Lokacin da injiniyoyi a Amurka suna buƙatar sassa na ƙarfe na madaidaici-musamman don tsarin injin ruwa, bawul ɗin mai da iskar gas, ko taron fafutuka masu nauyi-ba kasafai suke farawa da masana'antar simintin saka hannun jari na Amurka ba. Suna farawa da matsala: ɓangaren da ya kasa ƙarƙashin matsin lamba, sanye da sauri sosai, ko ba zai iya ɗaukar juriya na ± 0.005 ″ bayan maganin zafi ba.
A nan ne gaskiyar ta bambanta daga ƙasidu. Yawancin shagunan simintin saka hannun jari na cikin gida suna ƙarewa a matsakaicin-rikitaccen carbon karfe ko bakin karfe 316. Kadan ne ke rike da cobalt-nickel superalloys kamar AMS 5387 ko T800-grade abu. Kadan har yanzu suna haɗa simintin gyare-gyare, mashin ɗin CNC mai-axis, da dubawa mai yarda da GD&T a ƙarƙashin rufin daya-da kuma isar da ingantaccen lokacin jagora don samfuran samfuri da ayyukan samar da raka'a 200.
Me yasa "masana'antar simintin saka hannun jari na Amurka" galibi ya zama mataccen ƙarshen abubuwan da ke da mahimmancin manufa
Mun sake duba sama da 147 RFQs daga OEMs na Arewacin Amurka a cikin watanni 18 da suka gabata. Daidaitaccen tsari ya fito: 68% na ayyukan sun tsaya - ba akan farashi ko lokacin jagora ba - amma akan yuwuwar fasaha. Musamman:
- An ƙi AMS 5387 cobalt alloy nozzles saboda ƙananan porosity a cikin bangon simintin simintin da ya fi 4.5 mm
- Piston famfo Silinda gidaje gazawar hydrostatic gwajin bayan machining-jawo saura danniya
- Matsakaicin madaidaicin winch centre rollers yana yaƙe yayin warware matsalar saboda katangar ɗin ba ta da ikon gano ƙarfe na cikin gida.
Ƙaƙƙarfan kwalba ba buƙata ba ne. Yana da zurfin iyawa. Madaidaicin simintin saka hannun jari na gaskiya yana nufin sarrafa tsarin hatsi *kafin* yin injina — ba kawai bugun ƙira ba bayan. Wannan yana buƙatar ƙwaƙƙwaran ɗanyen kayan marmari, ginin harsashi mai amfani da injin, sarrafa tarkace, da bayanan bayanan tanderun da aka shiga kowane tsari-ba kowane motsi ba.
Abin da a zahiri ke aiki: Haɗin simintin gyaran kafa + sarrafa injina
Abokin ciniki ɗaya yana buƙatar juzu'in bawul ɗin matsa lamba 12 don mahaɗar ruwa na cikin teku. Spec: AMS 5387, 12 tashar jiragen ruwa na ciki tare da ± 0.003 ″ juriya na matsayi, ƙarewar ƙasa Ra ≤ 0.8 µm akan fuskokin rufewa, cikakkun takaddun kayan abu wanda za'a iya ganowa zuwa lambar narke.
Wani mai saka hannun jari na tushen Amurka ya nakalto makonni 14 kuma ya ƙi alhakin murdiya bayan simintin. An karɓi shago na biyu-amma yana buƙatar masu siyarwa daban 3 don yin simintin gyare-gyare, magani mai zafi, da CNC na ƙarshe, ba tare da firam ɗin GD&T da aka raba ba.
Maganin ya fito ne daga wurin da aka tabbatar da ISO 9001 a Qingdao, China: QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. Tsarin su ya kulle kwanciyar hankali da wuri:
- Raw cobalt-nickel ingots wanda aka samo shi kawai daga masu samar da takaddun shaida na EN 10204 3.1 - kuma an tabbatar da su ta hanyar duban OES bayan an karɓa.
- Bawoyin zuba jari da aka gina ta amfani da silica sol + zircon slurry, bushe a cikin ɗakunan da ke sarrafa zafi (45% RH, 22°C), sannan a harba a 1020°C tare da jiƙa na awa 2
- Simintin gyare-gyaren da aka zuba a ƙarƙashin bargon argon; Ana kula da ƙimar sanyaya ta hanyar saka ma'aunin zafi da sanyio a cikin kowane gungu mai ƙira
- Kowane simintin gyare-gyare an yi binciken 100% na rediyo kafin yin aiki mai tsauri-babu keɓe
Sakamako: Duk raka'a 12 sun wuce binciken labarin farko. Bayanan CMM sun nuna matsakaicin karkata na ± 0.0017″ akan wurin tashar jiragen ruwa. Lokacin jagora: 9 makonni. Babu sake yin aiki.
Ƙarfi guda huɗu waɗanda ba za a iya sasantawa ba don ƙaƙƙarfan simintin saka hannun jari
Idan aikace-aikacenku ya ƙunshi allunan cobalt, hatimi mai ƙarfi, ko lodin thermal cyclic, tabbatar da waɗannan maki huɗu-kafin sanya hannu kan PO:
- Neman kayan abu yana farawa daga narke-ba injin niƙa ba. Nemi rajistan ayyukan tanderu, rahotannin bincike na ladle, da kuma bayanan tabbatarwa na OES-ba kawai takaddun niƙa ba.
- Machining ba "bayan watsa labarai ba" - an tsara shi tare. Za su iya gudanar da tari-up na GD&T ta hanyar raguwar simintin gyare-gyare, murdiya-maganin zafi, da karkatar da hanyar kayan aiki? Idan amsar su ita ce "za mu gane shi," tafiya.
- Mutuncin saman yana da mahimmanci fiye da Ra. Don rufe saman, tambaya game da gano microcrack na karkashin kasa (misali, mai shiga tsakani + haɓakawa) kuma ko kammalawa ya haɗa da shigar da damuwa (misali, harbin peening zuwa ≥ 200 MPa).
- Binciken ƙarshe yana amfani da ma'aunin aiki-ba kawai CMM ba. Gidan piston dole ne ya hatimi a hannun rigar sa. Dole ne bututun ƙarfe ya gudana tsakanin ± 2% na ƙayyadaddun bayanai. Neman rahotannin gwaji tare da ingantacciyar duniya.
Wanene ya fi amfana daga wannan matakin haɗin kai?
Wannan ba don maƙallan kayayyaki ba ne ko maƙallan ƙarancin damuwa. Yana don abubuwan da aka gyara inda gazawa ke nufin raguwar lokaci, haɗarin aminci, ko rashin bin ka'idoji. Ƙungiyar injiniyarmu tana ganin mafi girman ROI ga abokan ciniki a cikin yanayi uku:
- OEMs suna sake fasalin simintin gado na gado zuwa madadin manyan abubuwan gami-alal misali, maye gurbin tushen famfon ƙarfe na ductile tare da nau'ikan tushen T800 don tsawaita rayuwar sabis a cikin mahalli masu lalata.
- Masu siyar da kayan bayan kasuwa suna buƙatar ainihin maye gurbin wasa-musamman don dakatarwar cobalt gami matosai ko nozzles ba tare da samfuran OEM ba (muna juye-injin injiniya daga samfuran jiki + nazarin sinadarai)
- Sabbin ƙungiyoyin haɓaka samfura waɗanda ke tabbatar da aikin-daidai-kafin yin kashe-kashe ko ƙirƙira kayan aiki-inda simintin saka hannun jari ke ba da saurin jujjuyawa akan farashi mai rahusa
Ee, cibiyar tana da hedikwata a Qingdao. Amma "masana'antar simintin zuba jari na Amurka" ba game da labarin ƙasa ba ne - game da saduwa da ƙa'idodin injiniya na Amurka, ƙimar matsa lamba ASME B16.34, da kuma bayanan sinadarai na ASTM A957 - ba tare da la'akari da lambar zip ba. Kowane jigilar kaya ya haɗa da cikakkun takaddun bayanai: takaddun shaida, sigogin kula da zafi, rahotannin CMM, da bayanan NDT. Kowane bita na zane ya ƙunshi ra'ayoyin ƙira - yana nuna yuwuwar canjin kauri na bango ko daftarin kusurwoyi waɗanda zasu iya kama ragowar yumbura.
Duba gaba: Iyaka ta gaba ba manyan tanderu bane ko sauri CNCs. Yana da tsarin tsarin rufaffiyar-inda zubar da bayanan raguwar ke ciyarwa kai tsaye zuwa diyya ta hanyar kayan aiki, kuma hoton zafi yayin warware matsalar yana daidaita lokacin jiƙa a ainihin lokacin. FASSARAR QINGDAO QIANGSENYUAN ta riga ta fara gudanar da layukan matuki tare da wannan gine-gine. Ba a matsayin ra'ayi ba. Kamar yadda aikin yau da kullun.
Idan aikin ku na gaba yana buƙatar tabbaci mai girma-ba kawai bege mai girma ba-fara da abin da ɓangaren ke buƙata, ba inda aka yi shi ba. Daidaitawa bai damu da iyakoki ba. Yana amsa horo.
