How tungsten carbide rings are made?

  • If you are interested in purchasing a tungsten wedding band, you might find it helpful to learn more about the manufacturing process behind these stunning rings. Machines and processes that are on the cutting edge are required for the revolutionary processing of the hardest metal that has ever been used to craft wedding rings. Not only can a person better appreciate the beauty of the magnificent masterpiece if they have a better understanding of the work that went into creating it, but they can also make a better choice when it comes to selecting the best ring that they will be wearing for the rest of their lives.

    1. Forming the blank out of the powder
    The ring that is going to be made first has pure tungsten metal and carbon ground into a fine powder, and then the powder is put inside a mold that is already shaped like the ring that is going to be made. This patented process, which is typically referred to as sintering, begins with the mixture being compressed within the mold, and then the mold itself is heated to approximately 1,400 degrees Celsius within a vacuum furnace. This causes the tungsten to bind with the carbon and form the tungsten carbide structure.

    2. Bringing the ring blank up to a shiny finish
    Following its creation, the ring blank is a piece of alloy that is rough and black in appearance. This piece of alloy will go through approximately thirty distinct steps of polishing in order to achieve the glossy shine that is seen in jewelry stores. The majority of these polishings are completed using a standard polishing machine, the kind that is typically reserved for the polishing of gold and silver jewelry. However, because of the incredible hardness of tungsten carbide, traditional polishing wax is not used; rather, diamond polishing paste is utilized in its place. The compound known as diamond polishing paste is the same substance that is used to polish diamonds. The micron (or grit) of the paste that is used begins at 80 microns, and in order to achieve a finer polish, each of the polishing steps is made progressively finer. In the end, a paste with a grain size of 0.5 micron is used to achieve the mirror-like high polish finish that is desired for the majority of the tungsten bands.

    3. Give the ring a satin or matte finish for the finishing touch
    In the event that any portion of the tungsten carbide strip is given a satin, brushed, or matte finish, the ring will be put through an additional finishing process that makes use of diamond-coated wheels or discs. Scuffing the surface with diamond-coated tools is the only way to achieve the brush effect because the Mohs scale indicates that the material has a hardness of 9.5. During the brush finishing process of a rounded surface, a regular polishing machine is outfitted with a wheel that is diamond coated. When finishing a ring with a flat surface, an alternative method that uses diamond-coated discs and a lap machine is utilized.

    4a. Incorporating diamonds and other precious stones into jewelry
    In order to prepare a carbide strip for the setting of gemstones, a high-powered laser machine is used to cut holes in the material. This calls for a laser with a very high power output and a high degree of accuracy. Because tungsten carbide cannot be bent, the opening that is carved out of it must have dimensions that are identical to those of the diamond setting (also called the housing). If you don't do that, it will either not fit at all or it will be very easy to remove.

    Following the completion of the hole's cutting, the diamond is set into the ring, and then a stainless steel setting is added on top to keep the stone in its position.

    NOTE: Some jewelers may try to convince you that tungsten carbide is indestructible; however, this is not the case. Tungsten carbide can be broken. Fractures are possible in tungsten rings, particularly after a ring has been cut to create a setting for a diamond in a tungsten ring. Because of the cutting, the ring is now significantly thinner, which results in the openings becoming points of weakness. These are the areas that are susceptible to cracking when subjected to impact. Please refer to the illustration for a representation of the cross section of a carbide strip with a diamond setting. Therefore, if you are going to participate in activities that involve impacts, such as playing baseball, it is best to remove the ring so that you do not subject it to any potential damage.

    4b. Setting inlay on blanks
    Some blanks are manufactured with grooves specifically for the purpose of setting inlays. Silver, gold, platinum, wood, stones, carbon fiber, and ceramic are some of the materials that can be used for inlays.

    NOTE: Tungsten rings are extremely durable and almost impossible to scratch, but the inlays that are on them are not scratch resistant. Because precious metals such as silver, gold, and platinum are so delicate, rings with inlays made of these metals will be able to withstand the same amount of scratching as the rings themselves would if worn alone. In spite of the fact that the tungsten portion does offer some support and protection on the sides, a gold inlay will still scratch just as easily as a gold ring would. Taking off your ring before doing any work that requires you to use your hands will protect the inlay from being damaged by rough surfaces, such as steel handles or hand tools.

    4c. Laser engraving designs
    Plain tungsten rings can sometimes be customized with engravings, patterns, or designs to create unique jewelry pieces. In order to engrave the designs, a machine that uses a laser with a lower power setting is utilized. The engraving that is produced in this manner is sharp and enduring.