拉延工艺对钛合金汽车壳件性能的影响  

Effect of Drawing Process on Properties of Titanium Alloy Automobile Shell

作　　者：何莉[1] 

机构地区：[1]河南职业技术学院,河南郑州450046

出　　处：《热加工工艺》2017年第23期148-150,157,共4页Hot Working Technology

基　　金：河南省软科学研究计划项目(132400410039)

摘　　要：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。The titanium alloy automobile shell was drawn by using different blank holder forces and drawing speeds. And the wear resistance and impact property of the specimens were tested and analyzed. The results show that the wear resistance and impact property of the specimens firstly increase and then decrease, with blank holder force increasing from 150 kN to 350 kN or drawing speed increasing from 300 mm/s to 700 mm/s. Compared with the 150 kN blank holder force, the wear volume of the titanium alloy automobile shell sample formed by 250 kN blank holder force decreases by 54%, and the impact absorbing energy increases by 44%; compared with drawing speed at 300 mm/s, the wear volume of the titanium alloy automobile shell sample formed by drawing speed at 600 mm/s decreases by 44%, and the impact absorbing power increases by 30%. The optimized blank holder force and drawing speed of the titanium alloy automobile shell are 250 kN and 600 mrn/s, respectively.

关 键 词：压边力 拉延速度 钛合金汽车壳件 耐磨损性能 冲击性能 

分 类 号：TG386.41[金属学及工艺—金属压力加工]