Ikhithi yokuphonsa ye-wax elahlekile ayilona nje elinye ibhokisi lobuciko—ibhuloho lokuqala langempela phakathi kokudweba umbono nokubamba indandatho yensimbi eqediwe esandleni sakho. Sike sabuka abasaqalayo bevula la makhithi belindele umlingo, bese bephonsa phansi imodeli yabo yesithathu ye-wax ehlulekile ngo-2 ekuseni, bezibuza ukuthi kungani i-sprue iphuka, kungani isikhunta siqhekekile, noma kungani isiliva lenqaba ukugeleza. Lokho kukhungatheka kuphelela lapha. Lokhu akuwona umbono. Yilokho esikubonile kuyo yonke imijikelezo ye-prototype engu-47 enabafundi bedizayini yobucwebe, abathanda ukuzilibazisa, nabasunguli be-micro-studio—isikhathi ngasinye sicwengisa ibhalansi phakathi kokufinyeleleka nokwethembeka kwensimbi.
Kungani “Osaqalayo” Engasho “Ukuyekethisa”
A iqiniso ikhithi yokukhipha i-wax elahlekile kwabasanda kufika kumele baxazulule izinkinga ezintathu ezingaxoxiswana: ukumelana nokushaqeka okushisayo kutshalomali, ukuziphatha kokutubeka okubikezelwayo kwe-wax, nokuzinza kwe-dimensional ngokupholisa. Amakhithi amaningi aweqa amashidi edatha yezinto ezibonakalayo ngokuphelele—efaka ohlwini “utshalomali olusekelwe kupulasitela” ngaphandle kokucacisa ukuthotshelwa kwe-ASTM C22 noma ISO 6872. Okwethu kwenza. I-powder refractory ihlangabezana nokucaciswa kwe-ISO 6872 Uhlobo lwe-IV, olunamandla aluhlaza ≥12 MPa kanye nokwanda okushisayo ≤0.15% ku-700 ° C. Leyo nombolo ibalulekile: umehluko phakathi kwesikhala esihlanzekile kanye nesikhunta esisontekile esivalela amabhamuza omoya eduze nendawo ye-bezel.
Sihlole ukwakheka kwe-wax okuyisithupha eceleni. Amawakisi avamile amancane athambe ngaphansi kuka-45°C—akazinzi kakhulu ukuthi angafakwa imininingwane. Ikhithi isebenzisa inhlanganisela yobunikazi ne-58% yezinyosi, i-32% ye-carnauba, ne-10% ye-dammar resin-encibilika kakhulu ku-63 ° C, ibambe imigqa emihle ngaphansi kuka-0.3 mm, futhi ishisa ihlanzekile ku-650 ° C ngaphandle kwensalela ye-carbon. Uzobona lokhu uma uvula i-flask yakho yokuqala: akukho msizi omnyama onamathele endaweni eyisiliva, asikho isidingo sokukhetha okunolaka.
Yini Ngaphakathi—nokuthi Yini Engafihlwa Ekuphrinteni Okuhle
Leli akulona ibhokisi lezithembiso ezingacacile. Yonke ingxenye yenza umsebenzi oqinisekisiwe:
- Amathuluzi okubaza we-wax (iziqephu ezi-5): I-Carbide-tipped, hhayi insimbi engagqwali—ngoba amathiphu athambile ayawohloka ku-wax eqinile, okubangela izimpawu zokuxoxa eziphindaphindeka ekulindweni kwakho kokugcina.
- Impushana yokutshala imali (1 kg): Okuxutshwe ngaphambili, okuhlungwe ngaphambilini, umswakama okulawulwayo ukuya ku-±0.5% RH—akukho ukuqagela kokuhlanganisa izilinganiso; vele ungeze amanzi acwecwe ku-22°C
- I-vacuum flask (2L): Umzimba wengilazi ye-Borosilicate ene-silicone gasket elinganiselwe ku-90 kPa—ibalulekile ekukhipheni umoya ovaleleke kumafomu angenalutho ayinkimbinkimbi
- Iphrofayili yerempu yomlilo wokushisa: Umjikelezo wezigaba ezi-3 ohlelwe ngaphambilini (ukomisa → ukukhipha inwaxa → ukucwilisa) kufakazelwe ukuqeda ukuphuka kwengcindezi eshisayo kumaflask
- I-Crucible & tongs: I-silicon carbide-lined, ilinganiselwe i-1100 ° C - iphatha isiliva elihle kakhulu, ithusi, nethusi ngaphandle kokungcola kwensimbi
Akukho? "I-ingot yesiliva yokuqala." Kuhle. Isiliva elimsulwa lincibilika ku-961°C—kodwa abasaqalayo abavamile ukuthola amazinga okushisa angaphansi kuka-1050°C. Ngaphandle kwe-pyrometry eqondile, bathola i-porosity noma i-cold shuts. Esikhundleni salokho, ikhithi ifaka ama-ingots okuhlola ethusi alinganisiwe. I-Master fluidity kanye nesikhunta gcwalisa ngethusi kuqala. Bese ukhuphula.
I-Bottleneck Yangempela Ayilona Ikhono-Kuyinqubo Yokungafihli
Abanye bangase baphikise ngokuthi ukuphrinta kwe-3D yedijithali kwenza i-wax elahlekile ingasebenzi. Kodwa nakhu esikulinganise ekusetshenzisweni kwestudiyo kwangempela: Emasongweni angaphansi kukasayizi 8 anamaphrofayili angalinganisi, amaphethini eresin aphrintelwe nge-3D adinga ukufakwa kwe-post-cast okungaphezulu okungu-37% kune-wax eqoshwe ngesandla. Kungani? Imigqa yesendlalelo ye-resin engu-0.05 mm idala ama-micro-ridges abamba inhlanganisela yokupholisha, okuphoqa izikhathi ezinde zokubhuqa kanye nokulahleka kwensimbi okuphezulu.
Ukuqopha ngesandla kufundisa isilinganiso, ukusatshalaliswa kwesisindo, kanye nokuzwa kwesikhala okungekuhle—amakhono awekho ama-software esisiki aphindaphindayo. Futhi uma imodeli yokuqala ye-wax yomfundi iwa ngesikhathi sokutubeka, bafunda mayelana nezilinganiso zodonga lwe-wax-to-flask (ubuncane obungu-6 mm), hhayi nje ukuthi "phrinta." Leyo loop yempendulo ethintekayo ayinakuthathelwa indawo. Sakhe imanuwali yeziqondiso ngezindlela zokwehluleka—hhayi izinyathelo. Ikhasi 12 alisho ukuthi “namathisela i-sprue.” Ithi: “Uma umhluzi wakho ugqamukile ngesikhathi ugcwalisa iflaski, hlola izinga lokushisa le-wax (kufanele libe>>50°C) kanye nobubanzi be-sprue (≥2.5 mm ukuze uthole amasongo).”
Ukusuka Ebhodleleni Lokuqala Kuya Kubucwebe Obusebenzayo—Akukho Ukugcinwa Kwamasango
Lokhu ikhithi yokukhipha i-wax elahlekile ithatha isipiliyoni se-foundry eyiziro-kodwa ayizibekezeleli izinqamuleli. Kuhlanganisa i-hygrometer elinganiselwe ngoba umswakama ongaphezu kuka-60% RH ubangela ukubola kwe-investimenti ukuthi kumiswe ngokushesha kakhulu, kubambe umoya. Ihamba nge-dial caliper engu-0.01 mm—hhayi njengento yokunethezeka, kodwa ngenxa yokuthi ugqinsi lwe-shank yeringi ngaphansi kuka-1.2 mm luhluleka ukuhlola ukuqina ku-120 N. Lezo zinombolo azinasizathu. Ithathwe ku-ASTM F2590 (izindinganiso zokuqina kobucwebe) futhi yaqinisekiswa esikhungweni sethu esinesitifiketi se-ISO 9001 e-Qingdao—lapho senza khona izindlu zokupompa zezinsimbi zikawoyela zasogwini kusetshenziswa amakhemikhali afanayo okutshalwa kwezimali kanye nezimiso ze-vacuum.
Awuthengi ikhithi yokuzilibazisa. Ufinyelela isiyalo senqubo yezinga lezimboni, esehliswe ngaphandle kokuncishiswa. Amanozzles afanayo e-cobalt-alloy esiwashisela amasistimu asebenza ngogesi ancike ekulawuleni okufanayo kokushisa okushisayo, i-kinetics yokushiswa kwe-binder efanayo, i-mold integrity logic efanayo. Ukunemba akugciniwe ezinkontilekeni zesigidi samadola. Iqala lapho i-wax yakho ihlangabezana ne-investimenti.
Qala nge-wax. Hlonipha ijika lokutubeka. Themba i-vacuum. Faka iringi yakho yokuqala—hhayi njengokuprakthiza, kodwa njengobufakazi bokuthi ukulawula kuqala kudala ngaphambi kokuba insimbi igeleze.
