Definition and performance characteristics of wear-resistant ceramics
Definition of wear-resistant ceramics:
Wear-resisting ceramics is a special corundum ceramics made of AL2O3 as the main raw material, rare metal oxide as the flux, and roasted at a high temperature of 1,700 degrees, and then combined with special rubber and high strength organic / inorganic adhesive respectively.
Characteristics of wear-resistant ceramics:
A hardness is large
B. Excellent wear resistance
C Lightweight (only half of steel, can greatly reduce equipment load)
D firm bond and good heat resistance (wear-resistant ceramic sheet is pasted on the inner wall of the equipment)
E is widely applicable
Thermal power, iron and steel, smelting, machinery, coal, mining, chemical, cement, port and other enterprises coal transport, feeding system, powder system, ash removal, dust removal system and other wear mechanical equipment, can choose different types of products according to different needs.
Main technical indicators of wear-resistant ceramics
Performance meets the Q / OKVL001-2003 technical standard
Main technical indicators of wear-resistant ceramics:
project indicators
95% alumina content
Density of 3.5 g / cm3
Roche hardness of 80 HRA
Compressive strength of 850 Mpa
K Ι C 4.8 MPam1 / 2
Bending strength: 290MPa
Thermal conductivity, 20W/m.K
Coefficient of thermal expansion: 7.2×10-6m/m.K
Main performance indexes of rubber for adhesive and impact resistant ceramic lining board:
Project name indicator
Break strength (Mpa) 12
Pull the extension (%) 250
Shaw hardness (degree) 55-65
Pull off permanent deformation (%) 24
The adhesion force of rubber and ceramic (Mpa) (shear stress) 3.0
Temperature resistance of 100℃
Rubber aging life is 15 years
Main performance indexes of rubber for heat-resistant ceramic lining board:
Project name indicator
Break strength (Mpa) 7.5
Pull the extension (%) 300
Shaw Hardness (degree) 48-58
Break permanent deformation (%) 16
The adhesion force of rubber and ceramic (Mpa) (shear stress) 3.0
Temperature resistance of 250℃
Rubber aging life is 15 years
Main performance indexes of rubber for cold resistant ceramic liner:
Project name indicator
Break strength (Mpa) 12
Pull the extension (%) 350
Shaw Hardness (degree) 48-58
Pull off permanent deformation (%) 24
The adhesion force of rubber and ceramic (Mpa) (shear stress) 3.0
Temperature resistance to-50℃
Rubber aging life is 15 years
Main performance indexes of impact-resistant wear-resistant ceramic lining plate:
Project test conditions, failure of impact height times
Impact resistance strength of 10 kg heavy steel ball, free fall impact, point hit four porcelain pieces.
