Xa uninzi lwabantu kwimveliso besiva 'isiseko se-cobalt', bacinga kwangoko 'iinjini zejethi' okanye 'ubushushu obugqithisileyo' kwaye bame apho. Yimpazamo yokuqala leyo. Ifaka iibhokisi izinto kwi-niche, ikwenza ukuba ungahoyi yokwenyani, into eluncedo kwiindawo ongazilindelanga. Ndibone iiprojekthi ezininzi kakhulu ezingagqibekanga kwi-nickel alloy kuba yindlela yokuya kwi-corrosion, kuphela ukusilela phantsi kokunxiba okudityanisiweyo kunye nobushushu apho kukho into ethile. isiseko se-cobalt ibakala ngethe cwaka waphumelela. Eli gama ngokwalo lifana negama elingelilo—ayisokuze ibe yicobalt esulungekileyo; kusoloko kuyinkqubo entsonkothileyo, isenzo sokulinganisa phakathi kweekhabhidi zokuxhathisa ukunxiba kunye neso sisombululo sematrix sokuqina. Ukufumana ibhalansi engalunganga kuyabiza, kwaye ndineendawo ezilahliweyo zokungqina oko.
Inyani yokuchaza i-Cobalt Alloys
Awukhethi nje i-cobalt alloy. Ukhetha umlo ngokuchasene neseti yeemeko ezithile. Ngaba i-sulfid? Ngaba iyakrala kwivalve yoxinzelelo oluphezulu? Ingaba yimpompo yempompo ebona ukhukuliseko oluludaka kuma-400°C? Imowudi yokusilela nganye ikhomba kusapho olwahlukileyo. I-Stellite 6, yokunxiba. I-Haynes 25 (L605) yaloo mxube we-oxidation kunye namandla. I-MP35N xa ufuna amandla aphambeneyo kunye nokumelana nomhlwa kunye, nangona sisilo se-cobalt-nickel-chrome-moly. Amaphepha edatha akunika iipropati, kodwa akakuxeleli malunga nokukhala kwesixhobo sokwenza i-Stellite 12, okanye ukuba uxinzelelo olushiyekileyo kwi-welded overlay inokuqhekeka njani ukuba awuyilawuli i-interpass ngononophelo. Apha kulapho iminyaka engamashumi amathathu yokusetyenzwa kunye nokuziqhelanisa noomatshini, njengale nto ungayifumana kwingcali efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), iba yinto engenakuxoxisana. Baye kule ukususela 90s, kwaye ukuba inkumbulo yeziko ngendlela ezi alloys baziphatha ngayo ukusuka isinyithi esinyibilikisiweyo ukuya icandelo eligqityiweyo yintoni eyahlula inxalenye esebenzayo uxanduva.
Ndikhumbula iprojekthi yesitrim sevalve yokunyibilikisa amalahle. I-spec ibize i-cobalt-based alloy yokunxiba okuphezulu. Sahamba neStellite esikumgangatho ophezulu wekhabhoni. Yaqhuba kakubi, yathatha iiveki kuphela. Ukuhlolwa kwesidumbu kwabonisa ukuba yayingengombhobho ococekileyo; yayiyindibaniselwano ye-corrosion eshushu evela kwiikhompawundi zesulfure kunye ne-micro-fretting. Ubunzima babukho, kodwa ukuxhathisa komhlwa kwelo bakala kwakungalunganga. Sitshintshele kwi-carbon esezantsi, ephezulu-molybdenum isiseko se-cobalt Ukwahluka kunye nokuxhathisa okungcono kubushushu bomhlwa. Umahluko wawubusuku nemini. Sifunda ntoni? Utshaba alufane lube yinto enye. Ufuna iqabane eliqondayo i-metallurgy, kungekhona nje umatshini.
Yiyo loo nto ikhonkco lenkqubo libalulekile. Ngezi ngxubevange, amanyathelo akho okuvelisa athetha omnye komnye. Izinga lokupholisa ngexesha utyalo mali kwi-Foundry efana ne-QSY ichaphazela ngokuthe ngqo ubungakanani be-carbide kunye nokusabalalisa. Ngokukhawuleza kakhulu, kwaye unokufumana ii-carbides ezintle kodwa kunye nokuqhekeka. Ukucotha kakhulu, kwaye i-carbides inokuba rhabaxa kakhulu, yenzakalise ukuxhathisa kwempembelelo. Emva koko unikezela kwivenkile ye-CNC. Ukuba bayiphatha njengentsimbi yomatshini, baya kutshisa ngokufaka kwaye babangele umonakalo ongaphantsi komhlaba. Udinga iiparameters eziphendula ukuqina komsebenzi kunye ne-conductivity ephantsi ye-thermal. Yinkqubo enye eqhubekayo, enolwazi ukusuka ekugaleleni ukuya kwinxalenye.
Machining: Apho ithiyori idibana neSixhobo
Esi sisihluzo esikhulu. Unokuba nomfanekiso oyilwe ngokugqibeleleyo, owenziwe kakuhle isiseko se-cobalt icandelo, kwaye uyonakalisa kwilathe okanye ilitye lokusila. Umgaqo wokuqala: hlonipha umsebenzi onzima. Ezi ngxubevange, ngakumbi ezona ziqilima-isisombululo esomeleziweyo njengeHaynes 188, ziya kuba lukhuni phantsi kwempumlo yesixhobo ukuba unobulali kakhulu. Kufuneka ugcine ukondla okungaguquguqukiyo, okulungileyo ngendlela ebukhali, ezinikeleyo. Ukukrola ngaphakathi nangaphandle? Leyo yiresiphi yomphezulu omenyezelayo, oqinileyo oya kuqhekeza isixhobo sakho esilandelayo sokudlula.
Isixhobo sejometri yinto yonke. Iharika enkulu evumayo yokucheba imathiriyeli, hayi ukuyityhala. Isipholisi esinoxinzelelo oluphezulu asiyonto yobumnandi; kuyimfuno yokulawula ukushisa kwinqanaba lokusika, kuba ukushisa akushiyi kunye ne-chip ngokulula. Senza umgangatho kumabanga athile e-carbide kunye nonyango lwe-post-coat yale misebenzi. Nangoko, ubomi besixhobo bulinganiswa ngemizuzu, hayi iiyure. Uyayicwangcisa. Iphepha lomatshini le-CNC livuliwe tsngtaocnc.com ayiloluhlu lwenkonzo nje; lulwamkelo oluchuliweyo batyale imali kwikhithi elungileyo kunye nolwazi lokuphatha olu didi lwemathiriyeli ngaphandle kokuphazamiseka.
Intloko ebuhlungu: ukugrumba imingxuma enzulu. I-thermal conductivity ephantsi kunye nokuqina kwenza ukukhutshwa kwe-chip kube liphupha elibi. Udinga iifluti zeparabolic, ukupholisa koxinzelelo oluphezulu rhoqo ngesixhobo, kunye nesibindi sokubaleka isantya esifanelekileyo kunye nokutya. Uthandabuza, kunye neepakethi ze-chip, i-drill ihamba, kwaye ujonge isiqwenga se-scrap esibiza kakhulu. Sisakhono esakhiwe ekwaphuleni iidrill ezininzi.
I-Nuance yokuphosa: Ngakumbi kunokunyibilika kwesinyithi
Ukwenziwa kobunjwa beqokobhe kwaye utyalo mali zezona ndlela zimbini ziphambili zobunzima isiseko se-cobalt iinxalenye. Azitshintshi. Kwiijiyometri ezinkulu, ezilula noko, ukubumba iqokobhe ukusuka kwisiseko seQSY kunokubiza imali eninzi. Kodwa kufuneka ujonge ukusabela kwe-mold-metal. Ezinye i-cobalt alloys ziyasebenza, kwaye i-silica eqokobheni inokukhokelela ekugqityweni komphezulu ombi ukuba inkqubo yokubopha ayilungiswanga. Yinkqubo efuna ulawulo oluluqilima kwiqondo lobushushu le-preheat lokungunda kunye nobushushu obuthululwayo.
Ukwenziwa kotyalo-mali kukuya kwiimilo ezintsonkothileyo-cinga imilomo yeinjini yeinjini eneendawo zokupholisa zangaphakathi. Iqokobhe leceramic liyi-inert, ngoko ke ukugqitywa komphezulu kuphezulu. Kodwa apha, umtyholi usekondleni nasekuqinisweni. Ezi ngxubevange zinoluhlu olwahlukileyo lokukhenkceza. Udinga izinyusi eziyilwe ngononophelo kunye nesango lokungena ukunqanda ukushwabana kwe-porosity kumacandelo ashinyeneyo. Ndikhe ndabona iiX-reyi zamalungu abonakala egqibelele ngaphandle, kuphela ukubonisa i-spongy core kuba ipateni yokuqinisa ayizange imodelwe kakuhle. Apha kulapho amashumi eminyaka yamava okwenza iipatheni ahlawulayo. Asiyo-CAD nje; kukwazi ukunyenyisa imodeli yedijithali ukuhlawulela ukucutheka kwehlabathi lokwenyani kunye nokucutha kwe-thermal, into eyenziwa ngumqhubi wexesha elide eyakha kwinkqubo yabo.
Emva koko kukho ukuziqhelanisa nokunyibilika. I-cobalt alloys idla ngokunyibilika kwe-vacuum okanye inyibilike phantsi kwe-atmosphere ekhuselayo ukuthintela i-oxidation yezinto ezibalulekileyo, ezisebenzayo ezifana ne-lanthanum okanye i-yttrium ezongezwa kwi-oxide scale adhesion. Awunakuvele ulahle inkunkuma kwiziko elivulekileyo. Ulawulo lwekhemistri kufuneka lungabinasiphako, ibhetshi kwibhetshi. Ukukhankanywa kwe ialloys ezikhethekileyo kwiprofayile ye-QSY ayithengi; sisalathiso esithe ngqo kweli nqanaba lokulawula, ukukwazi ukunyibilika okuphezulu.
Ukuwelda kunye nokulungiswa: Umdlalo we-High-Stakes
Oku mhlawumbi ngowona msebenzi ubuthathaka. Ukulungisa into egugileyo isiseko se-cobalt Ukwaleka kwisitulo sevalve okanye ukwakha ishafti akufani nentsimbi yokuwelda. Igalelo lobushushu libalulekile. Kakhulu, kwaye uhlambulule isiseko sesinyithi ngokugqithisileyo, okanye ngakumbi, kubangele ulwelo lomgaqo-siseko kwindawo echaphazelekayo kubushushu, ukudala izigaba ezinqabileyo eziqhekezayo. Indlela ekhethwayo ihlala i-pulsed GTAW (TIG) kunye nokutya kocingo olubandayo, okuvumela ukuchaneka, iileya ezincinci.
Kufuneka ufanise isinyithi sokuzalisa kungekhona nje kwi-alloy yesiseko, kodwa kwimeko yenkonzo. Ngamanye amaxesha usebenzisa ulwakhiwo olwahluke kancinane ukuqinisekisa ukumelana nokuqhekeka kwintsimbi ye-weld ngokwayo. Ubushushu bangaphambili buhlala buyimfuneko, kodwa ubushushu be-interpass yinto oyibukelayo njengokhetshe. Vumela ukuba kushushu kakhulu, kwaye ulahlekelwe inzuzo. Ndikhe ndakwindawo apho ulungiso lwasilelayo kwinkonzo ngenxa yokuba i-welder, ibihlala ingenasila, igcina ukupakisha iipasile ngaphandle kokuvumela indawo ukuba iphole ngokwaneleyo phakathi kwabo. Isiphumo yaba yindawo enkulu echatshazelwe bubushushu. Ukulungiswa kuxabisa ngaphezulu kwenxalenye entsha.
Ikhokelela kwindawo ebanzi: ixabiso lokwenyani lale ngxubevange alikho nje kwizinto ezikrwada, eziguquguqukayo ngokwaneleyo. Kukwiinkqubo eziqinisekisiweyo, ezikhethekileyo zabasebenzi kunye neenkqubo ezilawulwayo ezifunekayo kwinqanaba ngalinye. Ukufumana indawo kwivenkile yomatshini wenjongo jikelele ngumngcipheko omkhulu.
Ngaphaya kweAerospace: Usetyenziso oluNgabonwayo
Ngelixa i-aerospace isisiphelo esihle, usetyenziso lwehashe lokwenyani lumdaka kwaye lufuna ngakumbi ngendlela yabo. Izixhobo zomngxuma osezantsi zeoli kunye negesi. Amacandelo ezityalo zokulungisa iikhemikhali eziphethe i-catalysts eshushu, e-abrasive. Nxiba iipleyiti kwipulp kunye noomatshini bephepha. Nakwezonyango, kwiindawo ezithile zokufakelwa komthwalo. Isindululo sexabiso asisoloko simalunga nobushushu obuphezulu; imalunga nendibaniselwano eyodwa yeepropathi ekungekho nto eyenye ehambelana nayo ngokuthembekileyo.
Thatha indawo ebonakala ilula nje ngomkhono wokunxiba wempompo yokuphatha uthuthu oluludaka. Intsimbi eqinile inokuthatha inyanga. Ukwaleka kweceramic kusenokuphela. A ethile isiseko se-cobalt ukujula, okwenziwa ngoomatshini ukuze kunyamezeleke, kunokuhlala umjikelo opheleleyo wonyaka wokuguqula, okonga amakhulu amawaka ngexesha lokuphumla. Nantso ke ubalo. Ayikhe ibe malunga nexabiso leqhekeza; imalunga neendleko zizonke zobunini kunye nokuthembeka kokusebenza.
Oku kuyibuyisela kwi-Foundry kunye nomgangatho wevenkile yomatshini. Xa usebenza neqabane elifana ne-QSY, awuthengi nje i-casting okanye ibhloko eyenziwe ngoomatshini. Uthenga isigwebo sabo seminyaka engamashumi amathathu malunga nendlela yokuhamba kuzo zonke ezi zorhwebo-ukusuka kukhetho lwe-alloy, ukubumba, ukuya ekugqibeleni. Iwebhusayithi tsngtaocnc.com lucango lwangaphambili nje. Ixabiso lokwenyani likulwazi oluqokelelweyo, oluzuzwe nzima malunga nokuba yintoni esebenzayo kunye nengasebenziyo xa iiplani zibethe umgangatho wefektri. Yiloo nto eyenza umahluko phakathi kwecandelo elixabisa kakhulu kunye nelixabiseke ngokwenene.
