Makhe sithethe malunga nomxhuzulane wokubunjwa ngokusisigxina. Lelinye laloo magama ajikijelwayo kakhulu, ahlala efakwe kuzo zonke iinkqubo zokubumba ezisisigxina, kodwa kukho intlawulo ethile kuyo engasoloko idibana nayo. Ingcamango ephosakeleyo eqhelekileyo? Ukuba yifancier nje, uguqulelo oluzenzekelayo lokuphosa isanti. Ayiyo. I-physics yokuthululela, ulawulo lwe-thermal ye-metal mold ngokwayo-kulapho ubugcisa bokwenyani bukhona. Awugcwali nje umngxuma; ulawula isiganeko sokuqiniswa eludongeni olubandayo. Yifumane ngokufanelekileyo, kwaye iimpawu zomatshini zihle. Yifumane ingalunganga, kwaye ujonge kwizitshixo ezibandayo, ii-mistruns, okanye ngaphezulu, ukusilela kokungunda kwangaphambi kwexesha. Ndikhe ndabona iivenkile zitsiba zicinga ukuba lutshintsho olulula kwiinkqubo zabo ezikhoyo, kuphela ukutshisa ixesha elininzi kunye nentsimbi ebonisa ibhalansi ye-thermal.
Umgaqo ongundoqo: Konke malunga ne-Thermal Dynamics
Entliziyweni yakhe, umxhuzulane esisigxina ngundo casting ichazwa ngokungabikho koxinzelelo lwangaphandle. Isinyithi singena kumngxuma wokungunda kuphela phantsi kwamandla omxhuzulane. Oku kuvakala kulula, kodwa kuyalela yonke into. Uyilo lwenkqubo yokungena luba lubalulekile-hayi nje ekondleni, kodwa kulawulo lwesiphithiphithi. Ufuna ukuzaliswa kwe-laminar ukuphepha ukubandakanywa kwe-oxide. Oku sikufunde kabuhlungu kwiprojekthi yokuqala yendlu yempompo yaselwandle. I-sprue esezantsi yokuqala yayimxinwa kakhulu, ibangela ukuba i-aluminiyam ingene emngxunyeni. I-castings yayibukeka intle ngokubonakalayo, kodwa i-X-reyi yatyhila umkhondo weefilimu ze-oxide ecaleni kwendlela yokuhamba. Ukungaphumeleli kuvavanyo loxinzelelo. Kwafuneka sibuyele umva, sandise i-sprue, songeze i-coke, kwaye sidibanise isihluzo se-ceramic. Isivuno sathatha hit ekuqaleni, kodwa inxalenye imfezeko ikhuselekile.
Izinto zokubumba ngomnye umdlali ophambili. Ngokuqhelekileyo, ezi ziyintsimbi okanye i-molds yensimbi, ngamanye amaxesha kunye nokufakwa kwe-alloy kwiindawo eziphezulu zokugqoka. Azikho ngokusisigxina ngengqiqo engapheliyo. Behlisa isidima ngebhayisekile eshushu. Umphezulu uphuhlisa i-micro-cracks, imilinganiselo inokukhukuliseka. Isiqhelo esilungileyo kukulogisha ubalo lomjikelo kwii-cavities ezibalulekileyo kunye nokugcinwa kweshedyuli okanye ukulungiswa kwakhona. Ndikhumbula ndisebenza nomthengisi, Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), kuluhlu lwezibiyeli zentsimbi ye-ductile. Amava abo, athathe ngaphezulu kweminyaka engama-30 ekusaseni nasematshinini, abonakaliswe kwindlela yabo yokwenza izinto. Abazange bazise nje ukungunda; babonelele ngelog yokukhwela ibhayisekile eshushu kwaye bacebise ngerejimeni yesitshizi sokuthambisa kubuso bokungunda, eyandisa ubomi bokungunda phantse ngama-30% kwisicelo sethu. Olu luhlobo lokucinga olusebenzayo, lwexesha elide oluvela kumava omgangatho wevenkile yokwenyani.
Apho le nkqubo ikhanya ngokwenene kunye ne-alloys ezixhamla ngokukhawuleza, ukuqina kolwalathiso. I-aluminium kunye ne-magnesium alloys ngabaviwa beklasikhi. Ingqele evela kumngundo wesinyithi icokisa ulwakhiwo lweenkozo, ikunika amandla angcono okuqina kunye noxinzelelo loxinzelelo xa kuthelekiswa nokugalelwa kwesanti. Kwinto efana nentloko yesilinda yemoto okanye isibiyeli se-aerospace entsonkothileyo, ayixoxiswana. Kodwa kufuneka ulumke malunga notshintsho lwecandelo. Icandelo elityebileyo elisecaleni kombambo obhityileyo liya kuphola ngamaxabiso ahlukeneyo, kudala uxinzelelo. Ngamanye amaxesha kufuneka ungeze ukufudumeza kwasekhaya okanye iitshaneli zokupholisa kumngundo, okanye uyilo lokupholisa ngokusemthethweni ukuba uya kubuchwephesha obuphezulu. Yiphazili.
Ukuqwalaselwa kwezinto eziphathekayo: Ayiyiyo yonke into egalela ngokufanayo
Ngelixa i-aluminium ingumntwana wepowusta, umxhuzulane esisigxina ngundo casting ayiphelelanga apho. Siqhube imikhankaso eyimpumelelo ngealloyi ezithile esekwe kwikopolo kunye namabakala athile esinyithi. Kodwa impahla nganye ikulwa ngendlela eyahlukileyo. I-aluminiyam ifuna ukucutheka kakhulu kwaye inokutyekela ekukrazukeni okushushu ukuba isithintelo sokungunda siphezulu kakhulu. I-alloys zethusi zine-conductivity ephezulu ye-thermal, enokuba yikrele elintlangothi-mbini-inkulu yokutya, kodwa inokukhokelela ekuqinisweni kwangaphambili kumacandelo amancinci ukuba isikhunta sakho asishushu ngokwaneleyo ekuqaleni kokubaleka.
Apha kulapho ubuchwephesha bezinto ezibonakalayo be-Foundry bubaluleke kakhulu. Ukujonga umda we-QSY, umsebenzi wabo onama-alloys akhethekileyo afana ne-nickel-based kunye ne-cobalt-based based casting casting ikwazisa indlela yabo nakwi-molds esisigxina. Bayayiqonda indlela i-alloys exotic eziphatha ngayo ngokushushu. Ngokomzekelo, ukugalela i-high-nickel alloy kwi-mold yensimbi ebandayo kubuza ingxaki-ukutshatyalaliswa kwe-thermal kunokubangela ukuba i-mold iqhekeke okanye isinyithi siqhwale ngokukhawuleza. Ukufudumeza kwangaphambili ukungunda kwibhanti ethile, elawulwayo yobushushu iba linyathelo lokuqala elibalulekileyo, hayi ukucinga emva koko. Yinkcukacha eyahlula ukuphosa okusebenzayo kwi-scrap enye.
I-Material-fluidity yenye ijaji ethuleyo. Ipaseji ende, ebhityileyo kuyilo lwenxalenye isenokungabi yingxaki ekugalweni kwesanti kunye nokungunda kwayo, kodwa kwindawo ebandayo, isinyithi sinokuphulukana nobushushu ngokukhawuleza kwaye sikushiye ne-mistrun. Kuhlala kufuneka ulalanise kuyilo, mhlawumbi ujiye udonga ngesiqingatha semilimitha, okanye wongeze idrafti encinci ongakhange uyicwangcise. Luthethathethwano oluqhubekayo phakathi koyilo olufanelekileyo kunye neenyani zefiziksi.
I-Machining Handshake: As-Cast ayiyo Finish Line
Bambalwa kakhulu umxhuzulane esisigxina ngundo castings yiyani ngqo ebandleni. Phantse zonke zifuna inqanaba elithile lomatshini. Apha kulapho udibaniso lokuphosa kunye nomatshini we-CNC phantsi kophahla olunye, njengakwi-QSY, kubonelela ngenzuzo enkulu. I-dimensional consistency ukusuka kwi-mold egcinwe kakuhle esisigxina ilungile, kodwa ayikho i-machining-tolerance ilungile. Uya kuba nesibonelelo somatshini.
Undoqo kukungaguquguquki. Ukuba inkqubo yakho yokuphosa izinzile, isitokhwe esishiywe soomatshini sinokuqikelelwa. Oku kuvumela abadwelisi benkqubo be-CNC ukuba basebenzise iindlela zabo zesixhobo kunye nezixhobo. Ndikhe ndakwiimeko apho umthengisi ophosayo kunye nevenkile yomatshini yayingamaqumrhu ahlukeneyo. Oomatshini bahlala bekhalaza malunga neendawo ezinzima okanye ubukhulu bodonga oluguquguqukayo, besitya izixhobo zokusebenza. Xa i-caster kunye ne-machinist iyinxalenye yencoko efanayo kwasekuqaleni, loo miba iyayilwa okanye ibalwe ngayo. I-caster iyazi ukuba yeyiphi imiphezulu ebaluleke kakhulu ebusweni kwaye inokuqinisekisa umgangatho ongcono wokuphosa apho.
Unyango ubushushu emva kokuphosa yenye ibhulorho ukuya machining. Uninzi lwe-aluminiyam etyhidiweyo kwi-molds esisigxina ifumana unyango lwe-T6 kunye nokuguga. Oku kunciphisa uxinzelelo kunye nokuphucula amandla, kodwa kubangela intshukumo ethile. Umboneleli odibeneyo othe nkqo uyaluqonda olu landelelwano. Banokwenza unyango lobushushu, emva koko batshintshe inxalenye, ngelixa bebala ukugqwetheka okuqikelelweyo kwisicwangciso sabo sokulungisa. Ilungelelanisa lonke ikhonkco kwaye inciphisa umngcipheko wenxalenye ephoswe kakuhle ibonakaliswe kumsebenzi wesibini.
Xa Ingalunganga: Izifundo ezivela kwi-Scrap Bin
Akukho ngxoxo inyanisekileyo ngaphandle kokuthetha ngokusilela. Enye inkumbulo ecacileyo ibandakanya ibhetshi yee-aluminiyam ezininzi. Uyilo lwalunepokotho enzulu, esecaleni. Uyilo lokungunda lwaluquka intsimbi engundoqo ukuyibumba. Sasicinga ukuba sinolawulo lwe-thermal oluqikelelweyo. Iziqwenga ezimbalwa zokuqala zazilungile, kodwa ngokudubula kwamashumi amabini, saqala ukubona i-shrinkage porosity kuloo pokotho. Ingxaki? Undoqo wentsimbi wawufunxa ubushushu kodwa wawungenayo indlela yokubuchitha kakuhle. Yaba yindawo yokutshisa ubushushu, emva koko yaba yindawo eshushu, iphazamisa ukuqina kolwalathiso esiludingayo. Isisombululo besingapholi ngakumbi; yayimalunga nokutsalwa kobushushu. Kwafuneka sihlaziye i-core kunye nesekethe yokupholisa amanzi. Yayiluhlengahlengiso olunexabiso eliphezulu olusifundise ukuba singabonisi nje inxalenye, kodwa ubunzima bobushushu balo lonke icandelo lokungunda.
Enye i-classic pitfall kukuqikelela i-engile eyidrafti. Ukufumana inxalenye ekubunjweni kwesinyithi, udinga idrafti. Ngamanye amaxesha, ukuhlangabezana ne-cosmetic eqinile okanye i-aerodynamic spec, abayili bafuna ukuyinciphisa. Sizame idrafti ekufutshane-zero kwizindlu ze-magnesium kube kanye, sixhomekeke ekugqityweni kokungunda okuphezulu kunye nenkqubo ye-ejector. Yasebenza malunga nemijikelo engamashumi amahlanu. Emva koko, uburhabaxa obuvela kwibhayisekile eshushu yaqala ukubamba ukuphosa. Siye sancamathela, nto leyo eyakhokelela ekugqwethekeni ngexesha lokukhutshwa. Kwafuneka siyeke, siphinde senze umatshini umngxunya, kwaye songeze uyilo esifanele sibe nalo kwasekuqaleni. Ngamanye amaxesha, imithetho esisiseko ikhona ngesizathu.
Ukuthanjiswa bubugcisa bayo bobumnyama. I-mold spray (umxube we-graphite, i-silicate, okanye enye i-compounds emanzini) yenza izinto ezintathu: inceda ukukhulula inxalenye, inika umqobo we-thermal ukulawula izinga lokuqina, kwaye ikhusela indawo yokubumba. Ukutshiza kancinci kukhokelela ekuncamatheleni. Ukutshiza kakhulu okanye ngokungalinganiyo kudala imijikelo ebandayo kunye neziphene. Sisakhono sezandla esithatha ixesha ukuphuhlisa. Ukuzenzela isitshizi kungcono ukuze ungaguquguquki, kodwa usafuna iliso lomntu ukuze ubukele ukwakhiwa okanye iindawo eziphosiweyo. Linyathelo elingaze lifumane ubukhazikhazi kodwa linokwenza okanye liphule isivuno sakho.
INiche kunye neKamva: Apho Ingena khona
Ngoko, apho umxhuzulane esisigxina ngundo casting ukuhlala kwi-ecosystem yokuvelisa? Ayisiyonto yokubaleka kwesigidi-yeyokuphoswa koxinzelelo oluphezulu. Kwaye ayisiyiyo eyeprototypes enye-leyo yoshicilelo lwe-3D okanye isanti. Indawo yayo eswiti iphakathi ukuya kumthamo ophezulu wemveliso yamacandelo abaluleke kakhulu, apho iipropathi eziphezulu zesinyithi zithethelela iindleko eziphezulu zezixhobo xa kuthelekiswa nokuphosa esantini, kodwa imiqulu ayithetheleleki inkcitho enkulu yemali yoxinzelelo oluphezulu lokufa. Cinga ngemiqulu ukusuka kumawaka ambalwa ukuya mhlawumbi kwikhulu lamawaka amaqhekeza ngonyaka.
Ikamva, ndicinga ukuba, lilele kulawulo lwenkqubo ekrelekrele kunye nesayensi yezinto. Izinzwa ezifakwe kwi-molds ukujonga ubushushu ngexesha lokwenyani, ukondla idatha ukubuyisela ukulungelelanisa ixesha lokugalela okanye imijikelo yokutshiza. Ukusetyenziswa kwemveliso eyongeziweyo ukwenza amajelo okupholisa alungelelanisiweyo ngaphakathi kodaka lokungunda, ukusombulula loo miba iyingozi yokungalingani kwe-thermal ebesisoloko siyilwa ngokuqagela. Kwaye njengoko i-alloys iguquguquka, ngokukodwa i-alloys ekhaphukhaphu yezithuthi zombane kunye ne-aerospace, imfuno yenkqubo enika ibhalansi efanelekileyo yeepropati, iindleko, kunye nomthamo uya kugcina le ndlela ifanelekileyo.
Yinkqubo efuna intlonipho kwizinto ezisisiseko. Akukho qhosha lomlingo. Ifuna ukuqonda okunzulu kwe-metallurgy, ukuhanjiswa kobushushu, kunye noyilo lwezixhobo, zonke ziyaguquka ngexesha lokugalelwa. Xa ubona inkampani efana QSY uluhlu lokubumba iqokobhe, ukuphosa utyalo-mali, kunye nomatshini we-CNC ecaleni kwesakhono sabo, ithetha kumbono opheleleyo wokwenziwa kwenxalenye yentsimbi. Bayayiqonda loo nto umxhuzulane esisigxina ngundo casting ayisosiqithi; likhonkco kwitsheyini eliqala nge-alloy etyhidiweyo kwaye liphele ngecandelo elichanekileyo. Kwaye ukufumana elo khonkco lilungile kuko okwahlula umthengisi wamacandelo kwiqabane lokwenyani lemveliso.
