Wafer Head Screw Cold Former

The Wafer Head Screw, distinguished by its exceptionally wide, thin, and low-profile head with a pronounced undercut, is a specialized fastener designed for applications requiring a large bearing surface and minimal protrusion. This unique design distributes clamp force over a vast area, making it ideal for securing soft materials like plastics, composite boards, and sheet metal without pull-through or surface damage. The pronounced undercut beneath the head allows the screw to sit nearly flush while providing ample space for material during tightening. Producing the blank for this screw, which demands the precise formation of a large-diameter, thin head with a specific undercut, presents a distinct metal-forming challenge. Our JYX15 series Two-Blow Screw Cold Heading Machines are expertly engineered to forge these challenging blanks with exceptional consistency and reliability.

The machine's two-strike, single-die process is critical for creating the Wafer Head's signature geometry. The first blow meticulously gathers a significant volume of material and begins to form the wide, flat head profile and the undercut. The decisive second blow then applies immense, controlled force to finalize the head's precise diameter and thin cross-section, while sharply defining the undercut in a single, seamless operation. This controlled two-stage deformation is crucial for achieving a dense, uniform grain structure throughout the wide head, ensuring it possesses the necessary mechanical strength to resist bending or cracking under load. The dimensional stability required for this is provided by our widened, thickened, and entirety quenched vertical sliding plate, which guarantees vibration-free operation and perfect die alignment-a prerequisite for forming such a wide, precise profile.