Xa usiva 'i-ductile iron investment casting', into yokuqala enokuthi qatha engqondweni yela phepha likhazimlayo lepropathi: amandla aphezulu, i-ductility elungileyo, ukuxhathisa ukunxiba. Kwaye ewe, yinyani yonke loo nto ephepheni. Kodwa apho ibali lokwenyani liqala khona kuxa uzama ukufezekisa ezo propati ngokungaguquguqukiyo kwindawo entsonkothileyo, enodonga olucekethekileyo okanye kumzimba wevalvu ephezulu. Kulapho incwadi yesikhokelo iphela kwaye umgangatho wesiseko uthatha indawo. Uninzi lwabaphathi bemithombo bacinga ukuba kungokukhetha ibakala lemathiriyeli-uthi, i-QT600-3 okanye enye into-kwaye okunye kumlingo. Umlingo wokwenyani, okanye amaxesha amaninzi intloko ebuhlungu, ikwinkqubo yokuxhawula isandla phakathi kwe utyalo mali indlela kunye ne-metallurgy ye-iron ductile ngokwayo.
Inkqubo yokuxhawula izandla: Apho iWax idibana neMetallurgy
Ukwenziwa kotyalo-mali kukunika inkululeko engakholelekiyo yejometri. Sithetha malunga neenxalenye ezineepaseji zangaphakathi ezinokuthi akunakwenzeka ukwenza umatshini okanye ukuvelisa ngokuphosa isanti. Kodwa nge-iron ductile, ngokukhawuleza ubophelelekile ngokuqiniswa. Ukungunda kweqokobhe ukusuka kwi utyalo mali inkqubo iqinile, phantse ayixoleli. Ngokungafaniyo nesanti, ayivelisi. Kwintsimbi engwevu, loo nto ihlala ilungile. Kodwa kwi-ductile, udinga ukuba ngundo ukulungiselela ukwandiswa okuncinci ngexesha lesigaba sokwakheka kwamaqhuqhuva egraphite. Ukuba ayenzi njalo, ufumana i-shrinkage porosity, okanye okubi nakakhulu, i-chill eyoyikisayo ephazamisayo apho ugqiba nge-carbides kwiindawo oyenzelwe ukuba zenziwe.
Ndikhumbula iprojekthi yecandelo le-hydraulic, indlu edibeneyo ene-flanges edibeneyo. Uyilo lwalukhazimlayo ukusuka kumbono wendibano, ityala elifanelekileyo utyalo mali. Sayicaphula, safumana umyalelo. Ukuthululwa kokuqala kwakubukeka kukuhle-ukugqiba okuphezulu okuphezulu, iinkcukacha ezibukhali. Kodwa emva kokunyangwa kobushushu (i-ferritizing anneal, ukuba ichaneke), izinga lokungaphumeleli kovavanyo loxinzelelo lalibi kakhulu. Ivuza yonke indawo. Ingxaki? Siye sayila isango lokungena kunye nokunyuka njengoko besiya kwenza utyalo-mali lwentsimbi. Intsimbi yentsimbi ayityi njengentsimbi. Ukwandiswa kwegraphite kunokunceda ngokwenene ukuzondla, kodwa kuphela ukuba uyakuvumela. Saye saphakama kakhulu, sakha iindawo ezishushu ezikhokelele ekuncipheni naphezu kokwandiswa. Kwafuneka ubuyele umva, ulingise kwakhona ngeeparitha zentsimbi ze-ductile ezifanelekileyo, tshintshela kwizinyusi ezincinci, ezibekwe ngobuchule. Yasebenza, kodwa yasixabisa iinyanga ezimbini.
Lo ngundoqo wayo. Awunakuthatha nje i utyalo mali inkqubo elungiselelwe i-iron engenastainless kwaye iqhube i-ductile iron kuyo. Yonke inkangeleko ye-thermal, ukusuka kwiqokobhe lobushushu bangaphambi kobushushu ukugalela iqondo lobushushu ukuya kwiqondo lokupholisa kwiqokobhe, kufuneka kuphinde kucingwe ngokubunjwa kwegraphite espheroidal. Unyango lwe-magnesium ngokwalo luyinto eguquguqukayo-ukuphela yinkxalabo yokwenyani, kwaye ngexesha elithathayo ukugalela iqela lamaqokobhe antsonkothileyo, ukungunda kwakho kokugqibela akunakuba nenani leqhuqhuva elifanayo nelokuqala ukuba awuqapheli.
IiNuances zeMathiriyeli: Ayisiyontsimbi nje
Nangaphakathi kwi-iron ductile, ukhetho lwe-alloy yokutyala imali luthe ngqo. Umxholo weSilicon ubalulekile kumanzi ukuze ugcwalise loo macandelo amancinci, kodwa aphezulu kakhulu kwaye uphembelela i-ductility kwaye ukhuthaze i-ferrite, enokuthi ingabiyiyo le nto ufuna ukuyinxiba. Intwana yobhedu okanye i-nickel yokuzinzisa i-pearlite? Ngokuqhelekileyo kuyimfuneko, kodwa ke kufuneka ujonge ulwahlulo kumacandelo anzima. Sisebenza ubukhulu becala ngamabakala afana ne-450-10, 500-7, kunye ne-600-3, kodwa eyona festile yekhemistri esiyiqhubela iinxalenye zotyalo-mali ziqina kunokulingana kwesanti-cast.
Ndandiphonononga i-batch of castings ye-pump impeller evela komnye umthengisi kutshanje-inxalenye yayiyeyenkonzo enobungozi, ngoko bachaza i-SiMo ductile iron (silicon-molybdenum alloy). Ukhetho oluhle lobushushu kunye nokubola. Kodwa iindawo zotyalo-mali zibonise ukuqhekeka kwangaphambi kwexesha elebhu. Umoni? I-molybdenum, i-carbide eyomeleleyo yangaphambili, yahlulahlulwe kwi-vanes encinci, epholile ngokukhawuleza ye-impeller, idala iindawo ezinqabileyo. Inguqulelo yesanti-cast, kunye nokupholisa okucothayo, ayizange ibe nalo mba. Ulungiso yayingelotshintsho lwekhemistri, kodwa yinkqubo enye: ukulungisa ukwakheka kweqokobhe ukumodareyitha kancinane izinga lokupholisa kwezo ndawo zibalulekileyo. Ngolu hlengahlengiso lwemizuzu olwahlula inxalenye esebenzayo ukusuka kwethembekileyo.
Apha kulapho isiseko samava e-Foundry siyinto yonke. Inkampani efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), kunye namashumi amathathu eminyaka abo iqokobhe ngundo ukuphosa kwaye utyalo mali, ngekwakhiwe ithala leencwadi ezi zinto zibalulekileyo. Banokwazi, umzekelo, ukuba isibiyeli sentsimbi esinodonga olucekethekileyo olufuna iipropathi ze-500-7, banokufuna ukujolisa kwisiphelo esiphezulu soluhlu lwe-magnesium kwaye basebenzise i-inoculant ethile kunye nesantya esikhawulezayo sokuphela kokuqinisekisa ukuba amaqhuqhuva enza kwangoko kulawo macandelo okupholisa ngokukhawuleza, ukuphepha i-carbides. Loo nto ayikho kulo naliphi na iphepha; kukumaphepha enkqubo yabo.
Isiphumo soMatshini: Musa ukukujongela phantsi
Inzuzo enkulu yokuphosa utyalo-mali ikufuphi ne-net-shape, enciphisa iindleko zomatshini. Kodwa ukunciphisa akuthethi kuphelisa. Phantse zonke iintsimbi zokuphonswa kwentsimbi zifuna ukwenziwa ngoomatshini: ubuso be-flange, i-bore diameters, intambo. Nanku omnye umgibe: ukuqina komphezulu we as-cast. Ngenxa yokuba iqokobhe leceramic lipholisa isinyithi ngokukhawuleza, ulusu lokuphosa lunokuba nzima kwaye lunokuba ne-decarb layer okanye ukufakwa kwe-oxide. Ukuba inkqubo yakho ye-CNC ithatha ubulukhuni obufanayo kwaye iyenze nje, uya kutshisa ngokufaka kwipasi yokuqala kwaye ufumane umphezulu ombi kwindawo yomatshini.
Oku sikufunde kabuhlungu ekubalekeni kwemizimba yevalvu. Iibhobho zazifuna ukugqiba kakuhle ukuze kugcinwe ingqibelelo. Ukuhlolwa kwenqaku lokuqala kwakugqibelele. Kodwa kwimveliso yobuninzi, ukunxitywa kwezixhobo bekungalunganga, kwaye saqala ukubona ukukrazula kumphezulu. Umba yayikukohluka kancinci kobulukhuni bolusu ukusuka kwiqela ukuya kwiqela, okuphenjelelwa ngumahluko omncinci kwi-shell dewaxing kunye nobushushu bangaphambili. Isisombululo yaba yipasi elungeleleneyo erhabaxa ene-geometry eyomelele ngakumbi, ngokukodwa ukutyhutyha loo meko yesikhumba eguquguqukayo, elandelwa kukugqiba. Yongeza imizuzwana engama-45 kwixesha lomjikelo, kodwa igcine intywenka yemali kwiindawo ezilahliweyo kunye nezixhobo zokusebenza.
Kungenxa yoko le nto indlu edibeneyo yenza zombini ukuphosa kunye ne CNC Machining ngaphakathi, njengeQSY ikhankanya kwimisebenzi yabo, inenzuzo eyahlukileyo. Iqela labo lobuchwephesha ayiloqumrhu elahlukileyo; babuyela ngqo kwi-Foundry. Banokuthi, Heyi, le bhetshi isika ngokwahlukileyo, kwaye i-Foundry inokuyilandela emva kobushushu beladle okanye ibhetshi ye-inoculant. Le ngxelo ivaliweyo ibalulekile ukuze kubekho ukungaguquguquki kwi-combo yenkqubo yezinto eziphathekayo efana nale.
Xa Kukhanya (Kwaye Nini Ukuhamba)
Ngoko nini i-ductile iron investment casting ukhetho oluchanekileyo ngokupheleleyo? Yigolide kwizinto ezintsonkothileyo, ezigxininisiweyo ezifuna ukuncitshiswa kobunzima kunye nokuthembeka okuphezulu, apho umatshini osuka kwibhloko eqinileyo okanye ukudibanisa kuya kubiza kakhulu. Cinga ngezibiyeli ze-aerospace, iilinki zokuxhoma iimoto ezisebenza ngokuphezulu, okanye izixhobo ezithile zezixhobo zonyango ezifuna ukomelela kunye nokuvala inzala. Umphezulu ogqityiweyo kunye nokuchaneka komdanso kuvula iingcango ezingakwaziyo ukutyhilwa yisanti.
Kodwa kufuneka wazi ukuba ungatsho nini. Ukuba indawo ingqindilili kakhulu kwaye ichunky, uxinzelelo lwe-thermal olusuka kwiqokobhe elomeleleyo lunokuba yingxaki, kwaye unokuba ngcono ngokuphosa isanti esemgangathweni. Ukuba inxalenye ifuna i-100% ductility (njengebakala le-18% lolwalulo), ulawulo lwenkqubo kufuneka lube nyulu ngokupheleleyo, kwaye iindleko zisenokungathetheleli oko. Kwaye ukuba umthamo wonyaka ungamakhulu amawaka, ixabiso lenxalenye nganye yewax kunye neqokobhe leceramic inokukutyhalela ekungundeni okusisigxina okanye iinkqubo zokuphosa.
Ndakhe ndathetha ngeprojekthi yetyesi yegiya enzima. Idizayini yayintsonkothe ngendlela emangalisayo ngeembambo zangaphakathi. Injineli yayizimisele ukusebenzisa i-investment-cast ductile iron ngokuchanekileyo. Emva kokuphonononga amacandelo angama-50mm ubukhulu, sicebise ngokuchasene nayo. Umngcipheko wokuncipha kunye neendleko eziphezulu zepateni enkulu ye-wax kunye negobolondo yayiziflegi ezibomvu. Sicebe umhlanganiselwa: ukubunjwa okuphezulu kwesanti-okuchanekileyo kumzimba oyintloko, kunye neempawu zojongano olubalulekileyo kuphela njengofakelo olwahlukileyo, utyalo-mali olufakelweyo lwentsimbi olunokudityaniswa okanye lubotshelelwe. Ngamanye amaxesha olona setyenziso lubalaseleyo lwetekhnoloji kukwazi ukuba ungayisebenzisa phi intwana yayo.
Ikhonkco loNikezelo lokwenene: Ukufumana uMlingane oLungileyo
Le asiyompahla yorhwebo. Awunakuthenga nje kwi-Alibaba ngexabiso ngekhilogram nganye. Ukhangela isiseko esingadwelisiyo nje i-ductile iron investment casting njengesakhono, kodwa unokukubonisa irekhodi lomkhondo. Cela uphononongo kumacandelo anobungqingqwa becandelo elifanayo kunye nobunzima. Buza malunga nolawulo lwabo lokubalwa kwamaqhuqhuva, izenzo zabo ezisemgangathweni zonyango lobushushu (njengokuphoswa, ukufakwa, ukucinywa & nobushushu?), kunye nesakhono sabo sangaphakathi se-NDT. Ngaba banokwenza iX-ray yexesha langempela okanye i-ultrasonic kwiindawo ezibaluleke kakhulu? Bayiphatha njani imbaleki kunye nokususwa kwesango kwi-brittle shell? Ngaba banayo endlwini CNC Machining ukuze baqinisekise iicastings abazivelisayo?
Ubomi obude bomthengisi buhlala buthetha kakhulu. Inkampani esebenza ngaphezu kweminyaka engama-30, njengaye QSY, uye wabona zonke iipateni zesiphene onokucinga ngazo kwaye uye wakha izenzo zokulungisa kwinkqubo yabo. Ukukhankanywa kwabo ngokusebenza kunye ne-alloys ezikhethekileyo ezifana ne-nickel-based based based on the level of metallurgical control eguqulela kakuhle kwiimfuno ezichanekileyo ze-ductile iron. Baya kuqonda ukuba ukuthululelwa kwe-nickel alloy kunye nentsimbi ye-ductile yihlabathi ehlukeneyo, kodwa uqeqesho kulawulo lwenkqubo luyafana.
Ekugqibeleni, uphumelele i-ductile iron investment casting bubungqina bobunjineli benkqubo eqeqeshekileyo. Ayisiyiyo itekhnoloji ekhanyayo, kodwa xa icofa, ivelisa izinto ezintle kuyilo kunye nokusebenza kakubi. Into ephambili kukuba ungayisondeli njengento elula yokutshintsha izinto, kodwa njengendlela yokuvelisa ezinikeleyo, ene-nuanced enemithetho yayo. Ungayihoyi loo mithetho, kwaye uya kufumana inkunkuma ebiza kakhulu. Bahloniphe, iqabane kunye nesiseko esifumana ukuxhawula ngokwenene, kwaye unokuvula iijiyometri kunye nokusebenza okunzima ukufikelela kuyo nayiphi na enye indlela.
