在农机维修中,有些机手和维修人员为图省事、节省成本,会使用一些“小聪明”。其实,有不少“小聪明”是不可取的,会产生相反的效果。1.安装活塞鞘明火加温由于活塞鞘座处较厚,其他部分较薄,明火加温后的热膨胀系数很大,容易使活塞变形。一般明火加温温度较高,在自然冷却过程中,里边的金属组 In the maintenance of agricultural machinery, some of the hands and maintenance personnel to save trouble, save costs, will use some “smart”. In fact, many “smart” is not desirable, will have the opposite effect. 1. Install the piston sheath open fire heating As the piston sheath seat thicker, other parts of the thin, large fire after thermal expansion coefficient, easy to deform piston. Generally open flame heating temperature is higher, in the natural cooling process, inside the metal group