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振動(dòng)時(shí)效|百科

振動(dòng)時(shí)效|百科,振動(dòng)時(shí)效是通過(guò)共振原理消除金屬應力的技術(shù),是通過(guò)給工件施加周期性的動(dòng)應力,周期性動(dòng)應力與

工件內部的殘余應力相疊加,當大于工件的曲服極限時(shí),工件內部會(huì )產(chǎn)生微觀(guān)的塑性應力釋放,從而消除及均化部分殘余內應力

,從而達到穩定工件尺寸精度的目的。振動(dòng)時(shí)效處理不改變我件的金相組織,不改變材料的硬度,只消除工件殘余應力,時(shí)效周期

短,時(shí)效郊果好,被廣泛運用于金屬構件的應力消除。

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