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采用不同压边力和拉延速度对钛合金汽车壳件进行了拉延,并测试和分析了试样耐磨损性能和冲击性能。结果表明,随压边力从150 k N增大至350 k N或拉延速度从300 mm/s增大至700 mm/s,试样的耐磨损性能和冲击性能先提高后下降。与150 k N压边力相比,经250 k N压边力成形的钛合金汽车壳件试样磨损体积减小了54%,冲击吸收功增大了44%;与300 mm/s拉延速度相比,经600 mm/s拉延速度成形的钛合金汽车壳件试样磨损体积减小了44%,冲击吸收功增大了30%。钛合金汽车壳件的最佳压边力和拉延速度为:250 k N和600 mm/s。
Using different blank holder force and drawing speed, the titanium alloy automobile shell was drawn, and the wear resistance and impact performance of the sample were tested and analyzed. The results show that with the increase of blank holder force from 150 kN to 350 kN or the increase of drawing speed from 300 mm / s to 700 mm / s, the wear resistance and impact resistance of the sample first increase and then decrease. Compared with the 150 kN blank holder force, the wear volume of the titanium alloy automotive shell formed by 250 kN blank holder force decreased by 54% and the impact absorption work increased by 44%. Compared with 300 mm / s drawing Compared with the speed, the wear volume of the titanium alloy automotive shell formed by 600 mm / s drawing speed decreased by 44% and the impact absorption work increased by 30%. The optimum blank holding force and drawing speed for titanium alloy automotive shell are: 250 kN and 600 mm / s.