Corundum Molds for Investment Casting from Refractory Alloys and Metals

Table 1

Basic characteristics of ALUMOX binder.

Characteristic
Viscosity of ALUMOX, 𝜈, cSt	2.24–2.30
Mass fraction of Al2O3, wt%,	10.0–12.0
Gel time of ALUMOX, min.	Not less than 30
Relative viscosity of suspension when applied in 1 and 2 layers, sec.	40–42
Relative viscosity of suspension when applied in 3–7 layers, sec	28–30
Bending strength of noncalcined shell molds, MPa	2.2–3.0
Bending strength of calcined shell molds at 1250–1350^∘C, MPa	14–20