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振动时效技术的优越性
金属结构件和机械零部件在煅、铸、焊、切削、淬火等加工过程中，其组织内部均会产生一定的残余应力。由于残余应力的存在可使工件的尺寸及形位精度受到破坏，疲劳强度降低，产生应力腐蚀，甚至足以使工件本身产生裂纹而破坏。因此，消除、降低或均化内应力是机械制造业中一项十分重要的任务。
长期以来，人们采用热时效的方法来消除或降低残余应力。然而，这一方法存在着生产效率低、周期长、炉窑设备投资大，能耗高以及经过退火使工件强度降低，表面产生氧化皮、脱炭、热变形等问题。特别是对一些特大构件（为水轮机的蜗壳、引水压力钢管的叉管、大型减速箱体、大尺寸齿圈及焊接圈筒、长行程油缸缸筒等）的热时效处理 （未完，全文请 查看更多 ）
金属结构件和机械零部件在煅、铸、焊、切削、淬火等加工过程中，其组织内部均会产生一定的残余应力。由于残余应力的存在可使工件的尺寸及形位精度受到破坏，疲劳强度降低，产生应力腐蚀，甚至足以使工件本身产生裂纹而破坏。因此，消除、降低或均化内应力是机械制造业中一项十分重要的任务。
长期以来，人们采用热时效的方法来消除或降低残余应力。然而，这一方法存在着生产效率低、周期长、炉窑设备投资大，能耗高以及经过退火使工件强度降低，表面产生氧化皮、脱炭、热变形等问题。特别是对一些特大构件（为水轮机的蜗壳、引水压力钢管的叉管、大型减速箱体、大尺寸齿圈及焊接圈筒、长行程油缸缸筒等）的热时效处理 （未完，全文请 查看更多 ）
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