摘要
参照实际核电压力壳(RPV)大型筒体镦件反复镦扩工艺,在常温下用金属铅材料设计成缩小比例尺寸的筒体试件,使用实验室300kN万能材料试验机缓慢加压变形。模拟研究了大型筒体件反复镦扩工序的变形规律,定量绘出了模拟变形试件中等效应变EI等值线分布图,总结出反复镦扩变形分区的典型特征,研究了反复镦扩次数对工艺变形效果的影响。研究结果,对实际大型筒体件生产有重要参考价值。
Simulation technique for deformation theory research of repetitive enlarging and upsetting large tubular forgings has been investigated. Referring to an actual repetitive enlarging and upsetting process in manufacturing RPV, a reduced-size specimen has been slowly compressed by a 30t versatile material tester in laboratory at normal temperature. The equivalent-strain EI iso-graphs have been gained quantitatively for the process, and the typical strain area distribution feature in repetitive enlarging and upsetting process has been deduced. The result provides an important reference for a possible application in actual large tubular forgings manufacture.
出处
《锻压装备与制造技术》
2009年第3期73-76,共4页
China Metalforming Equipment & Manufacturing Technology
关键词
机械制造
镦扩
大型筒体件
试验模拟
Enlarging and upsetting
Large tubular forgings
Testing simulation
