High Precision Tungsten Carbide Tube Drawing Dies for Metal Pipe Production

l Cold Heading Die Inserts/Pellets: The core components shrink-fitted into steel jackets, used for the head forming of various bolts, screws, and rivets.

l Nut Forming Dies: Specialized dies designed for multi-station machines to produce hexagonal, square, and custom-shaped nuts.

l Cold Extrusion Dies: Used for extruding metal into cylindrical, cup-shaped, or stepped shaft components (e.g., spark plug shells, piston pins).

l Cut-off Dies: Located at the front end of the cold heading machine, used for high-speed cutting of wire into required lengths.

l Carbide Punches: Paired with the main dies, these directly strike the metal blank to deform it, withstanding enormous instantaneous impact forces.

l Reduction Dies: Used to reduce the diameter of the bolt shank or the end of the metal rod.

 

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Product info

Common Grades and Technical Specifications

Since these products require extreme impact toughness, grades with medium-to-high Cobalt content are typically used:

Product Description

l Material & Process: We utilize ultra-fine or medium-coarse grain, high-purity Tungsten-Cobalt powder. All products undergo HIP (Hot Isostatic Pressing/Overpressure Sintering) to eliminate microporosity, significantly enhancing the alloy’s fatigue strength and crack propagation resistance.

l Pressure Performance: Our cold heading dies can withstand cyclic alternating stresses of up to several thousand Megapascals (MPa). They maintain exceptional dimensional stability even under high-frequency impact.

l Precision Engineering: The outer diameter (OD) undergoes precision centerless grinding, while the internal bore (ID) is ground and polished. This ensures a scientific and reasonable interference fit with the steel sleeve, preventing the carbide from cracking during operation.

l Surface Finish: The forming work zone is polished to a mirror finish. This effectively minimizes frictional resistance, reduces scratches on the workpiece surface, and lowers the scrap rate.

Main Applications

Fastener Industry: Production of standard bolts (DIN/ISO/GOST), nuts, self-tapping screws, blind rivets, and aerospace fasteners.

Automotive Components: Manufacturing of engine piston pins, spark plug shells, universal joint brackets, shock absorber accessories, etc.

Hardware Tools: Cold extrusion forming of various hand tools, sockets, and wrench blanks.

Defense & Aerospace: Production of high-strength structural connectors and small-caliber shell cases.

Cemented Carbide Die & Non-Standard Custom-made Carbide Die Tags

Afc Carbide Rods, Black Tungsten Rods, Boron Carbide Control Rods,

Product Dispaly

Specifications

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