Lokacin da injiniyoyi suka bayyana masana'anta simintin gyaran ƙarfe ayyuka, ba wai kawai yin odar sassa bane - suna tabbatar da kwanciyar hankali a ƙarƙashin nauyin hydraulic 300-bar, amincin microstructure bayan jiyya na zafi, da ƙarewar saman da ke tsayayya da slurry a cikin gidajen famfo mai. Wannan shine bakin kofa mafi yawan masu kawo kaya. Mun sha ganin shi akai-akai: wani yanki ya wuce binciken CMM a jigilar kaya amma ya kasa yin gwajin aiki bayan awanni 48 na aiki-saboda rarraba nodule na graphite ba a tabbatar da riga-kafin na'ura ba, ko saboda machining-induced ragowar damuwa ya fashe a lokacin hawan keke.
Me Yasa Karfe Ya Bukaci Fiye da Yin Simintin Ƙarfe kawai-Ko Ƙirƙirar Mashina kawai
Simintin gyare-gyaren ƙarfe don ainihin aikace-aikace-kamar fistan famfo Silinda gidaje ko winch center shaft rollers-suna zaune a tsakar ƙarfe da lissafi. Yashi-simintin ductile baƙin ƙarfe (ASTM A536 Grade 65-45-12) yana ba da ƙarfin juyi da ƙarfin damping. Amma filaye da aka ƙera da kyar suna riƙe ±0.025 mm juriyar matsayi akan ɗaukar mujallu. Wannan shine inda haɗin kai tsaye ya zama wanda ba za a iya sasantawa ba. A wurin aikinmu a Qingdao, ɗanyen ƙarfe yana zubowa cikin yashi ya canza sau ɗaya - kuma a gaba, waɗancan simintin ɗin suna fuskantar damuwa, jujjuyawar CNC, sannan a gama niƙa a kan injunan axis 5 tare da binciken Renishaw. Babu handoffs. Babu rashin daidaituwa. Babu zato game da ƙimar haɓakar haɓakar zafin jiki a cikin matakan aiwatarwa.
Mun auna tasirin: sassan da aka yi amfani da su a cikin sa'o'i 72 na simintin gyare-gyare sun nuna 40% ƙananan murdiya bayan aikin injiniya fiye da waɗanda aka gudanar a cikin kaya na makonni biyu. Me yasa? Saboda muna sarrafa yanayin sanyaya daga zubowa zuwa anneal-kuma muna yin injin kafin hazo na biyu yana kulle cikin damuwa na ciki. Wannan ba ka'idar ba ce. Yana da bayanan da aka shigar a cikin ayyukan samarwa 1,200+ tun daga 2019.
Haƙiƙanin Farashin Masu Kayayyakin Simintin Ƙarfe na “Standard”.
Wasu masu siye suna ɗaukar simintin ƙarfe kamar farantin ƙarfe na kayayyaki - oda daraja, samun takaddun shaida, ci gaba. Amma lokacin da jikin bawul ɗin ku dole ne hatimi a 250 ° C yayin da yake tsayayya da lalata H₂S, ASTM A536 bai isa ba. Kuna buƙatar ganowa har zuwa ladle sunadarai: daidaitaccen carbon (CE) tsakanin 4.2-4.5, sulfur <0.015%, da kuma nodularity>An tabbatar da kashi 85% ta hanyar ASTM E2352 metallography - ba kawai sandunan tensile ba.
Mun samo ƙwararrun ƙarfe na ductile daga tushe guda uku na ISO 9001 tare da bayanan ladle-zuwa-simintin ganowa. Kowane zafi yana zuwa tare da rahotannin spectrometric da hotuna na microstructure. Idan abokin ciniki ya nemi "AMS 5387 mai jituwa baƙin ƙarfe," ba za mu musanya ba - mun bayyana dalilin da yasa cobalt-nickel alloys ke cikin nozzles da matosai, yayin da ƙarfe mai girma-nodularity na cikin gidaje masu ɗaukar kaya. Madaidaicin ba game da ƙarin juriya kaɗai ba ne. Yana game da daidaita dabi'un abu zuwa ilimin lissafi mai aiki.
Ainihin Abin da Yake Faruwa A Cikin Masana'antar Simintin Ƙarfe Mai Ƙarfi Mai Ƙarfi
Tafiya cikin bene na kantinmu, kuma za ku ga ayyukan aiki tare guda uku suna gudana a layi daya:
- Shirye-shiryen yin wasan kwaikwayo: Mold simulation (ta yin amfani da MAGMASOFT®) yana tabbatar da ƙirar gating kafin a fara zubawa-babu sanyi yana rufewa a cikin tushe na famfo mai bakin ciki.
- sarrafa injina: Kowane Okuma MULTUS U3000 yana aiwatar da G-code wanda aka inganta akan tsarin STEP AP242; kayan aiki lalacewa ramuwa updates kowane 12 sassa ta amfani da in-aiki Laser auna.
- Tsananin dubawa: Kowane mahimmin girma ana bincika sau uku-na farko tare da CMM, na biyu tare da kwatancen gani, na uku tare da gage mai aiki yana kwaikwayon tsangwama na haƙiƙanin taro.
Babu wani mataki da aka tsallake. Babu "dubawa na ƙarshe" wanda shine tambarin roba. Lokacin da abokin ciniki ya aika GD&T-zane-zane masu nauyi don injinan abin hawa winch shafts, injiniyoyinmu suna nuna yuwuwar karon injuna * kafin* faɗi-ba bayan yanke tarkace ba.
Zaɓin Abokin Hulɗar ku Ba Game da Geography ba — Yana Game da Mallakar Tsari ne
OEMs na Arewacin Amurka galibi suna ɗaukar simintin ƙetare yana nufin jinkirin amsawar NRE ko rashin daidaituwar maganin zafi. Amma yankunan lokaci ba su da mahimmanci fiye da daidaitawar fasaha. Muna gudanar da daidaita aikin injiniya na yau da kullun cikin Ingilishi, Sifen, da Jamusanci—ta amfani da samfuran MBD da aka raba tare da alamar lokaci na gaske. Lokacin da kamfani na hydraulics na Turai ya buƙaci jikin bawul ɗin da ya dace da ISO 13849, mun haɓaka sake zagayowar damuwa tare da ƙungiyar kayan su - kuma mun isar da takaddun matakin PPAP na 3 a cikin kwanaki 11.
Hakan yana yiwuwa saboda mu masana'anta simintin gyaran ƙarfe baya fitar da ƙarfe, maganin zafi, ko dubawa na ƙarshe. Mun mallaki cikakken tari-daga narkakkar sinadarai na baƙin ƙarfe zuwa saman roughness Ra ≤0.8 µm akan fuskokin rufewa. Kuma muna rubuta shi duka: takaddun shaida, rajistan ayyukan kula da zafi, rahotannin CMM, har ma da rikodin pH mai sanyaya don layukan injin sarrafa T800-alloy kusa da sassan.
Idan aikin ku na gaba yana buƙatar simintin ƙarfe wanda ya tsira 10,000 hawan keke a 200 MPa lamba damuwa-ko kuma idan har yanzu kuna muhawara kan ko za ku fara jefawa ko na'ura da farko-fara da halayen kayan aiki, ba kasidar masu siyarwa ba. Daidaitawa yana farawa inda ƙarfe ya ƙarfafa. Komai ya biyo baya.
