In the chemical industry and other application fields, high requirements are placed on semi-finished products and processed parts of titanium and titanium alloys. Therefore, in the fields of aviation and aerospace, the cost of developing inspection instruments and monitoring devices is particularly high. The price of alloy parts has a great influence. Titanium alloy has the highest tensile plasticity and can be welded in various ways. It can be used for a long time at a temperature of up to 250 degrees Celsius. It is mainly used to make various structural parts of aircraft and engines that are not stressed. Industrial pure titanium has good plasticity, can form various sheet metal stamping parts in a cold state, and has relatively high corrosion resistance. Ti5Al2.5Sn titanium alloy has medium room temperature tensile strength (800 degrees Celsius 1000MPa and good welding performance. Compared with industrial pure titanium, the new titanium alloy mainly includes various grades of industrial pure titanium and widely used Ti5Al2.5Sn For titanium alloys, the room temperature tensile strength of industrial pure titanium fluctuates in the range of 350 degrees Celsius and 700 MPa. Ti5Al2.5Sn alloy has slightly lower plasticity and higher thermal strength, and the long-term working temperature can reach 450 degrees Celsius.
With the rapid development of cutting-edge science and technology such as aviation, aerospace, and nuclear energy, the requirements for materials are becoming more and more stringent. Not only are the materials used for manufacturing these equipment parts to be corrosion-resistant, wear-resistant, and anti-fretting, but also require high-end resistance. temperature. It is necessary to pay attention to the long-term test, in many places, before the large-scale application of titanium to the chemical industry. Under the test conditions, cooperate to test its service life and material structure. If the lack of safety (immaturity) due to the use of conventional structural data is mostly indicated and the economic benefits are not great, then the first step is to gradually develop titanium and its alloys, and in recent decades, the development of high technology in the field of structural data Various other mature new materials. Therefore, the military sector has developed faster in the application of titanium and its alloys than in the civilian sector.
In many industrial media, rare earth metals and precious metals are mainly used for stability, or materials such as stainless steel can only reach a certain limit in corrosion resistance. Most applications use titanium to obtain benefits due to its low density, corrosion resistance and high strength. So far. Moreover, the consumption cost is relatively high, so the application of titanium or titanium alloy can obtain relatively high corrosion resistance strength. The creep characteristics of hard titanium at temperatures exceeding 150T surpass that of aluminum and its alloys. Considering that compared with other materials, titanium alloys have the advantages of unique creep characteristics under low-density conditions. It is found that hard titanium is used in aircraft manufacturing and missile manufacturing. The importance of the application. The earliest application of titanium and titanium alloys is the aviation industry. Recently, the aviation industry has increasingly urgently needed high-strength and low-density materials, which has greatly promoted the development of titanium manufacturing. In the early 1950s, the United States successfully used titanium on aircraft. At that time, although an E aircraft only used 1% of the structural weight of titanium, it opened up a pioneering way of using titanium in the aviation industry. At present, many kinds of high-speed aircraft in the world widely use titanium alloy as a structural material.
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