Description

My name is Pearline and I am studying Business and Environmental Management at Willitoft / Great Britain.


3. The Advanced Manufacturing Process of Powder Metallurgy
The creation of a tungsten carbide ring is an engineering feat that diverges entirely from the traditional jewelry-making methods of casting or forging soft metals like gold and silver. Because tungsten carbide has an impractically high melting point, far exceeding that of a standard jeweler's torch, it cannot be melted and poured into a mold. Instead, the process relies on a highly specialized technique known as Powder Metallurgy or sintering. The journey begins with ultra-fine tungsten metal and carbon powders, which are meticulously measured and blended, often with a nickel binder, to ensure a uniform composition. This composite powder is then poured into high-pressure steel dies in the basic cylindrical shape of the desired ring and subjected to immense hydraulic pressure, compressing the powder into a highly dense, yet still brittle, "green state" ring blank. The crucial next step is sintering, where the compacted blank is fired in a vacuum furnace at temperatures exceeding 6,000 degrees Fahrenheit. This intense, oxygen-free heat causes the binder metal to liquefy and flow around the solid carbide particles, fusing them together and creating the final, solid, non-porous tungsten carbide structure. This thermal process also results in significant shrinkage, often up to twenty percent. Once the ultra-hard blank is cooled, it must be cut, shaped, and wedding rings polished using only diamond-coated tools and abrasives. Because no standard metal tool can affect tungsten carbide's surface, the shaping is akin to cutting a rough diamond, requiring high-power lasers and precision grinding to achieve the final dimensions and mirror-like finish, ultimately underscoring the high-tech, intricate nature of its construction.
tungsten classic rings
mens tungsten rings custom

If you loved this article and you would love to receive more details concerning wedding rings please visit our own page.