Medical titanium rods, performance advantages and main applications of medical titanium materials

Titanium and titanium alloys are first widely used in aviation, aerospace, and other industries due to their low density (4.51g/cm3), high strength (some up to 1000MPa), high specific strength, and excellent high and low-temperature performance.的structural materials. In addition, titanium and titanium alloys have excellent corrosion resistance and other comprehensive properties in many chemical media and are widely accepted by civilian industries such as petroleum, chemical, medicine, sports, etc., gradually replacing various metal materials, in a short time Leaped to the third place in the use of metal materials.

Titanium was discovered in 1789. In 1908, Norway and the United States began to produce titanium dioxide by the sulfuric acid method. In 1910, the sodium method was used to prepare sponge titanium for the first time in a laboratory. In 1948, the United States DuPont (DUPONT) used the magnesium method to produce tons. The production of titanium sponges marked the beginning of the industrial production of titanium sponges.

It can be seen that the production process of titanium involves the highly toxic chemical medium chlorine gas (a chemical weapon in World War II) and the precious metal magnesium, and the reaction process requires a lot of energy, which is the reason why titanium is expensive. The titanium material smelted in this process cannot be used for production because it is still porous and loose, shaped like a sponge, called sponge titanium. Sponge titanium will be placed in a vacuum consumable electric arc furnace to smelt titanium ingots for use in titanium. Production of plates, rods, tubes, and other forms of titanium.

my country is rich in titanium resources, and the minerals are relatively concentrated. When converted into TiO2, the total reserves amount to more than 9 billion tons, ranking first in the world. Titanium ore is mainly distributed in provinces such as Sichuan, Yunnan, Guangdong, Guangxi, and Hainan, among which the reserves of the Panzhihua area account for 35% of the world's total reserves. However, compared with the world's major titanium deposits, my country's natural rutile (TiO2) resources are few, and there are few placers that can be easily exploited. Titanium ore is mostly titanium-vanadium-iron symbiotic rock ore, and the initial cost of beneficiation and smelting is high.

China's titanium industry started in the 1950s. In 1954, the Beijing Nonferrous Metals Research Institute began to conduct research on the preparation of sponge titanium. In 1956, the country included titanium as a strategic metal in its 12-year development plan, and it was implemented in the Fushun Aluminum Plant in 1958. It established the first titanium sponge production workshop in China and established the first titanium processing material production trial workshop in the Shenyang non-ferrous metal processing plant.

Around 1980, the production of titanium sponges in my country reached 2,800 tons. However, due to the lack of understanding of titanium metal by most people at that time, the high price of titanium materials also restricted the application of titanium. The output of titanium processed materials was only about 200 tons. In trouble.

In 2002, my country imported 2,147 tons of titanium sponge, exported 11 tons, and imported 2136 tons; from January to November 2003, my country imported 2609.9 tons of titanium sponge, exported 72.7 tons, and imported 2534.2 tons.

In 2002, my country produced 3328 tons of titanium sponges, and the actual sales were 3,079 tons; in 2003, my country produced 4,112 tons of titanium sponges and sold 4,128 tons. However, due to the large-scale development of the international chemical industry and aerospace industry, the international titanium materials have been in short supply, which has led to a situation in which my country's titanium materials have risen wildly since 2002.

The production capacity of titanium processing materials is determined by the production capacity of titanium ingots, that is, the country has the overall tonnage of vacuum consumable electric arc furnaces. my country basically has a production capacity of 20,000t/a of titanium ingots. With 70% converted into titanium, it basically has a production capacity of 14,000t/a.

According to preliminary statistics, my country actually produced about 6,000 tons of titanium in 2003, accounting for about 10% of the world's total output. It can be seen that China's titanium processing industry is not very developed, and it takes time and investment.
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