连杆螺栓是发动机的重要紧固件,连杆螺栓在运行中一旦松动或断裂很可能引起严重的捣缸事故,它不仅会打坏缸盖、缸套,使连杆变形弯曲,甚至还会造成捣破机体、折断曲轴等重大经济损失。据统计资料显示,在整个柴油机机损事故中,螺栓折断事故占机损事故的53.1%。因此,在使用连杆螺栓过程中,必 Connecting rod bolts are the important fasteners of the engine. Connecting rod bolts loose or broken in operation may cause serious tampering. Not only will it break the cylinder head and cylinder liner, but also bend the connecting rod and even Smashed body, broken crankshaft and other major economic losses. According to statistics, in the whole diesel engine damage accident, bolt breakage accidents accounted for 53.1% of the damage accidents. Therefore, the use of connecting rod bolts, must