Zabar dama simintin ƙarfe tsari ba game da zabar suna daga lissafin ba. Yana da game da daidaita ilimin kimiyyar lissafi, lissafi, da aiki-kafin a zubar da ƙura na farko. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Mun jefa sama da 12,000 na musamman sassa don na'ura mai aiki da karfin ruwa bawul, famfo gidaje, da teku winch shafts. Kowane gazawar ta koya mana wani abu kankare: simintin yashi ba zai riƙe ± 0.05 mm akan wurin zama na cobalt-alloy bututun ƙarfe ba; saka hannun jari yana fashe idan kun tsallake preheat akan AMS 5387; kuma simintin centrifugal yana kasawa da bala'i lokacin da kaurin bango ya faɗi ƙasa da mm 18 akan manyan layukan Silinda.
Fara da sashin-ba tsari ba
Yawancin injiniyoyi suna farawa da tambayar "Wace hanyar simintin ƙarfe ne mafi kyau?" Wannan tambayar tana kaiwa kai tsaye ga wuce gona da iri ko rashin aiki. Maimakon haka, ka tambayi abubuwa uku: Wane kaya za ta ɗauka? A ina ya gaza a sabis? Waɗanne juzu'i masu girma dole ne su tsira daga injin ƙarshe?
Mun taɓa karɓar zane don T800 cobalt alloy piston famfo gidaje - wanda aka yi niyya don aikin mashaya 350. Abokin ciniki ya ƙayyade simintin yashi. Amma bayan ƙirar damuwa na thermal stress da microstructure review, mun ba da shawarar saka hannun jari tare da ingantaccen ƙarfi. Me yasa? Yashi simintin gyare-gyare ya samar da tsarin hatsi mara daidaituwa kusa da tashar tashar bawul. Rukunin gwaji guda biyu sun fashe a mashaya 280 yayin gwajin fashewa. Simintin saka hannun jari ya isar da tazarar hannun dendrite iri ɗaya, ya wuce ingantaccen sanduna 420, da rage juzu'in aikin injinan daga 37% zuwa 9%.
Abin da ake ɗauka: Geometry yana sarrafa zaɓin tsari. Siriri mai katanga, hadaddun kwandon shara tare da matsananciyar GD&T kira don yin simintin saka hannun jari. Tushen tsarin sassa masu nauyi? Yin simintin yashi yana ba da mafi kyawun sarrafa farashi da kwanciyar hankali na zafi. Juyawa juzu'i tare da kaurin bango iri ɗaya? Yin simintin gyare-gyare na centrifugal yana ba da mafi girman yawa da rayuwar gajiyawa-musamman ga tushen fam ɗin bakin karfe wanda aka fallasa ga zaizayar ruwan gishiri.
Material yana bayyana rufin ku-da iyakokin ku
Ba za ku iya jefa abin da ba za ku iya ciyarwa ba. Cobalt-nickel gami kamar AMS 5387 da T800 suna da manyan wuraren narkewa (1370-1420°C), ƙarancin ruwa, da matsananciyar hankali ga gradients zafin jiki. Mun ga shagunan suna ƙoƙarin tilasta su cikin koren-yashi gyare-gyare-kawai don rufewar sanyi, raguwar porosity, da fashewar interdendritic. Waɗannan ba “ gazawar tsari ba ne.” Rashin daidaiton tsarin kayan abu ne.
Kayan aikinmu yana gudanar da layukan simintin simintin guda biyu: ɗaya wanda aka inganta don ƙarfe da ƙarfe na carbon (simintin yashi, har zuwa kilogiram 500), wani kuma wanda aka keɓe don manyan alloli masu ƙarfi (simintin saka hannun jari, vacuum-taimaka zuba, preheated yumbu bawo). Don nozzles na AMS 5387, muna amfani da tsarin harsashi na tushen silica wanda aka rigaya ya kai 1050°C—ba 800°C ba—don guje wa girgizar zafi da tabbatar da cikar mold. Wannan juzu'in juzu'in guda ɗaya ya yanke abubuwan haɗin oxide na ciki da kashi 63% a cikin binciken mu na watanni 18 na ƙarshe.
Kada ku ɗauka "bakin ƙarfe" yana nufin abu ɗaya. 316 bakin aiki yana da bambanci sosai fiye da 17-4PH ko F22. Kuma gawawwakin cobalt suna buƙatar dabaru daban-daban na gating, tashi da sanyaya fiye da Inconels na tushen nickel. Idan mai siyar da ku bai nemi cikakkun takaddun ƙayyadaddun ƙaƙƙarfan ku ba - gami da tarihin maganin zafi da ƙima mai ƙarfi/tasirin da ake buƙata - kun riga kun kasance a baya.
Haɗin kai yana doke keɓewa - kowane lokaci
Cikakken simintin gyare-gyare ba shi da amfani idan ba za a iya yin na'ura don bugawa ba. Muna ganin wannan kullun: abokin ciniki ya ba da odar kafuwar ƙarfe mai yashi, sannan yana buƙatar ± 0.025 mm flatness a saman 600 × 400 mm. Ba zai yuwu ba ba tare da taimakon danniya da daidaitawa daidai ba. Ko filogin cobalt na saka hannun jari ya zo tare da filasha mm 0.3 a layin rabuwa - sannan an ƙi shi saboda shagon CNC ba shi da kayan aikin ƙarami don zaren ciki na 3.2 mm.
Shi ya sa QINGDAO QIANGSENYUAN TECHNOLOGY ya haɗu da simintin gyare-gyare, jiyya na zafi, mashin ɗin axis da yawa, da dubawar CMM a ƙarƙashin rufin da ya dace da ISO. Lokacin da muka faɗi jikin bawul ɗin matsa lamba, muna kwaikwaya gabaɗayan tafiyar aiki: simintin ɓata ramuwa, lokacin sake zagayowar damuwa, ƙirar ƙira don matse bangon bakin ciki, da ma'aunin gani na filaye mai mahimmanci. Ba mu kashe sassa - muna ba da ingantattun kayan aikin aiki.
Wannan haɗin kai yana yanke lokacin jagora da kashi 31% akan oda mai matsakaicin girma kuma yana kawar da 94% na sake yin aikin girma. Mafi mahimmanci, yana ba mu damar magance matsaloli kafin su wanzu-kamar daidaita gating don rage yawan damuwa a cikin abin nadi na cibiyar winch ta yadda niƙa ta ƙarshe ta cimma Ra 0.4 µm ba tare da zance ba.
Yi tambayoyin da suka dace-kafin ku yi
Kafin zabar a simintin ƙarfe abokin tarayya, tabbatar da waɗannan abubuwa biyar:
- Shin suna inganta tsarin simintin su-ba kawai bincika sakamakon ba? Nemi ƙarfafa rahotannin kwaikwaiyo da kuma ragi na raƙuman zafi a kowace kuri'a.
- Shin za su iya bin diddigin kowane tsari zuwa takaddun shaida - gami da rahotannin gwajin niƙa da nazarin yanayin yanayi? Babu keɓance ga cobalt ko nickel gami.
- Shin suna aiwatar da cak na CMM akan tsarin kore ko kakin zuma-ba kawai sassan ƙarshe ba? Mahimmanci ga GD&T-majalisu masu nauyi kamar gidajen famfo na Silinda.
- Menene ƙwaƙƙwaran adadin yawan amfanin ƙasa akan takamaiman gami da lissafin ku? Ba "matsakaicin masana'antu" ba - naku.
- Shin suna yin bitar ƙirƙira yayin aikin injiniya - ba bayan fara kayan aiki ba? Muna ba da alamar haɗari kamar ƙasƙanci wanda ke kama kayan harsashi na yumbu ko radi don ƙananan fil.
Babu hanyar simintin ƙarfe "mafi kyau" na duniya. Akwai madaidaitan wasa kawai - don shari'ar lodin ku, kayanku, juriyar juriyar ku, da taga isar da ku ta zahiri. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., muna ɗaukar kowane simintin gyare-gyare a matsayin tsari-ba sashi ba. Domin a cikin tsarin na'ura mai aiki da karfin ruwa, kayan mai & iskar gas, da injiniyoyin abubuwan hawa, gungu na porosity guda ɗaya ba aibi bane na kwaskwarima. Hanya ce mai zubewa. Asalin gajiya. Rashin fage yana jiran faruwa.
Zaɓi tsarin da ya mutunta manufar sashin ku-ba kawai siffarsa ba.
