Application and selection of titanium alloy valve

Great effect on the mechanical properties of O, C and N impurities often exist in titanium to titanium, which can enhance the strength of titanium and reduce its plasticity, the larger N, effect of C is low, the effect of intermediate O. In addition, B, Be and Al elements to improve the impact strength of the larger Ti, Cr, Mo, Mn, Fe, V and Sn on the strength of titanium has little effect. Al is often used as a stable elements of alpha, alpha + beta type titanium alloy and alloy elements, a grain of alloy, improve the recrystallization titanium sponge temperature and phase transition temperature, and a significant strengthening effect, and can reduce the alloy density, increase the elastic modulus. Mo is often used as the stable elements, beta beta alpha + beta type titanium alloy and alloy elements, is not significantly reduces the material plastic case, strengthen the role of the larger, can also improve the fracture toughness, the corrosion resistance of materials, reduce the stress corrosion sensitivity.

Titanium and titanium alloy of high strength, low density and other properties make it widely used in aerospace engineering. Such as various pipeline aircraft on the extensive use of titanium alloy valve, Titanium castingstype relates to the cut-off valve, check valve, needle valve, plug valve, ball valve and butterfly valve. Titanium valve as the key system components conveying fluid control titanium alloy pipe, widely used in chemical engineering. Valve valve with fasteners as important component, is also very important in valve design, manufacture. Implemented in a large PTA project mass production and application. Titanium valve is widely used in chemical industry, but must pay attention to its not suitable for any chemical medium. The hydrofluoric acid, hydrochloric acid, sulfuric acid and phosphoric acid and oxalic acid, formic acid, hot concentrated three chloroacetic acid, three trifluoroacetic acid and strong corrosive aluminum chloride, have severe corrosion effect of titanium and titanium alloy, titanium valve is not suitable for this kind of chemical medium, should pay attention to in use.