Lokacin da famfon na'ura mai aiki da karfin ruwa ya kasa a cikin rijiyar mai na teku-ko matsi mai tsafta yayin gwaji mai tsayi-tushen sanadin sau da yawa yana komawa zuwa yanke shawara ɗaya: zaɓin abu. Masana'antar kayan haɗin gwal na tushen cobalt ba lakabin mai kaya bane kawai. Garanti ne na aiki don tsarin inda girgiza zafin jiki, lalacewa mai lalacewa, da dorewar nauyin 20,000-psi ke kawar da gefe don kuskure.
Me yasa alluran cobalt ke buƙatar masana'anta na musamman-ba injinin gabaɗaya ba
Cobalt-chromium superalloys kamar AMS 5387 da T800 ba su da “wuya ga inji.” Suna da ƙiyayya ta ƙarfe: ƙarfin aiki da sauri fiye da kayan aikin da zai iya yanke, da insulating isashen zafi don tarko a cikin keɓancewa, da microstructurally mai kula da ragowar damuwa ko sanyi mara daidaituwa. Mun ga shagunan suna ƙoƙarin nozzles na T800 akan daidaitattun injinan CNC-kawai don kawar da kashi 60% na labarin farko da ke gudana daga ƙananan fashewa yayin maganin zafi na ƙarshe. Nasara yana buƙatar fiye da abubuwan da ake saka carbide. Yana buƙatar haɗe-haɗe-haɗe-haɗe-haɗe-haɗen aikin aikin injina, sarrafa yanayi mai sarrafawa kafin roughing, da hanyoyin daidaitawa na CMM waɗanda ke bin jujjuyawar lokaci na gaske a cikin gidajen famfo mai katanga.
Wannan shine dalilin da ya sa iyawar masana'anta na tushen kayan gami na cobalt na gaskiya yana farawa sama-a cikin gano kayan. Kowane billet na AMS 5387 da muke aiwatarwa yana ɗaukar cikakkun rahotannin gwajin niƙa, tare da tabbatar da ƙididdigar gani da ASTM E1099 da girman hatsi da aka tabbatar ta ASTM E112. Babu maye gurbin tsari. Babu "kwatankwacin maki" maye gurbin. Idan zanen ku ya ƙayyade AMS 5387, kuna samun AMS 5387-ba kama da 0.3% ƙasa da chromium ba da rashin ƙarfi mai zafi.
Ƙarfi huɗu waɗanda ba za a iya sasantawa ba a bayan sassan cobalt masu mahimmancin manufa
Abokin amintaccen abokin tarayya dole ne ya sadar da daidaito-ba sau ɗaya kawai ba, amma a cikin ayyukan samar da raka'a 500 da tsammanin rayuwar sabis na shekaru 10. Waɗannan su ne iyawar da muka inganta kafin faɗi:
- Kwanciyar kwanciyar hankali ta hanyar sarrafa matasan: Yashi-simintin cobalt gami matosai suna raguwa ba zato ba tsammani. Maganin mu? Simintin simintin saka hannun jari tare da saman rufewar CNC da aka gama - riƙon ± 0.015 mm akan diamita na 120-mm ba tare da murdiya bayan injina ba.
- Mutuncin saman saman ƙarewa: Ra 0.4 µm yana nufin kome ba idan ƙaramar tsagewar ƙasa tana gayyatar gajiya da wuri. Muna amfani da ƙananan-RPM, wucewar ƙarewar ciyarwa mai girma tare da kayan aikin da aka bi da su ta hanyar cryogenically-kuma muna tabbatar da amincin ƙasa ta hanyar zane-zanen SEM na giciye akan labaran farko.
- Ingantaccen aiki fiye da GD&T: Ba a yarda da bututun ƙarfe na cobalt ba bayan binciken CMM. Yana jurewa daidaitawar kwarara a 350 ° C, gwajin yashwa tare da 80-grit silica slurry a 12 m/s, da duban ultrasonic don porosity na ciki ta ASTM E1961 Level 3.
- Ganowa wanda ke yin taswirori zuwa binciken gazawar: Kowane bangare yana jigilar kaya tare da takardar shedar QR mai haɗa lambar zafi, rajistan ayyukan tanderu, tamburan lokutan dubawa, da ID na mai aiki. Lokacin da gazawar filin ta faru, injiniyoyi ba sa tsammani-suna keɓe tushen tushen cikin sa'o'i, ba makonni ba.
Inda masu samar da kayayyaki suka gaza - kuma ƙwararrun masana ke bayarwa
Wasu masana'antun suna ɗaukar allunan cobalt a matsayin "wani ƙaramin ƙarfe ne kawai." Suna ambato bisa nauyi, ba tarihin zafi ba. Suna fitar da simintin simintin gyare-gyare zuwa wuraren kafa na ɓangare na uku ba tare da gogewar cobalt ba - sannan suna gwagwarmaya tare da tsarin dendritic mara daidaituwa. Suna tsallake ɓacin rai-damuwa kafin yin injina na ƙarshe, suna haifar da yaƙi a cikin gidajen piston famfo Silinda bayan taro.
Mun sami abokan ciniki sun canza tsakiyar aikin bayan gano mai samar da su na farko sun yi amfani da tarkacen cobalt da aka sake sarrafa tare da bayanan bayanan abubuwan da ba a tantance ba. Sakamako? Galling da wuri a cikin winch center shaft rollers a karkashin cyclic torsional load. Martanin mu ba kawai maye gurbin ba ne - nazari ne na ƙarfe na haɗin gwiwa, sake fasalin lokutan jiyya na zafi, da sake fasalin hanyoyin isar da sanyi a cikin shirin CNC. Wannan haɗin kai ne a tsaye: simintin gyare-gyare, injina, maganin zafi, da NDT a ƙarƙashin rufin ɗaya, tare da ilimin tsarin da aka raba-ba handoffs ba.
Zaɓin masana'anta na kayan haɗin gwal na tushen cobalt: tambayoyi uku waɗanda ke raba abokan hulɗa da dillalai
Kafin shiga NDA, tambayi waɗannan-ba don amsoshi na tallace-tallace ba, amma don takaddun shaida:
- "Nuna mani kuri'a uku na AMS 5387 na ƙarshe-takaddun shaida, rajistan ayyukan zafi, da rahotannin CMM na ƙarshe." Daidaituwa yana nunawa a cikin takarda, ba alƙawura ba.
- "Menene matsakaicin tsayinku mara tallafi na sandunan T800 a Ø45 mm - kuma ta yaya kuke sarrafa madaidaiciya yayin juyawa?" Iyakoki na zahiri suna bayyana balaga tsari.
- "Idan ƙirar gidan famfo ɗinmu tana buƙatar bangon 0.8-mm kusa da kusurwar ciki na 90°, menene ƙaramin daftarin ku - kuma ta yaya kuke tabbatar da cika mutunci a wannan yankin?" Wannan yana gwada gwanintar simintin gyare-gyare, ba kawai ƙwarewar injina ba.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana aiki da masana'antar samarwa a Qingdao wanda aka tabbatar da ISO 9001: 2015, tare da ƙwararrun sel na aikin cobalt-alloy, na'urori masu aunawa na gani a cikin gida, da injunan auna daidaitawa da ke tafiyar da software na PC-DMIS. Fayil ɗin ta ya haɗa da nozzles na cobalt alloy don fafutuka masu fashewa mai ƙarfi, AMS 5387 famfo sassan da ke saduwa da buƙatun API 6A, da abubuwan haɗin T800 na al'ada don samfuran sarrafa ƙasa. Kamfanin yana hidima ga abokan cinikin masana'antu a duk Arewacin Amurka, Turai, da Kudu maso Gabashin Asiya - suna ba da samfura a cikin kwanaki 12, umarni na matsakaici a cikin makonni 6-8, tare da cikakkun abubuwan ganowa da bin ƙa'idodin da aka gina a kowane mataki.
Makomar ƙarfin masana'anta na haɗin gwal na kayan haɗin gwal ba ya ta'allaka ne a cikin manyan injuna - amma a cikin haɗin kai tsakanin ƙarfe, injiniyoyin kimiyyar lissafi, da ingantaccen aiki. Yayin hawan hawan tsarin da tazarar sabis, ba za a auna bambanci tsakanin abin yarda da manufa-mahimmanci a cikin microns ba. Za a auna shi a cikin lokacin aiki, iyakokin aminci, da jimillar farashin mallaka. Zaɓi daidai.
