Lokacin da injiniyoyi suka bayyana Stella 20 don manyan kujerun bawul masu zafin jiki, masu famfo famfo, ko zoben bututun injin turbine, ba wai kawai duk wani abin da ke da alaƙa da cobalt ba—suna zaɓar wani abu wanda ke buƙatar daidaito a cikin ƙarfe da machining. Amma tushen abin dogara Stelite 20 factory abokan hulɗa ya kasance ƙalubale mai tsayi. Mun ga jinkirin ayyuka da yawa-ba ta kurakuran ƙira ba, amma ta rashin daidaiton jiyya na zafi, danyewar da ba a tabbatar da shi ba, ko juzu'i mai ƙima bayan sauƙaƙan damuwa. A cikin tsarin na'ura mai aiki da karfin ruwa da ke aiki a mashaya 700+, karkacewar 0.015 mm a cikin kujerar filogi na Stellite 20 na iya haifar da zubar da wuri. Bashi ɗaya tare da keɓantaccen nau'in carbon ɗin ya lalata duk ayyukan samarwa don famfo OEMs na ketare.
Me yasa Stelite 20 Ba kawai "Wani Superalloy bane"
Stellite 20 ba a buga tambarin sa daga jigon cobalt-chrome. Ayyukansa sun rataya ne akan tsauraran matakan da suka dogara da juna hudu: chromium (28-32%), tungsten (4-6%), carbon (0.2-0.4%), da carbide morphology. Kau da kai a wajen waɗannan tagogin-kuma musamman idan cibiyar sadarwar eutectic carbide ta samar da ƙaƙƙarfan makada masu haɗin kai maimakon lallausan tarwatsawa-kun rasa juriya ga galling, micro-pitting, da thermal gajiya. Binciken gazawar duniya na zahiri yana nuna yawancin gazawar filin suna komawa zuwa tushen dalili guda ɗaya: rashin daidaituwar kayan abu, ba juzu'i ba. Shi ya sa masu amfani da manyan matakan ba sa tambayar "Shin za ku iya na'urar Stelite 20?" Suna tambayar "Ta yaya kuke tabbatar da kowane ƙananan simintin simintin gyare-gyare? A ina aka samu ingot ɗin AMS 5387 da aka ba da izini? Kuna riƙe cikakken bayanan sinadarai da tarihin zafi a kowane simintin?"
Abin da Ya Raba Masana'antar Gaskiya 20 Na Gaskiya Daga Babban Injin Injiniya
A gaskiya Stelite 20 factory ya mallaki sarkar tsari-ba kawai yanke karshe ba. Yana farawa da bokan AMS 5387 ko T800-grade billet, wanda aka tabbatar ta hanyar OES da PMI kafin narkewa. Yin simintin saka hannun jari dole ne a yi amfani da gyare-gyaren harsashi na yumbu waɗanda ke da ikon riƙe ±0.05 mm haƙuri akan sassan bakin bakin bango-babu gajerun hanyoyin simintin yashi. Maganin zafi ba na zaɓi ba ne; warware matsalar annealing a 1175 ° C ± 10 ° C bi da sarrafawa iska sanyaya wajibi ne don narkar da sakandare carbides ba tare da overgraining. Sa'an nan kuma ya zo da wuya sashi: machining. Taurin Stellite 20 (40-45 HRC as-cast) da yanayin aiki mai ƙarfi suna buƙatar tsayayyen dandamali na CNC 5-axis tare da sanyaya ta hanyar spindle, kayan aikin carbide wanda aka ƙera don alloys na cobalt, da ƙimar ciyarwar da aka daidaita don guje wa haɓakar haɓaka. Kuskure ɗaya-mai sakawa maras ban sha'awa, lokacin tsawan wuce gona da iri-yana ƙirƙira microcracks na sama waɗanda suka zama wuraren farawa ƙarƙashin hawan keke.
- Abubuwan ganowa: Kowane sashi na Stelite 20 yana ɗauke da ID na musamman da ke da alaƙa da narkewar log ɗin sa, jadawalin zagayowar zafi, da rahoton binciken CMM.
- Kwanciyar kwanciyar hankali: Taimakon tashin hankali bayan aikin injin yana hana yaƙe-yaƙe a cikin ɓangarorin sirara ko dogayen rassan.
- Mutuncin saman: Babu niƙa konewa; duk kammalawa yana amfani da matakai masu ƙarancin zafi kamar honing ko electropolishing
- Tabbatar da aiki: Mahimman sassa suna fuskantar gwajin matsa lamba, duba mai shiga rini, da taswirar taurin—ba kawai duban gani ba
Farashin Sassauta-Da Me Yasa Ba Ya Da Kyau
Wasu masu siye suna bin ƙananan ƙididdiga ta hanyar karɓar kwatankwacin Stellite 20 da aka jefa daga tarkacen da ba a tabbatar da su ba ko na'ura a kan kayan aikin kantin aiki da yawa. Sakamakon? Mafi girman jimlar kuɗin mallaka. Mun bin diddigin OEM na'ura mai aiki da karfin ruwa na Arewacin Amurka guda uku wadanda suka canza masu kaya don adana 12% kowace raka'a. A cikin watanni 18, biyu sun ba da rahoton 23% mafi girman ƙimar gazawar filin a cikin gidaje na famfo na piston. Tushen tushen: rarrabawar carbide mara daidaituwa ya haifar da saurin lalacewa a yankin bugun jini. Maye gurbin raka'o'in da suka gaza farashin 4.7× farashin ɓangaren asali - gami da faɗuwar lokaci, aiki, da da'awar garanti. A halin yanzu, abokan ciniki waɗanda suka yi haɗin gwiwa tare da haɗin kai tsaye Stelite 20 factory Ayyuka sun ga ma'anar lokaci tsakanin gazawar sun karu da 310% a cikin majalissar famfo da manifolds.
Neman Gaba: Inda Madaidaicin Haɗu da Hasashen
Iyaka ta gaba ba kawai kera kayan aiki masu wahala ba - yana haɗa tsinkaya cikin kowane mataki. Manyan masana'antun Stellite 20 yanzu sun haɗa nau'ikan tagwayen dijital na dijital: simintin simintin gyare-gyare yana tabbatar da cikar ƙirƙira da ƙarfafawa kafin zubawa na farko; Hoto na thermal a cikin tsari yana tabbatar da dumama iri ɗaya yayin annealing; Shirye-shiryen hanyar CMM mai taimakon AI yana rage lokacin dubawa da 38% ba tare da sadaukar da ɗaukar hoto ba. Don abubuwan da ke da mahimmancin manufa, wannan yana nufin abubuwan ban mamaki a FAT-ko a fagen. Kamar yadda kayan aikin mai ke matsawa zuwa rayuwar sabis na sa'o'i 20,000 kuma famfunan ruwa na cikin teku suna aiki a 150 ° C ci gaba, dogaro ba buri bane. An ƙirƙira shi, tabbatarwa, da kuma rubuce-rubucen-ɓangare ta sashi, da yawa da yawa, kowace shekara.
