Codsiga heerka sare leh ee alumina giraanta dhoobada Siddooyinkooda dhoobada alumina waa badeecad gaar ah oo loogu talagalay jawiga waxqabadka sare leh, kuwaas oo u baahan adkaysi, caabbinta kulaylka, iyo xasiloonida kiimikada. Siddooyinkani waxay ka samaysan yihiin walxo dhoobo ah oo horumarsan waxayna leeyihiin sifooyin farsamo oo heer sare ah marka loo eego qaybaha birta dhaqameed. Qaybaha baabuurta dhoobada ee alumina iyo boolal dhoobada alumina ayaa ah meelaha ugu muhiimsan ee arjiga halka siddooyinkani ay door muhiim ah ka ciyaaraan kor u qaadista waxqabadka iyo fidinta nolosha adeegga. Haddii loo isticmaalo nidaamyada baabuurta, mashiinada warshadaha, ama qalabka saxda ah, qaybahan dhoobada ah waxay bixin karaan waxqabad la isku halayn karo marka ay jiraan xaalado aad u daran. Astaamaha muhiimka ah ee giraanta dhoobada alumina waxaa ka mid ah adkeysi aad u sarreeya, caabbinta xirashada iyo daxalka, iyo sharafta qaab dhismeedka heerkul sare. Si ka duwan qaybaha birta ee si tartiib tartiib ah u xumaada oksaydhka ama balaadhinta kulaylka awgeed, siddooyinka dhoobada ahi waxay ahaanayaan kuwo deggan oo shaqeynaya muddo dheer. Dhaqan la'aantooda ayaa sidoo kale ka dhigaysa inay ku habboon yihiin codsiyada korantada iyo elektiroonigga ah ee u baahan dahaarka. Intaa waxaa dheer, miisaankooda hooseeya iyo saamiga xoogga-iyo-miisaanka sare ayaa ka dhigaya inay aad ugu habboon yihiin codsiyada hawada iyo warshadaha baabuurta. Marka laga eego sharraxaad faahfaahsan, giraangiraha dhoobada alumina waxaa laga sameeyaa budada aluminium ee nadiifka ah oo nadiif ah waxaana lagu dhejiyaa heerkul aad u sarreeya si ay u sameeyaan qaab dhismeed cufan oo isku mid ah. Habkani wuxuu hubinayaa in alaabta ugu dambeysa ay leedahay porosity aad u hooseeya iyo xoogga ugu sarreeya. Dusha sare ee siddooyinkani waa mid aad u siman, taas oo u oggolaanaysa in si siman loo shaqeeyo iyo hoos u dhac ku yimaada marka loo isticmaalo qaybaha dhaqdhaqaaqa. Waxay ku yimaadaan cabbirro iyo qaabab kala duwan si ay u buuxiyaan shuruudaha naqshadeynta ee kala duwan, taas oo ka dhigaysa mid aad u badan oo la taaban karo codsiyo badan. Marka la eego xaaladaha isticmaalka, giraangiraha dhoobada alumina ayaa inta badan laga helaa qaybaha matoorka sida giraangiraha piston-ka iyo meelaha wax lagu dhejiyo, iyaga oo gacan ka geysanaya yareynta isku dhaca iyo hagaajinta waxtarka. Qaybaha baabuurta dhoobada ah ee alumina waxaa sida caadiga ah loo isticmaalaa hababka qiiqa, dabaylaha, iyo meelaha kale ee kulaylka sareeyo, halkaas oo laga yaabo in alaabta dhaqameedku ku guuldareystaan. Waxaa intaa dheer, ereyga "alumina ceramic screws" ayaa mararka qaarkood loo adeegsadaa goobaha qalabka saxda ah iyo qalabka caafimaadka sababtoo ah faa'iidooyinka ku habboonaanta walxahan iyo awoodaha jeermiska. Siddooyinkan waxaa sidoo kale loo isticmaalaa qalabka shaybaadhka sida centrifuges iyo bambooyinka, maadaama ay muhiim u yihiin dulqaadka kiimikada iyo adkeysiga. Qiimaynta isticmaaluhu waxay si joogto ah u muujisaa faa'iidooyinka isticmaalka giraanta dhoobada alumina ee codsiyada kala duwan. Isticmaalayaal badan ayaa soo sheegaya in isticmaalka siddooyinkan ay hagaajin karaan waxqabadka, kordhinayaan nolosha adeegga, oo ay yareeyaan kharashka dayactirka marka la barbardhigo alaabta dhaqameed. Qaarkood waxay xusaan in siddooyinkani ay si gaar ah ugu fiican yihiin jawiga heerkulka sare iyo kiimikooyinka, iyagoo ilaalinaya qaabka iyo shaqada iyada oo aan hoos u dhicin. Kuwo kale waxay qadariyaan dabeecadda khafiifka ah ee alaabta, taas oo gacan ka geysaneysa hagaajinta waxtarka tamarta ee hababka farsamada. Iyada oo isku-dhafka gaarka ah ee xoogga, caabbinta kulaylka, iyo adkeysiga, waxay noqotaa doorashada la doorbido codsiyada u baahan waxqabad sare iyo isku hallayn. Haddii loo isticmaalo qaybaha baabuurta dhoobada alumina, boolal dhoobada alumina, ama codsiyada kale ee gaarka ah, siddooyinkani waxay sii wadaan inay caddeeyaan qiimaha ay ku leeyihiin warshado badan. Kala duwanaanshaha siddooyinkan oo ay weheliso faa'iidooyinka tignoolajiyada dhoobada ayaa ka dhigaysa hanti qiimo leh oo loogu talagalay injineerada, farsamayaqaannada, iyo xirfadlayaasha raadinaya xalal mustaqbalka fog ah.
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
|
Kala xiriir Hada
