Wonke unjiniyela we-Foundry uyakwazi lokhu: impumelelo yokusakaza iqala kudala ngaphambi kokuthululwa. Iqala kwesokudla izinto zokuphonswa kwensimbi-hhayi nje izinto ezingavuthiwe, kodwa izibambi ezinembile, izibophezelo, ama-mold coatings, izihlabathi eziwumgogodla, nezingxenye zokuvala ezilawula ukugeleza kokushisa, ukuphela kwendawo, nokuphindaphinda kobukhulu. Sibone ukulingwa okuningi kwenani eliphezulu kwehluleka—hhayi ekwakhiweni okungalungile noma ukukhetha kwengxubevange, kodwa kusukela ekusabalaliseni okusanhlamvu kwesihlabathi okungahambisani, ikhemikhali yokuhlanganisa esiphelelwe yisikhathi, noma okokunamathisela okubhanqeza ngaphansi kokushisa okushisayo. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., lapho sikhiqiza khona izindlu zepompo ye-cobalt alloy AMS 5387 kanye nemibhobho esekelwe ku-T800 yamasistimu asebenza ku-hydraulic asebenza kubha engu-420, ukwethembeka akusona isifiso. Iklanyelwe kuzo zonke izinqumo zokuhlinzeka.
Izinto Eziphikisayo Ezimelana Nokucindezeleka Okushisayo Kwezwe Langempela
Akuwona wonke ama-refractories aziphatha ngendlela efanayo ngaphansi kokuhamba ngebhayisikili okushisayo okuphindaphindiwe. Isihlabathi se-silica sisebenzela insimbi ene-alloy ephansi—kodwa yehluleka ngendlela eyingozi kakhulu ngengxubevange ye-cobalt-nickel engaphezu kuka-1,400°C. Esiqandisini sethu esithobela i-ISO, sisebenzisa inhlanganisela ye-alumina ne-zircon ehlanganisiwe yokubumba amagobolondo okutshalwa kwezimali okwenza izingxenye ze-AMS 5387. Kungani? Ngoba i-coefficient ye-zircon yokwandisa okushisayo ifanelana nama-alloys e-cobalt eduze-ukunciphisa ukuqhekeka kwegobolondo ngesikhathi se-dewaxing nokushisa kuqala. I-silica-based coatings blister ngaphansi kokushisa okusheshayo; asekelwe ku-zircon abambe ubuqotho. Sihlola yonke inqwaba ngokusatshalaliswa kosayizi wezinhlayiyana (D50 ≤ 45 µm) nokuqukethwe komswakama (<0.3%) ngaphambi kokucwiliswa kwegobolondo. Ikhasimende elilodwa lishintshe abahlinzeki ngaphandle kokulungisa izilinganiso zerempu yokushisa ngaphambi kwesikhathi—futhi labona amagobolondo angu-22% echitheka emaqenjini aqalwe kuqala. Ukulungiswa kwakungeyona into entsha. Bekufanisa ukuziphatha okuphikisayo nephrofayili yabo yangempela yesithando somlilo.
Ama-Binder kanye nama-Core Systems Aletha Ukuzinza Kwe-Dimensional
I-Core shift ichitha izindlu zesilinda sephampu ye-piston. Ukuchezuka okungu-0.15 mm endaweni yebhore yangaphakathi kusho ukwehluleka ukusebenza. Sisebenzisa i-cold-box phenolic urethane binders—hhayi ngezindleko, kodwa ukuze sigcine amandla aluhlaza ku-35–40% womswakamo ohlobene nokusebenza okungaguquguquki kwe-shakeout. Idatha yethu ibonisa ama-cores enziwe ngalezi zibophezelo abamba ukubekezelela indawo okungu-±0.08 mm kuwo wonke amayunithi okukhiqiza angama-500. Ezinye izitolo zisathembele ezinhlelweni ze-furan ezingabhaki, kodwa izinsalela zazo zesibabule zikhuthaza i-micro-porosity ekufakweni kwensimbi engagqwali. Mayelana nokulingwa kwensimbi okudinga amandla e-Class 30+ aqinile, sicacisa ama-alkaline phenolic binders—i-low-sulphur, high-ash-strength, futhi ehambisana nemigqa yokudubula eyinhloko ezenzakalelayo. Ukhiye akulona uhlobo lwe-binder lodwa. Kuyindlela ama-kinetics okwelapha okuhlanganisayo aqondana ngayo nezinga lokushisa lebhokisi lakho eliyinhloko, umswakamo we-ambient, kanye nesikhathi sokudilizwa.
I-Mold Coatings nama-ejenti akhiphayo alawula ubuqotho obuphezulu
Indawo yokulingisa ayiyona into enhle—iyasebenza. Izisekelo zephampu zidinga i-Ra ≤ 3.2 µm yokuvala i-gasket; amarola e-winch center shaft adinga izindawo ezingenasici ukuze agweme ukuguga ngaphambi kwesikhathi. Sifaka ama-zircon ane-ethyl silicate-bonded zircon coatings ngesifutho esingenamoya—viscosity elawulwa ngamasekhondi angu-22–24 (Ford Cup #4), okuqukethwe okuqinile kokungu-68–70%. Mncane kakhulu? Ukumelana nokuguguleka okungekuhle. Kujiye kakhulu? Ukuqhekeka kanye ne-carbon pickup. Siqinisekisa ukujiya koqweqwe lwawo ngamageji e-eddy-current-target: 0.25–0.35 mm ifilimu eyomile. Ezingxenyeni ze-alloy ezingajwayelekile ze-T800, sengeza i-3-5% ye-colloidal graphite ukuze sithuthukise ukugeleza kwensimbi zibe izingxenye ezincane. Awekho ama-off-the-shelf enamathela "indawo yonke" eletha lokho. Ukwakhiwa, indlela yohlelo lokusebenza, nesikhathi sangemuva kokoma-kuhlolwe ndawonye, hhayi ngokuhlukaniswa.
Izinsiza Ezilungele Ukulandeleka Zokusakaza Okubalulekile Okubalulekile
Lapho i-valve yokucindezela ihluleka endaweni eningi kawoyela, ukulandeleka akuwona umsebenzi wamaphepha—kuwukunciphisa isibopho. Wonke umgqomo wesihlabathi se-zircon, ibhande ngalinye le-binder, iqoqo ngalinye le-coating slurry engena endaweni yethu inenombolo eningi, isitifiketi sokuhlaziya sabahlinzeki, kanye nombiko wokuhlolwa kwe-metallurgical. Sigcina ukulandeleka okugcwele kusukela ekwamukelweni kwempahla eluhlaza ngokuhlola kokugcina kwe-CMM—kwehle kuze kufike kunombolo yokushisa ye-cobalt alloy ingot ngayinye esetshenziswa ezingxenyeni ze-AMS 5387. Lokho kusho ukuthi uma ikhasimende libika i-porosity ngo-12 ezimpondweni endlini yesilinda, singakwazi ukuhlukanisa indawo yesihlabathi okuyiyonayona, inqwaba yokuhlanganisa, kanye nomjikelezo wediphu yokumboza—futhi sikhiqize kabusha isimo lapho sihlolwa. Abahlinzeki abaningi bathumela izinto zokwakha eziqinisekisiwe. Bambalwa abahlanganisa isitifiketi ekulawuleni inqubo yesikhathi sangempela. Senza kanjalo—ngoba ukunemba kobukhulu kanye nobuqotho besakhiwo akutholakali esithandweni esincibilikayo kuphela. Bavalelwe esigabeni sokuphakelwa.
Imiphumela ethembekile yokutholwa ayiveli engxenyeni eyodwa ephelele. Ziphuma ekukhetheni okuhlosiwe, okuhloliwe kwakho konke izinto zokuphonswa kwensimbi into ekuhambeni kwakho komsebenzi-kusuka kusayizi wokusanhlamvu ophikisayo kuya kumpilo yeshalofu ehlanganisayo ukuya ekunambeni kokugqama. Kwa-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., asiphathi izinto ezisetshenziswayo njengezinto ezisetshenziswayo, kodwa njengezinikezi ezinembayo. Lowo mcabango wehlukanisa ukusebenza okuphindaphindwayo nokubiza kabusha okubizayo. Njengoba izinqubo zokulingisa ezixubile zikhula zivame kakhulu—ikakhulukazi kumasistimu ephampu enengxubevange ephezulu namavalvu—umphetho wokuhlukahluka kokuthengwa kwempahla uyancipha. Khetha abahlinzeki abakalayo, abaqinisekisayo, nababhala phansi—hhayi nje ukuletha.
