Xallinta Tuubada dhoobada ah ee Alumina ee Warshadaha ee loogu talagalay Codsiyada Waxqabadka Sare
Dhinaca injineernimada agabka horumarsan, isku halaynta xaaladaha daran ayaa muhiim ah. Kala duwanaanshahayaga tuubooyinka dhoobada nadiifka ah ee sarreeya waxay ka dhigan yihiin heerka ugu sarreeya ee tignoolajiyada kuleylka iyo korantada, oo si gaar ah loogu talagalay warshadaha u baahan waxqabad aan leexleexad lahayn. Haddii aad la shaqaynayso kiimikooyin daxalaysa, bay'ad koronto-sare ah, ama ilo kulayl daran, alaabadayada tuubada dhoobada dhoobada alumina ee warshaduhu waxay bixiyaan xal adag oo hubinaya cimri dherer iyo badbaado. Hagahan dhammaystiran waxa uu sahamiyaa tayada sare ee 95% qaabaynta tuubada dhoobada alumina, isaga oo faahfaahinaya sifooyinkooda gaarka ah, codsiyada kala duwan, iyo heerarka wax soo saarka ee adag ee iyaga ka soocaya suuqa adduunka.
Dulmarka Tignoolajiyada Sare ee Tuubooyinka dhoobada
Tuubooyinka dhoobada alumina waxay u adeegaan sidii qaybo muhiim ah oo ka mid ah qaybaha warshadaha kala duwan, iyagoo siinaya dheelitirnaan gaar ah oo xoogga farsamada ah, firfircoonida kiimikada, iyo xasiloonida kulaylka. Si ka duwan sida tuubooyinka biraha dhaqameed ee laga yaabo inay daxaliyaan ama u qabtaan koronto si lama filaan ah, beddelka dhoobada ayaa bixiya dariiqyo aan toos ahayn oo ilaalinaya sharafta qaabdhismeedka xitaa marka ay la kulmaan warbaahinta gardarrada. Diirada gaarka ah ee 95% kala duwanaanshaha tuubada dhoobada alumina waxay bixisaa isku-dhafan wax-ku-ool ah laakiin aad u hufan oo buuxinaya shuruudaha adag ee hababka wax soo saarka casriga ah. Tuubooyinkani ma aha oo kaliya marin-mareeno dadban; waa habab la farsameeyay oo loogu talagalay in ay u adkeystaan shoogga kulaylka, iska caabinta nabarrada, iyo ka hortagga wasakheynta deegaannada xasaasiga ah. Iyaga oo isticmaalaya aluminium oxide oo ah qaybta aasaasiga ah, wax-soo-saarayaashu waxay gaadhaan shay ka adag biraha badankooda oo aad uga adkeysi badan galaaska caadiga ah ama tuubooyinka caaga ah, taasoo ka dhigaysa hanti lagama maarmaan u ah xarumaha teknoolojiyadda sare ee adduunka oo dhan.
Tilmaamaha Muhiimka ah iyo Faa'iidooyinka Farsamada
Sarraynta safka tuubada dhoobada alumina ee warshadeena waxay ka timaadaa dhowr astaamood oo jidheed iyo kiimiko oo kala duwan. Ugu horrayn waa xoogga dielectric ee gaarka ah, kaas oo u oggolaanaya tuubooyinkan inay si wax ku ool ah u shaqeeyaan sida insulators ee qalabka korantada sare iyada oo aan halis loo gelin wareegyada gaaban ama luminta tamarta. Gurigan ayaa si gaar ah muhiim ugu ah soo saarista elektiroonigga iyo kaabayaasha gudbinta korontada. Marka labaad, kuleyliyaha kulaylka ee 95% alumina qaab dhismeedka tuubada dhoobada ayaa bixiya awoodaha kulaylka aad u fiican iyadoo la ilaalinayo caabbinta heerkulka ka sarreeya 1600 darajo Celsius. Awooddan laba-geesoodka ah waxay hubisaa in qaybaha ay qabow yihiin inta lagu jiro hawlgalka iyadoo laga ilaalinayo walxaha ku hareeraysan wareejinta kulaylka xad dhaafka ah.
Iska caabin kiimikaad waa sifo kale oo qeexeysa. Tuubooyinkani waxay muujinayaan difaac u dhow aashitada, alkalis, iyo dareerayaasha organic, hubinta in qulqulka guduhu uu ahaado mid aan wasakh ahayn iyada oo aan loo eegin walaxda la raro. Tani waxay ka dhigaysaa inay ku habboon yihiin goobaha shaybaadhka iyo warshadaynta kiimikaad ee nadiifinta aan gorgortanka ahayn. Intaa waxaa dheer, qallafsanaanta makaanikada alaabta tuubada dhoobada alumina waxay bixisaa iska caabin heer sare ah, kordhinta nolosha adeegga qalabka ay ku dhacaan qulqulo xoqan ama walxo qayb ah. Isku-dhafka hooseeya ee ballaadhinta kulaylka ayaa sidoo kale gacan ka geysta cimrigooda, yaraynta khatarta dillaaca inta lagu jiro isbeddellada heerkulka degdegga ah. Qayb kastaa waxay martaa xakamaynta tayada adag si loo hubiyo saxnaanta cabbirka iyo dhamaystirka dusha sare, dammaanad qaadida isdhexgalka aan kala go 'lahayn ee mishiinada iyo nidaamyada jira.
Qeexitaannada Alaabta oo Faahfaahsan iyo Heerarka Wax-soo-saarka
Nidaamkeena wax soo saarka ee alaabta tuubada dhoobada alumina ee warshaduhu waxay ku lug leedahay cadaadis sare iyo farsamooyin qallafsan oo keena qaab-dhismeed yar oo cufan ah. Isticmaalka budada oksaydhka aluminium ee nadiifka ah ee nadiifka ah waxay hubisaa in alaabta ugu dambeysa ay ka kooban tahay wasakh yar, taas oo haddii kale wax u dhimi karta waxqabadka korantada ama kulaylka. Codsiyada u baahan dulqaadka saxda ah, waxaanu bixinaa adeegyo farsamayneed oo khaas ah si loo gaadho dhexroorka gudaha iyo dibadda saxda ah, dhumucda gidaarada, iyo dhererka. Kala duwanaanshaha tuubada dhoobada alumina ee 95% waxay ku dhufatay dheelitirka ugu fiican ee u dhexeeya waxqabadka iyo la awoodi karo, iyadoo bixisa qiyaastii 95% ka kooban aluminium oksaydh saafi ah kaas oo bixiya sifooyin dahaar sare leh marka la barbar dhigo dhoobada heerka hoose halka ay ka sii dhaqaale badan tahay 99.9% xulashooyinka daahir-sare. Tani waxay ka dhigeysaa doorashada la doorbido codsiyada warshadaha guud ee nadiifinta xad dhaafka ah maaha mudnaanta kaliya laakiin isku halaynta sare waa lagama maarmaan.
Waxqabadku kama hooseeyo kan dhoobada Zirconia & Aluminium Nitride ceramic.

ALUMINA TECH DATA
|
ITEM
|
UNIT
|
99.9 ALUMINA
|
|
Density
|
G/cm3
|
3.94
|
|
Bending Resistance
|
Mpa
|
500
|
|
Compressive Strength
|
Mpa
|
3300
|
|
Elasticity Modulus
|
Gpa
|
400
|
|
Shock Strength
|
Mpam/2
|
5.2
|
|
Vaporization Coefficient
|
M
|
12
|
|
Vickers Hardness
|
HV0.5
|
2000
|
|
Thermal Expansivity
|
10-6K-1
|
8.0
|
|
Conductivity
|
W/MK
|
28
|
|
Thermal Shock Resistance
|
AT℃
|
280
|
|
Maximum Service Temperature
|
℃
|
1750
|
|
20℃ Volume Resistance
|
Ω
|
≥1015
|
|
Dielectric Strength
|
KV/mm
|
30
|
|
Apparent Porosity
|
%
|
0
|
|
Permittivity
|
Er
|
10
|
|
Dielectric Loss Angle
|
tanδ
|
0.001
|
ALUMINA budada TECH XOGTA
|
ITEM
|
LS-110
|
LS-120
|
LS-130
|
LS-110F
|
LS-220
|
LS-210
|
|
LOI(%)
|
0.02
|
0.02
|
0.05
|
0.08
|
0.03
|
0.01
|
|
Na2O(%)
|
0.05
|
0.04
|
0.03
|
0.05
|
0.07
|
0.08
|
|
SiO2(%)
|
0.07
|
0.07
|
0.07
|
0.09
|
0.02
|
0.02
|
|
Fe2O3(%)
|
0.03
|
0.03
|
0.03
|
0.03
|
0.02
|
0.02
|
|
Al2O3(%)
|
99.9
|
99.9
|
99.9
|
99.9
|
99.9
|
99.9
|
|
average grain diameter(um)
|
1.7
|
2.1
|
2.2
|
1.1
|
2.7
|
2.9
|
|
αgrain diameter(um)
|
1-2
|
1-3
|
2-4
|
1-2
|
2-3
|
3-5
|
|
BET Surface Area(m2/g)
|
1.9
|
1.4
|
1.4
|
3.2
|
1.6
|
0.9
|
|
Pressure-induced volume density(g/cm3)*
|
2.22
|
2.27
|
2.31
|
2.29
|
2.22
|
2.32
|
|
Forming density(g/cm3)**
|
2.13
|
2.20
|
2.23
|
2.33
|
2.17
|
2.30
|
|
Sintering volume density(g/cm3)**
|
3.78
|
3.79
|
3.78
|
3.89
|
3.81
|
3.77
|
|
Line collection efficiency(%)
|
18.0
|
17.2
|
16.7
|
15.7
|
17.5
|
15.3
|