Xa abantu abaninzi besiva 'isixhobo sokubumba inaliti yentsimbi', ngoko nangoko baba nomfanekiso omkhulu, umenyezelayo ukubumba inaliti yentsimbi umatshini ngokwawo-owona unetoni yamandla ebambayo kwiphepha lenkcazo. Yimpazamo yokuqala leyo. Ngokwenyani, olo shicilelo sisiqalo nje, kwaye ngokungathandabuzekiyo ayisosona siqwenga sibalulekileyo kwimveliso engaguqukiyo, enengeniso. Umdlalo wokwenyani udlalwa kwi-cast exhasayo: imigca yokuqhawula, i-sintering furnaces, kunye neenkqubo zokulawula umoya we-atmospheric apho uninzi lwababoneleli be-gloss kwi-pitches yabo yokuthengisa. Ukuba iprofayile yakho yesithando somlilo ine-20-degree hot spot, okanye ukuseta i-solvent debinding yakho ayinakukwazi ukumelana nenxalenye yejiyometri, loo matshini wokushicilela we-state-of-the-art wokubumba yi-paperweight ebizayo.
I-Molding Press ayililo iQhawe
Makhe sithethe ngomatshini wokubumba ngokwawo. Ewe, udinga ukuchaneka, ulawulo olululo lokudutyulwa, kunye ne-clamp eyomeleleyo. Kodwa ukuthanda kakhulu kunye nesantya esiphezulu sokutofa? Ihlala igqithiswa kwi-MIM. Utyhala isitokhwe esizaliswe kakhulu, se-viscous, hayi iplastiki. Ndikhe ndabona iivenkile zichitha imali kwiiyunithi zenaliti eqhutywa yi-servo ekwaziyo isantya esimnandi, kuphela ukuziqhuba nge-30% yomthamo ukunqanda imiba yejetting kunye nokwahlukana. Indawo eswiti ngumatshini oneprofayile yoxinzelelo olugqwesileyo kunye nolawulo lobushushu kumbhobho. Umngxunya oqhelekileyo kukujongela phantsi ukutshintsha kwezinto eziphathekayo. Ukuba usebenzisa i-17-4PH kwiveki enye kunye ne-316L elandelayo, udinga inkqubo enokucocwa ngokucocekileyo nangokufanelekileyo. Ungcoliseko olushiyekileyo olunqamlezileyo kwisikrufu okanye ivelufa yokutshekisha luya kukuphatha kakubi kwinqanaba le-sintering, lubonakale njengombala ongaqondakaliyo okanye amabala abuthathaka.
Isiphelo se-clamp sibalulekile, kodwa kungekhona ngenxa yezizathu onokucinga ngazo. Incinci malunga ne-sheer tonnage kwaye ngaphezulu malunga ne-parallelism kunye nokuqina kweplaten. Ukuphambuka okuncinci ngexesha lokutofa kunokubangela umahluko omncinci kodwa obalulekileyo kwinxalenye yoxinaniso, ekhulisa ukugqwesa okukhulu ngexesha lokuntywila. Oku sikufunde kabuhlungu kwiprojekthi yecandelo lesixhobo somthamo ophezulu. Amalungu adibana nayo yonke imilinganiselo yelizwe eliluhlaza, kodwa emva kwe-sintering, iprofayili yezinyo yayingaphandle. Oyena nobangela? Imeko engenakulinganiseka engahambelaniyo kumngundo ngexesha lokutofa, ilandwa umva kwibhayi yeqhina egugile kancinane kumshicileli omdala. Ukulungiswa kwakungathengi umatshini omtsha weetoni ezingama-500; ibisakha ngokutsha iyunithi yokubambelela kumatshini wokushicilela okhoyo weetoni ezingama-250.
Kulapho ubambiswano kunye ne-Foundry eliqonda lonke ikhonkco kubaluleke kakhulu. Inkampani efana Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), kunye nemvelaphi yabo enzulu kwi-investment casting kunye ne-CNC machining, ifumana oku intuitively. Bajonga umshicileli wokubumba kungekhona njengeyunithi ezimeleyo kodwa njengenyathelo lokuqala kuhambo lwe-dimensional oluphela kunye necandelo elichanekileyo elichanekileyo. Amava abo kunye ne-alloys eyinkimbinkimbi abaxelela ukuba inxalenye eluhlaza kufuneka ibukeke njani ukuze iphile kwaye iphumelele ngokusebenzisa i-debinding kunye ne-sintering. Yimbono epheleleyo emininzi yokudlala ecocekileyo Izixhobo zeMIM abathengisi abaswele.
I-Bottleneck yokwenyani: i-Debinding & Sintering
Kulapho iiprojekthi zihlala okanye zifa khona. I-Catalytic debinding, i-solvent debinding, i-thermal debinding-nganye inendawo yayo, kwaye ukukhetha okungalunganga kuyabiza. Iinkqubo zokunyibilikisa, umzekelo, zilungile kumacandelo ashinyeneyo, kodwa ukubuyiswa kwesinyibilikisi kunye nokuphathwa kongeza umaleko wokuntsonkotha kokusebenza kunye neendleko ezingasoloko zikho kwi-ROI yokuqala yokubala. Ndikhumbula umsebenzi apho sasisebenzisa inkqubo yokunyibilikisa inxalenye ene-hub eyi-15mm. Ixesha lomjikelo lalilungile, kodwa ukusetyenziswa kwe-solvent kunye ne-N efunekayo? Ingubo yokhuseleko yenza ukuba ixabiso lenxalenye nganye lingafikeleleki. Siye satshintshela kumjikelo we-thermal debind olungiselelweyo kumgca owahlukileyo, obufuna irempu ecothayo kunye nokuhamba kwerhasi okuchanekileyo, kodwa ekugqibeleni kuqoqosho oluthe kratya.
Iziko elitshisayo yintliziyo. Ulawulo lwe-atmosphere yinto yonke. I-ppm embalwa ye-oxygen okanye ukufuma kwi-1300 ° C inokonakalisa ibhetshi. Umahluko phakathi kwesithando somlilo esilungileyo kunye nesikhulu asikho nje izinto zokufudumeza; luyilo lwegesi yokungena, ingqibelelo ye-muffle, kunye nokujongwa kwexesha lokwenyani. Kufuneka ubone indawo yombethe, inqanaba le-oksijini, kunye neqondo lokushisa kwiindawo ezininzi, kungekhona nje kwi-thermocouple. Sake saba nebhetshi yamalungu entsimbi engenastainless aphuma kunye nekhabhoni etyetyisiweyo, indawo enqabileyo. Izigodo zesithando somlilo zibonise ubushushu obugqibeleleyo kunye nomoya. Kuthathe iiveki ukufumana umba: ukuqhekeka okuncinci, phantse okungabonakaliyo kwimuffle emva kwezinto zokufudumeza, evumela ukungena komoya kuphela ngexesha lemijikelo ethile yokupholisa. Idatha yayibukeka icocekile, kodwa iinxalenye zixelele ibali lokwenyani.
Kumvelisi wenkqubo ezininzi njenge QSY (https://www.tsingtaocnc.com), inqanaba le-sintering libaluleke kakhulu. Umsebenzi wabo nge-cobalt kunye ne-nickel-based superalloys kuthetha ukuba bajongana neeprofayili ze-sintering ezingaxoleliyo. Isixhobo kufuneka sibambe amaqondo obushushu aphezulu ngobunyulu obukhethekileyo. Nakuphi na ukutenxa akubangeli nje i-dimensional scrap; inokutshintsha ngokwesiseko iipropathi zetsimbi abaye baqeshwa ukuba bazifezekise. Amashumi eminyaka abo ekujuleni nasekusebenzeni bathetha ukuba basondela kwii-specs ze-oven ngeliso lenzululwazi yezinto, hayi nje uluhlu lokukhangela lomphathi wemveliso.
Izixhobo kunye ne-Feedstock: Ubambiswano olungavunywanga
Awukwazi ukuthetha ngayo isixhobo sokubumba inaliti yesinyithi ngaphandle kokuvuma isixhobo. Ukungunda kulapho i-feedstock idibana khona nomatshini. Impazamo eqhelekileyo kukuyila ukubumba kwe-MIM okufana nokubumba inaliti yeplastiki. Amazinga okucutheka aphezulu kwaye aqikelelwa kancinci, kwaye amasango kunye neembaleki kufuneka zinike ingxelo malunga nobume bempahla yokutya. Ndibone iimolds zentsimbi ezintle, eziqinisiweyo ziguga phambi kwexesha ngenxa yokuba isango belincinci kakhulu, libangela ukucheba nokugruzuka. Umgangatho wesixhobo sentsimbi ubaluleke kakhulu. Akunjalo nje ngobulukhuni; imalunga nokumelana nokunxiba kunye ne-thermal conductivity.
Emva koko kukho i-feedstock. Yintsebenziswano phakathi komatshini wokubumba kunye nezinto eziphathekayo. Umatshini kufuneka ulungelelaniswe kwi-viscosity ethile kunye novakalelo lwe-shear ye-feedstock lot. Ukwahluka kwe-5% kumxholo we-binder kunokufuna ukuphinda kufakwe iprofayili ye-injection parameters. Izixhobo ezilungileyo zivumela oku kulungiswa kakuhle-isantya sokutofa ezininzi / iiprofayili zoxinzelelo, ulawulo oluchanekileyo lwendawo yombhobho, kunye noyilo lwe-screw olunika ukuxuba okulungileyo ngaphandle kokuthoba isibophelelo. Injongo yi-homogeneous, inxalenye eluhlaza engenasiphako kunye nobuninzi obufanayo. Ukuba ulwa amanqaku e-sink okanye i-voids kwindawo eluhlaza, sele uphulukene nedabi lozinzo lwe-dimensional kamva.
Oku kusebenzisana kungenxa yokuba abavelisi abadibeneyo banomphetho. Kwi-QSY, ubuchule babo abubekwanga. Iqela elisebenza ngoomatshini inxalenye yokugqibela ene-sintered kusenokwenzeka ukuba linike ingxelo kwiqela eliyila isixhobo seMIM, lisazi apho unyamezelo olubalulekileyo lubanjwe khona kwinkqubo yeCNC. Le ngxelo ivaliweyo phakathi kokubumba, ukugoba, kunye nomatshini yinto ongafane uyifumane kwivenkile eyenza kuphela iMIM. Ikhokelela kuyilo lwezixhobo olukrelekrele olulungiselelwe lonke ikhonkco lokuvelisa, hayi nje inyathelo lokuqala.
Ukudityaniswa kunye noBugcisa obuMnyama boLawulo lweNkqubo
Ukuthenga amaqhekeza ezixhobo zodidi olugqwesileyo akuqinisekisi eyona nkqubo ibalaseleyo. Ukudityaniswa bubugcisa obumnyama. Ingaba irobhothi iliphatha njani indawo ecekethekileyo eluhlaza ekungundeni? Ugcinwa njani umoya ngexesha lokudluliselwa ukusuka kwi-oven edityanisiweyo ukuya kwi-sintering oven? Ezi ziinkcukacha eziqhelekileyo, ezingathandekiyo ezimisela isivuno. Ukungcangcazela okuncinci ngexesha lokudluliselwa kwerobhothi kunokudala iintanda ezincinci kwindawo ephuma kwi-thermal ezibonakalisa kuphela njengoqhekeko oluyintlekele kwi-sintering. Iinkqubo zokuphatha imathiriyeli zibaluleke njengoomatshini bokuqala.
Isoftware yolawulo lwenkqubo yenye indawo apho izithembiso zihlala zidlula ubunyani. Eyona nto ilungileyo ngumsonto wedijithali ongenamthungo ukusuka kwinani lelokishi ye-feedstock ukuya kwiipropati eziyinxalenye yokugqibela. Ngokwenyani, uninzi lweevenkile zidibanisa idatha esuka koomatshini abahlukeneyo abaneeprothokholi ezahlukeneyo. Isitshixo kukuchonga amanqaku olawulo abalulekileyo-uxinzelelo oluphezulu lwenaliti, ijika lokulahleka kobunzima, i-sintering shrinkage-kunye nokwakha i-SPC eyomeleleyo ejikeleze ezo. Kungcono ukuba neendawo ezintathu ezilawulwa ngokugqibeleleyo nezilungelelanisiweyo zedatha kunedeshbhodi ezele ngamanani angenantsingiselo.
Ukujonga amandla abanzi enkampani kudla ngokubonisa indlela yabo yokudibanisa. Imbali ende ye-QSY ekubunjweni kweqokobhe kunye nokuphosa utyalo-mali icebisa ukuba baqonde iinkqubo ezilawulwayo, ezinamanqanaba amaninzi kunye nokubaluleka kwe-atmosfera. Ukusebenzisa loo ngqondo ingqongqo, igxile kwi-metallurgy ekukhetheni izixhobo ze-MIM kunye nokudibanisa kuyinzuzo enkulu. Banokuthi babeke phambili ukuhambelana kwendawo yomlilo phezu komatshini wokubumba onezikrini ezikhanyayo zedijithali, kuba bayazi ukuba yeyiphi eyona nto iqhuba iipropathi zezinto zokugqibela.
Isiphelo: Ukucinga kwiiNkqubo, hayi koomatshini
Ngoko ke, xa kuvavanywa isixhobo sokubumba inaliti yesinyithi, utshintsho ekucingeni ukusuka ekuthengeni oomatshini ukuya ekwakheni inkqubo. Luthotho lweenkqubo ezixhomekeke kwelinye. Amandla ekhonkco anqunywe yikhonkco elibuthathaka kakhulu, elinqabile ukuba libe ngumshicileli wokubumba. Ihlala ibophelela ukufana, imfezeko yemo yezoko, okanye i-handoffs phakathi kwezigaba.
Imisebenzi ephumelele kakhulu endiyibonileyo yileyo apho izixhobo zikhethwa ngabantu abafanele bahlale kunye namacandelo avelisa yonke indlela ukuya kumgca wendibano yomthengi. Bakuxabisa ukomelela, ukulawula, kunye nokusetyenzwa ngaphezu kweenkcazo zentloko. Babuza umthengisi wezixhobo kungekuphela nje malunga namaxesha okujikela, kodwa malunga neeshedyuli zolondolozo lwe-muffle yesithando somlilo, ukufumaneka kwamacandelo abalulekileyo angasese, kunye nengqiqo emva kokhuseleko lokudibanisa kumgca wokuqhawula.
Ekugqibeleni, izixhobo ezilungileyo zeMIM zenza ukuba ziphindeke. Ijika inkqubo edume kakubi ngobugcisa bayo abantsundu ibe yindlela yokuvelisa ethembekileyo, enemizi-mveliso. Kwaye oko kuthembeka koko kuvumela inkampani ukuba ingenzi nje inxalenye, kodwa iqinisekise ukusebenza kwayo ebaleni-nokuba sisixhobo sotyando sentsimbi okanye i-nickel-alloy turbine component. Olona luphawu lokwenyani, ngaphaya kwenkcazo ekwincwadana.
