Lokacin da injiniyoyi suka ƙididdige ɓangarorin ƙarfe masu inganci don bawul ɗin ruwa, famfo gidaje, ko shafts na winch-musamman a ƙarƙashin matsanancin matsin lamba, babban sutura, ko yanayin lalata-ba sa buƙatar mai siyarwa kawai. Suna bukatar a mim karfe allura gyare-gyaren tsari factory wanda ke fahimtar halayen ƙarfe, kwanciyar hankali, da yanayin gazawar aiki-ba kawai haƙuri akan zane ba.
Mun ga ayyuka da yawa sun tsaya tsayin daka a matakin samfur saboda zaɓaɓɓen masana'anta sun ɗauki MIM a matsayin "wani tsari ne kawai." A zahiri, MIM mai nasara don mahimman abubuwan haɗin gwiwar manufa yana buƙatar haɗin kai tsakanin zaɓin foda, ƙirar ɗaure, ƙaddamar da kinetics, sarrafa bayanan martaba, da injinan bayan-sinter. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Muna kula da kowane bangare na MIM kamar wurin zama na cobalt-nickel alloy valve: kuskure ɗaya a cikin sarrafa carbon yayin sintering na iya haifar da microcracking ƙarƙashin 300-bar cyclic loading. Wannan shine dalilin da ya sa kayan aikin mu masu yarda da ISO a Qingdao ba ya fitar da fitar da sikelin ko rarrabuwa - muna da cikakken zagayowar yanayin zafi, daga 650 ° C catalytic debind zuwa 1280C vacuum sintering tare da daidaitaccen saka idanu na raɓa.
Yawancin masu siye suna kau da kai ga matsananci mai mahimmanci: MIM ta yi fice a cikin hadaddun sifar-amma kawai a cikin tsauraran iyakoki na geometric. Kaurin bango dole ne ya kasance tsakanin 1.5 mm zuwa 8 mm. Matsakaicin ma'auni sama da 6:1 ƙarancin ƙarancin haɗarin haɗari. Yankewa? Yiwuwa-amma kawai tare da muryoyin yumbu masu ruɗi, ba daidaitaccen kayan aiki ba. Mun taimaka wa abokan ciniki su sake fasalin sassan famfo na AMS 5387 cobalt alloy don kawar da radiyoyin ciki masu kaifi, yanke murdiya ta hanyar 40% yayin da suke kiyaye amincin-tafiya. Wannan ba ka'idar ba ce. Abin da ke faruwa a lokacin da ka mim karfe allura gyare-gyaren tsari factory yana gudanar da kuri'a 120+ na MIM a kowace shekara akan kayan abinci na sararin samaniya - kuma yana yin rajistar kowane adadin raguwa, vector shafi, da karkatar da yawa a kowane tsari.
Ga abin da ke raba daidaitattun MIM da kayayyaki na MIM:
- Ana fara gano kayan abu kafin foda ya shiga hopper: Mun samo bokan gas-atomized CoCrMo da T800 foda foda tare da cikakkun rahotannin PMI-da kuma tabbatar da abun ciki na oxygen, rarraba girman barbashi (D50 = 8.2-9.6 µm), da kuma batch-by-batch mai yawa.
- Ƙidaya ba a kan lokaci ba - ana sa ido: Maimakon ƙayyadadden lokacin jiƙa, muna bin diddigin asarar taro na ainihi ta hanyar na'urori masu auna nauyi. Ragowar mai ɗaure 0.3% yana haifar da daidaitawar bayanin martaba ta atomatik-saboda rashin cikar cirewa yana haifar da kumburi; over-debinding yana gayyatar fashewa.
- Bayanan martaba na ƙayyadaddun yanki ne, ba takamaiman tanderu ba: Gidan famfo na silinda na piston yana samun raguwa a hankali ta hanyar 800-1000 ° C fiye da bututun yanki na bakin ciki. Muna daidaita lokutan zama bisa la'akari da yawan zafin jiki-ba babban ginshiƙi ba.
- Geometry bayan-sinter ba za a iya sasantawa ba: Kowane bangare na MIM yana fuskantar binciken CMM game da kiran GD&T-ba kawai girma ba. Muna auna lebur akan saman rufewa zuwa ± 1.2 µm, cylindricity akan mujallolin shaft zuwa 0.8 µm, da rashin ƙarfi (Ra) akan hanyoyin ruwa zuwa ≤0.4 µm - an tabbatar da su tare da profilometry na gani.
Wasu na iya jayayya cewa injinan CNC yana ba da daidaito mafi kyau fiye da MIM. Gaskiya - don ƙananan geometrics. Amma gwada riko da ± 0.015 mm concentricity a fadin coaxial bores biyar a cikin guda 316L bakin karfe famfo famfo, kowane tare da ciki zaren da kuma giciye-hauren mashigai mashigai. Yin injin wannan ɓangaren yana buƙatar saiti shida, canje-canje masu daidaitawa guda uku, da raɗaɗin zafi mara makawa. Sigar MIM? Bangaren kore ɗaya, sinter ɗaya, aiki na gamawa ɗaya-da 22% ƙananan farashi a juzu'i sama da pcs 500 / shekara. Mun tabbatar da hakan: kwata na ƙarshe, mun isar da 1,200 T800 alloy shaft rollers don tsarin winch abin hawa. Duk sun wuce gwajin nauyin aiki na 100% a 18,500 N axial force — sake aikin sifili.
Wannan amincin ya fito ne daga haɗin kai tsaye da za ku iya tabbatarwa. Gidan kayan aikin mu ba kawai MIM presses da sinter tanderu ba-har ma daidaitattun cibiyoyin CNC waɗanda ke da ikon jujjuya sassan CoCr masu ƙarfi a 85 HRC, tanda mai zafi wanda aka daidaita zuwa ± 2°C, da layin wucewa masu dacewa da ASTM A967. Lokacin da abokin ciniki ya aika zane don filogi na AMS 5387 tare da ramukan makafi da fuskokin rufewa, ba ma tambayar "Shin za ku iya yin shi?" Muna tambaya: "Mene ne yanayin damuwa mafi muni? Menene rayuwar sabis ɗin da ake tsammani? Wane yanayin rashin nasara ya sa ku farka?" Sa'an nan kuma za mu zaɓi mafi kyawun kayan abinci, yin kwaikwayon ɓarna a cikin Simufact Additive, gina ƙirar tare da taurare H13 karfe da tashoshi masu sanyaya, da kulle sigogin tsari kafin harbin farko.
Idan kuna kimantawa a mim karfe allura gyare-gyaren tsari factory, tsallake ƙasidu masu sheki. Tambayi: (1) rikodin rikodi da ke nuna bambance-bambancen yawa a cikin aikin samarwa, (2) Rahoton CMM wanda ya kwatanta as-sintered vs. gama geometry akan wani yanki mai kama da naku, da (3) shaidar takaddun shaida don ainihin ƙimar alloy ɗinku - ba kawai "ISO 13322-2 foda mai yarda ba." A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., waɗannan takaddun ba a kulle su a cikin majalisar fayil ba. An haɗa su zuwa kowane PO, an sabunta su a ainihin lokacin, kuma an raba su kafin amincewar kayan aiki. Domin daidaito ba sashe ba ne. Saitin tsoho ne.
