The cylinder adopted in this equipment selects AA6061 aluminium alloy as its core material. As a widely used heat-treatable strengthened aluminium alloy, AA6061 boasts an extremely balanced set of comprehensive properties: it not only possesses moderate mechanical strength, enabling it to stably withstand the reciprocating loads and pressures during the cylinder’s operation, but also exhibits excellent toughness and fatigue resistance, which effectively prevents deformation or damage during long-term service. Meanwhile, this material features outstanding corrosion resistance—whether in a normal atmospheric environment or slightly humid and dusty working conditions, it can effectively resist oxidation and rust, thereby prolonging the cylinder’s service life. In addition, AA6061 aluminium alloy offers exceptional machinability, facilitating precision cutting, stamping, welding and other forming processes. It can accurately meet the cylinder’s strict requirements for dimensional accuracy, sealing performance and assembly compatibility. Furthermore, its prominent lightweight property allows it to reduce the overall energy consumption of the equipment while ensuring structural strength, providing reliable material support for the efficient and stable operation of the equipment.