Cold Heading Tungsten Carbide Die

What Is a Cold Heading Carbide Die?

A cold heading tungsten carbide die is a precision tooling component used to form metal wire and rod into fasteners, bolts, screws, and shaped parts at room temperature. Renyuan Mould manufactures high-performance carbide cold heading dies for high-volume fastener production.

These dies must withstand extreme impact pressure and abrasive wear, making tungsten carbide the ideal material.

Advantages of Carbide Cold Heading Dies

Tungsten carbide dies offer high compressive strength, excellent wear resistance, and long die life compared to tool steel dies. They maintain precise dimensions over millions of parts, reducing changeover downtime and improving production consistency.

The material also resists galling and surface damage during cold forming, producing better surface finish on fasteners.

Die Types

We produce cold heading dies, nibbling dies, punching dies, trimming dies, and custom forming dies for bolt and screw manufacturing. Die cavities can be round, hexagonal, flanged, or specially profiled according to customer part drawings.

Grade Selection

Coarse-grain carbide grades with higher cobalt content are typically used for cold heading because they offer toughness and impact resistance. Medium-grain grades are used for lighter heading operations. Grade selection depends on heading force, workpiece material, and expected die life.

Manufacturing Process

Carbide cold heading dies are produced by powder pressing, vacuum sintering, and precision grinding. Die cavities are formed through grinding, EDM, and lapping, then polished to achieve the required surface finish for smooth metal flow.

Tolerances and Finish

Die cavity tolerances of plus or minus 0.005 millimeters are achievable. Cavity surfaces are polished to Ra 0.2 or better to reduce friction and prevent metal pickup during heading.

Applications

Our cold heading dies serve the fastener industry for producing bolts, screws, nuts, rivets, and special formed parts. They are used in automotive, construction, electronics, and appliance manufacturing.

Custom Die Manufacturing

Renyuan Mould provides custom cold heading die design based on customer drawings, samples, or part specifications. We assist with cavity geometry, radius design, and grade selection to maximize die life.

Quality and Delivery

Every die is inspected for dimensions, hardness, surface finish, and visual defects. Dies are protected with anti-rust coating and packed securely. Standard delivery is two to four weeks worldwide.

Why Choose Renyuan Mould

With years of experience in carbide cold heading dies, Renyuan Mould supplies reliable tooling to fastener manufacturers globally. We offer competitive pricing, strict quality control, and technical support. Contact us with your die requirements.