Xa usiva i-'check valve stellite', iinjineli ezininzi zicinga ngoko nangoko nge-cobalt alloy eqinileyo kakhulu, enganxibiyo eqhwatywa esitulweni okanye kwidiski. Akulunganga oko, kodwa kulapho ukwenziwa lula kakhulu kuqala. Ibali lokwenyani asiyonto nje; ngumtshato phakathi kwesiseko somzimba wevalve-kaninzi yikhabhoni okanye insimbi engenasici-kunye naloo maleko weStellite. Ndibone ukungaphumeleli okuninzi apho iphepha lenkcazo libukeka ligqibelele, kodwa isicelo sasiyintlekele kuba umntu waphatha i-hardfacing njengembumbulu yomlingo, ngoyaba i-substrate, inkqubo, kunye neyona ndawo yenkonzo. Makhe sithethe ngento eyenzekayo evenkileni nasebaleni.
Umtshato ongaqondwanga: I-Substrate kunye ne-Overlay
Awunakuvele udibanise iStellite kuyo nantoni na kwaye ulindele ukuba ibambe. Ukwandiswa kwe-thermal coefficients phakathi, yithi, umzimba oqhelekileyo weCF8M kunye ne-cobalt-based alloy yahlukile. Ukuba ukushisa kwangaphambili akulungile, okanye ukuba ukulandelelana kwe-welding kucinyiwe, ufumana iintanda. Hayi ngokukhawuleza, mhlawumbi, kodwa baya kusasaza phantsi kwebhayisekile eshushu. Ndikhumbula ibhetshi yeevalvu ezili-10 zokutshekisha kwisityalo sekhemikhali apho umxhasi wagxininisa kubunzima obukhulu. Ivenkile yenza uqweqwe olugqibeleleyo, amanani e-Rockwell C ayeyi-stellar, kodwa baphoswa linyathelo lokunciphisa uxinzelelo kumzimba we-316L. Kwiinyanga ezintandathu emva koko, saba neentanda zeenwele kwindawo echatshazelwe bubushushu, nto leyo eyakhokelela ekuvuzeni. I-Stellite yayilungile; ujongano aluphumelelanga.
Kulapho amava e-Foundry engenakuxoxisana. Inkampani efana neQingdao Qiangsenyuan Technology Co., Ltd. (QSY), kunye namashumi eminyaka ekubunjweni kweqokobhe kunye nokuphosa utyalo-mali, iyakuqonda oku ngaphakathi. Abenzi nje inxalenye ethile; baqwalasela umjikelo wobomi wonke ukusuka kwinqanaba lentsimbi etyhidiweyo. Xa uqala ngomzimba wevalve echanekileyo ukusuka kwiziko labo, ufumana ulwakhiwo olulawulwayo oluziinkozo kunye nengqibelelo yendalo. Eso sisiqingatha sedabi esiphumeleleyo phambi kokuba kuqale nawuphi na umba onzima. Umsebenzi wabo ngee-alloys ezikhethekileyo uthetha ukuba babambe incoko yesinyithi phakathi kwemathiriyeli.
Ukukhetha ibakala elifanelekileyo leStellite ngomnye umgibe. I-Stellite 6 ligorha lenjongo jikelele, lilungele ukukrazula kunye nomhlwa ophakathi. Kodwa ngenxa ye-cavitation enzima okanye inkonzo ye-asidi eshushu? Usenokuba ujonge iStellite 12 okanye enye esekwe nickel. Ndakhe ndaxambulisana nomphathi wokuthenga owayeneStellite kwi-PO kwaye wala ukucacisa ibakala. Sifumene i-Stellite 6, eye yakhukuliswa ngokukhawuleza kubushushu obuphezulu, i-particle-laden-laden slurry flow. Ivalve ijongiwe, kodwa ayizange ihlale. Inkcazo kufuneka ihambelane nenyani.
Umdaniso woMatshini: Ukuchaneka emva kweNyaniso
Nantsi inyani abanye abayilibalayo: ukusebenzisa iStellite sisakhono esinye; ukuwenza lelinye irhamncwa ngokupheleleyo. Loo nto itya izixhobo zokusika. Udinga ukuseta kwe-CNC engqongqo, amabakala achanekileyo e-carbide okanye i-CBN efakelwayo, kunye nokutya / isantya esidayiweyo ukunqanda umsebenzi wokuqinisa umphezulu ngakumbi. Ayingomsebenzi weworkshop eqhelekileyo. Injongo litywina eligqibeleleyo, elithetha ubuso bokukhwelana-makube khangela ivalve stellite isihlalo kunye nediski-idinga umphezulu ukugqiba ukuba ngokufuthi kummandla 16 Ra okanye ngcono.
Ndikhe ndandwendwela iivenkile apho i-post-weld machining ibiyinto ecingelwayo. Isiphumo? I-taper encinci, i-micro-chatter marks, okanye i-flatness engafanelekanga. Ivalve idlula uvavanyo lwebhentshi ngomoya, kodwa phantsi koxinzelelo lwenkqubo kunye nobushushu, iyalila. Indlela edityanisiweyo ye-QSY, apho umatshini we-CNC ungowona buchule uphambili ecaleni kokubunjwa kwabo, kwenza umahluko. Banokulawula yonke inkqubo ukusuka ekubumbeni ekrwada ukuya kumatshini ngokupheleleyo kunye necandelo elinobuso obunzima, ukuqinisekisa ukuba iindawo zedatum zomatshini ziyahambelana nejometri yolwaleka oludityanisiweyo. Oku kuqhubekeka kunciphisa ukunyamezelana okongezelekayo.
Kwaye makhe sithethe ngediski. Ngokufuthi, sisihlalo kuphela esinobuso obulukhuni. Kodwa ukuba i-disc i-316 ayinamabala, isihlalo se-Stellite siya kuyikhupha ngenyongo ekuhambeni kwexesha, ngakumbi kwizicelo zokujonga i-high-frequency check. Isicombululo? Ngamanye amaxesha i-Stellite pad kwi-disc nayo, okanye unyango olulukhuni olwahlukileyo. Yinkqubo. Ndiyifunde le ndlela kabuhlungu kumgca wokuphinda usetyenziswe kwicompressor. Isihlalo sasicocekile, kodwa icwecwe lalikhangeleka ngathi lihlaselwe yimbila. Amasuntswana entsimbi aye abangela isiphithiphithi ezantsi komlambo. A epheleleyo Ukwaleka kwe-stellite kuyo yomibini imiphezulu yokutywina yasonjululwa.
Iindlela zokungaphumeleli kunye nokuqwalaselwa kweNdawo
Akusoloko malunga nokunxiba. Ndiyibonile i-galvanic corrosion ibulala into elungileyo i-stellite faced khangela ivalve. Kwisicelo samanzi olwandle, i-Stellite ehloniphekileyo (i-cobalt-rich) kunye ne-less-noble stainless steel body yenza i-galvanic cell. Intsimbi ejikeleze i-weld junction idliwe, ijongela phantsi isigqubuthelo. Sifunda ntoni? I-gaskets yodwa, ukhuseleko lwe-cathodic, okanye ukhetho lwezinto eziphathekayo kufuneka luphendule yonke indawo ye-electrochemical. Umthengisi olungileyo kufuneka abuze le mibuzo, hayi nje ukuthatha iodolo.
Olunye ukusilela okuchuliweyo lukhukuliseko olunyukayo lwesihlalo. Kwivalve yokujonga i-swing, ukuhamba kunokujija kudonga lomzimba olujongene nesihlalo phambi kokuba idiski ivale. Ukuba loo ndawo yintsimbi yekhabhoni, iya konakala iminyaka, itshintsha i-flow dynamics kwaye ekugqibeleni ibangele isiphithiphithi esithintela ukutywinwa okucocekileyo. Ndizibonile izisombululo ze-retrofit apho umkhono wokunxiba we-Stellite wongezwa apho, i-nuance ezalwe ngokukrazulwa kwentsimi, hayi uyilo lweencwadi.
Emva koko kukho unyango lobushushu. Unyango lwe-post-weld heat heat (PWHT) luhlala lufuneka kumzimba oqulethe uxinzelelo, kodwa iimpawu ze-Stellite zinokwehliswa ukuba ubushushu buphezulu kakhulu. Kukuhamba ngentambo. Udinga inkqubo eyanelisa ikhowudi (njenge-ASME B16.34) kumzimba we-valve ngelixa ukhusela ingqibelelo ye-hardfacing. Oku kufuna iinkqubo ze-welding ezifanelekileyo (WPS/PQR) kunye nokuqonda okunzulu kokusebenzisana. Iivenkile zamayeza enziwe afana nalawo enziwe ngabenzi bawo azivumelani noku; Iingcali zibhaka kwinkqubo yazo.
INyaniso yoBonelelo: Ngubani omthembileyo?
Oku kusizisa ekufuneni. Imarike izele ziivalvu zetshekhi ezitshiphu ezibanga izihlalo zeStellite. Rhoqo, sisitshizi esibhityileyo-kunye-ne-fuse yokugquma, ayisiyonto edityanisiweyo efanelekileyo enobungqingqwa obaneleyo kubomi benkonzo kunye nokusetyenziswa kwakhona. Umahluko kwiindleko ubalulekile, kwaye kunjalo umahluko kubomi. Ngomgca wamanzi ongabalulekanga, mhlawumbi isambatho esincinci silungile. Ngomgca we-steam oyintloko okanye ukukhutshwa kwempompo ebalulekileyo? Kukungcakaza.
Ukusebenza nomvelisi olawula ukuphosa kunye nomatshini, njengeqela kwi Qingdao Qiangsenyuan Technology Co., Ltd., inikeza ukulandeleka. Ungaxoxa ngendlela yokuphosa (inkqubo yokubumba iqokobhe labo inika ukuchaneka okuhle komgangatho kumalungu antsonkothileyo), iicerts zemathiriyeli yesiseko sesinyithi, ibhetshi yentonga yewelding, kunye neelog zomatshini. Xa kuvela ingxaki, kukho uthotho lobungqina bokuyixilonga. Imbali yabo ende, ibonakala kwindawo yabo https://www.tsingtaocnc.com, ekuphatheni yonke into ukusuka kwintsimbi etyhidiweyo ukuya kwi-cobalt alloys icebisa ukuba babone oku kusebenzisana kwezinto ngaphambili.
Ndikhumbula ndiphicotha umboneleli-zincwadi owayefumana ikontraka engaphantsi kwayo yonke into: ekhupha kwi-Foundry A, i-welding esuka kwivenkile engu-B, i-machining evela kwivenkile C. Izikhewu zonxibelelwano zaziyintlekele. Umchwephesha wathabatha inxeba elinzima kakhulu esihlalweni, eqhekeza umaleko weStellite kwisiseko sesinyithi. Endaweni yokuyikrazula, baphinda bayakha, besenza ujongano olubuthathaka, oluneepasi ezininzi. Ayiphumelelanga kuvavanyo lwe-hydro. Umvelisi odibeneyo unciphisa le mingcipheko yokunikezelwa ngesandla. Isandla sasekhohlo siyayazi into eyenziwa sisandla sasekunene.
Ukuphetha Ngaphandle kweSaphetha: Imalunga neNkqubo
Ke, xa uchaza a khangela ivalve nge-stellite, awuyichazi imveliso. Uchaza inkqubo. Inkqubo eqonda i-metallurgy, i-thermal dynamics, ukuchaneka komatshini, kunye neendlela zelizwe lokwenyani. Itikiti lezinto eziphathekayo ngumgca wokuvula nje.
Isitshixo kukusebenzisana nabaqulunqi ababuza ukuba kutheni kwaye kuya kusetyenziswa njani, kungekhona nje into oyifunayo. Bafanele babuyisele umva kwiimfuno ezingachazwanga kakuhle. Ezona ziphumo zibalaseleyo ndizibonileyo zivela kubudlelwane bentsebenziswano apho idatha yokusebenza yabasebenzisi bokugqibela ikwazisa isicwangciso sokwakha somenzi. Ngaba ukungaphumeleli kwangaphambili ngenxa ye-cavitation okanye ukuguguleka kwamasuntswana aqinileyo? Isicwangciso sokulungisa sitshintsha ngokupheleleyo.
Ekugqibeleni, loo nto incinci ye-hardfacing yeyona intshi ibaluleke kakhulu kwi-valve yonke. Ukuyilungisa kukudibanisa isayensi, ubugcisa, kunye nezifundo ezifundiweyo-kaninzi ngendlela enzima. Asiyonto yorhwebo. Yiphathe njengenye, kwaye inkqubo iya kukukhumbuza, ngokuqhelekileyo ngexesha elibi kakhulu.
