Mukamva 'check valve stellite', mainjiniya ambiri nthawi yomweyo amaganiza za cobalt alloy yolimba kwambiri, yosamva kugwedezeka pampando kapena disc. Kumeneko sikulakwa, koma ndipamene kuphweka kumayambira. Nkhani yeniyeni si nkhani chabe; Ndi ukwati wapakati pa valavu yoyambira - nthawi zambiri ndi mpweya kapena zitsulo zosapanga dzimbiri - ndi wosanjikiza wa Stellite. Ndawona zolephera zambiri pomwe pepala lodziwika bwino limawoneka bwino, koma kugwiritsa ntchito kunali kowopsa chifukwa wina adatenga hardfacing ngati chipolopolo chamatsenga, kunyalanyaza gawo lapansi, njirayo, komanso malo omwe amagwirira ntchito. Tiyeni tikambirane zomwe zimachitika m'sitolo ndi m'munda.
Ukwati Wosamvetsetseka: Substrate ndi Overlay
Simungangowotchera Stellite pachilichonse ndikuyembekeza kuti agwira. Ma coefficients owonjezera kutentha pakati, titi, thupi lokhazikika la CF8M ndi aloyi yochokera ku cobalt ndizosiyana. Ngati kutentha kusanayambe sikuli bwino, kapena ngati ndondomeko yowotcherera yazimitsidwa, mumapeza ming'alu. Osati nthawi yomweyo, mwina, koma iwo adzafalikira pansi pa matenthedwe apanjinga. Ndimakumbukira gulu la ma valve 10 opangira mankhwala omwe kasitomala amaumirira kuuma kwakukulu. Sitoloyo idaphimba bwino, manambala a Rockwell C anali nyenyezi, koma adaphonya gawo lothandizira pathupi la 316L. Miyezi isanu ndi umodzi, tidakhala ndi ming'alu ya tsitsi m'malo omwe adakhudzidwa ndi kutentha, zomwe zidapangitsa kuti titayike. The Stellite anali bwino; mawonekedwe analephera.
Apa ndipamene zinachitikira foundry sizingakambirane. Kampani ngati Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), ndi zaka makumi ambiri mu nkhungu ya chipolopolo ndi kupanga ndalama, imamvetsetsa izi. Iwo sali kungokonza gawo; akulingalira za moyo wonse kuchokera pa siteji yachitsulo chosungunuka. Mukayamba ndi thupi la valve yolondola kuchokera kumalo awo, mumapeza kamangidwe kake koyendetsedwa ndi umphumphu wachibadwa. Ndilo theka la nkhondo yomwe idapambana isanayambike. Ntchito yawo ndi ma aloyi apadera amatanthawuza kuti amamvetsetsa zokambirana zazitsulo pakati pa zipangizo.
Kusankha kalasi yoyenera ya Stellite ndi msampha wina. Stellite 6 ndiye wankhondo wanthawi zonse, wabwino pakuwononga komanso kudzimbira pang'ono. Koma kwa cavitation kwambiri kapena ntchito yotentha ya asidi? Mutha kuyang'ana Stellite 12 kapena njira ina yopangira faifi tambala. Nthawi ina ndinakangana ndi manejala wogula zinthu yemwe anali ndi Stellite pa PO ndipo anakana kufotokoza kalasi. Tili ndi Stellite 6, yomwe idakokoloka mwachangu pakutentha kwambiri, kutuluka kwa tinthu tating'onoting'ono. Valovu idayang'ana, koma sinakhalitse. Zolembazo ziyenera kufanana ndi zenizeni.
Kuvina kwa Machining: Kulondola Pambuyo pa Chowonadi
Nachi chowonadi ena amaiwala: kugwiritsa ntchito Stellite ndi luso limodzi; kuchichinga ndi chilombo china kwathunthu. Zinthu zimenezo zimadya zida zodulira. Mufunika makhazikitsidwe okhwima a CNC, magiredi olondola a carbide kapena ma CBN oyika, ndi ma feed/kuthamanga koyimbidwa kuti mupewe kugwira ntchito mowumitsa pamwamba. Si ntchito ya msonkhano wamba. Cholinga ndi chisindikizo changwiro, kutanthauza kuti nkhope zokwerera - zikhale fufuzani valve stellite mpando ndi chimbale-amafunika pamwamba pamwamba kuti nthawi zambiri mu dera la 16 Ra kapena bwino.
Ndayendera mashopu omwe makina a post-weld anali ataganiziridwanso. Chotsatira? Pang'ono pokha, macheza ang'onoang'ono, kapena kutsetsereka kosayenera. Valavu imayesa mayeso a benchi ndi mpweya, koma pansi pa kupanikizika kwa dongosolo ndi kutentha, imalira. Njira yophatikizika ya QSY, pomwe makina a CNC ndi luso lofunikira limodzi ndi kupanga kwawo, kumapangitsa kusiyana. Atha kuwongolera njira yonse kuyambira pakuponyera kosaphika mpaka pagawo lopangidwa ndi makina olimba komanso lolimba, kuwonetsetsa kuti ma data opangira makinawo akugwirizana ndi geometry yowotcherera. Kupitilira uku kumachepetsa kulolerana kochulukirachulukira.
Ndipo tiyeni tikambirane za chimbale. Nthawi zambiri, mpando wokha ndi wouma. Koma ngati chimbale ndi 316 zosapanga dzimbiri, mpando Stellite adzakhala ndulu m'kupita kwa nthawi, makamaka mkulu-pafupipafupi cheke ntchito. Njira yothetsera vutoli? Nthawi zina Stellite pad pa chimbale nayenso, kapena osiyana kuumitsa mankhwala. Ndi dongosolo. Ndinaphunzira izi movutikira pamzere wobwezeretsanso kompresa. Mpandowo unali wabwinobwino, koma chimbalecho chinkawoneka ngati chawukiridwa ndi mbira. Kenako tinthu ting'onoting'ono tachitsulo tinayambitsa chipwirikiti kunsi kwa mtsinje. A wodzaza zokutira za stellate pa malo onse osindikizira anathetsa.
Njira Zolephera ndi Zowonera M'munda
Si nthawi zonse za kuvala. Ndawona dzimbiri la galvanic likupha zabwino kwambiri wankhope zolimba chekeni valavu. Pogwiritsira ntchito madzi a m'nyanja, Stellite wolemekezeka (wolemera kwambiri wa cobalt) ndi thupi lopanda chitsulo chosapanga dzimbiri limapanga selo la galvanic. Chitsulo chozungulira polumikizira chowotchereracho chinachita dzimbiri, kufooketsa pamwamba pake. Kodi tikuphunzirapo chiyani? Ma gaskets odzipatula, chitetezo cha cathodic, kapena kusankha zinthu ziyenera kuwerengera chilengedwe chonse cha electrochemical. Wopereka wabwino ayenera kufunsa mafunso awa, osati kungotenga oda.
Kulephera kwina kosawoneka bwino ndiko kukokoloka kumtunda kwa mpando. Mu valavu yoyang'ana, kutuluka kumatha kusokoneza khoma la thupi moyang'anizana ndi mpando diski isanatseke. Ngati malowa ndi chitsulo cha carbon, chidzakokoloka kwa zaka zambiri, kusintha kayendedwe ka kayendedwe kake ndipo pamapeto pake kumayambitsa chipwirikiti chomwe chimalepheretsa kusindikiza koyera. Ndawonapo mayankho a retrofit pomwe chovala cha Stellite chidawonjezedwa pamenepo, nuance yobadwa kuchokera pakugwetsa m'munda, osati zolemba zamabuku.
Ndiye pali kutentha mankhwala. Pambuyo pa weld heat treatment (PWHT) nthawi zambiri imafunika pa thupi lokhala ndi mphamvu, koma katundu wa Stellite akhoza kuchepetsedwa ngati kutentha kuli kwakukulu. Ndi kuyenda kwa zingwe zolimba. Mukufunikira ndondomeko yomwe imakwaniritsa kachidindo (monga ASME B16.34) kwa thupi la valve pamene mukuteteza kukhulupirika kwa hardfacing. Izi zimafuna njira zowotcherera zoyenerera (WPS/PQR) komanso kumvetsetsa mwakuya kwa kuyanjana. Mashopu amtundu uliwonse amadana ndi izi; akatswiri amaphika mu ndondomeko yawo.
The Supply Chain Reality: Kodi Mumakhulupirira Ndani?
Izi zikutifikitsa ku sourcing. Msikawu wadzaza ndi ma valve otsika mtengo otengera mipando ya Stellite. Nthawi zambiri, ndi zokutira zopyapyala zopopera-ndi-fuse, osati zokutira zowotcherera zokhala ndi makulidwe okwanira kuti zigwiritsidwe ntchito ndikusinthanso. Kusiyana kwa mtengo ndi kwakukulu, komanso kusiyana kwa moyo. Kwa mzere wamadzi wosafunikira, mwina zokutira zoonda ndizabwino. Kwa chingwe chachikulu cha nthunzi kapena potulutsa pampu yovuta kwambiri? Ndi juga.
Kugwira ntchito ndi wopanga yemwe amawongolera kutulutsa kwake ndi makina ake, monga gulu Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd., imapereka traceability. Mutha kukambirana za njira yoponyera (njira yawo yopangira chipolopolo imapereka kulondola kwapang'onopang'ono kwa magawo ovuta), ma cert azinthu zachitsulo choyambira, ndodo yowotcherera, ndi zipika zamachining. Vuto likabuka, pali umboni wokwanira woti muwazindikire. Mbiri yawo yayitali, yowonekera patsamba lawo pa https://www.tsingtaocnc.com, pogwira chilichonse kuyambira chitsulo chopangidwa ndi cobalt aloyi akuwonetsa kuti adawonapo kale kuyanjana kwazinthu izi.
Ndikukumbukira ndikuchita kafukufuku kwa wogulitsa katundu yemwe adapanga chilichonse: kuponya kuchokera ku foundry A, kuwotcherera kuchokera ku shopu B, makina opangira makina a shopu C. Mipata yolumikizirana inali yowopsa. Wopanga makinawo adadula kwambiri pampandowo, ndikuphwanya gawo la Stellite muzitsulo zoyambira. M'malo mochichotsa, adachimanganso, ndikupanga mawonekedwe ofooka, odutsa ambiri. Zinalephera mu hydro-test. Wopanga wophatikizika amachepetsa zoopsa zapamanja izi. Dzanja lamanzere limadziwa zomwe dzanja lamanja likuchita.
Kumaliza Popanda Uta: Ndizokhudza Njirayi
Choncho, pamene inu mwachindunji a fufuzani valavu ndi stellite, simukutchula chinthu. Mukufotokoza ndondomeko. Njira yomwe imamvetsetsa zitsulo, mphamvu zamagetsi, makina olondola, ndi njira zenizeni zolephera. Tikiti yazinthu ndi mzere wotsegulira.
Chinsinsi ndicho kugwirizana ndi opanga opanga omwe amafunsa chifukwa chake ndi momwe zidzagwiritsire ntchito, osati zomwe mukufuna. Ayenera kukankhira kumbuyo pazofunikira zomwe sizinatchulidwe. Zotsatira zabwino kwambiri zomwe ndaziwona zimachokera ku maubwenzi ogwirizana komwe deta yogwiritsira ntchito mapeto imadziwitsa wopanga njira yomanga. Kodi yapita kulephera chifukwa cavitation kapena olimba tinthu kukokoloka? Njira yokonza imasintha kwathunthu.
Pamapeto pake, kachidutswa kakang'ono kameneka ndi inchi yovuta kwambiri mu valve yonse. Kuwongolera ndi kuphatikiza kwa sayansi, luso, ndi maphunziro ophunziridwa - nthawi zambiri zimakhala zovuta. Si katundu. Chitani ngati chimodzi, ndipo dongosololo lidzakukumbutsani, nthawi zambiri panthawi yoyipa kwambiri.
