Lokacin da injiniyoyi suka ƙididdige simintin gyare-gyaren harsashi don daidaitattun sassa na ƙarfe, ba kawai zaɓin tsari suke ba—suna zaɓar hanya zuwa kwanciyar hankali, amincin saman ƙasa, da sake fasalin ƙananan abubuwa waɗanda ke aiki ƙarƙashin matsananciyar matsa lamba, zafin jiki, ko lalacewa. A masana'anta simintin gyare-gyaren harsashi dole ne ya yi fiye da zuba narkakkar karfe a cikin harsashin yashi mai ɗaure da guduro. Dole ne ya haɗu da sarrafa ƙarfe tare da shirye-shiryen injina-musamman lokacin da sashin shine gidan famfo na cobalt-alloy wanda aka kimanta don mashaya 350 ko jikin bawul na AMS 5387 yana buƙatar ± 0.02 mm GD&T yarda.
Me yasa Shell Mold Simintin Yake Isar da Inda Wasu Tsarukan Ke Famawa
Harsashi gyare-gyare yana zaune a tsakanin simintin yashi da simintin saka hannun jari: sauri fiye da bata-kakin zuma, juriya fiye da kore-yashi, kuma mafi girma fiye da harsashi yumbu don gudanar da matsakaicin girma na masana'antu. Ƙarfinsa ya ta'allaka ne a cikin bakin ciki, harsashi mai wuya - yawanci kauri 6-10 mm - wanda aka samar ta hanyar lulluɓe ƙirar ƙarfe mai zafi (180-250 ° C) tare da yashin silica mai rufi na phenolic. Sakamakon? Yana gamawa na Ra 2.5-6.3 μm, juriya na layi har zuwa ± 0.3 mm akan fasalulluka a ƙarƙashin 300 mm, da ƙaramin daftarin buƙatu (0.5°-1.5°). Amma waɗannan lambobin suna nufin kaɗan ba tare da horon tsari ba.
Mun ga abokan ciniki sun canza daga simintin yashi zuwa gyare-gyaren harsashi kawai don fuskantar yaƙi a cikin manyan gidaje na Silinda-har sai sun gane tushen tushen ba shine ƙirjin ba, amma rashin daidaituwa na ainihin bugu yayin taron harsashi. A wurin aikinmu da ke Qingdao, kowane saitin harsashi yana fuskantar tabbacin daidaitawar gani kafin rufewa. Ana gwada kowane yanki na yashi mai rufaffiyar guduro don iya gudana, ƙarfin juzu'i, da ragowar ƙonawa. Kuma kowane simintin gyare-gyaren da aka zubar yana sanyaya ƙarƙashin ikon iska mai sarrafawa-ba a tilastawa kashewa ba-don hana raguwar damuwa a cikin manyan sassan gami.
Haɗin Kai Tsaye Ba Ne Tattaunawa ba don Sassan Mahimmanci
Yin gyare-gyaren Shell kadai baya bada garantin bawul ɗin matsa lamba mai aiki. Abin da ke da mahimmanci shine abin da ke faruwa kafin da bayan: gano kayan abu, aiki tare da maganin zafi, da ma'anar datum mai shirye-shiryen CNC. Shi ya sa a gaskiya masana'anta simintin gyare-gyaren harsashi dole ne ya mallaki-ko kuma ya yi mulki sosai-cikakkiyar sarkar.
- Wanda aka riga aka yi: Certified T800 cobalt-based alloy ingots, wanda aka tabbatar ta hanyar PMI da OES; Girman hatsi ana sarrafa shi ta hanyar ƙarfe na ƙarfe da kuma saka idanu yanayin zafi (± 5°C haƙuri)
- Lokacin simintin gyare-gyare: Hoton yanayin zafi na ainihin lokaci don gano wuraren zafi na gida waɗanda ke haifar da ƙananan raguwa a cikin sassan bangon bakin ciki
- Post-cast: Rage damuwa-damuwa a cikin tanderun da ke sarrafa yanayi, sannan binciken CMM 3-axis *kafin* machining-amfani da datums-simintin don tabbatar da murdiya.
Wannan haɗin kai yana kawar da ɓangarorin hannu inda ɗimbin ɗimbin yawa ke taruwa. Lokacin da abokin ciniki ya aiko mana da zanen silinda na piston famfo tare da ɓangarorin 12 masu mahimmanci da haƙurin matsayi na 0.015 mm, mun kama tsangwama tsakanin ƙyalli na ƙyalli da kayan aikin injin na ƙarshe yayin bita na injiniya-ba bayan binciken labarin farko ba.
Ƙwararriyar Abu tana Ma'anar Ƙimar Ayyuka
Cobalt-nickel Alloys kamar AMS 5387 ba sa aiki kamar daidaitaccen bakin 316. Babban ƙimar aikinsu mai ƙarfi, ƙarancin wutar lantarki, da matakan carbide masu ɓarna suna buƙatar sigogin simintin simintin gyare-gyare don * waccan takamaiman sinadarai* — ba saitin “superalloy” na gama gari ba. Wasu masana'antun suna kula da duk kayan haɗin cobalt iri ɗaya. Ba mu.
A aikace, wannan yana nufin daidaita kaurin harsashi ta ± 1.5 mm dangane da yanayin sashe, canza saurin gating don guje wa zaizayar nozzles mai kyau, da riƙe lokacin ƙarfafawa a cikin daƙiƙa 90 don matosai ƙarƙashin diamita 40 mm. Mun yi mashin fiye da 17,000 AMS 5387 nozzles tun daga 2021. Kowane batch ya haɗa da cikakken yanayin zafi, rahotannin gwaji na ASTM E8, da kuma hotunan microstructure da ke nuna rarraba eutectic carbide iri ɗaya-babu keɓaɓɓen gungu kusa da shigarwar ƙofa.
Wannan matakin sarrafa ya raba mai kaya wanda ke jigilar simintin gyare-gyare da wanda ke jigilar * ingantattun kayan aikin aiki*. Idan aikace-aikacenku ya haɗa da lodin keken keke sama da 200 MPa ko fallasa zuwa kogunan mai da iskar gas mai arzikin H₂S, daidaiton kayan ba zaɓi ba ne— layin farko na rigakafin gazawa.
Zabar Abokin Hulɗa Da Ya dace yana nufin yin Tambayoyi masu dacewa
A masana'anta simintin gyare-gyaren harsashi yakamata a amsa waɗannan-ba a cikin ƙasidu na talla ba, amma a cikin tattaunawar injiniya:
- Za a iya nuna mani rahotannin batch uku na ƙarshe na AMS 5387-ciki har da girman hatsi, ƙarar carbide%, da tazarar interdendritic?
- Kuna tabbatar da lissafin simintin simintin simintin *kafin* yin injina, ta yin amfani da datum na asali na simintin — ba kawai juzu'i na ƙarshe ba?
- Menene matsakaicin nauyin ku na yanki guda don kayan kwalliyar cobalt na harsashi-kuma ta yaya kuke sarrafa bambancin yawan zafin jiki a cikin wannan kewayon?
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana saduwa da waɗannan tambayoyin tare da rubuce-rubucen hanyoyin, ba alkawuran ba. Kayan aikin da ya dace da ISO yana goyan bayan gyare-gyaren harsashi don baƙin ƙarfe, ƙarfe, bakin karfe, da manyan ayyuka na cobalt-nickel gami - tare da injin CNC, jiyya mai zafi, da ƙare saman ƙasa a ƙarƙashin rufin ɗaya. Yana ba da sabis na OEM na ruwa, masu haɗa kayan aikin waje, da ƙwararrun masu ginin famfo a duk faɗin Arewacin Amurka, Turai, da Kudu maso Gabashin Asiya-ba a matsayin mai siyarwa ba, amma azaman haɓaka ƙungiyar injiniyoyinsu.
Ana sa ran gaba, masana'antar za ta buƙaci ƙarin haɗin kai na simintin gyare-gyare da ƙarin matakai, faɗaɗa takaddun shaida don darajar makaman nukiliya da aikace-aikacen API 6A, da ingantacciyar tagwayen dijital don hadaddun simintin gyare-gyare. Na gaba-tsara masana'anta simintin gyare-gyaren harsashi ba kawai zai kwafi geometry ba. Zai yi hasashen aikin-farawa da harsashi.
