一、带铸铁缸套的气缸图1所示为二冲程发动机带有铸铁缸套的气缸铸件毛坯,这种缸套具有空心的“袋”或“疱”,以加工成扫气口.图2所示是缸套铸入气缸之前的情况.“疱”周围的铸铁壁具有箱形的断面,非常坚硬,妨碍了均匀的热膨胀.这些“疱”还有碍于使铝缸体和铸铁缸套在 Cylinder with Cast Iron Cylinder Liner Figure 1 shows a cylinder casting blank with a two-stroke engine with cast iron cylinder liner with a hollow “bag” or “blister” for processing into a scavenging port. This is the case before the liner is cast into the cylinder. “The cast iron walls around the blisters have a box-shaped cross-section that is very hard and hinders uniform thermal expansion.” These blisters also prevent the aluminum cylinder and cast iron cylinder liner from