Lokacin da injiniyoyi suka ƙididdige sassan mashin ɗin cobalt don famfo na hydraulic, bawul ɗin ƙasa, ko manyan kayan winch, ba kawai zaɓin kayan aiki bane - suna yin fare akan kwanciyar hankali a ƙarƙashin matsin lamba 300 MPa, juriya ga galling a 650 ° C, da daidaiton microstructural a cikin batches 500. Shi ya sa neman abin dogara Cobalt gami machining sassa factory da wuya ya ƙare da ƙididdiga farashin. Yana farawa da lissafin ƙarfe, sarrafa tsarin axis da yawa, da rashin haƙuri ga rarrabuwar carbide a cikin simintin gyare-gyare na AMS 5387 ko T800.
Me yasa alluran cobalt ke buƙatar fiye da daidaitaccen ƙarfin CNC
Cobalt-tushen superalloys kamar Stellite 6B, Haynes 188, da na mallaka T800 formulations tsayayya lalacewa da lalata-amma kuma suna niƙa 3-5 × sauri fiye da bakin karfe. Mun ga shagunan suna faɗin hannun rigar cobalt bututun ƙarfe kawai don kawar da kashi 40% na sassan da aka fara gudanar da su saboda ɓacin rai da ke haifar da zazzaɓi a kan ɓarna na ciki. Tushen dalili? Saitunan kayan aiki masu tsauri waɗanda ke yin watsi da rashin daidaituwar haɓakar thermal tsakanin cobalt (10.4 µm/m·K) da faranti na aluminium. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., kowane aikin cobalt yana farawa da taswirar ramuwa ta thermal - wanda aka tabbatar ta hanyar sikanin infrared mai aiki yayin wucewar roughing. Wannan shine yadda muke riƙe ± 0.008 mm zagaye akan 120-mm-diamita cobalt gami matosai yayin da muke kiyaye Ra ≤0.4 µm akan saman rufewa.
Ƙarfi guda huɗu waɗanda ba za a iya sasantawa ba na masana'antar kayan aikin cobalt alloy na gaske
Wurin da ke da'awar ƙwarewar cobalt dole ne ya isar da fiye da yanke saurin. Dangane da shekaru 12 na samar da kayan aikin famfo, waɗannan iyakoki guda huɗu sun raba tabbataccen abokan hulɗa daga masu siyarwa masu fata:
- Abubuwan ganowa zuwa lambar zafi- ba kawai certs na niƙa ba. Ayyukan Cobalt yana rataye akan ainihin carbon da tungsten abun ciki; 0.02% karkacewar carbon a cikin AMS 5387 yana jujjuya taurin daga 42 HRC zuwa 49 HRC, yana haɗarin karaya mai rauni a cikin lodin keken keke.
- Haɗin aikin simintin gyare-gyare-zuwa-inji-Babu hannun jari tsakanin masana'anta da kantin injin. Gidajen cobalt na simintin saka hannun jari suna raguwa ba tare da annabta ba sai dai idan na'urorin injina suna nuni da fasalulluka na simintin datum. Muna injin dakunan silinda a cikin sa'o'i 72 na shakeout, ta yin amfani da CMM iri ɗaya wanda ya tabbatar da lissafin simintin gyare-gyare.
- Daidaita maganin zafi- Maganin warware matsalar dole ne ya rigaya aikin injina na ƙarshe don rage damuwa. Amma over-annealing yana rage chromium carbides, yana daidaita juriya na lalata. An haɗa rajistan ayyukan tanderun mu tare da lambar serial na kowane ɓangaren kuma an haɗa su da rahotannin CMM bayan zafi.
- Tabbatar da GD&T kafin yanke- musamman don jurewar bayanan martaba akan nozzles na cobalt. Ƙirar bayanin martaba na 0.05 mm akan wurin zama na conical ba zai yiwu ba tare da daidaitattun injina na ƙarshe. Muna kwaikwayi jujjuyawar hanyar kayan aiki a cikin VERICUT, sannan muna inganta tare da na'urar daukar hoto na gani-ba kawai CMMs ba.
Inda daidaitattun masu samar da kayayyaki suka kasa-da kuma yadda masana'antun da aka fi mayar da hankali kan amsawa
Wasu masana'antun suna ɗaukar cobalt kamar taurin karfe: ciyarwa iri ɗaya, mai sanyaya iri ɗaya, mitar dubawa iri ɗaya. Wannan ya gaza saboda ƙarancin ƙarancin wutar lantarki na cobalt yana kama zafi a gefen yanke. Mun lura da cobalt alloy 6 famfo sassa na abokin ciniki guda ɗaya sun kasa gwajin gishiri-spray bayan sa'o'i 200-ba daga lahani na kayan abu ba, amma daga ƙananan fashe-fashe da aka jawo ta hanyar matsa lamba mara kyau-sanyi (wuce mashaya 12 akan 3-mm-diamita na ciki drills). Maganin mu? Mafi ƙarancin lubrication (MQL) tare da mai na tushen ester, wanda aka kawo a 80 psi ta hanyar nozzles, aiki tare da sandar RPM. Mutuncin saman ya inganta 70%, kuma rayuwar kayan aiki ta ninka sau biyu.
Wani rata gama gari: gwajin aiki. Filogin cobalt ba ya “yi” lokacin da girma ya wuce. Dole ne ya hatimi a mashaya 414 yayin jujjuyawar rpm 120 akan kujeru 420 mara nauyi. Muna gwada kowane kuri'a akan na'urorin lantarki da aka gina ta al'ada waɗanda ke yin kwafin ainihin juzu'in sabis, zafin jiki, da hawan matsin lamba-bayanan da aka shiga da rabawa tare da abokan ciniki.
Zaɓin masana'anta kayan aikin cobalt alloy machining sassa: jerin abubuwan bincike
Kafin aika zane, yi waɗannan tambayoyi guda biyar-kuma suna buƙatar cikakkun amsoshi:
- Shin za ku iya samar da bayanan sake zagayowar zafin zafi don ɗimbin AMS 5387 uku na ƙarshe da aka aika?
- Menene matsakaicin tsayinku mara tallafi don ƙoramar cobalt na diamita 8-mm - kuma wane tsarin kayan aiki ya cimma shi?
- Kuna yin gwajin ultrasonic bayan-machining akan mahimman sassan da suka fi kauri fiye da 25 mm?
- Ta yaya kuke tabbatar da ingancin saman kan kujerun cobalt bawul ɗin injina? (Amsoshin da aka yarda da su: ma'aunin farin-etch, taswirar gradient microhardness, ko SEM fractography-ba kawai karatun Ra ba.)
- Shin za ku iya riƙe matsayi na gaskiya na ± 0.015 mm akan diamita na coaxial guda uku a cikin saitin guda ɗaya don nadi na tsakiya mai tsayi na 180-mm cobalt?
Idan kowace amsa ba ta da fa'ida, jinkiri, ko nassoshi "daidaitattun hanyoyin," ci gaba da dubawa. Cobalt baya gafarta zato.
Bayanin ƙarshe: daidaito ba sashe ba ne - jere ne
Mafi ƙaƙƙarfan abubuwan haɗin cobalt suna fitowa daga ƙaƙƙarfan haɗakarwa tsakanin kimiyyar abin duniya, injiniyoyin kimiyyar lissafi, da ingantaccen aiki. A QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., Wannan yana nufin jefa chemists daidaita abun ciki na vanadium dangane da machining na mako mai zuwa, masu shirye-shiryen CNC suna daidaita ƙimar ciyarwa ta na'urori masu auna siginar kayan aiki na gaske, kuma injiniyoyi masu inganci sun ƙi wani ɓangaren da ke wucewa duk GD&T yana bincika idan farfajiyar sa a waje -500 MP0 damfara don matsawa. Wannan jeri-kayan abu → tsari → ma'auni → aiki - shine dalilin da yasa injiniyoyi ke dawowa don haɗin gwiwar masana'anta na cobalt alloy machining sassa na masana'anta kowace shekara. Ba a auna madaidaicin a cikin microns kadai. Ana auna shi cikin aminci.
