Titanium is a very active metal and its chemical symbol is Ti, atomic number is 22, it is rich in resources, in the earth storage capacity, it is ranked third, it can be said that it is inexhaustible. It is a silver metal, the proportion is about 4.51, the melting point is 1668 degrees, it has good corrosion resistance, long service life and high recycling prices, the value of titanium scrap is still equivalent to more than 60% of raw materials procurement value, which can be said that titanium material is the most environmental material, titanium green environmental protection will not cause any adverse effects. The first investment of titanium plate and other materials is relatively large, but if it is used for many years, titanium plate is an economic, practical and ideal material. The ore used for producing the titanium in industry is rutile, titanic iron ore and titanium magnetite ore, due to the difficult separation and extraction, the titanium metal with industrial significance was produced until 40s of this century. Therefore titanium is generally referred to as rare light metals.

Titanium and titanium alloy have low density, high tensile strength, in the -253-600 degrees, its specific strength is almost the highest in metal materials, in appropriate oxidizing environment, it can be formed a thin and strong oxide film, which has excellent corrosion resistance. In addition, it also has non magnetic, small linear expansion coefficient, which makes titanium and alloy first be called for important aerospace structural materials, and subsequently extended to ship manufacturing, chemical industry and other fields, and gotten the rapid development. Especially in the field of chemical industry, more and more products used the titanium and titanium alloy products, such as petrochemical, fiber, pulp, chemical fertilizers, electrochemical and desalination and other industries, to be as the exchanger, the reaction tower, synthesizer, autoclave and so on. Titanium plate used in electrolysis and waste water desalination as titanium electrolytic plate, titanium electrolytic tank, in the titanium reaction tower, titanium reactor was used as the tower body and the kettle body and so on.