2025-02-17
When the piston of the hydraulic piston pump discharges oil in the cylinder bore, the hydraulic pressure acts on the hollow bore of the piston. At the same time, the hydraulic pressure acts on the inner wall of the piston bore. When the pressure exceeds the upper limit that the piston metal material can withstand, the piston metal material undergoes plastic deformation and creep under supercritica
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