Lokacin da injiniyoyi suka bayyana cobalt 6 part factory iyawa, ba wai kawai neman injina suke ba - suna buƙatar kwanciyar hankali mai girma a ƙarƙashin matsin lamba 200 MPa, daidaiton microstructural a cikin batches na raka'a 500, da rashin haƙuri ga rarrabuwar carbide a cikin simintin AMS 5387. Wannan shine gaskiyar aiki a bayan abubuwan da aka gyara na cobalt alloy famfo da ake amfani da su a cikin tsarin injin ruwa na teku, manyan injin allurar man fetur, da masu kunna bawul na cikin teku. Mun ga ayyuka da yawa sun tsaya tsayin daka a matakin samfuri-ba daga ƙira mara kyau ba, amma daga ƙwarewar kayan da ba ta dace ba da sarrafa tsari.
Me yasa Cobalt Alloy 6 Ya Bukaci Fiye da Madaidaitan Shagunan CNC
Cobalt Alloy 6 (AMS 5387) ba "wani superalloy bane kawai." Cobalt tushe na 60%, 30% chromium, da tungsten/nickel matrix yana ba da juriya na musamman ga galling, gajiyar zafi, da lalata ruwa mai ruwa-amma a farashi mai tsada. Standard Mills hira. Yankunan masu wadatar Carbide suna karkatar da kayan aikin yanke. Yankunan da zafi ya shafa suna fashe yayin aikin rage damuwa bayan injin. Mun auna ƙimar lalacewa na kayan aiki 4.2 × mafi girma akan Co-6 da Inconel 718 a ƙarƙashin abinci iri ɗaya da saurin gudu. Nasarar ta ta'allaka ne akan abubuwa uku da ba za'a iya sasantawa ba: pre-machined microstructure control, adaptive multi-axis toolpath dabarun, da kuma ainihin lokacin sa ido na thermal yayin wucewar ƙarewa.
Shi ya sa ƙaddamar-zuwa-ƙasa haɗin kai yana da mahimmanci fiye da ƙarfin CNC na tsaye. Ma'aikatar cobalt 6 dole ne ta sarrafa cikakken sarkar - daga saka hannun jarin simintin simintin gyare-gyaren harsashi da sanyaya mai ƙarfi mai ƙarfi zuwa rage damuwa kafin roughing, sa'an nan CMM-shiryar yanke yanke tare da sanya lu'u-lu'u. Gidan famfo famfo na AMS 5387 na abokin ciniki ɗaya ya kasa gwajin aikin sau biyu. Tushen dalili? Mai simintin simintin gyare-gyaren ya yi amfani da sanyaya iska maimakon sarrafa tanda. Microcracks da aka kafa a iyakokin hatsi-wanda ba a iya gane shi ta hanyar dubawa ta gani, mai mutuwa a ƙarƙashin hawan keke. Gyara? Cikakkun abubuwan ganowa daga ɗanyen billet lot zuwa log ɗin maganin zafi na ƙarshe, wanda aka tabbatar ta ASTM E112 da AMS 2750E.
Ƙarfi huɗu waɗanda ke Rarraba Dogarorin Cobalt 6 Sashe na Masana'antu Daga Manyan Mashinan
- Layukan simintin gyare-gyare na kayan aiki: Ba wai kawai "muna karɓar takardun ku na Co-6 ba." Ƙarfin gaskiya yana nufin yin simintin saka hannun jari a cikin gida tare da iyawar-zuba ruwa, ingantaccen abun da ke tattare da harsashi yumbu, da nazari na gani na kowane nau'i na narkewa.
- Mallakar tsarin gauraye: Tushen Co-6 Sand-cast yana buƙatar shiri daban-daban fiye da nozzles-simintin saka hannun jari. Kamfanin cobalt 6 dole ne ya sarrafa duka biyu-kuma ya san lokacin da za a canza tsakanin su bisa kaurin bango, girman fasalin, da buƙatun dumama zafi.
- GD&T-sane da kayan aikin dubawa: Auna juriya na matsayi na 0.005 mm akan diamita na 120 mm Co-6 plug yana buƙatar fiye da CMM. Yana buƙatar dakunan gwaje-gwaje masu daidaita yanayin zafin jiki, ƙwararrun tubalan gage waɗanda za a iya gano su zuwa NIST, da masu aiki da aka horar da su a ASME Y14.5-2018 don jure bayanan martaba-ba kawai ma'auni ba.
- Ingantacciyar aiki fiye da lissafi: Shin wannan cobalt alloy toshe hatimi a 450 ° C da 180 mashaya? Shin bututun ƙarfe yana kula da kusurwar feshi bayan zagayowar zafi 10,000? Kamfanonin sassan cobalt 6 na gaske suna gudanar da ingantattun gwaje-gwajen rayuwa - ba kawai ƙididdigar ƙira ba.
Abin da Masu Saye ke Kallon-kuma Ku biya Daga baya
Wasu ƙungiyoyin sayayya suna mayar da hankali kan farashin da aka nakalto kowane yanki. Amma muna bin diddigin farashin gazawar a cikin ayyukan 42 Co-6 sama da shekaru biyar. Manyan direbobin tsadar ɓoyayyun uku sune: (1) zana bita da aka tilastawa ta hanyar simintin gyare-gyaren kayan da ba a ba da rahoto ba; (2) niƙa na biyu da ake buƙata saboda rashin daidaituwa kamar yadda aka yi tauri; da (3) sake yin aiki na ƙarshen zamani daga kuskuren GD&T-musamman akan nassoshin datum masu haɗaka da suka haɗa da sifofin silinda da tsarin tsari.
Ɗaya daga cikin OEM na Turai ya biya 22% ƙasa da gaba don sassan famfo na cobalt 6 daga mai siyarwa mai rahusa. Sannan an kashe Yuro 187,000 wajen maye gurbin filin bayan yashewar kujerar bawul. Tushen dalili? Tazarar tsaka-tsakin tsaka-tsakin da ba a sarrafa shi ba a cikin simintin gyare-gyare-wanda aka auna a 48 μm tare da ƙayyadadden ≤32 μm. Wannan bambance-bambancen ya rage daidaituwar rarrabuwar carbide, yana haɓaka lalacewa. Tabbatattun rahotannin kayan ba su isa ba. Suna buƙatar sassan giciye na ƙarfe a kowace kuri'a-tare da takaddun ƙa'idodin etching da rajistan ayyukan tantance software na hoto.
Gina Dogara a Manyan Haruffa Cobalt Manufacturing
Kamfanin cobalt 6 na masana'anta yana samun sahihanci ta hanyar gaskiya - ba takaddun shaida akan bango ba. Lokacin da abokan ciniki suka aika zane, muna amsawa a cikin sa'o'i 48 tare da: (1) tabbatar da kayan aiki gami da rahotannin gwajin niƙa; (2) Bayanan yuwuwar aiwatar da simintin gyare-gyaren da ke nuna yuwuwar zazzafan hawaye ko haɗarin raguwa; (3) GD&T ingantacciyar kiran kira tare da shawarwarin duba hanyoyin; da (4) bayyanannen jerin abubuwan "ba-tafi" - fasalulluka ba za mu yi ƙoƙari ba tare da haɗin gwiwar injiniya ba, kamar radi na ciki da ke ƙasa da 0.8 mm a cikin T800-grade Co-6.
Ba mu yi alƙawarin "lokacin jagora mafi sauri ba." Muna ba da garantin ingantattun windows isarwa saboda aikin mu na dogaro ya haɗa da ƙarfin buffer a cikin tanda na maganin zafi da sel kayan aikin Co-6 - babu saitin da aka raba tare da bakin karfe ko aluminum. Kowane ɓangaren cobalt 6 yana ɗauke da cikakkiyar ganowa: lambar zafi mai ɗanɗano, ID na jefa kuri'a, sigar shirin CNC, ID na ma'aikaci, da tambarin lokacin dubawa na ƙarshe. Idan wani sashi ya gaza a sabis, bayanan yana wanzu-ba azaman tunani ba, amma azaman ginin gine-gine.
Neman gaba, gaba na gaba ba kawai juriya ba ne. Ikon tsari ne na tsinkaya: saka thermocouples a cikin simintin simintin gyaran kafa don ciyar da bayanan ingantaccen lokaci cikin zaɓin mashin ɗin injin. Wannan shine yadda masana'anta na cobalt 6 na gaskiya ke tasowa - daga masana'anta mai amsawa zuwa abokin aikin injiniya mai himma. Domin lokacin da rayuka ko muhimman ababen more rayuwa suka dogara da filogi na cobalt, dogaro ba ƙayyadaddun bayanai ba ne. Shi ne kawai ma'auni mai mahimmanci.
