Fracture Analysis and Process Optimization of Piston Rod of Driving Mechanism
In view of the piston rod fracture of the driving mechanism in a certain blade extension test,the piston rod is gradually tested by experiment,simulation,process analysis and optimization verification,and the cause of fracture of piston rod is clarified.The results show that the fracture is due to the unreasonable heat treatment process of 40Cr steel,which leads to the large hardness gap between the central part of the piston rod and the surface,resulting in insufficient actual strength,and tensile fracture occurs in the weakest position of the piston rod under high stress impact.The product process and inspection method were optimized and improved,and the product was prepared by the sub-temperature quenching process to effectively solve the problem.
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