Lokacin da injiniyoyi suka bayyana iska saita yashi simintin don daidaitattun sassan ƙarfe, ba su zaɓi hanyar gado ba - suna zaɓar ingantaccen tsari, ingantaccen tsari don abubuwan da dole ne su tsira daga matsanancin matsin lamba, hawan keke na zafi, da lalacewa. Ba kamar koren yashi ko tsarin guduro na gasa ba, simintin simintin yashi na iska ya dogara da danshi na yanayi da zafin jiki na yanayi don warkar da mai ɗaure-ba tanda, babu mai kara kuzari, babu iskar tilas. Wannan saukin abin rufe fuska na fasaha na gaske: samun ± 0.15 mm juriya akan mahalli na cobalt alloy famfo 300-mm ba game da "amfani da yashi kawai ba." Yana da game da sarrafa sinadarai masu ɗaure, mold compaction repeatability, core geometry riƙe yayin shakeout, da daidaita girman juzu'i bayan yin aikin injina.
Mun jefa sama da 12,000 AMS 5387 cobalt alloy nozzles a cikin shekaru uku da suka gabata-kowanne tare da kaurin bango a ƙarƙashin 4.2 mm da hanyoyin kwarara na ciki waɗanda ke buƙatar tabbatar da CMM GD&T yarda. A cikin kowane tsari, tsarin saitin iska yana isar da ƙananan damuwa fiye da sauran hanyoyin haɗin gwiwar resin, yana rage murdiya bayan mashin ɗin da kashi 37% akan gidajen silinda na piston famfo. Wannan ba ka'idar ba ce. An auna shi akan injin ɗin mu mai daidaitawa na Zeiss CONTURA G2, shiga kowane sashi, wanda za'a iya gano shi zuwa lambobin zafin ɗanyen abu da ID ɗin ƙira.
Me yasa wannan ya shafi? Saboda simintin yashi na iska ba koma baya ba — dabara ce mai ba da dama ga ma'auni mai mahimmancin manufa inda daidaiton ƙirar ƙirar ƙirar microstructure da tsinkayar ƙira ya fi ƙarfin saurin gudu. Yi la'akari da jikin bawul ɗin matsa lamba na hydraulic: wanda aka ƙera shi daga ƙarfe mai ƙarfi, zai buƙaci sa'o'i 18 na milling na axis da yawa kuma ya haifar da 62% sharar gida. Cast ta hanyar saitin yashi na iska, siffar kusa-taron ya zo tare da kashi 92% na ƙarancin taro na ƙarshe, ƙarancin ƙarancin ciki (ASTM E155 Level 2), da tazarar dendritic iri ɗaya wanda aka tabbatar ta sashin giciye na ƙarfe. Sakamakon? Ƙananan farashi, ɗan gajeren lokacin jagora, kuma-mahimmanci-mafi kyawun juriya ga gajiya a matsa lamba sama da mashaya 420.
- Amincin abu: Saitin iska (yawanci sodium silicate + CO₂ activator ko tsarin ester na halitta) suna gabatar da karbo carbon mara kyau. Wannan yana adana tsattsauran tagogin sinadarai da ake buƙata don T800 cobalt-based alloys-inda ko da 0.03% wuce haddi na carbon yana lalata taurin zafi.
- Mold kwanciyar hankali: Babu exothermic dauki yana nufin babu thermal girgiza ga mold a lokacin zuba. Kullum muna zuba 1100°C narkakkar cobalt-nickel a cikin gyare-gyaren da aka yi a 22-28°C na yanayi-babu blister, babu jijiya sama.
- Matsakaicin daidaito: Ƙwararren ƙwayar cuta abu ne mai tsinkaya kuma mai layi. Akan abin hawa injin winch center shaft rollers (OD 215 mm, tsawon 480 mm), muna riƙe zagaye tsakanin 0.08 mm a tsakanin raka'a 100-ba tare da rage damuwa na biyu ba.
Wasu na iya yin gardama cewa yashi mai saita iska ba shi da cikar simintin zuba jari. Gaskiya ne - amma rashin ƙarfi na Ra 6.3 µm ya isa don aikin mating saman akan tushen famfo da manifolds bawul. Inda ƙare al'amura, muna haɗa daidaitattun CNC juya *bayan * simintin gyare-gyare-ba a da ba. Wannan jeri yana nisantar karkatar da mashin ɗin daga saura damuwa. Muna kuma guje wa tarkon gama gari na ƙarfin dauri mai ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙarfi: yawancin sodium silicate yana ƙara ƙurawar ƙura da babban haɗarin karyewa yayin sarrafawa. Mafi kyawun tsarin mu yana amfani da mai ɗaure 3.8% ta nauyi, warkewar mintuna 45 a 55% RH-wanda aka tabbatar a cikin yanayi uku a cikin yanayin zafi na Qingdao.
Abubuwan da aka bayar na QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., mu iska kafa yashi simintin factory yana aiki azaman kulli ɗaya a cikin madaidaicin aiki guda biyu-ba keɓantacce ba. Lokacin da abokin ciniki ya ƙaddamar da zane don filogi na cobalt wanda ba daidai ba, tsarinmu yana farawa da bita na ƙarfe: Shin AMS 5387 daidai ne-ko kuma za a canza T800 zai ba da mafi kyawun juriya a sabis na ruwan gishiri? Sa'an nan kuma ya zo da simintin ƙirar ƙira: Shin tsarin gating zai ciyar da sashin sirara kafin fata ta daskare? Sai kawai mu gina alamu, haɗa yashi, da zuba. Kowane mataki yana ciyar da bayanan baya cikin madaidaicin madaidaicin ingancin ISO 9001-takaddun shaida na kayan aiki, sandunan tensile da aka gwada ta ASTM A781, binciken ultrasonic da aka yi akan duk bangon> 25 mm lokacin farin ciki.
Wannan haɗin kai yana ba da abin da masu siye ke buƙata a zahiri: sassan da suka dace, aiki, da ƙarshe-ba kawai sassan da ke jigilar kaya ba. Don kayan aikin filayen mai na Arewacin Amurka OEMs, wannan yana nufin bawul ɗin matsa lamba suna tsira da hawan keke 12,000 a 350°F ba tare da yabo ba. Ga masu ginin abin hawa na Turai, yana nufin winch shaft rollers suna kula da hankali bayan awanni 500 na hawan keke. Ga masu tara famfo na kudu maso gabashin Asiya, yana nufin gidajen silinda da ke isowa tare da injinan datum a cikin ± 0.05 mm — shirye don taron ƙarshe, ba sake yin aiki ba.
Idan kuna kimanta masu samar da simintin gyaran gyare-gyare, yi tambayoyi uku: Shin za su iya nuna rahotannin CMM don takamaiman lissafin ku-ba samfuran gama-gari ba? Shin suna sarrafa haɗawar ɗaure, gyaran gyare-gyare, da sigogin shakeout a ainihin lokacin-ko dogara ga ƙwarewar ma'aikaci kaɗai? Kuma suna danganta bayanan tsarin simintin zuwa aikin sashin ƙarshe na amfani da filin? A wurinmu, amsar duka ukun eh—kuma an rubuta su a kowane rikodin samarwa. Ba a samun daidaito a cibiyar injina. Yana farawa a cikin yashi.
