Zirconium and titanium have many similar physical and chemical properties. For example, their melting points are very high, pure titanium: 1668 ℃, pure zirconium: 1852 ℃. Zirconium and titanium have high chemical activity, and zirconium is higher than titanium, but the surface can form a dense passivation film, has a high corrosion resistance. Zirconium has better corrosion resistance than titanium in most highly corrosive media, which is why zirconium is more expensive than titanium, but is still used in many chemical applications. Because of zircon zirconium and hafnium are symbiosis in the mine, zirconium ore content of hafnium in about 2% of the zirconium content - 3%, zirconium and hafnium all aspects of the physical and chemical properties are similar, from the zirconium and hafnium symbiosis of zirconium in the mine producing zirconium hafnium content less than 0.01% of the high cost, but also because of the chemical and physical properties of zirconium and hafnium are extremely close, thus producing chemical grade zirconium are not reduce the content of hafnium, zirconium content of hafnium in general not more than 4.5%.
Zirconium and zirconium alloy ingot by forging, quenching and extrusion, processed into Φ 10 ~ 30 mm bar, and then to rotary forging, annealing, straightening and coreless grinding processing, finished product zirconium rods. The main equipment is rotary forging machine, internal heat vacuum annealing furnace, straightening machine and centerless grinding machine.
Application: zirconium bar is mainly used in the chemical and electronic industry, mainly for the corrosion resistance and conductivity of zirconium bar.
Process: hot rolling, cold rolling, pickling, shearing.
Features: zirconium is a rare metal with amazing corrosion resistance, high melting point, high hardness and strength, which is widely used in aerospace, military, nuclear reaction and atomic energy fields. The "god six" on the use of corrosion resistance, high temperature resistant titanium products, its corrosion resistance performance is far less than zirconium, its melting point of about 1600 degrees, and zirconium melting point is more than 1800 degrees, zirconium dioxide melting point is as high as 2700 degrees, so as an aerospace material, its performance is greatly superior to titanium.
