大跃进以来,锉刀的供应非常紧张。因此,如何把使用过久而失去了锉削能力的锉刀翻新再用,具有实际的意义。我们学习有关先进经验,采用喷砂法翻新锉刀成功。这种方法就是利用急速的砂流射击在锉纹上,使锉刀的刃口很快地恢复了锉削能力。设备:我们利用热处理车间的喷砂设备;它的风压是75～85磅/时~2,用3～4号石英砂。另外再用一个如图1的工具。喷砂工艺:先把图1的工具放在喷砂房里,再把锉刀搁在工具上。喷砂时,喷嘴由A点移向B点,并使砂流随着移动在齿背喷射。喷嘴移动的速度 Since the Great Leap Forward, the supply of files has been very tight. Therefore, how to use the file that has been used for a long time and has lost the filing ability has the practical significance. We learn about the advanced experience, the use of sand blasting method to renovate the file successfully. This method is the use of rapid sand flow in the filing, so that the file edge quickly restored filing ability. Equipment: We use sandblasting equipment in the heat treatment plant; it has a wind pressure of 75-85 lbs / hr ~ 2 with 3 ~ 4 quartz sand. Another use of a tool as shown in Figure 1. Sand blasting process: first put the tool in Figure 1 blasting room, and then put the file on the tool. When blasting, the nozzle moves from point A to point B, and the sand flow is sprayed on the back of the tooth as it moves. The speed at which the nozzle moves