在车床上加工灰铸铁(HT20-40)时,实验测得6μm以下尘粒约占82～91％,严重地危害着工人的身体健康。我们参照有关资料设计制造的吸尘器(图1)基本上克服了车削时,尘污染问题,其设计制造方法如下. When machining gray cast iron (HT20-40) on a lathe, the experiment measured dust particles below 6μm accounting for 82-91%, seriously endangering the health of workers. We refer to the information design and manufacture of vacuum cleaners (Figure 1) basically overcome the turning, dust pollution, the design and manufacturing methods are as follows.