REFRACTORY MATERIAL FOR SMELTING TITANIUM ALUMINUM ALLOY AND METHOD FOR PREPARATION THEREOF

摘要

Provided is a refractory material for smelting a titanium aluminum alloy, and a method for preparation thereof. Disclosed is: taking 60–75wt% of titanium-containing calcium hexaaluminate particles as aggregate, and taking 25–40wt% of titanium-containing calcium hexaaluminate fine powder as a matrix material; first, adding the mixed matrix material to the aggregate, and mixing uniformly; adding a binder which accounts for 0.5–2wt% of the sum of aggregate and matrix material, grinding, and compression molding under conditions of 100–200 MPa, then drying at 110–200°C, to obtain a refractory material for smelting a titanium and aluminum alloy. The particle size of the titanium-containing calcium hexaaluminate particles is 0.088–10 mm, and the particle size of the titanium-containing calcium hexaaluminate fine powder is less than 0.088 mm; the phase content of (Al0.84Ti0.16)2) 6O19 of the titanium-containing calcium hexaaluminate particles and the titanium-containing calcium hexaaluminate powder is greater than 90wt%. The preparation method has low cost and a simple process, and the product has the characteristics of good high-temperature chemical stability, good thermal shock resistance, strong resistance to titanium aluminum alloy melt, and low pollution to titanium aluminum alloy.