Refractories For Reheating Furnace
fused cast skid rail blocks
Bulk Density :3.0 ~ 3.2 g/cm3
Cold Crushing Strength : 250Mpa
Apparent Porosity : 5~8 %
PRODUCT DESCRIPTION
Introduction
Fused cast skid rail block is a high-performance fused cast refractory produced by electric melting and integral casting molding. It is made of raw materials such as high-grade corundum, mullite Fused zirconium and so on. which are melted and founded in high temperature electric furnace. featuring ultra-dense structure and outstanding load-bearing & anti-scuffing capacity. It is a dedicated wearing part for the walking beam skid system of steel heating furnaces.
Features
high wear resistance
Excellent high-temperature strength and creep resistance
Dense fused cast structure with low porosity
Stable thermal shock performance
Application: for Skid Rail refractories of STEEL reheating furnace,
It is mainly used in areas that require high abrasion and temperature resistance, such as gliding rail bricks in steel pusher metallurgical furnaces, the tapping platform (tapping spout) style walking beam furnaces, and also as the interior for destructors.
TECHNIQUE DATA
| Item | Behaviors TY-GM5 | |||
| Special | Typical | |||
| ChemicalComposition % | Al2O3 | 71-74 | 73 | |
| ZrO2 | 4.5-6 | 5.5 | ||
| SiO2 | 17-20 | 19 | ||
| Fe2O3 | ≤0.5 | 0.5 | ||
| Na2O | ≤1.0 | 1.0 | ||
| CaO | ≤0.5 | 0.5 | ||
| Apparent Porosity (%) | 5-8 | <8 | ||
| True density g/cm3 | ≥3.0 | 3.54 | ||
| Cold Crushing Strength Mpa | ≥250 | 350 | ||
| Hot Crushing Strength 1300℃ Mpa | 45 | |||
| Thermal Expansion Rate 1150℃ % | 0.8 | |||
| Thermal conductivity 500~1500 ℃: W/M.K | 4.6 | |||
| Bulk Density (g/cm3) | PT(RN) | ≥3.0 | ||
| WS(VF) | ≥3.2 | |||
| Crystallographic analysis % | Corundum | 38 | ||
| Mullite | 41 | |||
| Glass Phase: | 17 | |||
| Baddeleyite | 5 | |||
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