Alamun fasaha na ƙaramin foda na lu'u-lu'u masu inganci sun haɗa da rarraba girman barbashi, siffar barbashi, tsarki, halayen zahiri da sauran girma, waɗanda ke shafar tasirin amfani da shi kai tsaye a cikin yanayi daban-daban na masana'antu (kamar gogewa, niƙa, yankewa, da sauransu). Ga manyan alamun fasaha da buƙatun da aka tsara daga cikakkun sakamakon bincike:
Rarraba girman barbashi da sigogin siffantawa
1. Girman barbashi
Girman barbashi na ƙaramin foda na lu'u-lu'u yawanci yana da microns 0.1-50, kuma buƙatun girman barbashi sun bambanta sosai a cikin yanayi daban-daban na aikace-aikace
Gogewa: Zaɓi ƙananan foda daga 0-0.5 micron zuwa 6-12 micron don rage karce da inganta ƙarewar saman 5
Nika: Ƙananan foda daga microns 5-10 zuwa microns 12-22 ya fi dacewa da inganci da ingancin saman.
Nika mai kyau: foda mai micron 20-30 na iya inganta ingancin nika
2. Bayyanar rarrabawar girman barbashi
D10: girman barbashi mai daidai da kashi 10% na tarin rarrabawa, wanda ke nuna rabon barbashi masu laushi. Ya kamata a sarrafa rabon barbashi masu laushi don guje wa raguwar ingancin niƙa.
D50 (diamita matsakaici): yana wakiltar matsakaicin girman barbashi, wanda shine ainihin ma'aunin rarraba girman barbashi kuma yana shafar ingancin sarrafawa da daidaito kai tsaye.
D95: girman barbashi mai daidaito na rarrabawa ta hanyar 95%, da kuma sarrafa abun ciki na barbashi masu kauri (kamar D95 wanda ya wuce misali yana da sauƙin haifar da ƙaiƙayi akan kayan aikin).
Mv (matsakaicin girman barbashi): manyan barbashi suna da tasiri sosai kuma ana amfani da su don kimanta rarraba ƙarshen mai kauri
3. Tsarin yau da kullun
Ma'aunin ƙasashen duniya da aka saba amfani da su sun haɗa da ANSI (misali D50, D100) da ISO (misali ISO6106:2016).
Na biyu, siffar barbashi da halayen saman
1. Sigogi na siffar
Zagaye: Yayin da zagayen ya kusa da 1, haka nan ƙwayoyin za su kasance masu siffar zagaye kuma tasirin gogewa ya fi kyau; ƙwayoyin da ke da ƙaramin zagaye (kusurwoyi da yawa) sun fi dacewa da yin amfani da zare na waya da sauran wurare waɗanda ke buƙatar gefuna masu kaifi.
Barbashi masu kama da faranti: barbashi masu watsawa sama da kashi 90% ana ɗaukarsu a matsayin masu kama da faranti, kuma rabon ya kamata ya zama ƙasa da kashi 10%; barbashi masu kama da faranti masu yawa zai haifar da karkacewar gano girman barbashi da tasirin aikace-aikacen da ba shi da tabbas.
Barbashi masu kama da beads: ya kamata a sarrafa rabon tsawon zuwa faɗin barbashi> 3: 1 sosai, kuma rabon bai kamata ya wuce kashi 3% ba.
2. Hanyar gano siffofi
Na'urar hangen nesa ta gani: ya dace da lura da siffar ƙwayoyin da ke sama da microns 2
Na'urar hangen nesa ta lantarki (SEM): ana amfani da ita don nazarin yanayin ƙwayoyin ultrafine a matakin nanometer.
Tsarkakewa da kuma kula da ƙazanta
1. Abubuwan da ke cikin najasa
Tsarkakken lu'u-lu'u ya kamata ya zama sama da kashi 99%, kuma ƙazanta na ƙarfe (kamar ƙarfe, jan ƙarfe) da abubuwa masu cutarwa (sulfur, chlorine) ya kamata a sarrafa su sosai ƙasa da kashi 1%.
Ya kamata ƙazanta na maganadisu su kasance ƙasa don guje wa tasirin haɗakarwa akan gyaran daidaitacce.
2. Mai sauƙin kamuwa da maganadisu
Lu'u-lu'u mai tsarki ya kamata ya kasance kusa da wanda ba shi da maganadisu, kuma babban saurin kamuwa da maganadisu yana nuna ragowar ƙazanta na ƙarfe, wanda ake buƙatar gano shi ta hanyar hanyar shigar da lantarki.
Manuniyar aikin jiki
1. Taurin tasiri
Ana nuna juriyar murƙushe ƙwayoyin cuta ta hanyar saurin da ba a karye ba (ko lokutan da suka fashe kaɗan) bayan gwajin tasiri, wanda ke shafar juriyar kayan aikin niƙa kai tsaye.
2. Daidaiton zafi
Foda mai laushi yana buƙatar kiyaye kwanciyar hankali a zafin jiki mai yawa (kamar 750-1000℃) don guje wa samuwar graphite ko iskar shaka wanda ke haifar da raguwar ƙarfi; gano thermogravimetric analysis (TGA) da aka saba amfani da shi.
3. Ƙarfin Micro
Ƙarfin ƙarfin foda lu'u-lu'u ya kai 10000 kq/mm2, don haka ya zama dole a tabbatar da ƙarfin barbashi mai yawa don kiyaye ingancin yankewa.
Bukatun daidaitawar aikace-aikace 238
1. Daidaito tsakanin rarraba girman barbashi da tasirin sarrafawa
Barbashi masu kauri (kamar babban D95) suna inganta ingancin niƙa amma suna rage ƙarewar saman: ƙananan barbashi (ƙaramin D10) suna da akasin haka. Daidaita kewayon rarrabawa bisa ga buƙatu.
2. Daidaita siffar
Barbashi masu gefe da yawa sun dace da ƙafafun niƙa na resin; barbashi masu siffar ƙwallo sun dace da gogewa daidai.
Hanyoyin gwaji da ƙa'idodi
1. Gano girman barbashi
Rarrabawar Laser: ana amfani da ita sosai don ƙwayoyin micron/submicron, sauƙin aiki da kuma ingantaccen bayanai;
Hanyar sieve: ya shafi ƙwayoyin da suka wuce microns 40 kawai;
2. Gano siffofi
Mai nazarin hoton barbashi zai iya ƙididdige sigogi kamar su sphericity da rage kuskuren lura da hannu;
taƙaitawa
Babban foda mai inganci na lu'u-lu'u yana buƙatar cikakken iko akan rarraba girman barbashi (D10/D50/D95), siffar barbashi (zagaye, ƙuraje ko allura), tsarki (datti, halayen maganadisu), da halayen jiki (ƙarfi, kwanciyar hankali na zafi). Ya kamata masana'antun su inganta sigogi bisa ga takamaiman yanayin aikace-aikace kuma su tabbatar da inganci mai daidaito ta hanyoyi kamar diffraction na laser da microscopy na lantarki. Lokacin zaɓa, masu amfani ya kamata su yi la'akari da takamaiman buƙatun sarrafawa (kamar inganci da ƙarewa) kuma su daidaita alamun daidai gwargwado. Misali, gogewa daidai yakamata ya ba da fifiko ga sarrafa D95 da zagaye, yayin da niƙa mai ƙarfi zai iya rage buƙatun siffar don haɓaka inganci.
An ɗauko abubuwan da ke sama daga cibiyar sadarwa ta kayan aiki masu ƙarfi.
Lokacin Saƙo: Yuni-11-2025
