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How are tungsten carbide dies manufactured to achieve such precise geometries and surface finishes?Manufacturing tungsten carbide dies is a multi-step process demanding extreme precision. Powder preparation begins with selecting the appropriate grade: fine-grain (0.3–0.8 µm) with 6–10% cobalt for wire drawing dies requiring high wear resistance and a smooth finish; or medium-grain (1–2 µm) with 10–15% cobalt for cold heading dies that must withstand impact. The powder is mixed with an organic binder and pressed into a near-net shape — for wire drawing dies, this means a roughly conical nib; for flat extrusion dies, a disc shape. Sintering occurs at approximately 1,400–1,500°C (2,550–2,730°F) in a vacuum or hydrogen atmosphere, achieving full density (14.5–15.2 g/cm³). The sintered part undergoes around 18–22% linear shrinkage, which must be calculated in advance.
How are tungsten carbide dies manufactured to achieve such precise geometries and surface finishes?Manufacturing tungsten carbide dies is a multi-step process demanding extreme precision. Powder preparation begins with selecting the appropriate grade: fine-grain (0.3–0.8 µm) with 6–10% cobalt for wire drawing dies requiring high wear resistance and a smooth finish; or medium-grain (1–2 µm) with 10–15% cobalt for cold heading dies that must withstand impact. The powder is mixed with an organic binder and pressed into a near-net shape — for wire drawing dies, this means a roughly conical nib; for flat extrusion dies, a disc shape. Sintering occurs at approximately 1,400–1,500°C (2,550–2,730°F) in a vacuum or hydrogen atmosphere, achieving full density (14.5–15.2 g/cm³). The sintered part undergoes around 18–22% linear shrinkage, which must be calculated in advance.https://www.xymjcarbide.com/products/tungsten-carbide-dies
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