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制造缸筒的新材料近几年用来制造液压缸的新材料有所发展,其目的主要在于提高制造液压缸的生产率和降低成本。过去几年已有内孔已加工完毕的液压缸筒坯料和镀过铬的活塞杆出售,但缸筒坯料为无缝管。新出现的冷板管坯料,则用接缝管制造,管坯焊接后经热处理,使焊缝物理性能与母体一致,然后涡流探伤、超声探伤,最后冷拔成形及退火消除内应力,珩磨内孔后即可使用。管径φ16～482毫米,壁厚1.65～15毫米。
New Materials for Making Cylinders New materials used to make hydraulic cylinders have evolved in recent years with the goal of increasing the productivity of manufacturing cylinders and reducing costs. In the past few years there have been sold in the inner hole of the cylinder bore and chrome plated piston rod sold, but the cylinder blank is seamless. Emerging cold-rolled plate blank, the use of seam pipe manufacturing, welded tube after heat treatment, the physical properties of the weld line with the mother, and then eddy current testing, ultrasonic testing, the final cold forming and annealing to eliminate stress, honing Can be used after hole. Diameter φ16 ~ 482 mm, wall thickness 1.65 ~ 15 mm.