液胀成形双金属复合管专用超高压模具装置

摘要

A mold set for liquid forming of double metal composite tube is introduced. The mold set can be automatical y adapted to the inner tube and tube axial length variation, and be automatical y balanced with the change of bulging force and axial force. It is used to overcome the unstable and uneasy control defects of the forming equipment system. At the same time, it can be satisfied with the reliable sealing of the large diameter deformation in the forming process. Eventual y it can make the inner and outer pipes fit closely under the action of the ultra high pressure liquid. It has the advantages of simple structure, convenient control, high reliability and low cost.%介绍了一种用于液胀成形双金属复合管的模具。该装置具有自动适应内衬管和基管轴向长度变化量不等的特点，并能随着胀形力的变化与其轴向力自动可靠平衡，克服了成形设备的平衡力不稳定和控制复杂、易造成复合钢管质量不稳定的缺点，并能满足成形过程中由于超高压力产生的直径方向大变形量的可靠密封，使复合管内衬管在超高压液体的作用下与基管紧密结合，具有结构简单、控制方便、可靠性高、成本低等优点。