The main mold design features a pre-formed head, with a rounded pier and a cross-shaped exhaust groove on the right end face of the front core. A corresponding groove is also formed around the circumference, allowing accumulated air to flow out smoothly through these channels. This design has fundamentally eliminated quality issues by ensuring efficient air discharge. It plays a crucial role in improving the flow of material and enhancing the surface finish of the product's end face. A vent hole is added at the center of the convex mold cavity, preventing air pockets from forming between the bottom of the mold and the workpiece's red ridge during forging. This is essential for eliminating surface scars at the head end. The work position die incorporates a front guide mold that serves both as a reduced-diameter leading section and a pre-forming mold for the head. These process improvements and tooling have been successfully implemented in mass production, yielding highly satisfactory results. After the head is rounded into a spherical shape in the working position, it is directly forged and formed, resulting in a smooth, scar-free end face with no pits or other defects. The surface roughness is consistent, and the forged products exhibit straight grain blanks, well-defined thread blanks, stable dimensions, and minimal taper in the billet. The contour of the cone at the intersection of the two rods is clearly defined, meeting high standards in dimensional accuracy, surface finish, and overall appearance. The improvements in the manufacturing process have led to significant cost reductions and enhanced product quality, bringing notable economic benefits to our plant.

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