Lokacin da injiniyoyi suka bayyana injin ƙarfe simintin gyare-gyare don bawuloli na hydraulic, famfo gidaje, ko shafts, ba wai kawai yin odar wani sashi ba ne - suna aiwatar da kwanciyar hankali a ƙarƙashin matsin lamba 350-bar, amincin microstructural bayan hawan keken zafi, da ƙarewar saman da ke tsayayya da lalacewa a cikin rafukan mai mai yashi. Mun ga ayyuka da yawa sun tsaya tsayin daka lokacin da masu kaya suka ɗauki simintin ƙarfe azaman tsari na kayayyaki—sannan a kashe injina zuwa wani shago na ɓangare na uku tare da fassarar GD&T da ba ta dace ba, bayanan jiyya na zafi mara daidaituwa, ko kuma ba a gano ga ASTM A48 Class 350 kayan batches.
Me yasa Maƙerin Ƙarfe Ya Fassara—Kuma Abin da Ake Yi Aiki
Yin simintin ƙarfe kaɗai baya bada garantin aiki. Gilashin graphite na baƙin ƙarfe yana ba da damping amma yana rage ƙarfin ƙarfi; ductile iron's spheroidal graphite yana inganta tauri amma yana buƙatar daidaitaccen sarrafa nodularization yayin zuba. Ƙara mashin ɗin CNC-kuma kuna gabatar da sabbin hanyoyin gazawa: saura murgudawar damuwa daga sanyi mara kyau, alamomin magana akan ɓangarorin silinda mai katanga, ko ƙarancin ƙarfi waɗanda ke haifar da lalacewa na kayan aikin da bai kai ga ƙarshe ba.
Mun taɓa sake yin ɗimbin gidaje na famfo na piston saboda ginin da aka yi amfani da shi da aka kwato ba tare da tantancewa ba. Sakamakon bambancin silicon ya canza taurin daga 220-240 HB zuwa 265 HB a cikin yankuna da ke cikin gida - ya isa ya karkatar da 0.012 mm yayin gama gajiya. Shi ya sa muke gwada kowane narke tare da bincike na OES * kafin * zubowa — da kuma tabbatar da taurin simintin a wurare uku a kowace simintin, ba guda ɗaya ba.
Nasarar ainihin duniya ta dogara ne akan haɗin kai tsaye. Kafa, shagon inji, da metrology dole ne su raba log ɗin tarihin zafi guda ɗaya, shirin CMM ɗaya, takaddun kayan abu ɗaya. Babu handoffs. Babu zato game da alawus-alawus na injinan “misali”. Lokacin da abokin ciniki ya aiko mana da AMS 5387 cobalt alloy toshe zane tare da ± 0.005 mm matsayi haƙuri akan ramukan dowel shida, muna ba da amsa a cikin sa'o'i 48 - ba tare da fa'ida ba, amma tare da rahoton masana'anta wanda ke nuna inda EDM hakowa ta doke hakowa, inda damuwa-saukarwa kafin roughing yana hana hazo ovality, da kuma yadda muke yin amfani da iska mai ƙarfi na NTbea. sandal.
Hudu Marasa Tattaunawa don Ƙarfe Mai Muhimmanci
- Abubuwan gano abubuwa har zuwa lambar zafi-ba wai kawai certs na niƙa ba, amma cikakkun rahotannin OES, sandunan gwajin tensile da aka adana a kowace kuri'a, da kuma hotunan microstructure da aka tabbatar da ASTM E112
- Machining bayan danniya taimako- muna riƙe da simintin gyare-gyare a 550 ° C na tsawon sa'o'i 4, sannan mu yi sanyi a ≤30 ° C / awa kafin fara cirewar karfe
- GD&T-tsarin dubawa na farko-CMM na yau da kullun da aka gina daga zane-zane na abokin ciniki, ba samfura na yau da kullun ba; fasali na datum da aka fara binciken farko, saman aiki na ƙarshe
- Tabbatar da ingancin saman-ba kawai ƙimar Ra ba, amma gano farar fata ta hanyar SEM/EDS don mahimman fuskokin rufewa da aka fallasa ga sabis na H2S
Inda Adadin Masu Kayayyakin Kayayyakin Suke Faɗuwa (Kuma Yadda ake Hange Shi)
Wasu dillalai suna tallata “madaidaicin simintin ƙarfe na ƙarfe” amma fitar da simintin simintin zuwa guraben arha mai rahusa ba tare da ikon sarrafawa na ISO 9001: 2015 Sashe na 8.5.2 don samfuran da ba su dace ba. Wasu kuma suna amfani da shirye-shiryen CNC na yau da kullun waɗanda ke ɗaukar izinin haja iri ɗaya - yin watsi da yadda bambance-bambancen simintin yashi ke shafar kaurin bango a cikin hadaddun geometries kamar injinan abin hawa winch center shaft rollers.
Mun kama wannan gibin yayin bincike na baya-bayan nan: wani mai gasa ya nakalto jikin bawul mai matsa lamba tare da mafi ƙarancin kauri na bango 12-mm - amma zanen su ya nuna ba da izini na 8-mm kawai. A aikace, kashi 30% na sassan suna buƙatar gina walda kafin a fara aikin injin. Wannan ba daidai ba ne. Wannan hasashe ne da aka canza azaman iyawa.
Tambayi mai kawo muku waɗannan tambayoyin kafin fitar da POs:
- Za a iya nuna mani narke guda uku na ƙarshe na ASTM A ductile iron?
- Menene madaidaicin halal ɗin ku tsakanin simintin simintin simintin gyare-gyare da nauyin injin ƙarshe don tushen famfo mai kilogiram 42?
- Shin rahotannin ku na CMM sun haɗa da bayanan ramuwar zafi da aka shiga yayin taga binciken na awa 8?
Gina Amincewa-Ba kawai Abubuwan Ba
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. isarwa injin ƙarfe simintin gyare-gyare mafita inda abin dogaro ba zai yiwu ba - ba saboda muna da'awar shi ba, amma saboda tsarinmu ya bar shaida. Kowane bawul ɗin matsa lamba yana jigilar kaya tare da alamar QR mai haɗawa zuwa cikakkiyar takaddar bincikensa: takaddun shaida, jadawalin maganin zafi, gajimare mai nuni na CMM, da taswirorin tarkace. Abokan ciniki a Arewacin Amurka da Turai suna amfani da waɗancan fayilolin don ASME Sashe na VIII Sashe na UG-120 duba bin bin doka. OEMs na kudu maso gabashin Asiya suna nuni da su yayin APQP Stage 3 sake dubawa.
Ba mu kori girma. Muna mai da hankali kan ɓangarorin da gazawa ke nufin raguwar lokaci, haɗarin aminci, ko hukunci na tsari-kamar nozzles na tushen cobalt T800 wanda ke sarrafa narkakken gishiri 450°C a cikin tsirran hasken rana. A can, 0.02-mm taper taper ba "ƙananan karkata ba." Rashin daidaituwar kwararar ruwa ne wanda ke hanzarta yazawa da kashi 300%.
Makomar nasa ne ga tsarin haɗaɗɗiyar: saka hannun jari-siffa kusa-tallaka tare da filayen rufewa na CNC, ɗakunan simintin yashi tare da haɗaɗɗun tashoshi masu sanyaya da aka gama ta hanyar niƙa mai sauri. Muna faɗaɗa R&D ɗin mu akan gyare-gyaren simintin sanyaya mai sarrafawa da haɓaka sa ido kan rawar jiki don gano ainihin lokacin hira yayin zurfin rami mai ban sha'awa na tubalan Silinda.
Idan aikin ku na gaba ya buƙaci injin ƙarfe simintin gyare-gyare wanda ke riƙe gaskiya a 300°C, yana tsira 10⁶ zagayowar matsa lamba, kuma ya zo tare da abubuwan ban mamaki mai girman sifili—fara da gano kayan abu, ba farashin kowane kilogram ba.
