Sassan ƙarfe na simintin gyare-gyare ba kawai suna jure wa yanayin masana'antu masu nauyi ba-suna ayyana dogaro lokacin da gazawar ba zaɓi bane. Mun ga bawul ɗin matsa lamba suna fashe a ƙarƙashin hawan keke, gidajen famfo na piston suna yawo bayan watanni 18 a cikin sabis na mai a bakin teku, da mashinan raƙuman ruwa na cibiyar winch sun kama tsakiyar ɗagawa akan ma'adinan ma'adinai. Kowace gazawa tana komawa zuwa tushen dalili guda ɗaya: halayen abin duniya da bai dace da bayanan bayanan damuwa na zahiri ba. Shi ya sa simintin gyare-gyaren ƙarfe-musamman waɗanda aka ƙera don kwanciyar hankali mai girma, daidaiton tsarin ƙaƙƙarfan tsari, da aikin ƙarfe na aiki-sun kasance ba za a iya maye gurbinsu ba a cikin tsarin na'ura mai aiki da ƙarfi, motocin injiniya, da manyan tarukan famfo.
Me yasa Sassan Ƙarfe Na Simintin Ɗaukar Ƙarfe Sun Fi Haɓaka Madadi a Matsayin Mahimmanci
Ƙarfe na ƙirƙira yana ba da ƙarfi, amma ba shi da hadadden lissafi na ciki. Ƙirƙirar welded suna gabatar da yankunan da zafi ya shafa waɗanda ke lalata rayuwar gajiya. Billet ɗin da aka yi amfani da su suna ɓarna kashi 60-75% na albarkatun ƙasa-kuma suna kokawa da bambance-bambancen kauri na bango gama gari a jikin bawul ko gidajen silinda. Simintin gyare-gyaren ƙarfe na warware wannan iyakoki uku-uku. Yashi simintin gyare-gyare yana ba da siffofi na kusa-net don manyan sassa masu kauri kamar tushen famfo; Simintin saka hannun jari ya sami ± 0.05 mm juriyar haƙuri akan bakin ciki mai bangon cobalt gami nozzles. Mahimmanci, tsarin ƙarfafawa yana ba da damar daidaita tsarin ƙwayar hatsi mai sarrafawa - musamman mahimmanci a cikin AMS 5387 cobalt alloy 6 sassan famfo inda sanyin jagora ya hana fashewar intergranular yayin hawan hawan hawan keke.
Muna gwada sassa na simintin ƙarfe akai-akai akan matakan aiki guda uku: thermal shock juriya sama da 400°C, Ƙimar yazawa ƙasa da 0.08 mm / shekara a cikin slurry abrasive, kuma rayuwar gajiyawa ta wuce 10⁷ hawan keke a 85% yana haifar da damuwa. Tsarin zafi na ASTM A216 WCB ko ASTM A351 CF8M da aka yi da zafi kawai sun haɗu da duka ukun. Zaɓuɓɓukan ƙananan farashi sun kasa tsinkaya-ba a farawa ba, amma a alamar watanni 14, lokacin da microcracks ke lalatawa a wuraren da ba za a iya ganin su ba zuwa daidaitaccen binciken UT.
Kudin Boye na Zaɓin Abun "Mai Kyau".
Wasu masu siye suna ƙayyadad da “simintin ƙarfe” ba tare da fayyace ma'ana ba, maganin zafi, ko buƙatun NDT. Mun aika da raka'a 220 na T800 cobalt-based shaft roller zuwa Turai OEM-kawai don karɓar sanarwar tunawa bayan makonni shida. Tushen dalili? Mai samar da su ya maye gurbin ASTM A487 Grade CA15 don T800 ba tare da izini ba. Dukansu su ne martensitic bakin karfe-amma CA15 yana da 12% Cr da T800's 27% Cr + 5% Mo. Sakamakon haka: chloride pitting a cikin akwatunan girki mai sanyaya ruwan teku. Lalata da aka fara a alamomin mashin ɗin da aka bari ta rashin ingantattun kayan aiki, wanda ke ƙaruwa da damuwa ta saura daga ɓarkewar walƙiya mara kyau.
Wannan ba ka'idar ba ce. Shi ya sa muke aiwatar da wuraren bincike guda huɗu waɗanda ba za a sasanta ba: ingantattun rahotannin gwajin niƙa na kowane zafi mai yawa, nazari kai tsaye spectrographic akan sanduna masu shigowa, solidification kwaikwaiyo kafin mold zane, kuma cikakken sashe taswirar taurin kan ƙãre simintin gyaran kafa. Babu keɓance-har ma don samfura. Abokan ciniki waɗanda suka tsallake waɗannan matakan suna biyan ƙarin 3.2 × a cikin gazawar filin fiye da ingantaccen kayan aiki na gaba.
Sarrafa Manufacturing Wanda Farawa Kafin Zuba
Aiki na gaskiya yana farawa a cikin tushe-amma yana haɓaka ta hanyar inji, magani mai zafi, da ƙarewa. Muna haɗa simintin yashi tare da injin CNC mai axis guda biyar a cikin aikin guda ɗaya: Gidajen simintin gyare-gyare suna tafiya kai tsaye daga shakeout zuwa wutar tanderun damuwa, sannan zuwa masana'anta masu ban sha'awa a kwance waɗanda ke riƙe ± 0.015 mm matsayi na juriya akan ƙwanƙwasa. Wannan yana kawar da kurakuran sake gyarawa waɗanda ke addabar masu samar da kayayyaki ta amfani da simintin gyare-gyare daban-daban da masu siyar da injina. Don abubuwan da aka gyara na AMS 5387, muna yin maganin warwarewa a 1150°C sannan kuma murkushewa cikin sauri-sannan shekaru a 800°C na awanni 16. Ana shigar da kowane mataki, ana iya gano shi zuwa ID ɗin batch da tashar thermocouple.
Kayan aikinmu mai yarda da ISO yana gudanar da binciken CMM akan 100% na mahimman fasali: wurin zama kan bawul ɗin matsa lamba, haɓakar cylindricity akan gidajen famfo na piston, da ƙare saman kan hanyoyin tuntuɓar abin nadi (Ra ≤ 0.4 µm). Mun ƙi yin simintin gyare-gyaren da ke nunawa> 0.15% rabuwar carbide a cikin sikanin microstructure-ko da sun wuce ƙididdigar ƙira. Domin ba a auna mutunci a microns kadai ba. Yana cikin daidaituwar rarraba chromium a kowane iyakar hatsi.
Zaɓan Ƙarfe na Simintin Ƙarfe waɗanda ke Isarwa-Ba kawai Bayyanawa ba-Ayyukan
Yi waɗannan tambayoyin kafin kammala kowane mai siyarwa: Shin takaddun shaida na kayan aikinsu ya ƙunshi abubuwan sinadarai * da* kayan inji kowane zafi? Shin suna yin gwajin ultrasonic akan 100% na gidaje masu matsa lamba - ko kawai samfurin kuri'a? Shin za su iya samar da rahotannin microstructure da ke nuna tazarar hannu na dendrite da ƙimar haɗawa ta ASTM E45? Idan amsar ita ce "a'a" ga kowa, kuna siyan kaya-ba inshora ba.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana gina sassa na ƙarfe don injiniyoyi waɗanda suka maye gurbin bawul iri ɗaya sau uku. Mayar da hankalinmu ya tsaya kunkuntar: tsarin sarrafa na'ura mai aiki da karfin ruwa, kayan aikin mai & iskar gas, kayan aikin injiniyan kayan aikin wutar lantarki, da taruka na musamman na famfo da ke buƙatar alluran cobalt-nickel, kayan-sa T800, ko simintin bakin karfe daidai. Ba mu kori girma. Muna yin aikin injiniyan maimaitawa-fiye da batches 500-raka'a 500, tsakanin tazara na sabis na shekaru 12, sama da -40°C turawar Arctic da 500°C na yawan shaye-shaye.
Sassan ƙarfe na simintin gyare-gyare suna yin nasara lokacin da ƙarfe ya haɗu da manufa. Ba lokacin da ƙayyadaddun bayanai suka yi kyau akan takarda ba - amma lokacin da ɓangaren ke riƙe da matsa lamba a mashaya 350 yayin juyawa a 1,800 rpm, kowace shekara. Wannan shine ma'aunin da muke tsarawa, jefawa, injina, da kuma tabbatarwa zuwa-kowane lokaci.
