Titanium alloy refers to a variety of alloy metals made of titanium and other metals. Titanium alloy has high strength, good corrosion resistance and high heat resistance. In terms of the industrial chain, the upstream of titanium alloy materials is mainly sponge titanium, which is processed into various titanium alloy plates, pipes, rods, wires, rings, etc. through the midstream, and then widely used in the chemical industry, aerospace, marine energy, Transportation and various emerging industries, etc.
1.The main uses of titanium alloys in aircraft are as follows:
(1.)Reduce structural weight and improve structural efficiency: Advanced combat performance (such as supersonic aircraft) requires the aircraft to have a relatively low structural weight factor (ie: body structural weight/aircraft normal take-off weight), and titanium alloy has a strength close to that of medium-strength steel But the density is small, instead of structural steel and superalloy, it can greatly reduce the weight of the structure.
(2.)Meet the requirements of high-temperature parts: titanium alloy has the characteristics of good heat resistance, such as the commonly used Ti-6Al-4V can work at 350 ° C for a long time, so it can replace high-temperature parts in the high-temperature parts of the aircraft (such as the rear fuselage, etc.) The use of aluminum alloys whose performance cannot meet the requirements; TC11 can work for a long time at 500 ° C, and can replace high-temperature alloys and stainless steel in the compressor part of the engine.
(3.)Meet the requirements of matching with the structure of composite materials: In order to reduce the weight of the structure and meet the requirements of stealth, advanced aircraft use a large number of composite materials. The strength and stiffness of titanium alloy and composite materials are well matched, and a good weight reduction effect can be obtained. At the same time, since the potentials of the two are relatively close, galvanic corrosion is not easy to occur, so the structural parts and fasteners in the corresponding parts should be made of titanium alloy.
(4.)Meet the requirements of high corrosion resistance and long life: Titanium alloy has high fatigue life and excellent corrosion resistance, which can improve the corrosion resistance and life of the structure, and meet the requirements of high reliability and long life of advanced aircraft and engines.
(1.)The preferred way to reduce the weight of automobiles is to replace traditional automobile materials (steel) with lightweight materials with high specific strength, such as aluminum, magnesium, titanium, etc.
(2.)Titanium has been used in racing cars for many years. At present, almost all racing cars use titanium materials. The titanium used in Japanese cars has exceeded 600 tons. With the development of the global auto industry, the titanium used in cars is still increasing rapidly.
3.Medical
(1.)Compared with other metal materials, the advantages of using titanium and titanium alloys are as follows: 1. Light weight; 2. Low elastic modulus; 3. Non-magnetic; 4. Non-toxic; 5. Corrosion resistance; 6. High strength and good toughness. The amount of titanium alloy used in surgical implants is growing at a rate of 5%-7% per year.
4.Chemical
(1.)Titanium has excellent corrosion resistance, mechanical properties and process properties, and is widely used in many sectors of the national economy. Especially in chemical production, titanium is used instead of stainless steel, nickel-based alloys and other rare metals as corrosion-resistant materials. This is of great significance to increase production, improve product quality, extend equipment life, reduce consumption, reduce energy consumption, reduce costs, prevent pollution, improve working conditions and increase labor productivity.
(2.)Titanium metal has become one of the main anti-corrosion materials in chemical equipment, and has established its corrosion-resistant status in chemical equipment. As an ideal material in chemical equipment, titanium has attracted more and more attention from engineers and technicians.
(3.)After years of promotion, titanium and its alloys have been widely used in chemical production as an excellent corrosion-resistant structural material. At present, the application of titanium equipment has expanded from the initial soda ash and caustic soda industry to chlorate, ammonium chloride, urea, organic synthesis, dyes, inorganic salts, pesticides, synthetic fibers, fertilizers, and fine chemicals. From small and single to large and diverse.
(4.)Titanium heat exchangers accounted for 57%, titanium anodes accounted for 20%, titanium containers accounted for 16%, and others accounted for 7%. In the chemical industry, “two alkalis” are the main ones, and titanium heat exchangers are used in the largest amount in chemical equipment.
Titanium tube
