At present, metallurgical grade
tantalum powder is generally used in the production of
tantalum bar and
tantalum foil, which is molded by pressing and then sintered in vacuum furnace. Tantalum production in China began in 1957. In the 1960s, industrial production of mining, smelting and processing gradually began, and the initial scale of production, technical level, product grade and quality were far from those of developed countries. Since 1990, the tantalum industry in China has developed rapidly and has reached the present international level.
With the development of tantalum production technology and the expansion of its application fields, tantalum, as an additive of some brands of superalloy, has played a good alloying role. Tantalum is one of the most important elements in single crystal superalloy, which has great influence on the main properties of superalloy. In the 1970s and 1980s, the United States developed and put into use a variety of superalloys with tantalum. Most of these superalloys are used as turbine blades and nozzle oriented blades in jet engines, which play a very important role in promoting the development of aeroengines.
At present, with the country's attention to aviation alloy, the use of tantalum bar is increasing day by day. At the same time, as the raw material of tantalum and tantalum alloy production, the production and trading volume of tantalum bar also increased sharply. Article in tantalum, however, no corresponding standard production, the sale, order adopt enterprise standards, technical agreement, enterprise standard is not unified, certain effects on the production and trade, thus making tantalum special standard is very necessary, tantalum special standards should be comprehensive consideration of article tantalum industry development present situation in our country, The standard content strives to play the role of guiding and promoting production.
