Tungsten steel alloy guide wheel

The utility model relates to a guide wheel made of tungsten steel alloy, in particular to the main component of numerically controlled wire cutting machine. Molybdenum wire moves rapidly in the V-shape slot of the wheel. This high precise manufacture method by electrical discharging can be applied to various products made of metal and nonmetal; therefore, the utility model belongs to machinery and electronics field. The utility model is characterized in that: the ring made of tungsten steel is glued to the steel bar with certain taper strictly and forms a whole part. The utility model has the advantages of simple, compact and reasonable structure, omitting machining procedures and being easy to be machined; in addition, its fine abrasion resistance guarantees the high degree of accuracy and roughness for a long period, the low rate of crack and malfunction. Moreover, the utility model can also lower the rate of wire breakage and prolong the life of molybdenum wire about 5- 10 times, therefore, it can reduce the cost while increase the production efficiency.