Tungsten carbide rod with a central cooling hole is an electrode material used for electrical discharge machining, which has a central hole for injecting coolant to achieve cooling, lubrication, and chip removal during the machining process. The length of the tungsten carbide rod body is ≥ 100 millimeters, the outer diameter is ≤ 1.5 millimeters, and the diameter of the central hole is ≤ 0.6 millimeters.
Tungsten carbide is a compound composed of tungsten and carbon, characterized by high hardness, high wear resistance, and high melting point. Pure tungsten carbide is fragile, but adding a small amount of metals such as titanium and cobalt can reduce its brittleness, making it more suitable for use as a hard alloy. Tungsten carbide is insoluble in water, hydrochloric acid, and sulfuric acid, but easily soluble in mixed acids of nitric acid and hydrofluoric acid.
Tungsten carbide rods with central cooling holes are mainly used as electrode materials in electrical discharge machining. The central hole can be filled with coolant to assist in cooling, lubrication, and chip removal during the machining process, thereby improving machining efficiency and workpiece quality. In addition, this tungsten carbide rod can also be used for the manufacturing of precision tools such as carving knives, with high wear resistance and long lifespan.
