Lokacin da injiniyoyi suka bayyana a masana'anta simintin gyaran kafa don daidaitattun sassan ƙarfe, ba kawai suna yin odar ƙarfe ba - suna yin fare akan kwanciyar hankali a ƙarƙashin nauyin hydraulic 300-bar, amincin microstructure bayan maganin zafi, da rashin haƙuri ga porosity a cikin nozzles na cobalt gami. Mun ga ayyukan da yawa da aka jinkirta - ba ta hanyar ƙira ba, amma ta hanyar rashin daidaituwa na iyawar ginin: simintin yashi da aka aika zuwa shagunan ba tare da iznin narke ISO 9001 ba, ko saka hannun jarin da aka yi amfani da shi akan injinan axis 3-axis waɗanda ba za su iya ɗaukar ± 0.015 mm akan tashoshin bawul na ciki.
Me yasa "Madaidaicin Casting" Ba Wa'adin Talla ba ne kawai
Ana fara yin simintin gyare-gyare na gaskiya kafin zubowar farko. Yana nufin zaɓin ɗanyen abu tare da ƙwararrun rahotannin gwajin niƙa-ba kawai sunaye ba-da kuma tabbatar da sinadarai na alloy *kafin* narkewa. A wurinmu a Qingdao, kowane rukunin AMS 5387 cobalt alloy batch yana yin nazarin yanayin yanayi lokacin isowa. Mun ƙi abu idan chromium ya karkata da fiye da 0.2% daga ƙayyadaddun bayanai - ko da takardar shaidar mai siyarwa ta ce "ya dace." Me yasa? Saboda mun auna yadda canjin 0.2% ya canza rarrabawar carbide a cikin gidajen piston famfo na Silinda, yana tasiri kai tsaye ga lalacewa a cikin aikace-aikacen mai da iskar gas.
Wannan horo yana haɓaka ta hanyar sarrafa tsari: ƙimar sanyaya mai sarrafawa a cikin ƙirar yashi don hana damuwa saura a cikin tushe mai kauri na 400-mm; vacuum-taimaka zuba jari harsashi don T800 gami nozzles don kawar da oxide inclusions; CNC machining nan da nan bayan annashuwa-taimakawa damuwa-ba a taɓa sanyaya iska ba-don adana juzu'i mai maimaitawa a cikin sassa 500.
Ƙarfi huɗu waɗanda A Haƙiƙa suke Matsar Allura
Yawancin masu samar da kayayyaki suna lissafin "CNC + simintin gyare-gyare" azaman ayyuka daban-daban. Kadan ne ke haɗa su sosai don tabbatar da aikin aiki. Ga abin da ke aiki a aikace:
- Cobalt-nickel superalloy Mastery: Ba kawai machining AMS 5387-amma tsinkaya yanayin haɓaka yanayin zafi yayin saitin ayyuka da yawa. Muna injin cobalt gami matosai tare da tsangwama masu dacewa da buƙatar 0.008 mm latsa-fit yarda, sa'an nan kuma inganta fit-bayan-zafi-bi ta amfani da ainihin-lokaci thermal kwaikwayo na dukan tsari sarkar.
- Haɗin kai tsaye tare da manufa: Layin simintin yashi namu yana ciyarwa kai tsaye cikin tantanin halitta CNC. Babu dabaru tsakanin kayan aiki. Babu sake gyarawa. Motar injiniya mai nauyin kilogiram 120 tana fitowa daga koren yashi mai yashi zuwa saman ƙasa na ƙarshe a cikin sa'o'i 72-tare da tabbacin CMM a matakai uku masu mahimmanci: simintin simintin, bayan roughing, da bayan kammalawa.
- GD&T da ke tafiyar da masana'antu: Ba kawai muna karanta zane-zane ba - muna yi musu tambayoyi. Lokacin da abokin ciniki ya ƙayyadad da juriyar matsayi na Ø0.05 mm akan raƙuman tashar jiragen ruwa guda huɗu, muna yin kwatankwacin motsin datum a kan raguwar simintin gyare-gyare da jujjuyawar mashin ɗin. Idan hadarin ya wuce 15%, muna ba da alama * kafin * kayan aiki - ajiyar makonni da farashin samfur.
- Binciken da ke ba da shaida, ba takarda ba: Kowane bawul ɗin matsa lamba yana ɗaukar lambar QR mai haɗawa zuwa cikakken tarihinsa: ID narke, jefa kuri'a, log ɗin zagayowar zafi, tambura rahoton CMM, har ma da sa hannu na ma'aikaci akan duban gani na ƙarshe. Ba "mai yarda ba" - an tabbatar.
Kudin Boye na Abokan Kafa na ''Mai Kyau''
Wasu masu siye suna ba da fifiko ga ƙarancin rahusa fiye da ƙaƙƙarfan tsari. Mun fahimci dalilin da ya sa-har sai sun fuskanci gazawar filin. Ɗaya daga cikin OEM na'ura mai aiki da karfin ruwa na Arewacin Amurka ya karɓi ƙarancin ƙima na 12% daga wani masana'anta simintin gyaran kafa. Sakamakon? 23% mafi girman ƙimar juzu'i akan gidajen silinda saboda raguwar ƙasa da ba a gano ba. Sake injina ya kasa dawo da daidaiton kaurin bango. An ƙaddamar da lokacin jagora da makonni 11. Jimlar farashin ƙasa ya tashi 37%.
Sabanin haka, abokan cinikin da suka sa mu da wuri-lokacin bita na zane-duba sakamako daban-daban. Ga mai kera famfo na Turai, mun gano cewa za a iya samun madaidaicin taper akan ɓangaren famfo na AMS 5387 ta hanyar simintin saka hannun jari na kusan-net maimakon cikakken cire hannun jari na CNC. Ajiye kayan aiki: 64%. An rage lokacin aikin injin daga 18.2 zuwa 4.7 hours a kowane bangare. An ƙaddamar da amincewar labarin farko a rana ta 1.
Abin Da Yake Bukatar Aiki A Yau—da Gobe
Daidaito ba a tsaye ba. Kamar yadda masu aikin mai da iskar gas ke tura famfunan ruwa zuwa psi 10,000 da winches na teku suna aiki a -40°C, halayen kayan suna canzawa. Mayar da hankalinmu na R&D baya kan manyan injuna - yana kan haɗakarwa sosai tsakanin simintin ƙarfe da joometry bayan aiwatarwa. A halin yanzu, muna inganta matakan matasan: simintin saka hannun jari wanda ke biye da taimakon Laser-taimaka maƙarƙashiya na wuraren zama na bawul, sannan a gama niƙa tare da sa ido kan ƙarfin aiki don gano micro-chatter kafin ƙarancin saman ya wuce Ra 0.4 µm.
Idan aikinku na gaba yana buƙatar sassan da gazawar ke nufin raguwa, haɗarin aminci, ko rashin bin ka'ida-zabi abokin tarayya wanda ma'anar "daidaitacce" ke rayuwa a cikin bayanan, ba ƙasidar ba. Zabi a masana'anta simintin gyaran kafa wanda ke ɗaukar kowane simintin gyare-gyare kamar mahimmin ɓangaren manufa-saboda a cikin tsarin na'ura mai aiki da karfin ruwa, motocin injiniyoyi, da famfo na musamman, shi ne.
