Ulaha dhoobada alumina ee nadiifka ah ee nadiifka ah waa walxo gaar ah oo loogu talagalay codsiyada waxqabadka sare leh ee u baahan xasilloonida kuleylka aadka u sarreeya, korantada korantada, iyo xoogga farsamada. Alaabtan waxa ay ka samaysan tahay aluminium nadiif ah oo ka badan 99.5%, taas oo ka dhigaysa mid aad ugu habboon in loo isticmaalo deegaannada ay isku halaynta iyo cimri dhererku muhiim u yihiin. Ulaha dhoobada waxaa lagu soo saaray tignoolajiyada horumarsan ee sintering si loo hubiyo isku mid ahaanshaha iyo joogteynta waxqabadka. Haddi ay ahaan lahayd codsiyada warshadaha, sayniska, ama tignoolajiyada, ulahan saafiga ah ee alumina-yada ah waxay bixiyaan iska caabin aad u fiican, iska caabin daxalka, iyo xasilooni heerkul sare ah.
Xariijimaha dhoobada alumina waa nooc kale oo ah alaabtan dhoobada ah ee nadiifka ah, oo inta badan loo isticmaalo wax soo saarka saxda ah iyo mashaariicda injineernimada gaarka ah. Alaabtaan u qaabaysan xariijimaha waxay caan ku yihiin saxnaanta cabbirkooda iyo awooda ay ku ilaalinayaan sharafta qaabdhismeedka xaaladaha adag. Sida qaybaha muhiimka ah ee hababka kala duwan ee farsamada, ulaha dhoobada ah ee nadiifka ah ayaa ah walxaha lagama maarmaanka u ah soo saarista qaybo u baahan xoog iyo kiimiko labadaba. Kala duwanaanshahooda ayaa ka dhigaya alaabta la doorbido ee warshado badan, oo ay ku jiraan qalabka elektiroonigga ah, hawada hawada, iyo wax soo saarka horumarsan.
Mid ka mid ah sifooyinka ugu caansan ee ulaha dhoobada alumina ee nadiifka ah ayaa ah kororka kulaylka wanaagsan iyo ballaarinta kulaylka hooseeya. Tani waxay awood u siinaysaa inay si degan ugu shaqeeyaan heerkul sare iyada oo aan qalloocin ama lumin sharafta qaabdhismeedka. Intaa waxaa dheer, dhaqan la'aantoodu waxay hubisaa isticmaalka badbaadada leh ee codsiyada korantada waxayna yaraynaysaa halista wareegyada gaaban ama cilladaha korantada. Adkeysiga sare iyo xirashada caabbinta alaabtan ayaa ka dhigaysa mid ku habboon codsiyada u baahan xasilloonida muddada dheer, sida shiididda, goynta, iyo qalabaynta.
Sharaxaadda faahfaahsan ee alaabtani waxay muujinaysaa ka kooban, habka wax soo saarka, iyo sifooyinka jireed. Waxay ka samaysan tahay budada aluminium ee ultra-pure, taas oo la isku dhejiyay oo lagu shiday heerkul aad u sarreeya si loo gaaro cufnaanta iyo xoogga loo baahan yahay. Maaddada laga helay geeddi-socodkan ma aha oo kaliya mid waara oo xooggan, laakiin sidoo kale waa mid aad u adkaysta falcelinta kiimikada waxayna sii wadi kartaa waxqabadka muddada dheer ee xaaladaha adag. Alaabooyinka usha dhoobada ah ee nadiifka ah ee nadiifka ah waxay ku yimaadaan cabbirro iyo qaabab kala duwan waxaana loo habeyn karaa iyadoo loo eegayo shuruudaha codsiga gaarka ah. Daaweynta dusha siman iyo cabbirka saxda ah ayaa ka dhigaya kuwo aad ugu fiican codsiyada u baahan saxnaanta sare.
Fahamka noocyada kala duwan ee codsiyada ee ulaha aluminium ee nadiifka ah ayaa muhiim ah marka la tixgelinayo isticmaalkooda. Goobta elektiroonigga ah, ulaha dhoobada ah waxaa loo isticmaalaa sida qaybaha dahaarka ee qalabka korantada sare si loo hubiyo badbaadada iyo waxtarka. Warshadaha hawada sare, iyada oo ay ugu wacan tahay awoodda ay u leeyihiin in ay u adkeystaan heerkulka aadka u daran, waxaa loo isticmaalaa gaashaaman kulaylka iyo qaybaha qaabdhismeedka. Qalabka caafimaadka, maaddadan waxaa lagu qiimeeyaa ku habboonaanta noolaha iyo awoodda ay uga hortagto hababka jeermiska. Xariijimaha dhoobada alumina waxaa inta badan loo isticmaalaa soo saarista dahaarka dhoobada, substrates, iyo qaybaha kale ee injineernimada kuwaas oo u baahan nadiifnimo sare iyo heerarka waxqabadka.
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
|