Abstract: The invention relates to pipeline control valves, in particular to manufacturing of ball gates on the basis of TiC. The cermet structure consists of a homogeneous metal matrix and uniformly arranged TiC grains in it, and has fragments with a matrix, matrix-framework and framework structures. TiC powder is placed in the mold with preliminary placed porous TiC inserts in it and sintered in the heating furnace in the chamber with non-oxidizing environment. The mold with the carbide semi-product is removed from the heating furnace after sintering. The infiltrate is placed and melted in the crucible located in the same chamber and cast in the mold till contacting the carbide semi-product ensuring its complete infiltration with the molten metal. The invention enables combining the structure and properties over the zones and improving the quality of cermet items.

Abstract: The invention relates to pipeline control valves, in particular to manufacturing of ball gates on the basis of TiC. The cermet structure consists of a homogeneous metal matrix and uniformly arranged TiC grains in it, and has fragments with a matrix, matrix-framework and framework structures. TiC powder is placed in the mold with preliminary placed porous TiC inserts in it and sintered in the heating furnace in the chamber with non-oxidizing environment. The mold with the carbide semi-product is removed from the heating furnace after sintering. The infiltrate is placed and melted in the crucible located in the same chamber and cast in the mold till contacting the carbide semi-product ensuring its complete infiltration with the molten metal. The invention enables combining the structure and properties over the zones and improving the quality of cermet items.