Xa iinjineli zichaza 420 steel stainless izinto ezinxitywayo eziphezulu, ezikwaziyo ukumelana nokudleka—njengemizimba yevalvu esebenza ngoxinzelelo loxinzelelo olukhulu, iishafti zempompo, okanye iirola zeziko le-winch—zifuna okungakumbi kunokuthobela nje izinto eziphathekayo. Bafuna a 420 umzi-mveliso wensimbi engenasici oqondayo ukuba unyango lobushushu bubuchaphazela njani ubulukhuni, indlela iiparamitha zomatshini ezichaphazela ngayo ingqibelelo yomphezulu, kwaye kutheni uzinzo lwedimensional phantsi kwebhayisekile eshushu ibaluleke ngaphezu kokuqina kwekhathalogu yodwa.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. uye wasebenza ngoomatshini, waphathwa ngobushushu, kwaye wahlola ngaphezulu kwe-12,000 yesiko le-420 yamacandelo ensimbi engenasici ukusukela ngo-2018-ubukhulu becala kwimpompo ye-oyile yaseMntla Melika kunye ne-European hydraulic system integrators. Sizibonele ngokwethu indlela ukungahambelani kwe-annealing kukhokelela ekuqhekekeni kancinci ngexesha lokusila kokugqibela. Silungise ii-callouts ze-GD & T ezithatha i-isotropic shrinkage-kodwa i-420 SS castings ayiziphathi ngolo hlobo emva kokucima. Kwaye siye saphinda salungisa imizobo apho "ukugqiba isibuko" kuchazwe ngaphandle kokuchaza imida yeRa-kuphela ukufumana inxalenye engaphumelelanga kuvavanyo lwesitshizi setyuwa kwiiyure ze-96 ngenxa yoxinzelelo lwe-subsurface.
Yingakho ukuthembeka kuqala ixesha elide ngaphambi kokuba i-chip yokuqala ihambe. Inkqubo yethu iqala ngeebhilidi zensimbi ezingenasici eziqinisekisiweyo ezingama-420-ezilandelwayo kwiingxelo zovavanyo lokugaya intlanganiso ye-ASTM A276 kunye ne-AMS 5630. Siqinisekisa umxholo wekhabhoni (0.15-0.20%), i-chromium (12.0-14.0%), kunye nobunzima kwimeko edibeneyo (≤200 HB) ngaphambi kokusika i-HB. Akukho bhetshi ingena kwimveliso ngaphandle kwe-spectroscopy yeekhemikhali epheleleyo kunye nokuqinisekiswa kwe-macro-etch. Ngoba? Ngenxa yokuba i-0.03% ye-carbon deviation itshintsha i-martensite iqala ubushushu nge-18 ° C-kwaye loo nto itshintsha yonke into ngokuqina.
Indawo yethu ehambelana ne-ISO ilawula ukuhamba komsebenzi okupheleleyo: ukuchaneka kwe-CNC ukujika kunye nokugaya (kubandakanya i-multi-axis contouring ye-valve port complex), i-vacuum okanye i-controlled-atmosphere ukuqina (ukuya kwi-52-56 HRC), ukuzinza kwe-cryogenic, kunye ne-fine-grit polishing okanye i-electropolishing kwiindawo zokutywinwa ezibalulekileyo. Sidibanisa unyango lokushisa ngokuthe ngqo kwiprogram ye-NC-akukho bathengisi bangaphandle, akukho handoffs, akukho zithuba zokulandelela. Xa umthengi efuna i-54±1 HRC kwi-32-mm ye-piston rod egxalabeni, silinganisa ubulukhuni kwiindawo ezintathu ze-radial * kunye * nobunzulu-iprofayile-hayi nje kumphezulu. Oko akunakuxoxisana kumacandelo asebenza kwi-3,000 psi kunye neemfuno ze-150,000 zomjikelezo wokudinwa.
- Akukho sitokhwe singekho kwishelufu: Yonke iodolo yentsimbi engama-420 icutshungulwa ukusuka kwizinto eziqinisekisiweyo ezikrwada-hayi izilaphu ezinyibilikisiweyo okanye ukungenisa ngaphandle kwesiqinisekiso
- Akukho ngqikelelo yedimensional: Zonke iimpawu ezibalulekileyo eziqinisekisiweyo kusetyenziswa ii-CMM zeZeiss zilinganiswe kwimigangatho enokulandeleka ye-NIST; I-GD&T itolikwe ngokupheleleyo, hayi nje ukulinganisa
- Akukho ukugqiba okungaboniyo: Uburhabaxa bomphezulu (Ra, Rz, Rpk) buqinisekisiwe nge-ASME B46.1-ngaphambi nangemva kokudlula-ukuqinisekisa ukuxhathisa kwe-corrosion
- Akukho kusilela kwenqaku elinye: Ukulandelwa kweqashiso eligcweleyo-ukusuka kwinombolo yobushushu ukuya kwi-ID yomsebenzisi ukuya kwisitampu sokuhlola-ifakwe kwi-ERP yethu
Abanye banokuthi ukuphosa i-420 yensimbi engenasici ayinakwenzeka ngenxa yengozi eshushu yokuqhekeka. Siyavuma-ukuba usebenzisa isanti egayiweyo ngesango eliqhelekileyo. Kodwa utyalo-mali lwethu lwezindlu ezingama-420 ze-SS zeziseko zempompo ezingaphantsi kwamanzi zisebenza ngokungenasiphako kwinkonzo yamanzi olwandle kuba silawula indlela yokuqina, sisebenzisa iqokobhe le-ceramic lokubumba ngezibophelelo ze-silica ephantsi, kwaye sisebenzise i-preheat gradients enciphisa ukothuka kwe-thermal ngama-40%. Ayingomlingo. Luqeqesho lwe-metallurgical oluxhaswa yiminyaka eyi-11 yamava e-cobalt-alloy-apho ulawulo lwe-thermal lukwenza okanye ukuphuka.
Siyazi nokuba yeyiphi i-420 yentsimbi *engenzi kakuhle * kwaye siya kukuxelela kwangaphambili. Ayizu kuhambelana ne-316 SS ekuchaseni i-chloride pitting. Ayifanelekanga ukuba sesichengeni esiqhubekayo ngaphezu kwe-600 ° F. Kwaye ukuba uyilo lwakho lufuna ubunzulu, umsonto obhityileyo wodonga kwindawo eqinileyo, siya kucebisa isicwangciso sokugaya intambo yokugalela emva kobushushu endaweni yokuleqa iimpompo ezaphuka kwi-48 HRC. Ukungafihli akungomgaqo-nkqubo apha. Lucoceko lobunjineli.
Kubathengi ababeka ii-odolo zenqaku lokuqala, ukuphononongwa kwethu kobunjineli kubandakanya impendulo yokwenziwa kwamahhala: ukuchonga ukunyuka koxinzelelo kwiinguqu ze-fillet, ukuqinisekiswa kokuqina kwamacandelo> i-25 mm, kunye neendawo zokubeka iflegi apho i-electropolishing inokuphakamisa i-oxides yomhlaba endaweni yokuyisusa. Siye sanqanda ukuhlaziywa kwezixhobo ze-23 kwiinyanga ze-18 ezidlulileyo-kungekhona ngokuthi "ewe," kodwa ngokubonisa ngqo apho umngcipheko uhlala khona.
Ukuba ukhangela 420 umzi-mveliso wensimbi engenasici amaqabane amacandelo abalulekileyo kwimishini, ajonge ngaphaya kweziqinisekiso. Buza ukuba ziqinisekisa njani iiprofayili zobunzulu bobunzima. Buza iisampulu zemicrographs zamacandelo anqamlezileyo. Buza ukuba baphatha njani i-lot-to-lot umahluko kwi-chromium carbide precipitation. Emva koko thelekisa iimpendulo.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakhela ixesha elide-hayi nje imihla yokuhanjiswa. Ingqwalasela yethu elandelayo: ukwandisa amandla e-AMS 5630-ehambelana ne-420 SS yezindlu ze-actuator ye-aerospace kunye nokuphuhlisa ukuhamba komsebenzi we-hybrid casting-machining okunciphisa ixesha lokukhokela ngama-35% ngaphandle kokuncama ulawulo lwesakhiwo senkozo. Izinto eziphathekayo azitshintshanga. Kodwa siyithatha nzulu kangakanani indlela yokuziphatha-yiloo nto eyenza umthengisi ahluke.
