As far as the world is concerned, titanium spectacle frames first appeared in the United States and Japan. It was in the early 1980s, and it has been 40 years. China's titanium spectacle frames are about 20 years later than Japan, and they are now quite popular. In 2021, there will be about 250 million elderly people over the age of 60, and about 50 million people in other age groups need to use glasses to correct their vision. Therefore, China currently has more than 300 million pairs of glasses, and it is estimated that titanium glasses may reach 100 million pairs.
Why are there so many titanium glasses?
Mainly because titanium and titanium alloys have a series of irreplaceable excellent properties. There are three main advantages: high specific strength, light weight and toughness. The density of titanium is 4.51 g/cm3. Among the commonly used metal materials, titanium alloy has the largest specific strength, which is 29 (MPa/cm3/g), Strong corrosion resistance. Because titanium and titanium alloys have a thin and solid oxide film with strong corrosion resistance, which has strong corrosion resistance to chemical substances and various domestic pollutants, as well as human sweat and other excrement; titanium and titanium alloys have excellent compatibility with body fluids and other organs.
The spectacle frame structure is composed of 6 parts, including spectacle frame, temple, pince-in frame, hinge, bending angle piece and pince-pin plate.
The titanium wire used in the frame includes pure titanium, titanium-nickel alloy and beta titanium alloy. Japan's Fukui Prefecture is one of Japan's titanium frames and one of the world's titanium frame manufacturing centers. 90% of the titanium frames made in Japan. In 1981, the development of Ti-Ni alloy frames was started, and they were sold in 1986. The elegant and soft feeling is deeply loved by users, and titanium alloy has become the best material for the preparation of spectacle frames.