Development of Manufacturing Technology of Cold-drawn Steel tube for Cylinder Casing Service
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摘要: 介绍了运用平面应变理论,在预应力高刚性全液压冷拔管机上,通过专减壁厚拔管的变形方式,直接拔制液压气动缸筒用管。分析了拔管时的拔制力、合理减壁率及冷拔工艺与设备特点。提出了全面控制工艺系统精度是提高产品质量的关键。实践证明,采用高精度冷拔钢管制造缸筒,其强度、刚度高,耐磨性能好,且具有内表面硬外表面韧的特点。高精度冷拔缸筒管是直接制造各类缸筒的理想金属材料。Abstract: Based on the plane strain theory, the steel tube for hydraulic/pneumatic cylinder casing service is produced with the prestressed, hi-rigidity and full hydraulically-operated cold-drawing bench and the deformation process for wall thickness reduction only. The drawing force, desirable wall thickness reduction and characteristics of both the cold-drawing technology and equipment are discussed, emphasizing that to enhance product quality it is crucial to take an overall control of accuracy of the technological system. Relevant operation has proven that the cylinder casing made of the hi-precision cold-dawn steel tube provides such advantages as satisfactory strength, high rigidity, good wear-resistance as well as hard inner surface and tough outer surface. The said hi-precision cold-drawn steel tube for cylinder casing service as an excellent metallic material can be processed directly into various kinds of cylinder casings.
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