NiTinols are mainly used in the manufacture of aircraft and automobile engine centrifugal compressor components
志联
2024-01-05
I. NiTinol How does the tube
1. NiTinol The relative density is generally around 4.51 g/cubic decimeter, only 60% of steel. The hardness of titanium alloy is close to that of ordinary steel, and some high-toughness titanium alloys exceed the strength of many alloy structural steels. Therefore, the specific strength (compressive strength/relative density) of titanium alloy is much higher than that of other metal component raw materials, and the parts made have high strength, good rigidity, and light weight.
2. The application temperature is more than one thousand degrees higher than that of aluminum alloy, and it can still maintain the specified compressive strength at medium temperature. It can work for a long time at a temperature of 450～500℃. NiTinol-titanium The alloy still has high specific strength in the range of 150℃～500℃, while the specific strength of aluminum alloy decreases significantly at 150℃. The working temperature of titanium alloy can reach 500℃, while that of aluminum alloy is within 200℃.
3. NiTinol With its excellent characteristics, titanium alloy has gradually become one of the new key structural materials used in the aerospace industry. Titanium alloy is between aluminum and steel in terms of proportional strength and compressive strength, and application temperature range. However, titanium alloy itself also has more excellent characteristics, that is, it has high specific strength, and also has very good seawater corrosion resistance and low-temperature performance.
4. Titanium alloy can still maintain its structural mechanical properties in low-temperature environments and at low temperatures. It has good ultra-low temperature performance. Titanium alloys with very low interstitial elements, such as TA7, can still maintain a certain plasticity at -253℃. Therefore, NiTinol It is also an important ultra-low temperature structural material.
II. Main uses of titanium alloy tubes
1. Titanium alloys are mainly used to manufacture aircraft engine centrifugal compressor components, followed by parts for rockets, ballistic missiles, and high-speed aircraft. By the late 1960s, titanium and its alloys had been used in general industry, used to make electrodes for the electrolytic industry, coolers for power plants, electric heaters for oil refining and seawater desalination equipment, and air pollution control systems, etc. Titanium and its alloys have become a corrosion-resistant structural material. They are also used to produce hydrogen storage materials and shape memory alloys.
2. According to their main uses, titanium alloys can be divided into high-temperature alloys, high-strength alloys, corrosion-resistant alloys (titanium-molybdenum, titanium-palladium alloys, etc.), ultra-low temperature alloys, and special functional alloys (titanium-iron hydrogen storage materials and titanium-NiTinol memory alloys), etc.
Titanium alloy shows a gray luster. In terms of color, it is dimmer than ordinary stainless steel, thus appearing more low-key. This characteristic can also better highlight the modern sense of the watch, complementing the sporty style. From the perspective of repairability, titanium alloy is not as worry-free as stainless steel. The repair difficulty of titanium alloy is much higher than that of stainless steel, so the requirements for the appearance of titanium alloy watches are more stringent in the secondary market.
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