▎ 摘　　要

NOVELTY - Each function hole of one graphene layer is cylinder with ring washer, upper air cylinder pad comprises pad body and pad body is formed, the pad body is multi-layer composite structure, comprising two chip copper aluminum alloy piece position is on the layer above is as follows, copper aluminum alloy piece middle is clamped by a dash plating zinc and stainless steel plate as core plate, then on stainless steel plate and upper and lower copper aluminum alloy piece between respectively forming with one graphene layer. This utility new type high temperature resistance, corrosion resistance, can effective ensure the leak tightness of oil cylinder operation process.