机器在工作过程中 ,其零部件表面难免沾上泥土、油污、水垢或产生铁锈等。在对机器进行维修和保养时 ,必须将这些尘垢清洗干净 ,否则将缩短机器的使用寿命。1 清洗机械零件三原则(1)先易后难 ,即先清除零部件表面的泥土 ,再清洗内部 ;先清洗脏污程度轻的零件 ,然后清洗脏污严重 Machine in the course of their work, the parts surface inevitably stained with dirt, oil, scale or produce rust and so on. In the maintenance and repair of the machine, you must clean these dirt, otherwise it will shorten the life of the machine. 1 three principles of cleaning machinery parts (1) first easy after the hard, that is, parts of the surface of the first clear the dirt, and then clean the interior; first clean the light dirt parts, and then clean the dirty