Tantalum board, tantalum tape, tantalum foil specifications are different, so the processing method, the selection of raw materials are also different. Generally used in the electronics industry tantalum plate, tantalum strip, tantalum foil, product specifications are small, the amount is less, often using powder metallurgy method to produce blank, and used in other industries, large size tantalum plate, tantalum strip is cast by vacuum smelting method.
Ingots can also be forged ingots/billets to make various tantalum materials. At high temperature, it is easy to react with oxygen and nitrogen, which not only generates loose oxides on the surface, but also makes oxygen penetrate into the matrix, making it difficult to process. Therefore, in addition to hot forging (heating temperature is 350-400 ° C), tantalum can also be exposed to air heating. High temperature forging heating should take certain protective measures, mainly in the electric furnace or vacuum furnace filled with inert gas heating. Metal coating method and coating method can also be used for protection, of which coating method is preferred. For high purity tantalum ingots, it has good plasticity at room temperature and can be cold forged. But for the general purity of tantalum ingots, the use of hot forging or high temperature forging.
Rolling Rolling is the process of plastic deformation of metal by means of the pressure applied by the roll. The roll is a uniform cylinder, the roll is called flat rolling, and the rolled piece rolled by the flat roll is called flat rolling. Flat roll rolling is mainly used to produce strip, foil and other semi-finished products.
