The Uses Of High Strength Titanium Alloy Bars?
Titanium alloy rod has the advantages of high strength, low density, good mechanical properties, good toughness, corrosion resistance and so on. In addition, titanium alloy rod process performance is poor, cutting difficulties, hot processing is easy to absorb hydrogen, oxygen, nitrogen, carbon and other impurities, poor wear resistance, complex production process. Industrial production of titanium began in 1948. In order to meet the needs of the development of aviation industry, titanium industry is developing at an average annual rate of about 8%. At present, the global annual output of titanium alloy rod processing materials has reached more than 40,000 tons, and there are nearly 30 titanium alloy rod brands. Widely used titanium bars are Ti-6Al-4V (TC4), Ti-5Al-2.5Sn (TA7) and industrial pure titanium (TA1, TA2 and TA3).
(1) High strength of titanium alloy bar
The density of titanium alloy can be analyzed generally around 4.5g/cm3, which is only 60% of steel. The strength of pure titanium is close to the strength of ordinary steel in our enterprise. Some problems have high strength and the strength of titanium alloy exceeds that of alloy structural steel in many related studies. Therefore, the specific strength (strength/density) of titanium alloy is much higher than that of other metal industrial structure design materials, which can produce high working strength, good rigidity and light weight parts. At present, Chinese traditional titanium alloy is mainly used in engine work of Chinese aircraft through components, skeleton, skin, fasteners and landing gear.
(2) High thermal strength of titanium alloy rod
Temperature is higher than aluminum alloy hundreds of degrees, can maintain the required strength under medium temperature, in the 450 ー 500 ° c to work long hours, than the strength within 150 ー 500 ° c is still high, than the strength of aluminum alloy at 150 ° c to drop, titanium alloy working temperature can reach 500 ° c, Aluminum alloys operate at temperatures below 200 ° c.
3) The corrosion resistance of titanium alloy rod is good
The corrosion resistance of titanium alloy is obviously better than that of stainless steel in humid atmosphere and seawater, and it has good corrosion resistance to alkali, chlorine, chlorine, nitric acid, sulfuric acid and so on. But the corrosion resistance of titanium to reduced oxygen and chromate medium is poor.
(4) The low temperature performance of titanium alloy rod is good
The mechanical properties of titanium alloy can be maintained at low and ultra-low temperatures. Titanium alloys with good low-temperature performance and very low clearance design elements, such as TA7, can maintain a certain plasticity at -253℃ by themselves. Therefore, the development of titanium alloy is also an important low-temperature product structure material.
