Silicon carbide substrate wear-resistant material
In 2011, foreign ceramic wear-resistant materials, wear-resistant castables and spreads were introduced. After years of product transformation and years of practical application experience, the general heat-resistant and wear-resistant cast steel was gradually replaced, which significantly prolonged the service life and was recognized by the market. Introduction to the types and characteristics of several silicon carbide wear-resistant materials:
75SiC series
| Main components | SiC＞75% Al2O3＞12% |
| Maximum operating temperature | 1500℃ |
| Normal temperature compressive strength(850℃) | 140MPa |
| Normal temperature flexural data(850℃) | 30MPa |
| Abrasion resistance |
DIN52108(European standard)＜0.2mm GB18301(National standard)<4.0cm3 |
| Performance characteristics | heat shock resistance; strength increases with increasing temperature; high temperature does not deform, is conducive to combustion stability, improve efficiency; high wear resistance reduces maintenance costs; helps reduce NOx emissions; life is 2 to 3 times that of steel components |
65SiC series
| Main components | SiC＞67% Al2O3＞15% |
| Maximum operating temperature | 1200℃ |
| Normal temperature compressive strength(450℃) | 140MPa |
| Normal temperature flexural data(450℃) | 18MPa |
| Abrasion resistance(DIN52108) |
DIN52108(European standard)＜0.2mm GB18301(National standard)<4.5cm3 |
| Performance characteristics | high temperature resistance, wear resistance, corrosion resistance, integral casting molding process, no weak parts, small thermal deformation, smooth surface flow resistance |
SiC coating series
| Main components | SiC＞10% Al2O3＞55% |
| Maximum operating temperature | 1000℃ |
| Normal temperature compressive strength(20℃) | 150MPa |
| Normal temperature flexural data(20℃)： | 17MPa |
| Abrasion resistance(DIN52108) |
DIN52108(European standard)＜0.5mm GB18301(National standard)<5cm3 |
| Performance characteristics | It can be used on site, reduce installation cost and has good wear resistance. Suitable for wear and high temperature treatment of large structural interior walls. |
Low silicon carbide series
| Main components： |
SiC＞10% Al2O3＞70% SiO2＞10% Fe2O3<0.2% |
| Maximum operating temperature： | 1200℃ |
| Normal temperature compressive strength(450℃)： | 180MPa |
| Normal temperature flexural data(450℃)： | 20MPa |
| Abrasion resistance： |
DIN52108(European standard)<0.2mm GB18301(National standard)＜4.5cm3 |
| Performance characteristics： | High temperature resistance, wear resistance, corrosion resistance, integral casting molding process, no weak parts, small thermal deformation, smooth surface flow resistance |
Use high quality alumina and silicon carbide as aggregate
After heat treatment at 400 °C, high strength, compressive strength up to 200 MPa, with good mechanical impact resistance
The heat treatment temperature is usually 110-600 ° C
Cost-effective, the unit price is only half of the former two
Pouring construction, good fluidity
Excellent wear resistance, wear resistance after heat treatment at 110 ° C can be less than 4.5cm3
