Nadiifinta sare ee alumina dhoobada dhoobada ayaa ah qayb goynta ah oo si gaar ah loogu talagalay codsiyada waxqabadka sare leh, kuwaas oo u baahan adkeysi aad u fiican, sax ah, iyo iska caabin xaaladaha daran.
Isku xirka shafka alumina ee nadiifka sare leh ee sare-u-qaadka ah ayaa si taxadar leh loo qaabeeyey iyadoo fiiro gaar ah loo leeyahay faahfaahinta, hubinta shaqeynta ugu fiican iyo isku halaynta. Qayb kasta waxaa laga soo saaray dhoobada alumina ee nadiifka sare ah, shay caan ku ah engegnaantiisa gaarka ah, firfircoonida kiimikaad, iyo iska caabinta xaalufka heerkulka sare. Guryahani waxay ka dhigayaan isku-xidhka shafka dhoobada ah oo si gaar ah ugu habboon bay'adaha ay qaybaha birta dhaqameedku ku fashilmi karaan daxalka, heerkulka sare, ama cadaadiska farsamada. Haddii loo isticmaalo mishiinada saxda ah, nidaamyada hawada, ama qalabka warshadaha culus, kuwan xirmooyinka dhoobada dhoobada ah waxay ku siin karaan xalal lagu kalsoonaan karo, taas oo kor u qaadaysa waxtarka iyo cimriga nidaamka oo dhan.
Mid ka mid ah astaamaha muhiimka ah ee shirarka shaft alumina ee nadiifka ah ee waara waa iska caabintooda xirashada ee aadka u wanaagsan iyo adkeysiga. Si ka duwan biraha dhaqameed ee soo jireenka ah, kuwaas oo si tartiib tartiib ah u sii xumaanaya sababtoo ah ismaandhaafka iyo arrimaha deegaanka, kuwan dhoobada dhoobada ah waxay ilaalinayaan sharafta qaabdhismeedka iyo saxnaanta cabbirka muddada dheer ee isticmaalka. Daawaynta dusha sare waxay sii yaraynaysaa khilaafka, hagaajinta waxtarka tamarta iyo yaraynta cadaadiska farsamada ee qaybaha ku hareeraysan. Sidaa darteed, golahan shafka dhoobada ah waa doorasho ku habboon codsiyada u baahan saxnaanta sare iyo xasilloonida.
Marka lagu daro astaamaheeda jireed, shafka dhoobada alumina ee nadiifka sare ah ayaa sidoo kale leh iska caabin aad u xoogan oo u leh daxalka kiimikada. Hantidani waxay si gaar ah faa'iido u leedahay meelaha aysiidhka, saldhigyada, ama walxaha kale ee daxalka xooggan inta badan la kulmo. Maaddadan dhoobada ah kama falceliso inta badan walxaha kiimikaad, hubinta in shafka aysan saameyn ku yeelan arrimo dibadeed oo laga yaabo inay wax u dhimaan waxqabadka alaabta kale. Dulqaadashadan kiimikaad waxay kordhisaa cimriga usheeda dhexe waxayna yaraynaysaa baahida loo qabo beddelka ama dayactirka joogtada ah.
Nadiifinta sareeysa ee alumina shaft dhoobada ayaa laga heli karaa qaabab kala duwan si ay u buuxiyaan shuruudaha codsiga kala duwan. Haddii aad u baahan tahay hal shaambad, qaybo dhamaystiran oo ka kooban, ama qaybo si gaar ah loo nashqadeeyey, xariiqda alaabtani waxay bixisaa dabacsanaan iyo laqabsi. Naqshadeynta shirarka shaft waxay fududeeyaan isdhexgalka aan kala go 'lahayn ee nidaamyada jira, yaraynta wakhtiga rakibidda iyo yaraynta wakhtiga. Waxaa intaa dheer, dabeecadda khafiifka ah ee walxaha dhoobada ah waxay gacan ka geysaneysaa hagaajinta waxtarka nidaamka oo dhan, taas oo ka dhigaysa doorasho ku habboon warshadaha raadinaya tayaynta waxqabadka iyo waxtarka isticmaalka kheyraadka.
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
|
XOGTA TECH ZIRCONIA
|
ITEM
|
UNIT
|
Zro2
|
ZTA
|
|
Density
|
G/cm3
|
6.05
|
413
|
|
Bending Resistance
|
Mpa
|
1300
|
1000
|
|
Compressive Strength
|
Mpa
|
3000
|
3300
|
|
Elasticity Modulus
|
Gpa
|
205
|
320
|
|
Shock Strength
|
Mpam/2
|
12
|
10
|
|
Vaporization Coefficient
|
M
|
25
|
20
|
|
Vickers Hardness
|
HV0.5
|
1200
|
1700
|
|
Thermal Expansivity
|
10-6K-1
|
10
|
9
|
|
Conductivity
|
W/MK
|
2
|
20
|
|
Thermal Shock Resistance
|
AT℃
|
280
|
260
|
|
Maximum Service Temperature
|
℃
|
1200
|
1600
|
|
20℃ Volume Resistance
|
Ω
|
≥1010
|
≥1012
|
|
Dielectric Strength
|
KV/mm
|
-
|
-
|
|
Apparent Porosity
|
％
|
0
|
0
|
|
Permittivity
|
Er
|
-
|
-
|
|
Dielectric Loss Angle
|
tanδ
|
-
|
-
|
Kala xiriir Hada
