Process Properties Of Industrially Pure Titanium

Titanium has plasticity. The elongation of high-purity titanium can be up to 50 ~ 60%, section shrinkage of up to 70 ~ 80%. Despite the low strength of high-purity titanium, but pure industrial titanium contains a small number of impurities and add alloying elements can significantly strengthen its mechanical properties, so that its strength can be compared with high strength. That is to say, pure industrial titanium tube, as long as it contains a small amount of interstitial impurities and other metal impurities, you can make it both high strength, but also has the appropriate plasticity. Industrial pure titanium tube specific strength (strength to weight ratio) in the metal structure material is very high, its strength and steel, but its weight is only 57% of steel. In addition, the heat resistance of the titanium tube is very strong, in the atmosphere of 500 ℃ can still maintain good strength and stability. Titanium tube also has good low temperature resistance, even at -250 ℃ under the ultra-low temperature, it still has a high impact strength, can withstand high pressure vibration. Another significant feature of industrial pure titanium tube is corrosion resistance, which is due to its affinity for oxygen is particularly large, can generate a dense layer of oxidized film on its surface, can protect the titanium from corrosion of the medium. Therefore, titanium in acidic, alkaline, neutral saline solution and oxidizing media with good stability, than the existing stainless steel and other non-ferrous metals have good corrosion resistance. Industrial pure titanium tube has a wide range of applications, the current industrial pure titanium tube is not only in the aerospace, aviation industry has a very important application, but also has been in the chemical industry, petroleum, light industry, power generation and many other industrial sectors are widely used. Due to the pure industrial titanium tube has a light weight, high strength, heat resistance, corrosion resistance and many other excellent characteristics, known as the "future of the metal", is a new structural material with great prospects for development.

Titanium can be forged, rolled, extruded, stamped and other pressure processing, in principle, the equipment used to heat the steel can be used for titanium heating, the requirements of the furnace atmosphere to maintain a neutral or weak oxidizing atmosphere, allowing the use of hydrogen heating.

Titanium flexural strength ratio (σ0.2 / σb) is high, generally between 0.70 ~ 0.95, deformation resistance, and titanium's modulus of elasticity is relatively low, so titanium in the processing of molding is more difficult. Pure titanium has good welding properties, weld strength, ductility and corrosion resistance is similar to the base material. In order to prevent contamination during welding, must use tungsten argon gas protection welding.

Titanium cutting process is more difficult, the main reason is that titanium friction coefficient is large, poor thermal conductivity, the heat is mainly concentrated in the tip of the knife, so that the tip of the knife quickly soften. At the same time, titanium's chemical activity is high, the temperature rises easily adhere to the tool, resulting in bonded wear. In the cutting process, the tool material should be correctly selected, keep the tool sharp, and use a good cooling process.