The invention relates to a new material ring and a manufacturing method, which is mainly composed of tantalum and nickel, and the weight percentage of each component is 40-90% tantalum and 9-59% nickel. The above components are mixed evenly with 1% adhesive, and then the ring blank is made by sintering at 1400℃ after shaping and degreasing in the mold. After sintering, the ring blank is processed by grinding, CMC line cutting, electric spark and other technologies, and finally the finished ring is formed. Thus, the invention has the characteristics of high strength of material matrix, large and stable friction coefficient, high hardness, strong wear resistance of friction surface, long service life, beautiful appearance, etc.
Traditionally, rings are made from gold, silver, platinum and other softer materials because these metals are so malleable that they can be easily poured, forged or molded. But at the same time these materials are also vulnerable to wear, scratches and other damage, making their service life and appearance value greatly reduced. Tantalum is a metal that, once formed, is very hard. Because of this, they are difficult to shape and require special machining procedures and grinding tools to change their configuration and appearance. We found that tantalum can be used in jewelry in the sintering process of powder metallurgy. In addition, if used in ring manufacturing, the material can also protect the precious metals and gems embedded in the ring.
A new raw material, tantalum Tac, should be used in the traditional jewelry production process to create a more beautiful, wear-resistant, long-life ring, so as to make up a gap in today's jewelry industry. This kind of ring is mainly composed of tantalum Tac, nickel M and cement mixture. Its characteristic lies in the above composition refers to tantalum Tac. The weight percentage of each composition mixture is as follows: tantalum Tac contains 40 -- X, nickel contains 9_59% and cement mixture contains 1%.
The raw material of tantalum is added into ball mill, and the Tac of 40_90% grinding and 9.59% nickel powder are mixed in proportion. In order to evenly mix the powder and increase the adhesion, so as to facilitate the molding, 1% adhesive is added to the mixture and then mixed evenly, and then the mixture is poured into the mold for shaping, then defatted, and finally sintered under pressure protection. In order to improve the sintering effect, the bonding between tantalum and nickel is increased. The sintering setting temperature was controlled at 1400°C. The real example, due to add 40 - bases % of tantalum powder mixed with corresponding different percentage of nickel powder, makes the final sintering ring in hardness, bending curvature, wear-resisting degree physical differences in nature, such as hard brittle overall performance, has the stable friction coefficient, the higher the proportion of tantalum will make product more hard brittle.
