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16 240 ZB 柴油机整体薄壁球铁活塞的实物外形和内部结构见图1。本文着重讨论燃烧室弧面部位、活塞顶部和避阀坑部位的超声波探伤方法。
16 240 ZB diesel engine overall thin-walled ductile iron piston shape and internal structure shown in Figure 1. This article focuses on the combustion chamber arc surface, the piston top and avoid valve pit ultrasonic flaw detection method.