论文部分内容阅读
楔横轧是六十年代以后兴起的回转体零件的特种轧制加工新工艺。近些年来,它优于其他特轧工艺得到了突飞猛进的发展。根据国外资料,楔横轧有相当可观的经济效果:可降低零件成本20～30％;减少工资费用20～60％;降低材料消耗20～60％;零件的疲劳强度提高150～200％;零件的耐磨性提高20～40％;提高劳动生产率400％以上。自行车曲柄是带有两个大头的变截面杆类零件,完全符合楔横轧工艺加工典型零件的特点,故用楔横轧备坯,封闭锻造为终成形生产
Cross wedge rolling is the rise of the sixties after the revolving body parts of the special rolling new technology. In recent years, it is superior to other special rolling process has been rapid development. According to foreign data, cross wedge rolling has a considerable economic effect: can reduce the cost of parts 20 ~ 30%; reduce wage costs 20 ~ 60%; reduce material consumption 20 ~ 60%; parts fatigue strength increased 150 ~ 200%; parts Wear resistance increased by 20 ~ 40%; improve labor productivity of more than 400%. Bicycle crank is a variable-section rod with two big parts, in full compliance with the characteristics of the wedge cross-rolling process typical parts, so the cross wedge cross-billet preparation, closed forging for the final forming production