Ilimin Girman Fatar Lu'u-lu'u

Kayan lu'u-lu'u, a matsayin kayan foda na zamani, ba wai kawai an ayyana su ta hanyar sinadaran ba, har ma da nau'ikan halaye na zahiri. Waɗannan sun haɗa da girman barbashi, yanayin barbashi, takamaiman yankin saman, tsarin rami, halayen cajin lantarki, da kuma yawan girma da kuma sauƙin kwarara. Daga cikin waɗannan, rarraba girman barbashi yana ɗaya daga cikin mahimman sigogi a cikin Foda mai lu'u-lu'u samarwa da aikace-aikace.

1. Rarraba Girman Barbashi na Foda Mai Lu'u-lu'u

Ana iya rarraba ƙwayoyin lu'u-lu'u zuwa cikin jeri masu zuwa:

• Ƙwayoyin Nanometer (1–100 nm)
• Ƙwayoyin submicron (0.1–1 μm)
• Ƙwayoyin Micron (1–100 μm)
• Ƙwayoyin cuta masu kauri (100–1000 μm)

Ana amfani da kowane girman girma don aikace-aikace daban-daban na masana'antu, kamar gogewa daidai, niƙa, yankewa, da ƙarfafa haɗin gwiwa.

2. Hanyoyin Gwaji Girman Barbashi Na Yau Da Kullum

Akwai hanyoyi da dama da ake amfani da su sosai wajen auna girman barbashin foda na lu'u-lu'u:

1. Hanyar Yaɗa Laser(yana aiki ga nano, micron, da manyan ƙwayoyin cuta)
2. Watsa Haske Mai Sauƙi (DLS)(galibi don ƙananan ƙwayoyin cuta)
3. Nazarin Hoto Mai Tsayi da Sauyi(kewayon micron, yana kuma bayar da bayanai game da siffar barbashi)
4. Hanyoyin Rage Nauyi da Na'urar Tsabtace Ƙasa(ƙwayoyin micron da nano)
5. Coulter Counter (Hanyar Juriya da Wutar Lantarki)(ƙananan ƙwayoyin micron)
6. Na'urar hangen nesa ta Electron (SEM/TEM)(lura da sikelin nano da micron)
7. Hanyar Ultrasonic(ƙananan ƙwayoyin micron)
8. Hanyar Juyawa Iska(kewayon micron, matsakaicin girman barbashi)
9. Binciken Sikeli(yawanci ga ƙwayoyin da suka fi girma fiye da 38 μm)

Daga cikin waɗannan, hanyoyin da aka fi amfani da su wajen samar da Boreas sune Binciken diffraction na laser, watsa haske mai ƙarfi, kuma nazarin hoton gani/na'urar hangen nesa.

3. Menene D50 (Matsakaicin Girman Barbashi)?

D50yana nufin diamita na barbashi wanda aka kai kashi 50% na rarrabawar girman barbashi. Haka kuma an san shi da diamita na barbashi. matsakaicin girman barbashi.

Misali, idan akwai wani misali D50 = 5 μm, yana nufin:

• Kashi 50% na barbashi sun fi 5 μm girma
• Kashi 50% na barbashi sun fi ƙasa da 5 μm

D50 yana ɗaya daga cikin mahimman alamomi kuma ana amfani da su sosai wajen samarwa da amfani da foda lu'u-lu'u, kuma galibi ana amfani da shi don wakiltar foda lu'u-lu'u. matsakaicin girman ƙwayoyin cutana kayan.

4. Menene D97 (Mai nuna barbashi mai kauri)?

D97yana nufin girman barbashi wanda aka kai kashi 97% na tarin rarrabawa.

Nufin wannan:

• Kashi 97% na ƙwayoyin sun fi ƙanƙanta fiye da D97
• Kashi 3% na barbashi sun fi D97 girma

Ana amfani da D97 akai-akai don kimantawa rarrabawa mai kaurina foda na lu'u-lu'u. A fannin masana'antu, wasu abokan ciniki kuma suna buƙatar D95, D97, ko D98don sarrafa kasancewar ƙwayoyin cuta masu yawa sosai.

5. Mahimman Sigogi a Nazarin Rarraba Girman Barbashi

Cikakken lanƙwasa rarrabawar girman barbashi yawanci ya ƙunshi sigogi masu zuwa:

• Matsakaicin (Matsakaicin girman ƙwayoyin cuta):Matsakaicin girman tsarin gabaɗaya
• Matsakaici (D50):Matsakaicin ƙimar rarrabawar ƙwayoyin cuta
• Yanayi (Girman mafi girma):Girman barbashi tare da mafi girman mita
• D10:Girman barbashi wanda aka kai kashi 10% na tarin rarrabawa
• D50:Girman barbashi wanda aka kai kashi 50% na tarin rarrabawa
• D90:Girman barbashi wanda aka kai kashi 90% na tarin rarrabawa.

Waɗannan sigogi tare suna ba da cikakkiyar fahimtar faɗin rarrabawar ƙwayoyin cuta, daidaito, da daidaito.

6. Tsarin Rarraba Girman Barbashi (D10 / D50 / D90)

A cikin lanƙwasa rarrabawar girman barbashi na yau da kullun:

• D10yana wakiltar ƙarshen rarrabawar
• D50yana wakiltar matsakaicin matsayi
• D90yana wakiltar ƙarshen rarrabawa mai zurfi

Ana amfani da alaƙar da ke tsakanin D10, D50, da D90 sosai don kimantawa. daidaito da ingancin tantancewa na foda lu'u-lu'u.

Binciken girman barbashi muhimmin ma'auni ne na kula da inganci ga samfuran foda lu'u-lu'u. Daidaitaccen aunawa da fassarar alamomi kamar D10, D50, da D90 suna tabbatar da daidaiton aiki a fannin gogewa, niƙawa, da aikace-aikacen injina daidai.