Tuubooyinka dhoobada alumina waa qaybaha ugu muhiimsan ee codsiyada waxqabadka sare leh, gaar ahaan shaybaarada iyo goobaha warshadaha. Tuubooyinka dhoobada ah ee sida saxda ah loo soo saaray waxaa loogu talagalay inay bixiyaan adkeysi gaar ah, degenaansho kulayl, iyo iska caabin kiimikaad, taasoo ka dhigaysa doorasho ku habboon nidaamyada sayniska iyo tignoolajiyada horumarsan. Haddi loo isticmaalo sida gacmo-gacmeedka tiirka, qaybaha qalabka shaybaadhka, ama qaybo ka mid ah qalabka saxda ah, tuubooyinka dhoobada alumina waxay ilaalin karaan waxqabadka xasilloon marka loo eego shuruudaha baahida.
Gacmo-gacmeedyada dhoobada waxay leeyihiin sifooyin dahaar aad u wanaagsan, heerar fidinta kulaylka oo aad u hooseeya, iyo daxalka heersare ah iyo caabbinta xidhashada. Cabbiradooda saxda ah waxay xaqiijinayaan is-dhexgalka aan kala go 'lahayn ee hababka falanqaynta iyo habaynta kala duwan, si kor loogu qaado waxtarka iyo isku hallaynta guud. Waxaa laga sameeyay aluminium saafi ah oo sarreeya, tuubooyinka dhoobada ah waxay ilaalin karaan firfircoonaanta inta lagu jiro hawlgalka mana faddarayn doonaan walxaha xasaasiga ah. Tuubooyinkan waxaa caadi ahaan loo adeegsadaa nidaamyada chromatography, aaladaha sifaynta, iyo qalabka kale ee u baahan saxnaanta iyo joogteynta aadka u sarreeya. Dusha sare ee siman iyo dhumucda darbiga lebbiska ah waxay caawinayaan in la gaaro sifooyinka dareeraha ugu fiican waxayna yareeyaan khatarta ururinta walxaha, taas oo muhiim u ah ilaalinta saxnaanta natiijooyinka tijaabada.
Astaamaha ugu muhiimsan ee tuubooyinka dhoobada alumina waxaa ka mid ah xoog farsamo oo sarreeya, iska caabin aad u fiican, iyo awoodda u adkeysiga heerkulka xad dhaafka ah. Waxay ku yimaadaan cabbirro iyo qaabab kala duwan si ay u daboolaan baahiyaha kala duwan ee codsiga. Intaa waxaa dheer, tuubooyinkani waa kuwo aan shaqaynayn waxayna ku habboon yihiin go'doominta korantada iyo hababka maaraynta kulaylka. Dabeecadooda khafiifka ah waxay sidoo kale sahlaysa in si fudud loo maareeyo loona rakibo iyada oo aan wax saameyn ah ku yeelan sharafta qaabdhismeedka.
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
