论文部分内容阅读
通常,铝合金零件的加工方法有车、铣和冲压。我厂对一些要求较高的零件采用了特殊的加工方法,提高了零件的表面质量。滚压法我厂生产的大型硒静电复印机的硒鼓,材料为LF21,尺寸φ240×640的中空零件。LF21属于防锈铝,为Al—Mn系合金,含Mn1.0～1.6％,在退火状态下塑性高。其特点是不能热处理强化,只能用冷作硬化强化,强度低、塑性高,切削性不良,只宜制造受轻负荷的零件。对于这个零件,我厂设计了一个普通的鼓形滚轮。其宽良40mm,中心处直径φ39,鼓形半径R135,材料为CrW(?)n。通过鼓轮杆夹持在C630车床的刀架上,在精车后进行滚压加工,使滚压前的▽6表面提高到▽9,满足了后续镀硒工序的要求,并使表面残留张应力变成残留压应力,大大提高了工件的疲劳强度。滚压加工方法简
In general, the machining of aluminum alloy parts includes car, milling and stamping. I plant some of the more demanding parts using a special processing methods to improve the surface quality of parts. Rolling method I plant a large selenium electrostatic copier toner cartridge, the material is LF21, size φ240 × 640 hollow parts. LF21 is a rust-proof aluminum, Al-Mn alloy, containing Mn1.0 ~ 1.6%, high plasticity in the annealed state. It is characterized by heat treatment can not be strengthened, only hardened with cold hardening, low strength, high plasticity, poor machinability, should only be manufactured by light-load parts. For this part, I design an ordinary drum wheel. Its wide good 40mm, the center diameter φ39, drum radius R135, the material is CrW (?) N. By the drum lever clamp on the C630 lathe turret, after the fine car rolling processing, so that before rolling ▽ 6 surface to ▽ 9, to meet the subsequent selenium plating process requirements, and the surface of residual sheets Stress into residual compressive stress, greatly improving the fatigue strength of the workpiece. Rolling method is simple