Description:
alumina electric ceramic substrate-Good insulation
-Wear resistance
-Heat resistance
-Used in electric products
STA superquality al2o3 alumina electric ceramicsubstrate
Highquality Alumina Grinding Media (Alumina substrate andLining Brick) are made from selected high grade raw material andfired in high temperature by advanced cool iso-static pressingtechnique and automatic molding process. We are working forcustomers'' demands and offering the products with best performanceprice ratio. With advantages of high density, regular shape, easilyclassifying and assorting, superior milling efficiency andcompetitive price prior to natural pebbles and conventionalgrinding media, Alumina Ball and Lining Brick have been approved tobe excellent for grinding processing of ceramic bodies and glazematerials in tile industries and surface polishing of the ceramicbearing applicant and surly the best choice to replace the pebbles.based on different applying fields, we have developed the relevantgrades and series, which meet the customers'' consideration on theuse and cost control, and have gained the good reputation fromclients domestic and oversea.
ProductFeature:
Finegrinded surface,
Tighttolerance,
Hightemperature
Aluminaceramic substrateSpecification/Models
10x10x1mm,20x20x2mm, 40x40x8mm, 100x60x8mm, 150x150x12.5mm, 200x200x25mm etc.Can be made according to your requirements.
Sometechnical parameters :
| Performance | |||||
| Item | Unit | 95Al2O3 | 96Al2O3 | 99Al2O3 | |
| PhysicalCharacteristics | Bulkdensity | g/cm3 | 3.6 | 3.6 | 3.9 |
| Waterabsorption | % | 0 | 0 | 0 | |
| MechanicalCharacteristics | Flexuralstrength | Mpa | 320 | 340 | 360 |
| HardnessVickers | Gpa | 12.2 | 13.5 | 15.6 | |
| Elasticmodulus | Gpa | 280 | 320 | 370 | |
| Poisson’sratio | - | 0.22 | 0.23 | 0.23 | |
| ThermalCharacteristics | Linearexpansioncoefficient | (200C-5000C)10-6/0C | 7.1 | 7.2 | 8 |
| Thermalconductivity | w/(m.k) | 16 | 24 | 32 | |
| SpecificHeat | *10-3J/(kg*K) | 0.78 | 0.78 | 0.9 | |
| ElectricalCharacteristics | Dielectricconstant (1MHZ) | - | 9 | 9.4 | 9.9 |
| Dielectriclossangle | *10-4 | 15 | 5 | 1 | |
| Dielectricstrength | *106V/m | 12 | 15 | 15 | |
| Processingtechnology | |||||
| Processrange (mm) | |||||
| OutsideDiameter | 1---300 | ||||
| InsideDiameter | 0.5---300 | ||||
| Length | 0.5---1200 | ||||
| Accuracy ofworking (mm) | |||||
| Perpendicularity | 0.01 | ||||
| Concentricity | 0.01 | ||||
| Roundness | 0.005 | ||||
| Straightness | 0.005 | ||||
| Parallelism | 0.01 | ||||
| Planeness | 0.005 | ||||
| Roughness | 0.05 | ||||
| Fitclearance | 0.005 | ||||
Ourgeneral ceramic parts include:
ceramic tube, ceramic rod, ceramic plate, ceramic disc valve,ceramic wafer, ceramic seal, ceramic bearing, ceramic valves,ceramic pump plunger, ceramic beam, ceramic roller, ceramic shaft,ceramic screw, ceramic sleeve, ceramic washer, ceramic lamp holder,ceramic insulator, ceramic nozzle, ceramic lining, ceramic guide,ceramic grinding media, ceramic milling ball or beads, ceramicbushing, ceramic substrates, ceramic piston, ceramic ferrule,ceramic ignitor, ceramic bolt and nut, ceramic crucibles, ceramicfoam filter etc.
