Bari mu kasance masu gaskiya, lokacin da yawancin mutane suka ji 'simintin saka hannun jari na sararin samaniya', suna ɗaukar hoto mara aibi, kusa da siffar injin turbin da ke fitowa kai tsaye daga fim ɗin sci-fi. Gaskiyar ita ce mafi muni, mafi juzu'i, kuma a zahiri, mafi ban sha'awa. Ba wai kawai yin hadaddun siffofi ba ne; game da sarrafa sarkar masu canji ne daga kakin zuma zuwa magani mai zafi, inda karkacewar 0.1mm ba kididdiga ba ce, wani yanki ne da aka goge. Yawancin tallace-tallacen tallace-tallace suna haskakawa a kan abin da ke ciki.
The Core Illusion: Complexity vs. Consistency
Babban kuskuren fahimta shine daidaita hadaddun geometric tare da koli na sana'a. Tabbas, za mu iya jefa tashoshi masu sanyaya na ciki waɗanda ba za su yuwu a iya na'ura ba. Babban kalubalen, duk da haka, shine yin shi a karo na 10,000 tare da daidaiton ƙarfe iri ɗaya kamar na farko. Na ga kyawawan simintin gyare-gyare na labarin farko waɗanda ba za a taɓa yin ƙima ba. Fasaha tana cikin sarrafa tsari, ba kawai samfurin CAD ba. Don wani sashi kamar injin turbine, da simintin zuba jari na sararin samaniya An zaɓi tsari ba kawai don siffa ba, amma don tsarin hatsi mai sarrafawa yana iya samar da ƙarfafawar bayan jagora.
Wannan shi ne inda shekarun da suka gabata na gwaninta bene na kanti ya zama ba za'a iya sasantawa ba. Kamfanin kamar Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) yana da fiye da shekaru 30 a cikin simintin gyare-gyare da machining ba layin tallace-tallace ba ne kawai. Yana fassara zuwa ga ilimi mai zurfi kan yadda takamaiman gami da tushen nickel, in ji Inconel 718, ke nuna halayen harsashi de-waxing a cikin takamaiman yanayin su. Wannan shine ilimin tacit ba za ku iya saukewa ba. Hankalinsu ga duka biyun zuba jari kuma cikakken CNC machining karkashin rufin daya yana da mahimmanci. Yana nufin injiniyan da aka kafa yana zana ƙirar kakin zuma tare da mashin ɗin injinan a zuciya, yana guje wa yanayin mafarki mai ban tsoro daga baya.
Ina tunawa da wani aiki don madaidaicin tsari, gami da magnesium-zirconium gami. Geometry ya kasance mai sauƙi, amma ƙayyadaddun ƙayyadaddun da ake kira don ƙa'idodin bincike na ultrasonic yawanci ana keɓe don titanium. Batun gazawar ba ita ce simintin gyare-gyaren ba, amma ragowar harsashi da ke haifar da maki farawa a ƙarƙashin ƙasa yayin gwajin gajiya. Ya ɗauki nau'i nau'i uku na tsarin ɗaure da dabarun aikace-aikacen stucco - cikakkun bayanai ba a taɓa cikin littafin ba - don fashe shi. Wannan shine rashin sexy 90% na aikin.
Material Alchemy: Ba Karfe Ne Kawai ba
Da yake magana game da kayan, kalmar alloys na musamman ana jefawa a hankali. A cikin sararin samaniya, shine bambanci tsakanin darajar bakin karfe don bututun ruwa da gami da tushen cobalt kamar MAR-M 247 don bututun injin turbine mai matsa lamba. Dabbobi daban-daban ne gaba ɗaya. Ƙarshen yana buƙatar madaidaicin zafin zafin jikin yumbura kafin a zuba don hana zafin zafi da fashewar bala'i. Yi kuskure, kuma kun yi asarar mako guda da ƙaramin arziki na ƙarfe.
Kewayon kayan QSY da aka jera-daga simintin ƙarfe zuwa gami da tushen nickel-yana faɗa. Yana nuna iyawar tsaye, amma ainihin gwajin yana cikin rarrabuwa. Ba kwa zuba baƙin ƙarfe da Hastelloy X a cikin bay ɗaya, tare da ƙungiya ɗaya, ta amfani da ƙa'idodi iri ɗaya. Girke-girke shine kisa shiru. Gaskiyar da suka jera su yana nuna keɓantaccen layi, sadaukarwa ko tsauraran hanyoyin tsaftacewa, wanda shine babban aikin sama da ƙasa. Don gaskiya simintin zuba jari na sararin samaniya maroki, layin nickel da cobalt alloys shine inda ainihin farashi da ƙwarewa ke zaune.
Mun koyi wannan hanya mai wuya tun da wuri. Ƙoƙarin gudanar da wani nau'i na 17-4PH bakin karfe (hazo-hardening) sassa dama bayan aikin karfen carbon. Alamar carbon a cikin yanayin tanderun, ko wataƙila an haɗa shi a cikin mai ɗaukar nauyi, ya canza yanayin hazo yayin tsufa. Sassan sun wuce gwaje-gwajen juzu'i amma sun kasa taurin kai da tasirin gwaje-gwaje a cikin cancanta. Darasi mai tsada a cikin kayan gida.
Wasan Shell: Inda ake yawan cin nasara ko asara
Shell mold simintin gyaran kafa shine tushe na zahiri. Yawancin suna tunanin shi a matsayin mold kawai. Kayan aikin yumbu mai aiki ne wanda aka ƙera don haɓakawa, kwanciyar hankali na zafi, da rashin aikin sinadarai. Yawan yadudduka, slurry danko, stucco size size da abu (fused silica vs. zircon), da bushewa yanayi-kowane mataki yana ƙara m. Don abubuwan haɗin sararin samaniya mai sirara, harsashi dole ne ya kasance mai ƙarfi don sarrafa narkakkar ƙarfe amma yana da rauni sosai don cirewa ba tare da fashewar fashewar ba wanda ke yin taurare saman.
Na shafe kwanaki tare da masu kaya suna tweaking na farko gashi slurry girke-girke don sabon aluminum-silicon gami. Manufar ita ce cikakkiyar jikewa akan ƙirar kakin zuma don ɗaukar kowane daki-daki, ba tare da haɗa kumfa na iska waɗanda suka zama tabo a saman ba. Yana da hannu-kan, kusan tactile tsari. Kuna yin hukunci akan ƙimar drip, kauri ta hanyar ji da gogewa. A nan ne ilimin kabilanci na aiki da aka daɗe yana da kima. Kuna iya samun hanyarsu ta wannan haɗin gwiwar tsari daki-daki akan shafin aikin su a https://www.tsingtaocnc.com.
Rikici na kowa shine wuce gona da iri na harsashi. Yadudduka da yawa, yayi kauri sosai, kuma kuna ƙirƙirar dumbin zafin rana wanda ke canza gaba mai ƙarfi, yana haifar da raguwar porosity a cikin sassa masu mahimmanci. Wani lokaci, maganin shine mafi ƙaranci, harsashi mai jujjuyawa tare da dabarun yumbu don tallafi. Ayyukan daidaitawa tsakanin injiniyoyi da kaddarorin thermal.
Daga Casting zuwa Bangaren: Musafin Hannun Injin
Wannan ita ce mafi yawan tsattsauran ra'ayi masu fafutuka. Kuna isar da ingantaccen simintin gyare-gyare, kawai don shagon injin ya yi korafin babu datum don matsawa, ko ragowar alawus ɗin hannun jari bai yi daidai ba, yana haifar da zazzagewar kayan aiki. Gidan da aka haɗa kamar QSY, wanda ke yin duka biyun zuba jari kuma Injin CNC, yana da babbar fa'ida. An tsara tsarin azaman ci gaba ɗaya.
An ƙera ƙirar kakin zuma tare da na'urar da aka yi amfani da su a zuciya. Ana sanya tsarin gating ba kawai don kwararar ƙarfe na sauti ba har ma don barin kayan a wuraren da suka zama kayan aikin injina daga baya. Wannan haɗin gwiwa yana yanke lokacin gubar kuma yana rage haɗarin karkatar da daidaitaccen simintin gyare-gyare yayin aikin injiniya na sakandare. Na ga sassan da aka bar saman simintin simintin gyare-gyare a kan bayanan martaba, yayin da kawai aka yi amfani da fuskokin mating, duk an tsara su daga rana ɗaya.
Misali mai amfani: gidan firikwensin da aka yi daga bakin karfe mai duplex. Simintin gyare-gyaren ya haɗa da haɗe-haɗe flanges. Saboda ƙungiyar injinan sun shiga cikin bita na kayan aiki na farko, sun ƙayyadad da ƙara ƙaramin haja akan fuskokin flange amma sun tabbatar da ramukan da aka jefar da aka hako su zuwa girman matukin jirgi. Wannan ya kawar da aikin EDM mai tsada daga baya. Wannan shine nau'in ceton farashi wanda ke zuwa daga masana'anta hade, ba kawai fitar da kayayyaki ba.
Rashin gazawa azaman Aikin Tilastawa
Ba ku gane da gaske ba simintin zuba jari na sararin samaniya har sai kun jagoranci wani babban taron tarkace. A farkon sa hannu na tare da aikin bawul ɗin gas mai zafi, muna da jerin fashe-fashe masu ban mamaki a yankin da zafi ya shafa na gyare-gyaren walda. Jigon simintin gyare-gyaren cobalt ne. Mun zargi mai walda, hanya, komai. Binciken ƙarfe a ƙarshe ya nuna baya ga tsarin simintin: ƙananan hazo na carbide a iyakokin hatsi daga ɗan sanyi-sannu sosai bayan zubowa. Yin simintin gyare-gyaren ya wuce X-ray, amma zagayowar yanayin zafi na walda ya ƙara tabarbarewa.
Gyaran baya cikin walda; ya kasance a cikin tace yarjejeniyar sanyaya bayan zuba a cikin tanderun. Wannan gogewar ta tsara dukkan ra'ayi na. Yanzu, na kalli simintin gyare-gyare kuma nan da nan na yi tunani game da tarihin zafinsa, ba kawai lissafin sa ba. Yana tilasta ka ka yi la'akari da dukan sarkar darajar, falsafar da ke da alama tana cikin tsarin mai ba da sabis, inda aka gina ikon sarrafa dukkan tsari daga narkewa zuwa ɓangaren injin da aka gina a cikin ƙirar su, kamar yadda aka gani tare da haɗin kai tsaye na QSY.
Wadannan gazawar, yayin da suke da zafi, sune ainihin tushen zurfin. Suna motsa sana'a daga girke-girke zuwa zurfin fahimta. Lokaci na gaba da kuka riƙe daidaitaccen simintin gyare-gyare, ku tuna ba siffa ba ce kawai. Rikodin daskararre ne na yanke shawara dari da aka sarrafa, kuma mai yiwuwa ƴan kura-kurai da suka gabata waɗanda aka koya daga su. Shi ke raba sashe da wani bangaren.
