论文部分内容阅读
我们知道,发动机气门座的工作条件极其恶劣,在承受磨粒磨损和冲击载荷作用的同时,排气门还因高温燃烧气体的腐蚀和烧蚀,发生磨损和变形,当这种磨损及变形超过一定值时,就会严重影响发动机工作性能,这时就需要对气门机构进行保养和维护,恢复气门和气门座的良好密封性,以恢复发动机良好的技术状态。 气门座的铰削修复工作通常采用手工铰削的方法来进行,其具体工艺过程为:选择合适的刀杆;去除硬化层;粗铰,试配;精铰;密封检验等。 以下着重谈谈试配过程中气门应与气门头部接触环带偏高(即靠近气
We know that the working conditions of the engine valve seat are extremely poor. In addition to the effect of abrasive wear and impact load, the exhaust valve also suffers wear and deformation due to the corrosion and ablation of the high-temperature combustion gas. When the wear and deformation exceed A certain value, it will seriously affect the engine performance, then you need to maintain and maintain the valve mechanism, valve and valve seat to restore a good seal to restore the engine good technical condition. Reaming valve repair work is usually carried out by manual reaming method, the specific process is: choose the right arbor; remove the hardened layer; Rough, test; fine hinge; seal inspection. The following focuses on the trial process should valve and valve head contact with the ring is high (that is, near the gas