Comparison of High Precision Hot Extrusion Technology of Titanium alloy
China's titanium and titanium alloy extrusion: production began in the late 1960s. At that time, Bao Titanium and the Great Wall Steel from Germany, respectively, the introduction of 3150 tons of extruded titanium alloy hot extrusion machine. After nearly 40 years of development, Bao Titanium Company can squeeze titanium and titanium alloy for a variety of tubes, bars and simple sections of the profiles and composite materials, dozens of grades. These products have been extensively used in aviation, aerospace, satellite and energy, chemical and other sectors of the national economy.
However, China and advanced countries, there are still large gaps. More complex sections of the profile cannot produce. In recent years, with the chemical and other civilian areas of high-quality titanium tube surge in demand, Western Titanium, Zhejiang Wuhuan and other companies have introduced mainly for extrusion titanium tube extrusion machine. 2009 Baoji City Pioneer Metal Materials Technology Co., Ltd. in Meixian Science and Technology Industrial Park 5000T extrusion machine production, Northwest China's largest titanium extrusion pipe production base for the Northwest region to produce large-scale titanium tubes and profiles to provide the necessary equipment , Marking China's titanium extrusion equipment on a new level.
The United States of large diameter titanium extrusion pipe: the production of the world's leading level. The United States will be diameter (48 ~ 610) mm mm 2600mm Ti-6Al-4V-Ru alloy tubes for geothermal, offshore drilling pipe. US RMI company diameter mm (22 ~ 25) mm 35000mm long Ti-3Al-2.5V-Ru alloy tube for submarine oil extraction. In addition, in the Norwegian North Sea drilling support platform riser with a diameter of mm mm 15000mm Ti-6Al-4V ELI alloy tube.
Internationally, the development of titanium tubes is relatively slow, only the United States Titanium Sports Technology company using extrusion and stretching method to produce square, rectangular, triangular, oval, pentagonal, hexagonal and octagonal and other shapes of the tube , To become the world's only company producing titanium tube. At present, the application of titanium tube is not wide enough, the amount is not large, but in the construction, sports and leisure and special projects and other fields, there is a huge potential market.
Russia's titanium alloy test work began in 1953, in the last century in 60's for the rapid development of aviation technology to provide a variety of thin-walled profiles, wing-wing profiles, hollow profiles, large profiles and wall panels. Since then, Russia's titanium extrusion profile technology in the world's advanced level. Its production of titanium alloy brands up to 10, the specifications of more than 2,000 kinds. For example: the production of OT4, OT4-1, BT20, BT14, BT15 alloy thin-walled profiles, the web thickness of 1.5 to 5mm, web thickness tolerance of 0.5mm.
Russia on the Salda metallurgical co-production enterprises (VSMPO) extrusion pipe, rods and profiles in addition to domestic use, but also a large number of exports to the United States and the European aircraft manufacturing and supply manufacturers. In addition to aerospace, VSMPO company's Pd, Ru alloy Ti-6Al-4V alloy tube is also for oil extraction.
