1500MPa grade titanium alloy bar rolling method, the specific implementation in accordance with the following steps: Step 1, choose Ti 6Al 4Mo 4Zr 2Sn 2Cr 1Fe 1Nb bar billet; Step 2. Under atmospheric atmosphere, the heating furnace is used to heat the bar blank selected in Step 1, and the heat preservation treatment is carried out. Step 3. Place the bar billet obtained after treatment in Step 2 on the horizontal rolling mill and roll to the finished bar billet by heating; Step 4. The finished bar billet rolled in Step 3 is successively treated by solution solution, aging treatment, and finally straightened and grinding to the finished titanium alloy bar. The invention relates to a rolling method of 1500MPa grade titanium alloy bar, and the tensile strength of the rolled high strength titanium alloy is more than 1500MPa, and the elongation rate and section shrinkage rate can reach 10% and 30% respectively.
Due to its high specific strength, good corrosion resistance, and service at high temperatures, titanium alloy is used as the main material in the design and manufacture of aircraft structural parts. In order to achieve a lot of weight reduction, increase the thrust-to-weight ratio, improve flight speed and endurance, aircraft frame beam steel and engine manufacturing nickel-based alloy is gradually replaced by titanium alloy.
With the development of aviation and aerospace technology, a+p titanium alloy with the general tensile strength of l000MPa ~ 1200MPa can no longer meet the requirements of aircraft design, while the design strength of 1321s 4-C titanium alloy with the tensile strength of about 1400MPa should be 1300MPa. Alloy steel is still used for many parts with service strength above 1500MPa. Therefore, the development of a super high strength titanium alloy with tensile strength up to 1600MPa and design strength of 1500MPa will play a great role in promoting China's aviation and space industry. A milking method of 1500MPa grade titanium alloy bar is developed. The tensile strength of rolled high strength titanium alloy exceeds 1500MPa, and the elongation and section shrinkage can reach 10% and 30%, respectively. The finished rolled bar billet is processed by solution solution, aging treatment, and finally straightening and grinding to the finished titanium alloy bar. The finished titanium alloy bar is a small specification titanium alloy bar with nominal composition Ti-6Al-4Mo-4Zr-2Sn_2Cr-lFe-lNb and tensile strength over 1500MPa.
