Xa iinjineli zicacisa i-Stellite 21 yokugqoka okuphezulu, izihlalo zevalve eziphezulu zokushisa okanye i-nozzles yepompo, abakhethi nje izinto eziphathekayo-babheja ngokuzinza kwe-dimensional, ukuhambelana kwe-microstructural, kunye nokunyamezela kwe-batch-to-batch. Yiyo loo nto ukukhangela kwinyani I-Stellite 21 inxalenye yomzi-mveliso ibaluleke kakhulu kunangaphambili. Ayiyiyo yonke ivenkile echanekileyo enokusingatha le cobalt-chromium-tungsten alloy: ubunzima bayo obugqithisileyo (48-55 HRC as-cast), ukuthambekela kokuqina komsebenzi, kunye novelwano kwimbali ye-thermal kufuna ngaphezu koomatshini be-CNC kunye neengxelo zokuhlola. Ifuna inkqubo eqinisekisiweyo yoluleko-ukuphosa ngapha nangapha, unyango lobushushu, i-multi-axis machining, kunye nokuqinisekiswa okuhambelana ne-GD&T.
Kutheni iStellite 21 Isilela kwizandla ezingalunganga-kwaye iphumelele apho ibalulekileyo
Siye sayibona kabini kwiinyanga ezili-18 ezidlulileyo: i-OEM yaseMntla yaseMelika i-hydraulic OEM ifumene izindlu zempompo ze-Stellite 21 zepiston ezinama-microcracks omphezulu emva kokusila kokugqibela. Unobangela weengcambu? Umthengisi usebenzise izikhewu zesanti ngaphandle kokuvala isisombululo, emva koko watyhala isondlo esinamandla ngexesha lokujika. Isiphumo sasingekho nje i-scrap-yayikukumiswa kwemveliso yeeveki ezintathu kunye ne-$ 220K ngexesha lokuphumla. I-Stellite 21 "ayenziwe njengentsimbi engenasici." I-thermal conductivity yayo yi-1/3 ye-316 engenasici. Amandla okusika anyuka ngokungalindelekanga. Ubomi besixhobo behla ngama-60% ukuba ukuqukuqela kwesipholisi okanye isixhobo sejometri sitenxa nge-5°. Impumelelo iqala ngaphambi kokuba i-chip yokuqala ibhabha-ngesitifiketi sezinto eziphathekayo (i-AMS 5387 okanye i-ASTM F75), isakhiwo sengqolowa eqinisekisiweyo, kunye nemijikelezo ebhaliweyo ye-homogenization.
Izakhono ezine eziNgaxoxisaniyo zeReal Stellite 21 iCandelo loMzi-mveliso
Umzi-mveliso weStellite 21 wokwenyani awamkeli nje imizobo. Iyabagocagoca—yandule ke ihambise iinxalenye ezisebenzayo, ingekuko nje ukuphumelela uhlolo. Nantsi into esiyiqinisekisayo kwisakhiwo ngasinye:
- Isiqinisekiso sokulandelelwa kwesitokhwe ekrwada: Yonke indawo yokushisa ithwala i-certs ye-mill epheleleyo-kuquka umxholo we-cobalt (≥53%), i-chromium (27-31%), i-tungsten (14-16%), kunye nekhabhoni (≤0.25%). Akukho kutshintshwa “kwibakala elilinganayo”.
- Ukusalwa kokuqinisa okulawulwayo: Ukwenziwa kotyalo-mali kwimilomo ebhityileyo eludongeni; i-centrifugal casting kwiiplagi zecylindrical. Zombini zifuna i-mold preheat echanekileyo (i-1100-1200 ° C) kunye namazinga okupholisa alawulwayo ukuphepha ukuhlukaniswa kwe-carbide.
- Ukudityaniswa konyango lobushushu: Isisombululo se-annealing kwi-1175 ° C ± 10 ° C kwiiyure ze-2, kulandelwa ukupholisa umoya-kungekhona ukupholisa kwesithando somlilo-ukuvala i-uniform austenitic matrix phambi komatshini.
- Ukuqina-mapped post-machining ukuqinisekiswa: Asivavanyi nje indawo enye. Uvavanyo lwe-Rockwell olukhokelwa yi-CMM kwiindawo ze-9 kwicandelo ngalinye liqinisekisa ukuba ubunzima buhlala ngaphakathi kwe-48-52 HRC-akukho bangaphandle ngaphezu kwe-55 HRC (umngcipheko we-brittle) okanye ngaphantsi kwe-46 HRC (ukungaphumeleli kokugqoka).
Apho Iivenkile Ezisemgangathweni Zimisa khona—Apha Kulapho Uchaneka luqala khona
Uninzi lwababoneleli baphatha iStellite 21 "njengenye ialloy engaqhelekanga." Kodwa ukusilela kwehlabathi lokwenyani kwenzeka kumdibaniso: phakathi kokuphoswa kokuncipha kunye nokuphambuka komatshini, phakathi kokuphazamiseka kwe-thermal kunye nee-callouts ze-GD&T, phakathi kokugqitywa komphezulu kunye nokutshintsha kolwelo. Umzekelo, izindlu zethu ze-AMS 5387 Stellite 21 pump cylinder zingena kwi-3D optical scanning *phambi* kunye *emva* kwe-stress-relief annealing-kuba ne-0.008 mm yoxinzelelo olushiyekileyo itshintshile yazala ukugxila ngaphaya kwemida ye-ISO 2768-mK. Sisebenza ngomatshini zonke iindawo zokutywina ezibalulekileyo ezinedayimane ezijikiweyo (Ra ≤0.4 µm), emva koko siqinisekise ngeprofilometry-hayi iitshekhi ezibonakalayo. Kwaye ewe-sibambe yonke ibhetshi ngokuchasene ne-ASTM E112 yobungakanani beenkozo (i-ASTM 5 ubuncinci), kuba iinkozo ezirhabaxa zikhawulezisa ukugalela phantsi koxinzelelo lwebhayisikile.
Ukusuka kuMzobo ukuya kuHambiso: Eyona nto uyifumanayo
Ukuba iprojekthi yakho idinga i-Stellite 21 components-nozzles, izihlalo zevalve, i-shaft rollers yeziko, iiplagi eziqhelekileyo-ufuna ngaphezu kweengcaphuno. Udinga impendulo yokwenziwa kwangoko. Sifaka imingcipheko emngciphekweni phambi kokuba kuqale isixhobo: ubukhulu bodonga obungaphantsi kwe-2.5 mm kulwakhiwo lotyalo-mali, ii-engile eziyidrafti ezingaphantsi kwe-1.5 °, okanye ukunyamezela kwe-GD&T kuqina kune-±0.015 mm kwindawo eqinileyo. Ukuhamba kwethu okubhityileyo kuxhasa iprototype ebalekayo (embalwa njengeziqwenga ze-3) kunye nengxelo epheleleyo ye-FAI, emva koko isikali esicocekileyo siye kwi-500+ iiyunithi / ngenyanga ngaphandle kokufaneleka. Ixesha lokukhokhela? Iiveki ze-12-16 zokukhutshwa kwenqaku lokuqala, kuquka i-NDT (UT + PT). Iiodolo zoomatshini kuphela zithunyelwa kwiiveki ezi-6-8. Onke amalungu enqanawa anokulandeleka ngokupheleleyo: inombolo yobushushu, iqashiso lokuphosa, ilog yomjikelo wokuphatha ubushushu, ingxelo yeCMM, kunye nemephu yobulukhuni.
I-Stellite 21 ayikho malunga neendleko-imalunga nesiphumo. Iplagi engaphumeleliyo kwi-oyile ye-offshore kunye ne-gas manifold ayilobango lewaranti. Sisiganeko sokhuseleko. I-winch shaft elibazisiweyo yemoto yobunjineli ayisosilayidi seshedyuli. Yithenda ephosiweyo. Ukukhetha okulungileyo I-Stellite 21 inxalenye yomzi-mveliso kuthetha ukukhetha amaqabane aphatha i-metallurgy njengobunjineli-hayi ukuthenga. Ngubani oqondayo ukuba ukuchaneka akulinganiswa kwii-microns zodwa, kodwa ekusebenzeni okuphindaphindiweyo kumawaka emijikelezo yoxinzelelo. Ayisosithembiso eso. Yisiseko.
