... cutting tools, steel-making industrial and tungsten carbide grain refiner alloys, can significantly improve. As the ... purpose, whether the production of coarse grain, such as ultra-fine grain alloy mining tools, or round bars, ... the more Haojiu Hang. Rods and other ultra-fine grain alloy if the additive is too rough, ... of the material. Vanadium carbide as a grain refiner, has been widely used in steel ...