The piston ring is a marvel of metal engineering, designed as an elastic ring with significant outward expansion deformation. It is meticulously assembled within the profile and its matching annular groove. This ingenious component relies on the pressure variance of gas or liquid to create a robust seal between the ring's outer circumference and the cylinder, as well as between one side of the ring and the ring groove. Its dual capabilities in both reciprocating and rotating piston applications make it indispensable for reliable and efficient operation. The force acting on the piston ring is the gas pressure, the ring's own elastic force, the inertia force of the ring reciprocating motion, the friction between the ring and the cylinder and the ring groove. Due to the action of these forces, the ring will produce axial motion, radial motion, rotary motion and other basic motions. In addition, due to its movement characteristics, accompanied by irregular movement, the piston ring inevitably appears suspension and axial vibration, radial irregular movement and vibration, twisting movement caused by axial irregular movement. These irregular movements often prevent the piston ring from functioning. When designing the piston ring, it is necessary to give full play to the favorable movement and control the unfavorable side.
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