Maddiibadihii dhoobada alumina iyo qolofleyda ayaa ah qaybo muhiim ah oo ku jira jawi heerkul sare oo kala duwan iyo kiimiko ahaan wasakhaysan. Alaabooyinkani waxay ka samaysan yihiin aluminium saafi ah oo sarreeya waxayna leeyihiin xasillooni kuleyl oo aad u wanaagsan, xoog farsamo, iyo iska caabin daxalka. Haddi ay noqoto shaybaadhada, hababka wax soo saarka, ama codsiyada warshadaha gaarka ah, alaabtan dhoobada ahi waxay bixin karaan waxqabad la isku halayn karo marka ay jiraan xaalado aad u daran. Naqshadaynta makiinada dhoobada ah ee alumina iyo alumina ceramic crucibles waxaa loogu talagalay in lagu buuxiyo shuruudaha adag ee warshadaha casriga ah, hubinta saxnaanta, adkeysiga, iyo helitaanka muddada dheer. Waxqabadku maaha mid ka hooseeya kan dhoobada Zirconia.
Mid ka mid ah astaamaha ugu muhiimsan ee alaabooyinka dhoobada ah ayaa ah awoodda ay u leeyihiin inay ku sii jiraan kuwa aan qalloocin heerkulka sare. Tani waxay ka dhigaysaa inay aad ugu habboon yihiin dhalaalidda biraha, toogashada dhoobada, ama samaynta falcelinta kiimikaad ee u baahan soo-gaadhista kulaylka la kantaroolay. Gaar ahaan, alumina ceramic crucibles waxay caan ku yihiin kuleylkooda aadka u wanaagsan iyo ballaarinta kulaylka hooseeya, taas oo ka caawisa ilaalinta sharafta qaabdhismeedka inta lagu jiro wareegyada kululaynta iyo qaboojinta soo noqnoqda. Intaa waxaa dheer, maddiibadihii dhoobada alumina waxay leeyihiin dusha siman oo aan falcelin lahayn, taas oo ka hortagaysa faddaraynta waxayna hubisaa natiijooyinka saxda ah ee tijaabooyinka kala duwan iyo hababka wax soo saarka.
Alaabooyinka dhoobada ah waxay ku yimaadaan cabbiro iyo qaabab kala duwan si ay u daboolaan baahiyo kala duwan. Makiinada dhoobada alumina waxaa badanaa loo isticmaalaa haynta iyo qaadista walxaha dhalaalay, halka alumina ceramic crucibles loo isticmaali karo weel loogu talagalay falcelinta heerkulka sare. Labada badeecadoodba waxay leeyihiin cabbirro caadi ah oo la heli karo, laakiin haddii ikhtiyaarrada gaarka ah la bixiyo waxay ku xiran tahay soo saaraha. Kala duwanaanshahooda ayaa awood u siinaya in lagu dabaqo dhinacyo badan, oo ay ku jiraan birta, kimisteriga, iyo sayniska agabka.
Markaad dooranayso maddiibado dhoobo ah oo aluminium ah ama weel, qodobbada muhiimka ah ee la tixgelinayo waxaa ka mid ah iska caabbinta heerkulka sare, waafaqsanaanta kiimikada, iyo shuruudaha cabbirka. Alaabooyinkani waxay caadi ahaan leeyihiin heerkulka ugu sarreeya ee hawlgalka ilaa 1600 ° C, taasoo ka dhigaysa inay ku habboon yihiin inta badan codsiyada warshadaha iyo shaybaadhka. Waxa kale oo ay la jaan qaadayaan kiimikooyin kala duwan (ay ku jiraan asiidh, saldhigyo, iyo dareerayaasha), taas oo ka dhigaysa kuwo si heersare ah ugu shaqayn kara deegaan kala duwan. Dabeecadda aan dabada lahayn ee alaabta dhoobada ah waxay ka caawisaa ka hortagga nuugista walxaha, hubinta xasiloonida waxqabadkooda muddada dheer.
Maaraynta saxda ah iyo kaydinta ayaa muhiim u ah ilaalinta tayada iyo cimriga alaabtan dhoobada ah. Waxaa lagu talinayaa in aad ka taxadarto markaad isticmaalayso si aad uga fogaato dildilaaca ama jabka, sababtoo ah tani waxay dhaawici kartaa waxqabadkooda. Marka aan la isticmaalin, waa in lagu kaydiyaa meel qalalan oo qabow si looga hortago nuugista qoyaanka iyo waxyeelada suurtagalka ah. Waxa kale oo lagu talinayaa in si joogto ah loo hubiyo calaamadaha daalashada ama dhaawaca si loo hubiyo in hawlgalkooda ammaan iyo waxtar leh.
Kuwa doonaya beddelka tayada sare leh ee birta dhaqameed ama weelasha dhalada ah, maddiibadihii dhoobada alumina iyo dhalooyinka ayaa ah doorasho aad u fiican. Waxay u adkeysan karaan xaalado aad u daran waxayna leeyihiin nolol dheer, iyaga oo ka dhigaya maalgashi dhaqaale xarun kasta oo u baahan qalab heerkul sare ah oo la isku halayn karo. Maaddaama tikniyoolajiyaddu ay sii socoto, baahida loo qabo qalabyada waara ee waxtarka leh sida ceramics alumina ayaa kordhin doona oo kaliya, sii adkeynaya booskooda meelo kala duwan.
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
