摘要
目的研究成形速度、坯料晶粒尺寸以及振动加载,对5A06铝合金微槽道薄板件等温振动辅助成形效果的影响规律。方法改变坯料热处理参数、冲头运动模式等进行等温振动辅助成形实验,通过分析成形件梯形筋的充填率,研究了其成形效果。结果通过减小成形速度、降低晶粒尺寸、增加振动辅助加载,可以显著提高梯形筋的充填率,改善成形效果。结论等温振动辅助成形可以用于结构复杂、成形困难的微槽道薄板件的批量生产。合缝折弯,上模头压至最低点时工件开口接近42 mm,折弯回弹后开口尺寸在50~60 mm之间。
ABSTRACT:The purpose of this paper was to investigate the influences of forming velocity,billet grain size and vibration loading on the forming quality of 5A06 aluminum micro-channel thin-plate part vibration-assisted isothermal forming. The billet heat treatment parameters and punch moving modes were changed in the test of vibration-assisted isothermal forging. Through analyzing the filling rate of trapezoidal ribs to study the forming results. By decreasing forming velocity,reducing grain size and adding vibration-assisted loading,the filling rate of trapezoidal ribs can be significantly increased and the forming quality can be effectively improved. Vibration-assisted isothermal forging can be used for the mass production of micro-channel thin-plate parts which have complex structure and difficulties in forming.
出处
《精密成形工程》
2016年第3期25-29,共5页
Journal of Netshape Forming Engineering
基金
国家自然科学基金(51205143)
关键词
微槽道
薄板件
振动
等温成形
晶粒大小
micro channel
thin-plate part
vibration,isothermal forming
grain size
