Problem with the pressure application at the connection between the compressor piston rod and the crosshead
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The crosshead and piston rod are assembled as pressure-volume components; oil is injected using an ultra-high pressure pump to cause elastic deformation of the piston rod, thereby achieving disassembly or tightening. The machines produced by SHENGU typically operate at a pressure of 150 MPA, with the piston rod made of 42CrMOE material. Excuse me, theoretically, for a piston rod with a diameter of 60, what pressure in MPa is required to stretch it beyond its elastic deformation limit, thereby preventing it from returning to its original length after pressure is released, or even causing the piston rod to break?
The compression pressure is 75Mpa–150Mpa; it is applied in several stages, rather than being reached at 150Mpa all at once