盘形件局部加热旋压增厚过程设计
发布时间：2018-08-05 18:29
【摘要】：针对薄辐板厚轮缘盘形件提出一种局部加热旋压增厚成形方法。通过数学建模,得到了变形前沿即加热热源位置随时间变化的规律并给出了相应的加热功率,计算结果表明,在增厚过程中火焰喷枪近似匀速向圆板中心推进,在历经不同温度分区时,需要施以不同功率才能使变形前沿温度达到目标温度。以半径191 mm、厚度2.5 mm的圆形板料为例进行工艺实验,实验中,旋轮沿径向向内进给压缩轮缘的同时,火焰随着变形区前沿的变化而向内移动。实验结果表明,局部加热能使工件心部支撑材料保持足够的刚度抵抗失稳的产生,单道次增厚比可以达到2以上,与冷旋相比,能显著提高增厚效率。
[Abstract]:A local heating spinning thickening forming method for thick wheel flange of thin spoke plate is presented. Through mathematical modeling, the variation of the position of the heat source in the deformation front with time is obtained, and the corresponding heating power is given. The calculation results show that the flame spray gun moves approximately to the center of the circular plate in the process of thickening. In order to reach the target temperature, it is necessary to apply different power to the deformation front temperature when it goes through different temperature zones. Taking the circular plate with a radius of 191 mm and a thickness of 2.5 mm as an example, the flame moves inward with the change of the front of the deformation zone while the rotating wheel moves along the inner edge of the radial feed. The experimental results show that the local heating can keep enough stiffness to resist instability and the thickening ratio can reach more than 2. Compared with the cold rotation, the thickening efficiency can be improved significantly.
【作者单位】： 华中科技大学材料成形与模具技术国家重点试验室;
【基金】：国家自然科学基金资助项目(51205144)
【分类号】：TG306
本文编号：2166629
[Abstract]:A local heating spinning thickening forming method for thick wheel flange of thin spoke plate is presented. Through mathematical modeling, the variation of the position of the heat source in the deformation front with time is obtained, and the corresponding heating power is given. The calculation results show that the flame spray gun moves approximately to the center of the circular plate in the process of thickening. In order to reach the target temperature, it is necessary to apply different power to the deformation front temperature when it goes through different temperature zones. Taking the circular plate with a radius of 191 mm and a thickness of 2.5 mm as an example, the flame moves inward with the change of the front of the deformation zone while the rotating wheel moves along the inner edge of the radial feed. The experimental results show that the local heating can keep enough stiffness to resist instability and the thickening ratio can reach more than 2. Compared with the cold rotation, the thickening efficiency can be improved significantly.
【作者单位】： 华中科技大学材料成形与模具技术国家重点试验室;
【基金】：国家自然科学基金资助项目(51205144)
【分类号】：TG306
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1 杨亚文;钨板加热旋压模具设计及加热方法研究[J];沈阳航空工业学院学报;2003年04期
，本文编号：2166629
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