TECHNIQUE INDEX FOR CERAMIC ROLLER | ||||||||||||
Characteristics | Item | VA95 | VA96 | VA97 | VA98/VA98T | VA99/VA99T | ||||||
Physical Properties | Bulk Density (g/cm3) | 2.3-2.5 | 2.5-2.7 | 2.7-2.8 | 2.7-2.9 | 2.8-3.0 | ||||||
Normal Temp.Bending Strength(Mpa) | 45-55 | 50-60 | 50-55 | 60-70 | 70-80 | |||||||
Water Absorption(%) | 8.0-10.0 | 6.0-9.0 | 5.0-8.0 | 4.0-7.0 | 3.0-6.0 | |||||||
Thermal Shock Resistance | Good | Good | Good | Very Good | Excellent | |||||||
Thermal Expansion Conductivity (×10-6 X K-1 0-1000℃) | 5.6 | 6.0 | 6.0 | 6.2 | 6.7 | |||||||
Max. Working temperature(℃) | 1200 | 1300 | 1350 | 1350 | 1400 | |||||||
Intenerate Temp.Under Loading(℃)(0.2Mpa) | 1520 | 1560 | 1580 | 1590 | 1610 | |||||||
Refractoriness℃ | 1700 | 1750 | 1800 | 1830 | 1850 | |||||||
Composition | AL2O3+ZrO2(%) | 74-78 | 75-80 | 76-81 | 77-83 | 78-85 | ||||||
To directly replace roller, Dont need lower the temperature | ||||||||||||
Notice: | ||||||||||||
1.The above data are verfied from testing samples in the lab.,for reference only in practical use. | ||||||||||||
2.The max. working temp. of the roller is depend on specification and size,distance of bearing point,cental distance,load and loading breadth in the kiln. | ||||||||||||
3.The max.working temp. is commendatory in the lab..The practical working temp. is lower 40-60℃ that the max.working temp.. | ||||||||||||
4. VA95/VA96 is for pre-heating zone, cooling zone and wall tile kiln. VA98T/VA99T is for fast cooling zone and Transition zone. VA97/VA98 is for firing zone replace after lowering kiln temperature. VA99 is for firing zone replace without lowering kiln temperature. |