AISI 8620 uruganda rwo gushora imari ntabwo ari interuro gusa-ni igipimo cyimikorere. Iyo gari ya moshi yawe igomba kurokoka 150.000 munsi yumutwaro wa 350 MPa hydraulic, cyangwa inzu yawe yohereza ibinyabiziga yihanganira ihungabana ryumuriro kuva kuri -40 ° C kugeza kuri + 180 ° C, guhitamo ibikoresho no kugenzura inzira bireka guhitamo. Bahinduka abadashyikirana. Icyuma cya AISI 8620 gitanga uburinganire bwiza: gukomera kwinshi kuva nikel-chromium-molybdenum ivanze, microstructure ifite ingano nziza nyuma ya carburizing, hamwe nuburemere budasanzwe - * niba * uburyo bwo guterana burinda ubusugire bwabwo. Aho niho abatanga isoko benshi bananiwe-atari mubuvuzi bwubushyuhe, ariko mbere: mubishushanyo mbonera, igishishwa gihamye, no kugenzura gukomera.
Impamvu AISI 8620 isaba gushora imari-Ntabwo ari umusenyi cyangwa gupfa
Gutera umucanga bizana intete zegeranye hafi yinkuta zibumba; gupfa guta ntibishobora gukemura AISI 8620 ahantu harehare cyane (1490 ° C) cyangwa ibyiyumvo byayo kumashanyarazi akonje vuba. Gushora imari bikemura byombi. Igikonoshwa cyacyo ceramic ituma buhoro buhoro, icyerekezo-gikomeye kugirango ugere ku burebure bumwe mugihe cya karburizasi. Twapimye kugera kuri 22% kunonosora murwego-rwibanze rwinzibacyuho gukomera gukomera gahoro gahoro hamwe n'umusenyi uteganijwe ku bikoresho bisa. Byumvikane neza: ubwikorezi bwumubumbe twahaye umukiriya wa Tier-1 EV ya moteri yerekanaga 0,08 mm ya drift nyuma yamasaha 500 yo kwipimisha byihuse - na mm 0.21 mubice byumucanga. Itandukaniro ntabwo ryari gutunganya. Nibikorwa bya microstructure.
Bane badashyikirana mu ruganda rwa AISI 8620
Ntabwo ibishingwe byose bifata AISI 8620 hamwe nuburemere buke. Dore itandukaniro ryubushobozi-bukomeye ubushobozi bwibicuruzwa:
- Ibikoresho byoroheje bikurikirana kugeza ubushyuhe—Nta guhuza ibice. Buri AISI 8620 ingot yemewe kuri ASTM A304, hamwe na raporo yuzuye yerekana amashusho ya Ni (0.4–0.7%), Cr (0.4–0,6%), na Mo (0.15–0.25%). Gutandukana hanze ± 0,03% bikurura karantine.
- Igikonoshwa cyumye protocole yahinduwe kugirango ikime, ntabwo ari igihe. Ubushuhe buri hejuru ya 45% RH mugihe cyo kwangiza bitera micro-porosity mu ntera ya 5-12 µm - ntibishobora kumenyekana na X-ray ariko ibiza bikabije. Amatanura yacu yinjira mugihe nyacyo RH nubushyuhe buri masegonda 90.
- Imbere ya carburizing kugabanya ububabare kuri 650 ° C mumasaha 4—Ntubishaka. Kutaruhuka gukina gushimangira ibikoresho byo kugoreka mugihe gikomeye. Turagenzura imihangayiko isigaye dukoresheje umwobo-gucukura umwobo wo gupima ku ngingo ya mbere.
- Igenzura rya CMM as-cast mbere yo gutunganya. Turagenzura guhamagarwa 12 GD&T guhamagarwa-harimo umwirondoro wubuso ku menyo yinyo yinyo no kwihanganira imyanya yubusabane-imbonankubone-murwego rwicyatsi-leta. Niba binaniwe hano, ntamafaranga yo gukosora CNC abika igice.
Aho Uruganda rusanzwe rutema inguni-nuburyo tutabikora
Inganda zimwe na zimwe za AISI 8620 zishora imari zisimbuka pre-alloy vacuum degassing, ukeka ko imyitozo ya EAF isanzwe ihagije. Ariko umwuka wa ogisijeni uri hejuru ya 20 ppm ukora imirongo ya oxyde itangira gutera amenyo y'ibikoresho. Dukoresha VIM + ESR gutunganya ibyogajuru byose hamwe nibinyabiziga bitwara-kugabanya O₂ kuri <8 ppm na sulfure kugeza <0.002%. Iyindi mikorere ihuriweho: ukoresheje ibishishwa rusange aho gukoresha zircon ishingiye kuri slurries yatezimbere ibyuma-binini cyane. Ibisanzwe muri rusange bigera kuri 1400 ° C, bigashyiramo ibintu byangiritse. Ibicuruzwa byacu bidahwitse birimo 12% bya silika bihujwe hamwe nogukwirakwiza ingano yagenzuwe na laser diffaction - buri cyiciro.
Abakiriya bakunze kubaza bati: “Urashobora gufata ± 0,025 mm kuri diameter ya mm 120 y'umuzingi?” Yego-ariko gusa niba ibikoresho byambaye ubusa nkubukuta bwurukuta rutandukanijwe ruguma muri ± 0.3 mm. Niyo mpamvu abashakashatsi bacu bakoresha ibikoresho bigana kwigana (ukoresheje MAGMASOFT®) * mbere yo kwemeza icyitegererezo. Dushushanya ikarita yumuriro hejuru yigiti cyose, hanyuma tugahindura amarembo kugirango dukureho ibibanza bishyushye. Igihembwe gishize, ibi byabujije ibikoresho 37 bishaje kurutonde rumwe rwo guteranya imvange.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD.: Icyitonderwa cyahimbwe mubikorwa
Bishingiye i Qingdao, QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ikora ikigo cyemewe na ISO 9001 aho AISI 8620 yo gushora imari itigunze-ihuriweho. Imashini ya CNC ibera mu igorofa imwe, hamwe na CMM isanganywe amakuru. Iyo ibikoresho byambaye ubusa bigeze bivuye muri casting, geometrie yacyo igaburira muburyo bwa porogaramu ya CNC indishyi y'ibikoresho-nta ntoki zinjira. Gahunda yo kuvura ubushyuhe ihujwe no guta nimero nyinshi muri MES yacu, bityo rero carburizing parameter auto-hindura ukurikije ibisubizo byikizamini cyambere cyakomotse kuri ubwo bushyuhe nyabwo.
Ntabwo tugurisha ibice. Turatanga ubushake bwo gukora. Ibyo bivuze kwemeza ibikoresho bya mesh hamwe na optique ya profilometrie mbere yo koherezwa. Bisobanura gutanga ibikoresho byuzuye, shell yubaka inyandiko, na micrografi nyuma yubushyuhe-nyuma yo kubisabwa. Bisobanura gufata ububiko bwa AISI 8620 master alloys kubatanga ibicuruzwa bitatu byemewe - bityo guhagarika amasoko ntibishobora kudindiza gahunda yawe ya prototype.
Uruganda rwa AISI 8620 rushora imari ntirwizera ikoresheje udutabo, ahubwo rusubirwamo: umwirondoro umwe mubice 500, ubuzima bwumunaniro umwe mumyaka itatu yumusaruro, ituze rimwe nyuma yubushyuhe bwa 10,000. Nibisanzwe QINGDAO QIANGSENYUAN TECHNOLOGY ihura-ntabwo rimwe na rimwe, ariko kuri gahunda. Kuberako mubikoresho bisobanutse hamwe na progaramu yimodoka, "funga bihagije" ntabwo ibaho. Gusa nibyo.
