Lokacin da injiniyoyi suka bayyana colloidal silica zuba jari simintin gyaran kafa don sassa na ƙarfe masu mahimmanci, ba kawai zaɓin tsari ba - suna zaɓar garantin aiki. Kwanciyar kwanciyar hankali a ƙarƙashin hawan keken zafi. Ƙarshen saman da ke kawar da niƙa bayan simintin. Ikon Microstructure a cikin cobalt alloys inda kowane iyakar hatsi ke da mahimmanci. Waɗannan ba fa'idodin ka'ida ba ne. Sakamako ne da muke gani yau da kullun a cikin kayan aikin mu na ISO da ke Qingdao-inda kowane rukunin AMS 5387 cobalt alloy famfo gidaje ko bututun ƙarfe na T800 suna wucewa ta binciken CMM masu zaman kansu guda uku kafin barin layin.
Me yasa simintin saka hannun jari na colloidal silica ke bayarwa inda sauran hanyoyin suka tsaya
Colloidal silica slurries suna samar da ƙarfi, mafi kwanciyar hankali na yumbu fiye da na gargajiya na ethyl silicate. Wannan ƙarfin yana fassara kai tsaye zuwa ƙananan fashewar harsashi yayin lalatawa da harbe-harbe-da rashin haƙuri don murdiya a cikin gidaje masu silinda mai katanga da aka ƙididdige don sabis na injuna 420. Mun auna fadada harsashi a 0.012% a kowace ° C har zuwa 1100 ° C; masu fafatawa da ke amfani da gilashin ruwa ko tsarin haɗin alumina sukan wuce 0.035%. Wannan bambanci? Ita ce tazarar da ke tsakanin bugawa ± 0.05 mm GD&T akan gidan famfo famfo na 320 mm piston-da kuma goge shi bayan binciken labarin farko.
Ba mu gudanar da simintin siliki na colloidal a matsayin layi na tsaye. An haɗa shi tare da madaidaicin mashin ɗin CNC a cikin aikin guda ɗaya: jefa jigon jigon, injin madaidaicin saman saman da sifofin zaren, sannan a yi amfani da maganin zafi mai sarrafawa * ba tare da fashewa ba*. Babu handoffs. Babu sake gano kayan abu. Kowane bangare yana ɗauke da ID mai lamba Laser mai haɗawa zuwa takaddun shaida na albarkatun ƙasa, rajistan ayyukan harsashi, taswirar tanderu, da rahotannin CMM na ƙarshe.
Wannan haɗin kai yana warware ainihin maƙasudin zafi: yaƙi a cikin manyan simintin ƙarfe na ƙarfe. Wani abokin ciniki ya taɓa kawo mana jikin bawul ɗin bakin karfe wanda ya karkace 0.18 mm bayan kawar da damuwa-saboda simintin simintin su, jigilar kaya, kuma ya bar abokin ciniki ya kula da maganin zafi daban. Muna sake yin aikin ta amfani da kayan abinci iri ɗaya na T800, amma muna riƙe sashin a cikin tanderun injin mu nan da nan bayan girgizawa. Karshe murdiya: 0.023 mm. Ba sihiri ba. Kawai sarrafa tarihin zafi-da cikakken ikon mallakar tsari.
Me ke sa masana'antar simintin saka hannun jari ta colloidal silica ta bambanta
Yawancin shaguna suna kiran kansu "kamfanonin simintin saka hannun jari." Kadan a zahiri sun mallaki tsarin silica slurry colloidal, ka'idojin bushewar harsashi, da lalata bayanan martaba waɗanda ke ayyana nasara tare da superalloys. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., muna daidaita danko mako-mako ta amfani da Brookfield viscometers, saka idanu pH drift a ainihin lokaci, da ƙin duk wani slurry tsari a waje 9.2-9.6 pH-ko da ya yi kama da cikakke. Me yasa? Saboda pH yana canza yuwuwar yuwuwar silica barbashi na zeta, wanda ke canza girman harsashi, haɓakawa, kuma a ƙarshe, ƙarancin ƙasa (Ra) akan sassan da aka gama. Mun ga Ra yayi tsalle daga 1.8 µm zuwa 4.3 µm lokacin da pH ya gangara zuwa 9.8.
Muna kuma ɗaukar harba harsashi azaman ƙarfe-ba kawai yumbu ba. Kilns ɗinmu suna takawa a ≤60°C/hour har zuwa 1050°C, riƙe tsawon mintuna 90, sannan suyi sanyi a ≤40°C/h. Wannan jinkirin sake zagayowar yana hana microcracking a cikin sassa masu kauri na simintin cobalt-nickel. Ɗaya daga cikin famfo OEM na Turai ya canza mana bayan masu samar da kayayyaki guda biyu sun ba da fashe wuraren ci gaba na AMS 5387. Binciken tushen tushen su ya nuna karayar girgizar zafi da ta samo asali daga musaya na harsashi zuwa karfe. Bayanan harbinmu ya kawar da su. Ba ta hanyar canza gami ba - amma ta wurin mutunta yadda harsashi ke numfashi.
- Ingantattun kayan albarkatun kasa kawai-kowane coil ana iya gano shi zuwa rahoton gwajin niƙa
- Babu kwangilar harsashi ko lalata-100% sarrafa tsari na cikin gida
- GD&T-Bita na ƙira na farko: muna ba da alamar kusurwoyi ƙasa da 0.5° kafin fara kayan aiki
- Ingantacciyar gamawar saman saman akan na'urar tantancewa - ba kawai duban gani ba
Aikace-aikace na ainihi na duniya inda simintin siliki na colloidal ya tabbatar da ba za a iya sasantawa ba
Bawul ɗin matsa lamba don mai na teku & iskar gas suna buƙatar aiki mara lalacewa a -46°C zuwa +121°C. Yin simintin yashi ba zai iya ɗaukar madaidaicin wurin zama na mm 0.02 da ake buƙata ba. Daidaitaccen simintin saka hannun jari yana gwagwarmaya tare da yawan zafin jiki na gidaje ASTM A494 M35-1. Colloidal silica yana yin duka biyu: matsananciyar juriya *da* tsattsauran mutunci mara nauyi a cikin matsanancin yanayin zafi.
Kwanan nan mun ƙirƙira manyan na'urori na tsakiya don tsarin winch abin hawa-ɓangarorin tare da 220 mm OD, kauri na bango 45 mm, da juzu'i na ciki. Abokin ciniki yana buƙatar taurin ≥58 HRC * ta sashi *, ba kawai yanayin-taurara ba. Colloidal silica yana kunna kaurin harsashi iri ɗaya, daidaitaccen ƙimar ƙarfin ƙarfi, da ƙarancin ƙarfi a cikin yanki mai ɗaukar nauyi mai mahimmanci. Lokacin injina ya ragu da kashi 37% idan aka kwatanta da simintin simintin yashi saboda mun isar da siffa ta kusa tare da rarraba haja.
Sauran tabbatattun shari'o'in amfani sun haɗa da:
- Cobalt alloy nozzles don fafutuka masu jujjuyawa mai saurin gudu (jin T800, 62-65 HRC)
- Tushen famfo da ke buƙatar flatness ≤0.08 mm sama da tsayin 850 mm
- Masu ɗaukar sandar fistan marasa daidaituwa tare da haɗaɗɗun tashoshi masu sanyaya - simintin gyare-gyare, ba walda ba
Zaɓin masana'antar simintin saka hannun jari na colloidal silica ba game da iya aiki ba ne - game da ƙwarewa ne
Idan ɓangaren ku yana buƙatar AMS 5387, T800, ko UNS R30005-kuma dole ne ku tsira da hawan hawan matsa lamba 10,000+ ba tare da ƙaddamar da microcrack ba - kuna buƙatar fiye da ginin tushe. Kuna buƙatar abokin tarayya wanda ke kula da silica colloidal ba a matsayin mai ɗaure ba, amma a matsayin mai canjin ƙarfe. Wanene ya tabbatar da ƙarfin harsashi tare da gwaje-gwajen matsawa na ASTM C133 - ba kawai duban gani ba. Wanene ke danganta kowane lahani na simintin gyare-gyare zuwa ƙayyadaddun canjin siga: shekarun slurry, ƙimar ragewa, ko ma yanayin zafi yayin tsomawa.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki ta wannan hanyar-ba don dacewa ba, amma saboda abubuwan da ke da mahimmancin manufa ba su bar wurin zato ba. Mun buga mu colloidal silica tsari windows. Muna raba bayanan adadin harsashi tare da abokan ciniki. Mun bar injiniyoyi su duba rajistan ayyukan mu na CMM. Wannan gaskiyar ba talla ba ce. Yana da yadda kuke tabbatar da cewa "masana'antar simintin saka hannun jari na colloidal silica" akan takarda yayi daidai da abin da ke gudana a filin shago.
Don madaidaicin sassa na ƙarfe inda gazawar ba zaɓi ba ne, masana'anta da suka dace ba kawai jefa ƙarfe ba. Yana jefa amincewa.
