Tin Bath Bottom Block

发布时间:2020-07-01 09:59浏览次数:
Description:
Brand Name: FTB-40A  / FRB-40B
                    Adopted high quality raw material, tin bath bottom blocks are produced with the processing of fine batching, moulding, drying, firing, cutting, grinding, milling, drilling, finished product drying, detecting, etc. The dimension is accurate and the physical and chemical properties especially the performances of resistance to hydrogen diffusion, flaking resistance and alkali attacking resistance are perfect, there was no any nepheline after ten years service in tin bath. Especially new developed tin bath bottom block FTB-40B, it has advantages of low hydrogen diffusion, low thermal expansion ,low thermal conductivity ,low elasticity modulus and high refractoriness under load.This product could be used in the whole bottom of float glass tin bath.
Physical and Chemical Index:
项目Item 指标Index
FTB-40A FTB-40B
物理指标Physical properties
耐火度Refractoriness(℃) ≥1700 ≥1700
体积密度Bulk density(g/cm3 2.25 ≥2.10
显气孔率Apparent porosity(%) ≤18 ≤20
常温耐压强度Cold crushing strength(MPa) ≥50 ≥50
重烧线变化Linear change on reheating 1000℃×2h(%) ±0.1 ±0.1
热震稳定性1000℃水冷(次)Thermal shock resistance (1000℃ water-quenching)(cycle) ≥10 ≥10
导热系数热面1000℃ Thermal conductivity hot surface 1000℃(W/m•k) 1.1 0.9
氢扩散性Hydrogen diffusion(mmH2O) 100 80
抗锡渗透性Tin penetration 1100℃×4hr 无渗透
no penetration
弹性模量Elasticity modulus GPa ≤40 ≤25
荷重软化温度Refractoriness under load T0.6(℃) ≥1400 ≥1450
热膨胀率Thermal expansivity (+ at 1000)(%) ≤0.65 ≤0.60
化学成分Chemical composition (%)
Al2O3 ≥45 ≥45
Fe2O3 ≤1.0 ≤1.0
R2O ≤1.0 ≤1.0

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