AZ31镁合金盒形件变压边力温热拉延工艺  

Warm Deep Drawing of Square Parts of AZ31 Magnesium Alloy Sheet Adopting Variable Blank Holder Force

作　　者：苌群峰[1] 李大永[1] 彭颖红[1] 曾小勤[1] 

机构地区：[1]上海交通大学,上海200030

出　　处：《中国机械工程》2006年第S1期16-18,共3页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50405014);上海市重点基础研究项目(03JC1405)

摘　　要：通过温热交叉轧制工艺制备了板形以及成形性能良好的AZ31镁合金薄板;开发了可加热的变压边力双动液压机,并详述其工作原理;采用不同的压边力方案,对盒形件进行温热拉延实验,分析了变压边力对AZ31镁合金板材温热拉延性能的影响。结果表明:最佳的压边力变化方案是压边力随凸模行程先增后减的模式;采用变压边力技术可以将AZ31镁合金盒形件的拉深深度提高13·2%。AZ31 magnesium alloy sheet with good shape and formability is fabricated by warm cross rolling. A double-action hydraulic press that can realize adjustable blank holder forces is developed and its working principle and control system are introduced. Some warm deep drawing experiments of square parts of AZ31 magnesium alloy sheet are also performed. Different variation schemes of the blank holder force with the stroke of the punch are tested, and the experiment results are compared. The effect of variable bl...

关 键 词：AZ31镁合金盒形件 温热拉延 交叉轧制 双动液压机 变压边力 

分 类 号：TG386.3[金属学及工艺—金属压力加工]