Analysis Of The Causes Of Fish Bolt Failure

As a Railway Fastening System Manufacturer, let's analyze why the Fish Bolt has failed.

1. The connecting rod of the diesel engine is divided into several levels. In the inspection, it should be noted that different levels of connecting rods cannot be used. If the sloppy handle is messed up during the overhaul, the joint of the big joint of the connecting rod will not be tightly fitted, which will cause the connecting rod cover to loosen during the engine operation and cause the breakage of the connecting rod bolt of the fishplate.

2.Foil Bolt material problems, machining defects and heat treatment process problems can also cause the connecting rod bolts to break during engine operation.

3. The tightening torque is too large during assembly, the force is not uniform, and the tightening torque is too large, exceeding the yield limit of the Fish Bolt material. The connecting rod bolt is subjected to yield deformation and is broken by excessive elongation under the impact load.