Lapho onjiniyela becacisa a i-valve seat factory, abagcini ngoku-oda ingxenye—bathola ukuzinza kobukhulu ngaphansi kwebha engu-350, ukumelana nokugqoka ngemva kwemijikelezo engu-10,000, nokuvumelana kwensimbi kuwo wonke amayunithi angu-500. Sibone amaphrojekthi amaningi efa ngenxa yokuthi isihlalo sawohloka ngesikhathi sokushiswa kwamabhayisikili, noma i-micro-porosity ibangele ukuvuza ngaphambi kwesikhathi kuma-hydraulic manifolds. Yingakho ukunemba kungesona isimangalo sokumaketha-kuyisidingo esincane sokungena.
Kungani “I-Valve Seat Factory” Kuyitemu Lokusesha Elidukisayo—Futhi Okudingayo Empeleni
Abathengi abaningi bathayipha “imboni yezihlalo ze-valve” ku-Google belindele ukukhiqizwa kokhiye wokujika. Kodwa ekusebenzeni, impumelelo incike emandleni amathathu okungaxoxiswana ngawo: ubuciko bezinto ezibonakalayo, ukwethembeka kwejometri, kanye nokulandeleka kwenqubo. Uzakwethu weqiniso kufanele aphathe i-AMS 5387 cobalt alloy—hhayi nje ukuyishintsha ngomshini, kodwa ayiphonse ngesikhala esilawulwayo se-dendritic, abese ethwala indawo yokuvala ibe ngu-±0.005 mm TIR kuyilapho elondoloza ingcindezi eyinsalela ecindezelayo. Silethe izihlalo zamavalvu ezingaphezu kuka-12,000 zamaphampu e-piston anomfutho ophezulu kusukela ngo-2019. Iqoqo ngalinye liphethe ukulandeleka okuphelele kwenkatho yokushisa, i-CMM ibika ngamadayamitha abalulekile, kanye nokuqinisekiswa kokuqina kwendawo ku-Ra ≤ 0.4 µm ebusweni obuvaliwe.
Amaqiniso Amane Obuchwepheshe Abahlinzeki abaningi Ngeke Bazidalule
Okokuqala, ama-alloys e-cobalt-nickel afuna ukuhamba komsebenzi okuhlanganisiwe kokusakazwa kwemishini. Izihlalo zesanti zivame ukudinga u-40% wokususwa kwesitoko—okuningi kakhulu emigwaqweni yamathuluzi evamile. Sisebenzisa ukufakwa kwe-carbide ngokwezifiso okunamakhompiyutha e-PVD TiAlN namazinga okuphakelayo aguqukayo ehla ukusuka ku-120 mm/min ukuya ku-35 mm/min lapho weqa indawo ethinteke ukushisa eduze nobuso besihlalo.
Okwesibili, ukuhumusha kwe-GD&T kuthinta ngqo umsebenzi. Isihlalo esicaciswe nge-Ø0.015 mm ukubekezelela isikhundla ngokuhlobene nebhore yomshayeli? Lokho kudinga ukuqondanisa okungaphakathi kwenqubo—hhayi ukuhlolwa kwangemva kokuqeda. Siqinisekisa ubudlelwano be-datum ngaphambi kokwelashwa kokushisa kokugcina, hhayi ngemva kwalokho.
Okwesithathu, ubuqotho bangaphandle buhambisana nobulukhuni bodwa. Sikala amagrediyezi okuqina okuncane ebusweni besihlalo (HV300–HV420) futhi senza ukuhlola kwe-fluorescent penetrant kuzo zonke izindawo—hhayi amasampula kuphela—ukuze sibambe ukungaqhubeki kobuso obungaphansi komhlaba obungabonakali ku-CMM.
Okwesine, ukuqinisekiswa kwezinto akusho lutho ngaphandle kokubambisana nabahlinzeki. Sihlanganisa ama-billet specs aluhlaza nomphakeli wethu we-cobalt alloy eJalimane, sigunyaza ukubika usayizi wokusanhlamvu we-ASTM E112 kanye nokuqinisekisa ukumelana nokugqwala kwe-intergranular nge-ASTM G28A ngayinye.
Yini Ehlukanisa Umkhiqizi Wesihlalo Se-valve Enembile
Akukhona ngokuba nemishini ye-CNC. Kumayelana nokulawula okwenzeka phakathi kwabo:
- Ukulawula ukusakaza: Ukutshala izimali kumajiyometri ayinkimbinkimbi (isb., amaphiko okupholisa ahlanganisiwe), ukufakwa kwesihlabathi kwezihlalo ezinobubanzi obukhulu—kokubili ngokuqapha okushisayo kwesikhathi sangempela ngesikhathi sokuqinisa
- Isiyalo somshini: Ukuqedwa kwe-Multi-axis kokuvala okucijile kusetshenziswa amatafula ajikelezayo anokuphindwaphindwa kwe-±1 arc-second, hhayi nje ukugaya okungu-3-eksisi
- Ukuhlanganiswa kokwelashwa kokushisa: Ukunciphisa ukucindezeleka ku-950 ° C nge-argon backfill, okulandelwa ukupholisa okulawulwayo ku-15 ° C / ihora ukuvimbela ukwakheka kwesigaba se-sigma kuma-cobalt alloys
- Iqedela ukuqinisekiswa: Imephu ye-topography yendawo nge-interferometry yokukhanya okumhlophe-hhayi nje ukudlula kwe-profilometer-ukuqinisekisa isilinganiso sendawo (ijika le-Abbott) ihlangabezana nezimfuneko zophawu lwe-hydraulic
Senqaba u-6.2% wamabhilidi we-cobalt alloy angenayo ngokusekelwe ekuhlolweni kwe-ultrasonic kuphela. Lokho akukona ukumosha-lokho kuvimbela ukwehluleka kwenkambu.
Ukukhetha Uzakwethu Wesihlalo Se-Valve: Amasheke Asebenza Kathathu
Ngaphambi kokusayina i-NDA, cela lokhu—bese uyaqinisekisa:
- Cela imibiko emithathu yokugcina ye-CMM yejometri yesihlalo esifanayo. Qhathanisa okwangempela ngokumelene negama ebusweni obuvaliwe, ububanzi bomshayeli, kanye ne-backface perpendicularity. Uma babelana ngedatha yesifinyezo kuphela, hamba.
- Buza ukwakheka kombiko wabo wokuhlolwa kwezinto (MTR).. Ukulandelelwa kwangempela kusho izixhumanisi zokushisa ngakunye nokuhlaziywa kwamakhemikhali, imiphumela eqinile, nezithombe zesakhiwo esincane—hhayi nje inombolo yesitifiketi.
- Buyekeza isitatimende sabo sekhono le-GD&T. Ingabe ziqinisekisa ukubekezelelana kwezikhundla ezihlanganisiwe? Bangakwazi ukubamba iphrofayili yendawo engaphakathi kuka-0.008 mm ngaphesheya kwe-arc engu-120°? Uma impendulo yabo ibandakanya "sizozama," abakaze bakwenze ngaphambili.
I-QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. isebenza ngale ndlela nsuku zonke—hhayi njengokuhlukile, kodwa njengenqubo evamile. Indawo yabo ethobela i-ISO e-Qingdao iphatha yonke into kusukela ku-AMS 5387 cobalt alloy nozzles kuya ezisekelweni zephampu yensimbi engagqwali, enamaphepha aphelele asuka kuresidi yezinto ezingavuthiwe ngokusebenzisa ukuhlolwa kokugcina kwengcindezi yokusebenza.
Umcabango Wokugcina: Ukunemba Kukalwa Ekugwemeni Ukwehluleka
Isihlalo sevalvu esivuza kubha engu-200 asibizi u-$87 ezilahliwe. Kubiza u- $ 12,000 ngesikhathi sokuphumula ukuze uthole umshini wokumba ogwini. Kubiza u-$220,000 ezimangalweni zewaranti zeqoqo lezimoto zobunjiniyela. Kubiza isithunzi—lapho umsebenzisi wokugcina wekhasimende lakho esola *umkhiqizo wakho* ngokwehluleka.
Ilungelo i-valve seat factory iqeda lezo ziguquguqukayo ngaphambi kokuthi i-chip yokuqala indize. Abagcini nje ngokuhlangabeza ama-specs-balindele ukuthi ukunwetshwa okushisayo, isando esiwuketshezi, nokulayisha umjikelezo kuzosebenzisana kanjani ne-geometry kanye ne-microstructure yabo. Lokho akukona ukukhiqiza. Lokho ukudlulisa ubungozi-kwenziwe kahle.
