Titanium alloy has high strength and small density, good mechanical properties, toughness and corrosion resistance. In addition, the process performance of titanium alloy is poor, cutting difficult, in hot processing, very easy to absorb impurities such as hydrogen, oxygen, nitrogen and carbon. There is poor wear resistance, the production process is complex. Industrial production of titanium began in 1948. The development of the aviation industry requires the titanium industry to grow at an average annual growth rate of about 8%. At present, the world's annual output of titanium alloy processing materials has reached more than 40,000 tons, nearly 30 kinds of titanium alloy brand. The most widely used titanium alloys are ti-6al-4v (TC4), ti-5al-2.5 Sn(TA7) and industrial pure titanium (TA1, TA2 and TA3).
Titanium alloys are mainly used to make compressor parts for aircraft engines, followed by structural parts for rockets, missiles and high-speed aircraft. By the mid-1960s, titanium and its alloys had been used in general industry, making electrodes for the electrolytic industry, condensers for power stations, heaters for oil refining and desalination, and environmental pollution control devices. Titanium and its alloys have become a kind of corrosion resistant structural materials. In addition, it is also used to produce hydrogen storage materials and shape memory alloys.
TA1 elastic wire or plate, which is more elastic than ordinary industrial pure titanium plate, and also easy to do shape processing, the market price is about 150-200; There is also a TC4, slightly better elasticity than pure titanium, but cloth hardness about HRC30, similar to stainless steel, in cold bending state prone to crack, barely able to do, but not conventional material, the price is medium, 200-300 or so; Do eyes titanium wire make material should be 15333, the processing technology is higher than pure titanium, it is better than pure titanium and titanium alloy other strength, fatigue resistance and environment corrosion resistance, shape plasticity is good, solid solution state, its low modulus of elasticity is about 80 GPa, slightly higher than the elastic modulus of nickel titanium shape memory alloy (around 60 GPa), it has a high elasticity restoring force (that is, the great distance without permanent deformation after bending the arch wire), hardness is low, easy to shape, can form a complicated shape, bending or without fracture. The eyeglass frame made by it makes up the insufficiency of the elasticity of pure titanium mirror frame and mirror leg, good elasticity and memory characteristics, and the processing performance and welding of titanium alloy are excellent. The eyeglass frame made by it has many shapes and styles, which is the production material of the new generation of glasses.
