeijianbiaomiancheng 30~40° weiyi,caiyongsaomiaofangshi,pentuyaoyunerbo,yiganghaogaizhushoujianquweiyi。zaipentuxianxiangji 7 min houjinxingguancha,youquexiandedifangkexianshihongsehenji,zheshiyouyumaoxiguanzuoyongyuanli,baisexianxiangjijiangqifabiaomiankaikouquexianshenrudehongseshentoujixifushanglai,xianshiquexiandezhenshixingzhuanglunlanghenji。

2.2 磁粉探傷

jingzhuseshentoutanshangdeqifa,yongbucashiganjinghou,jikeyongbianxieshicifentanshangjiduiqifabiaomianjinxingcihua。weibaozhengcifentanshangdelingmindu,yibanxuanyong a30/100 xingshipian,shipianfangzhizaijiancefanweineidebianyuan,kecaomianchaobeijianbiaomian,geyidingjulifangzhiyishipian。weishishipianyubeijianbiaomianjiechulianghao,keyongtoumingjiaodaijiangqipingzhengzhantiezaibeijianjianbiaomianshang,bingzhuyijiaodaibunengfugaishipianshangderengongquexian。cihuashiyaozhuyiciexingzoudefangxianghejiaocixuanyedeweizhi,meiyibeijianquyuzhishaoyingjinxingliangcidulidejiance,zheliangcijiancedecilixianfangxiangyingdazhixianghuchuizhi,cihuaqumeiciyingyou 15mm dezhongdie,yibiannengfaxianzongxianghehengxiang(zhouxiang)debiaomianjijinbiaomianquexian,bingfangzhiloujian,tigaoquexianjianchulv。

3 結束語

zhuseshentoutanshangjuyoucaozuojianbian、quexianxianshizhiguan、biaomiankaikouquexianjianchulingmindengyoudian,danduizaiyouxing、shuiqijiaodadehuanjingzhongyunxingdelingbujian,ruobiaomianyouzhi、jitandengfuzhuwuqingxibuchedi,zehuiyingxiangjiancexiaoguo;cifentanshangjuyouchengbendi、jiancesudukuaideyoudian,erqieduijinbiaomianquexianyenengqingxixianshichulai,dantayoushoudaobeijianjiandechicunhexingzhuangfuzachengdushangdexianzhi。yinci,yongxianzhuseshentoutanshanghouzaijinxingcifentanshangliangdaojiancegongxudegongyifangfa,duichaiyoujiqifazuobiaomianjiancha,hubuledanducaiyongzhusetanshanghuocitanfangfadebuzu,quebaojiancezhiliangdekekaoxing。zhezhongfangfatuxiangxianshiqingxizhiguan,baoliuxinghao,lingmindugao,bushoubeijianjiandexingzhuangxianzhi,qieshiyonglinghuojianbian。bizhechulecaiyongcifangfaduifamenchangjiadechaiyoujiqifajinxingtanshangwai,huanbacifangfayingyongdaofamenchangfadianjizuqigangneibiaomian、famenchangdianzhandaozhouchengzhouwakangdingkuaidengbujiandebiaomianjiancha,junqudelelianghaodexiaoguo。


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