Lokacin da kuka ji 'MIM powdery metallurgy', hoton nan da nan shine sau da yawa na waɗannan cikakke, ƙanana, rikitattun sassa suna jujjuya layi mai sarrafa kansa. Maganar ƙasida kenan. Gaskiyar, wanda na zauna tare da shi tsawon shekaru, ya fi muni, ya fi muni, kuma a zahiri, ya fi ban sha'awa. Ba wai kawai game da latsawa da sintering ba; Tattaunawa akai-akai ne tsakanin halayen kayan abinci, kayan aiki, da yanayin tanderun a wannan rana. Yawancin sababbi, har ma da wasu masu siye, suna tunanin harsashi ne na sihiri ga kowane hadadden siffa, suna yin la'akari da ƙayyadaddun ƙayyadaddun abubuwan tattara abubuwa da tsarin ɗaure. Wannan tazara tsakanin hasashe da mugun nufi shine inda ainihin aikin ke faruwa.
The Core Dance: Feedstock da Kayan aiki
Zuciyar MIM ba foda ba ce kaɗai ba; kayan abinci ne — wannan hadaddiyar cakuda foda mai kyau da tsarin ɗaure mai nau'i-nau'i da yawa. Samun wannan danko daidai ya fi fasaha fiye da kimiyya wani lokaci. Kuna iya samun mafi kyawun gas-atomized foda 17-4PH, amma idan tsarin daurin ya kashe ta ɗan juzu'i, za ku ga batutuwa a cikin gyare-gyare, kamar jetting ko cika cika, wanda kawai ke nunawa yayin ƙaddamarwa. Na tuna da wani aiki don maƙallan kayan aikin tiyata inda muka yi fama da alamar nutsewa tsawon makonni. Mai laifin ba zafin jiki ba ne ko matsa lamba, amma ɗan rashin daidaituwa a cikin pellet ɗin abinci yana haɗuwa daga mai samar da mu. Ya mayar da mu zuwa murabba'i ɗaya.
Kuma kayan aiki. Mutane suna raina lalacewa akan ƙirar MIM. Saboda kuna allurar slurry mai ɓarna, fasali masu mahimmanci, musamman waɗancan hakora masu kyau a kan ƙaramin kayan aiki don madaidaicin mai kunnawa, na iya dushewa da sauri fiye da yin gyare-gyaren filastik. Kuna buƙatar yin shiri don hakan, gina cikin alawus, ko saka ƙarfen kayan aiki mai ƙarfi daga wurin tafiya. Kudi ne wanda sau da yawa ke ɓacewa a cikin maganganun farko.
Wannan shine inda abokin tarayya mai zurfin tarihin abin duniya ke da mahimmanci. Kamfanin kamar Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), alal misali, yana kawo shekaru da yawa na ƙwarewar ƙarfe daga simintin saka hannun jari da injina zuwa tebur. Yayin da babban shafin su a tsingtaocnc.com dalla-dalla aikin su tare da gami, cewa tushen ilimin yana da mahimmanci. Lokacin da kuka sarrafa narkakkar superalloys, kun fahimci tsarin hatsi da sauye-sauyen lokaci a matakin da ke ba da bayanin yadda kuke tunkarar ɓarna. MIM foda karfe bangaren da aka yi daga gida gami da gawa. Yana da wani tsari daban-daban, amma maƙasudin ƙarfe iri ɗaya ne.
Matakan Yin-ko-Karshe: Ƙaddamarwa da Ƙarfafawa
Wannan shine ainihin akwatin baƙar fata na MIM. Katalytic debinding, kaushi debinding, thermal-kowannensu yana da nasa ramukan. Da sauri sosai, kuma kuna samun tsagewa ko kumburi yayin da mai ɗaure ke ƙoƙarin tserewa. Jinkirin ya yi yawa, da tankunan samar da kayan aikin ku. Na ga sassan suna fitowa daga ma'aunin zafi da sanyi suna kama da kamala, kawai don yin bala'i a cikin tanderun da ke murƙushewa saboda alamar abin da ya rage ya haifar da matsin lamba na ciki. Wani kallo ne mai ratsa zuciya.
Sintering shine inda sihiri da ta'addanci ke haɗuwa. Ba wai kawai kuna narkewa ba; kuna sauƙaƙe yaduwar atomic a cikin iyakokin barbashi. Bayanan yanayin zafi, yanayi (hydrogen, nitrogen, vacuum), da lokaci sune komai. Don ɓangaren bakin karfe, 'yan digiri masu tsayi ko tsayi mai tsayi na iya haifar da haɓakar hatsi mai yawa, yana kashe kayan aikin injiniya. Samun goyon bayan sintering dama don hana murdiya wani tsarin fasaha ne. Ba kawai sanya sassa a kan farantin lebur ba.
Wannan yana danganta baya ga ƙwarewar kayan aiki. Asalin QSY a cikin fitar da allurai na musamman kamar tushen cobalt da na tushen nickel yana da dacewa kai tsaye anan. Waɗannan kayan aiki ne masu wayo don shiga cikin MIM. Sanin yanayin zafi mai ƙarfi/liquidus, yadda suke mu'amala da carbon yayin sintering, da maganin zafi na ƙarshe na buƙatu daga hangen nesa na simintin ya ba ƙungiyar muhimmiyar farawa. Yana hana kuskuren rookie na gargajiya na magance duk foda na ƙarfe iri ɗaya a cikin tanderun.
Haɗin kai tare da Ayyukan Sakandare
Da kyar wani bangare na MIM ke fitowa daga bel din da ke shirin jigilar kaya. Kusan koyaushe, kuna buƙatar injinan sakandare. Wannan batu ne mai mahimmanci. Matsakaicin raguwa, yawanci 15-20%, ana iya faɗi amma ba daidai ba. Don haka, kun ƙirƙira shi, kuna barin mu'amala mai mahimmanci kamar zaren zare ko rufe saman a matsayin filaye masu ɓarna, ko ku bar haja don wucewar mashin ɗin ƙarshe.
Anan ne aikin haɗin gwiwa a tsaye yana nuna ƙimarsa. Idan mai bada MIM ɗin ku shima yana da ƙarfi na CNC, kamar abubuwan QSY tare da sabis ɗin injin ɗin su na CNC, madaidaicin amsa yana da ƙarfi. Ƙungiyar mashin ɗin za ta iya gaya wa ƙungiyar MIM, Waɗannan fasalulluka na ganowa suna canzawa ta hanyar 0.05mm batch-to-batch, shin za mu iya daidaita kayan aikin kayan aiki ko kayan aiki? Wannan haɗin gwiwar na ciki yana magance matsaloli da sauri fiye da jigilar sassan kore zuwa shagon injuna na waje wanda bai fahimci abubuwan da ake aiwatarwa ba.
Na yi aiki a jikin masu haɗawa inda madaidaicin ramukan fil ɗin ke buƙatar aikin reaming bayan sinter. Da yake an yi injin ɗin a cikin gida, tare da injiniyoyi daga ɓangarorin biyu suna magana yau da kullun, ya ba mu damar yin gyare-gyaren tsarin ciyar da abinci kaɗan don inganta injina ba tare da ɓata ɗimbin yawa ba. Ya juya ɓangaren matsala zuwa abin dogaro.
Zaɓin Abu: Ba Zabin Katalogi kaɗai ba
Zaɓin kayan don a MIM foda karfe bangare baya kama da karba daga menu. Ee, kuna da ma'auni: 316L, 17-4PH, Fe-Ni alloys. Amma daidaiton foda mai yawa-zuwa-yawa, rarraba girman barbashi (PSD), da abun cikin iskar oxygen suna da yawa. Matsakaicin PSD zai iya ba da mafi kyawun shiryawa da ƙarewar ƙasa mai santsi amma zai iya kashe ƙarin 30%. Don aikace-aikacen sawa mai girma, ƙila kuna kallon karafan kayan aiki kamar M2, amma sai zagayowar keɓancewa da haɓakar ku sun zama masu hankali sosai.
Wannan shi ne wani yanki inda m gami gwaninta biya kashe. Kamfanin da ya ƙware wajen yin simintin ƙarfe da ƙarfe na musamman zai sami ma'anar ƙaƙƙarfan buƙatun aiki na ƙarshe. Ba su da yuwuwar yin ƙayyadaddun ƙayyadaddun superalloy mai tsada don aikin da bakin karfe 400 da aka gyara zai iya ɗauka, ko akasin haka. Suna fahimtar juriya na lalata, matsanancin zafin jiki, kuma suna sawa ba kawai azaman ƙimar takardar bayanai ba, amma azaman halayen zahirin duniya daga tarihin simintin su. Wannan hukuncin yana da matukar amfani yayin ba da shawara akan zaɓin kayan MIM.
Duban Gaskiya: Lokacin da MIM Ba Amsar ba ce
Wani ɓangare na zama ƙwararre a wannan fagen shine sanin lokacin da za a ce a'a. MIM tana da hazaka don babban girma, hadaddun, ƙananan-zuwa matsakaita sassa. Amma idan lissafi mai sauƙi ne mai sauƙi, juya zuwa injina. Idan kuna buƙatar cikakku, ƙarancin isotropic ba tare da ragowar porosity don babban bawul ɗin sararin samaniya ba, ƙila har yanzu kuna iya kasancewa cikin yankin simintin saka hannun jari. Idan girma na shekara-shekara shine guda 10,000 kawai, farashin kayan aiki na iya kashe ROI.
Na kasance wani ɓangare na ayyukan da muka yi ƙoƙarin tura MIM cikin aikace-aikacen da bai dace da shi ba, ya ruɗe ta da rikitarwa. Ɗayan babban shingen tsari ne. Mun gudanar da ɓarnawar ɓarna, amma daidaiton sashi-zuwa-bangare a cikin kayan aikin injiniya bai yi ƙarfi ba don gwajin gajiyar abokin ciniki. Mun ƙare haɗaɗɗen-amfani da MIM don hadadden cibiya sannan mu yi walda a kan sandar da aka yi wa hannu. Ya yi aiki, amma darasi ne a cikin iyakokin tsari.
A ƙarshe, nasara MIM foda karfe game da dacewa. Kayan aiki ne mai ƙarfi a cikin akwatin kayan aikin masana'anta, amma ba kaɗai ba. Mafi kyawun sakamako ya fito ne daga abokan haɗin gwiwa waɗanda suka fahimci duk faɗin wuri-daga foda zuwa gama kayan aiki-kuma suna iya kewaya kasuwancin-kashe tare da fayyace-ido, pragmatism-bene kanti. Wannan shine bambanci tsakanin tsarin nazari da ingantaccen hanyar samarwa.
