Sleeves are components that protect equipment, effectively reducing wear between punches or bearings and the equipment while also serving as a guiding function. In the field of stamping molds, tungsten carbide sleeves are widely used due to their wear resistance and smooth finish, which minimizes the need for frequent replacement, thereby enhancing equipment and personnel utilization rates.

Hardmetal bushes, also known as tungsten steel bushes, are mainly used in stamping and stretching applications. Hardmetal is extensively used as cutting tool materials, including lathe tools, milling cutters, planning tools, drills, reamers, and more, for cutting cast iron, non-ferrous metals, plastics, synthetic fibers, graphite, glass, stone, and common steel. It can also be used for cutting difficult-to-machine materials such as heat-resistant steel, stainless steel, high manganese steel, and tool steel. The cutting speed of the new hardmetal cutting tools is hundreds of times that of carbon steel.

Hardened alloy bushes, particularly copper and stainless steel components, are prone to stretching due to high usage frequency, leading to overheating and wear on the bushes. This can cause the punch to shift, resulting in dimensional errors and poor product appearance. As oil extraction volumes increase and shallow oil reserves decline, there is a gradual shift towards deeper, more inclined wells to maintain oil consumption. However, the difficulty of oil extraction increases, thus necessitating components with excellent wear resistance, corrosion resistance, or impact resistance.