Lokacin da injiniyoyi suka ƙididdige sassan simintin yashi don manifolds na na'ura mai aiki da karfin ruwa, famfo gidaje, ko jikunan bawul masu matsa lamba, ba kawai suna buƙatar sifofin ƙarfe ba - suna buƙatar kwanciyar hankali a ƙarƙashin hawan keken zafi, daidaiton microstructural bayan machining, da maimaita tsari-zuwa-tsari a cikin ƙarfi da taurin ƙarfi. Wannan shine dalilin da ya sa aka samo asali daga a yashi simintin sassa factory tare da haɗaɗɗen sarrafa ƙarfe-ba kawai ƙarfin ganowa ba-ba za a iya sasantawa ba.
Me yasa "Yin Casting kawai" bai isa ba kuma
Mun ga ayyuka da yawa sun tsaya cak a gwajin matsi na farko. Wani abokin ciniki a Texas ya ba da umarnin gidaje 42 piston famfo silinda-simintin ƙarfe, ASTM A48 Class 35, GD&T kira mai ƙarfi zuwa ± 0.05 mm. Wanda ya fara kawo kaya akan lokaci. Amma gidaje guda uku sun fashe yayin tabbatarwar hydrostatic a 3,000 psi. Tushen dalili? Ƙididdigar nodule na graphite mara daidaituwa a cikin narkar da, ba a gano shi ba saboda tabbatar da kayan da ke shigowa ya tsaya a tsarin sinadarai-ba aikin ƙarfe ba.
Wannan ita ce tazarar da ke tsakanin kafa da a yashi simintin sassa factory gina don aikace-aikace masu mahimmancin manufa. AMINCI na gaskiya yana farawa kafin a cika mold: ƙwararrun albarkatun albarkatun ƙasa, sa ido kan yanayin wutar lantarki na ainihi, da ka'idojin kula da zafi na bayan-zuba masu daidaitawa tare da AMS 2750. Yana ci gaba ta hanyar mashin ɗin CNC inda filayen simintin gyare-gyaren ke saduwa da juzu'ai na aiki-kuma ya ƙare ne kawai bayan CMM-tabbatar da daidaitawar sifofin injin zuwa as-cast datum.
Ƙarfi huɗu waɗanda A Haƙiƙa suke Matsar Allura
Dangane da shekaru 12 na haɗin kai kai tsaye tare da OEMs a duk faɗin mai & iskar gas, na'urorin lantarki ta hannu, da sassan famfo na masana'antu, mun gano abin da ke raba masu samar da kayayyaki daga masu ciniki:
- Ƙwararren Tsari na MusammanCobalt-nickel alloys kamar AMS 5387 ko T800 ba "kawai wuya ga inji." Ƙarfin zafin su shine 1/5 na bakin karfe. Dole ne a kera ƙirar yashi don sannu a hankali, ƙarin sanyaya iri-ko kuma ku sami raguwar tsaka-tsaki wanda ya lalata ya haifar da nutsuwa. Muna daidaita matsin lamba, ma'aunin ɗaure, da ƙirar gating ga dangin gami-ba kowane lambar sashi ba.
- Girman Gudanar da Hannun hannu: Kera gidan simintin yashi ba aikin ragi bane. Yana da adana fasali. Muna amfani da na'urar daukar hotan takardu don yin taswirar juzu'in simintin simintin gyaran fuska kafin daidaitawa-sannan hanyoyin kayan aikin shirye-shirye waɗanda ke kiyaye mafi ƙarancin kaurin bango a cikin yankuna masu tsananin damuwa, koda kuwa yana nufin daidaita izinin haja ta 0.3 mm a gida.
- Batch-Level Metallurgical Accountability: Kowane zafi yana ɗaukar cikakken rahoto: Binciken OES, Girman hatsi a kowace ASTM E112, taswirar tauri a fadin kauri na sashe, kuma - idan an ƙayyade - Gwajin tasirin Charpy a -40 ° C. Babu “masu ƙima.” Babu "kowace matsakaicin matsakaici." Bayanan da za a iya ganowa kawai an ɗaure zuwa lamba mai zafi, zub da kwanan wata, da gano ma'anar simintin.
- Ƙirar GD&T Ba-Sallanta: Lokacin da zane ya yi kira ga jurewar matsayi na Ø0.1 mm don ramukan ƙugiya guda shida dangane da simintin datum surface, muna tabbatar da cewa shimfidar wuri * kafin * hakowa — ba bayan haka ba. Muna amfani da faranti na granite tare da alamun bugun kira wanda aka daidaita zuwa ISO 7083, ba masu sa ido na laser suna bin joometry na ƙima ba.
Abin da Abokan ciniki ke Tambayi Ainihin—Kuma Abin da Suke Bukata
"Za ku iya jefa wannan a cikin ductile iron?" da wuya tambaya ta farko ce ta dace. Ƙarin amfani: "Shin wannan lissafi zai ciyar da tsabta a 2.5 kg/sec ba tare da tashin hankali-induced oxide fina-finai?" Ko: "Shin tsarin yashin ku yana riƙe 150 µm saman gamawa akan fuskoki a tsaye ba tare da niƙa na biyu ba?"
Muna jin maki zafi guda uku masu maimaita-da kuma yadda suke tsara aikin mu:
- "Lokacin jagoranmu ya shuɗe saboda yin wasan kwaikwayo bai dace da na'urar injin ɗin ba." → Mun haɗu da tabbatar da kusurwoyi na simintin gyare-gyare, fillet radii, da wuraren mai gano wuri tare da mai tsara shirye-shiryen ku na CNC-kafin ƙirar ƙira ta fara.
- "Mun sami guda 12 - 7 kawai sun wuce binciken karshe." → Matsalolin mu na cikin aiki sun haɗa da gwajin ultrasonic akan duk sassan> 50 mm lokacin farin ciki, da duban abubuwan maganadisu akan yankuna masu tsananin damuwa-ba kawai QA na ƙarshe ba.
- "Sashin maye ya ƙare sau biyu da sauri kamar na asali." → Muna yin la'akari da sifofi tare da bayanan bayanan microhardness a cikin sashin. Sau da yawa, batun ba shine darajar kayan abu ba - rarrabuwar carbide ce ta gida daga sanyaya mara daidaituwa.
Ayyukan Duniya na Gaskiya, Ba Ƙirar Rubuce-rubuce ba
A bara, motar injiniya ta Turai OEM tana buƙatar rollers shaft na cibiyar winch don cranes-aiki. Spec: EN-GJS-600-3 ductile iron, -40°C tasiri makamashi ≥12 J, taurin saman 240-270 HBW, babu porosity karkashin kasa a cikin 3 mm na OD. An nakalto masu kaya biyu. Ɗayan ya ba da ƙananan farashi. Sauran — QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD — samar da narke rajistan ayyukan, sanyaya kwana kwaikwaiyo, da wani samfurin part tare da etched microstructure nuna uniform ferrite-pearlite rarraba.
Jigilar farko ta ci kowane gwaji. Duk guda 96. Bayarwa: Kwanaki 11 gabanin jadawalin. Me yasa? Domin aikin simintin yashi bai keɓanta da tsarin kula da zafi ba—ko kuma daga aiki na ƙarshe. Ya kasance jerin sarrafawa guda ɗaya.
Wannan shine ma'anar a yashi simintin sassa factory gina don dogara-ba girma ba.
