1. The titanium and titanium alloy technology development present situation in our country
Titanium alloy research work of our country has developed rapidly under the government's strong support.Research mainly include high temperature titanium alloy, high strength, corrosion resistant titanium alloy, titanium alloy, titanium alloy, titanium alloy at low temperature, and biomedical titanium alloys, shape memory alloy titanium matrix composites, etc.Titanium alloy has a history of nearly 50 years of research.Early research unit of titanium alloy is mainly Beijing nonferrous metal research institute.Over the past 20 years, the northwest nonferrous metal research institute has gradually become the most important research and development of titanium alloys in our country.Metal research institute of Chinese academy of sciences, Beijing institute of aviation materials, luoyang institute of ship material and some universities are also actively involved in research and development of new type of titanium alloy, with the baoji titanium industry, Shanghai baosteel backbone titanium such as manufacturers, combine, form the relatively complete system of titanium alloy materials.
Research in our country about 60 kinds of titanium alloy has been put into industrial application of titanium and titanium alloy grades more than 40, one type of alpha titanium and titanium alloy grades have 22, alpha beta type two-phase titanium alloys 12, beta and nearly 9 beta titanium alloy, the most commonly used in industry of industrial pure titanium TA2 and TA3, brands have TC4 titanium alloy and TC11, TA9 and TA10, etc.
In China in terms of high temperature titanium alloys, engineering mature is TC4 titanium alloy (400 ℃), the TC6 (450 ℃), TCll (500 ℃), Ti - 53311 - s air (with 550 ℃) and 7715 d (600 ℃) aircraft with titanium alloy, and aircraft engine with 550 ℃, 600 ℃ and flame retardant titanium alloy titanium alloy is still in the stage of engineering test.
In terms of high strength titanium alloy, our country can produce 1100 mpa (such as TB6) and 1200 mpa aviation titanium alloy material (such as TA8) level.
In Marine titanium alloy, our country has achieved alloy series, can produce low strength (mpa), 320-490, (590-785 mpa), high strength (mpa), 690-1150 three yield strength grades of 13 species such as titanium alloy, surface ships and underwater submarine different parts of timber demand.
These new type of titanium alloy research and development, for China's new aircraft, new craft, advanced warships, new nuclear reactors developed provides a key to the new material, for the country's high-tech development and national defense construction has made great contribution.
2. The world will help titanium and titanium alloy titanium processing technology
The technical progress of titanium industry in China In aerospace, ships, nuclear power plants, and the great demand of the national economy as the guidance, through the technical transformation and technological innovation, through the strict production process control, comprehensively improve the quality of titanium products, vigorously develop high-end titanium products, especially the state and the market need, environmental protection and energy saving of titanium products, at the end of the 12th five-year plan, make high-end titanium products basic meet the needs of the country, export rate steady at 20% - 20% of titanium products.
Development ideas by titanium sponge titanium industry research for smelting by titanium smelting and processing technology research, establish a strict quality control system (that is, the process control system), developing countries need a high-end titanium products, comprehensively improve the quality of titanium products.
First is comprehensively improve the quality of titanium sponge, the zero order titanium sponge production yield above 70%.95 titanium (HBW hardness is less than 95) production yield of 35%, can batch production HBW hardness is less than 90 (including the impurities the iron content is 0.05% or less, oxygen content of 0.04% or less) of high-end titanium sponge.
The second is comprehensively improve the quality of titanium and its alloy ingot.Uniform can batch production of chemical and tissue composition, basic no high quality titanium alloy ingot metallurgical inclusion defects.On the basis of high quality sponge titanium and titanium alloy ingot, through technical innovation, technology innovation and strict quality process control, and comprehensively improve the quality of titanium processing materials.
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