Lokacin da injiniyoyi suka bayyana gami karfe zuba jari simintin gyaran kafa factory ayyuka, ba wai kawai yin odar sassa bane - suna tabbatar da kwanciyar hankali a ƙarƙashin nauyin hydraulic 400 MPa, daidaiton microstructural a cikin batches na raka'a 500, da rashin haƙuri ga porosity a cikin wuraren zama na bawul. Wannan ita ce gaskiyar aiki a bayan ingantattun abubuwan masana'antu kamar gidaje na silinda na piston ko AMS 5387 cobalt alloy nozzles - sassan da karkacewar 0.02 mm ke haifar da gazawar aiki.
Mun ga shi da kansa: wani kayan aikin filayen mai na Arewacin Amurka OEM ya jinkirta ƙaddamar da aiki na makonni 11 saboda simintin gyare-gyaren gami da “certified” na masu samar da su ya gaza gwajin ultrasonic a sa'o'i 72 bayan-zafi. Tushen dalili? Matsakaicin gano ɗanyen abu da ƙima da ƙima - ba kuskuren inji ba. Wannan lamarin ya sake fasalin yadda muke kusanci simintin saka hannun jari na gami a QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. Shi ya sa kowane abin nadi na tushen winch na T800 yana farawa da ingots da aka tabbatar da niƙa, ba nau'ikan samfuran “marasa-jituwa” na gama gari ba.
Daidaitaccen daidaito a cikin simintin saka hannun jari na gami da ƙarfe yana buƙatar haɗin kai tsaye - ba kawai simintin gyare-gyare ba, amma sarrafa ƙarfe, ƙarewar axis da yawa, da dubawar GD&T-sane-duk ƙarƙashin rufin da ya dace da ISO. Yashi simintin gyare-gyare yana rike da babban lissafi; Simintin saka hannun jari yana ba da ƙarshen 0.05 mm Rz da ake buƙata don fuskokin hatimi mai ƙarfi. Amma ainihin bambance-bambancen ya ta'allaka ne akan abin da ke faruwa tsakanin waɗancan matakan: yanayin hawan zafi da aka tsara zuwa ± 1 ° C, tabbatar da CMM na mahimman abubuwan datum * kafin * da * bayan * taimako na danniya, da ma'aunin gani na ragowar gating na ciki wanda zai iya haifar da fashewar gajiya a cikin tushe mai ƙarfi na sake zagayowar. Ba mu fitar da kayan aikin thermal ba. Ba mu tsallake gwajin ƙarfin injin kafin yin aikin. Mun inganta kowane kuri'a akan ASTM A957 da EN 13381 - saboda "as-cast" ba ƙayyadaddun bayanai ba ne; yana da haɗari vector.
- Ilimin kayan aiki: Babu maye gurbin ba tare da sa hannun injiniya ba-har ma don ƙananan abubuwan haɗakarwa. Lokacin da abokin ciniki ya nemi 316L maimakon F22 don gidan famfo na ruwan teku, mun fara aiwatar da ƙirar ƙima. Sakamako: 316L ya lalace 3.2× da sauri a 85°C. Mun riƙe layin a kan F22-kuma mun ƙara daɗaɗɗen bakin ruwa na duplex inda saurin gudu ya wuce 4 m/s.
- Tsari aminci: Ana lalata harsashi na saka hannun jari a 120°C, ba “zazzabi na ɗaki + zafi na yanayi ba.” Alamar kakin zuma tana jurewa injin motsa jiki na awanni 72 kafin rufin yumbura. Me yasa? Saboda saura danshi yana haifar da ƙananan blisters waɗanda suka zama haɗaɗɗun oxide lokacin zubowa.
- Tabbatarwa na aiki: Kowane matsi bawul gidaje sha hydrostatic hujja a 1.5 × aiki matsa lamba, sa'an nan helium leak gwajin a 1 × 10⁻⁹ mbar · L / s hankali-ba kawai girma duba. Idan bai riƙe ba, ba ya jigilar kaya.
Wasu suna jayayya cewa masana'antun simintin gyare-gyare na ketare suna ba da mafi kyawun farashi. Suna yin-har sai kun ƙididdige ƙimar sake aiki daga tsarin hatsi mara daidaituwa, ko ƙarin cajin jigilar iska na $18,000 don maye gurbin gaggawa bayan gazawar filin. Abokan cinikinmu a Jamus da Texas sun ba da rahoton 42% ƙananan farashin mallakar mallaka sama da rayuwar sabis na shekaru 3 - ba saboda ƙimar mu ba ta da yawa, amma saboda yawan amfanin mu na farko ya wuce 94.7%, kuma maimaita girman girman mu yana riƙe ± 0.015 mm a cikin raka'a 200. Wannan daidaito ya fito ne daga sarrafa dukkan sarkar: ƙwararrun kayan ƙwalƙwalwa, bincike na gani na cikin gida, ƙirar yumbu mai injin CNC, da kwatankwacin ɓangaren ƙarshe na Laser akan CAD mara kyau.
Idan aikace-aikacen ku yana buƙatar ƙarfin masana'anta na saka hannun jari na gami wanda ke ɗaukar AMS 5387 azaman tushen tushe - ba banda - kuna buƙatar abokan haɗin gwiwa waɗanda suka yi injin T800 a 32 HRC ba tare da guntuwa ba, waɗanda ke tabbatar da tazarar interdendritic a cikin simintin gyare-gyare, kuma waɗanda ke ɗaukar kiran GD&T azaman wajibai na kwangila, ba shawarwari ba. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana gina wannan damar cikin kowane mataki na tsari-ba a matsayin yaren talla ba, amma kamar yadda aka rubuta ka'idojin dubawa, adana kayan tarihin samfuri, da kuma bayanan bayanan zafi na ainihi wanda aka saka a cikin tagwayen dijital na kowane sashe. Ba a samun daidaito a binciken ƙarshe. An kulle shi a matakin ƙirar kakin zuma, an tabbatar da shi a nazarin narkewa, kuma an tabbatar da lokacin da sashin ya tsira daga gwajin jimirin sa'o'i 500 na farko.
