Titanium is a metal having a high degree of chemical activity. However, it emerged in many corrosive media particularly excellent corrosion resistance. The reason is titanium and has a good affinity for oxygen, react with oxygen to produce highly strong and dense layer of oxide film on the surface of the blunt.
Aerospace titanium castings
2014年3月20日星期四
、Titanium alloy valve can withstand high temperatures range
High temperature Sunrui titanium sheet metal rods mainly Tilloo, IMI834, Ti6242, BT20, mainly used for aero-engine structures. To meet the special requirements of high-temperature and high-temperature creep strength, which Till00 and IMI834 the temperature up to 600 ℃.
In order to improve the use of titanium check valve rod temperature, reducing the weight of the material, titanium-aluminum-based metal between sets of objects has been attracting much attention, due to the difficulty of forging, casting more suitable for forming a titanium aluminum, has a lot of engine parts, or are ready to adopt titanium alloy sheets material casting, the world's major engine manufacturers GE, PwA, Rolls-Roycc have asked for Ti-A1 metal compounds in-depth research, such as the United States Howmet TiAl low pressure turbine blades are studying, and used to replace the cast Inco713 leaves, using a temperature of 650-700 ℃; GE company is the Ti48A12Cr2Nb fifth stage low pressure turbine blades for the CF6-80C engine temperature up 760Y, successfully tested / 1500 analog K line cycle.
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