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Influence of loading paths on hydroforming process of stainless steel spherical part
Author(s): 
Pages: 641-644,648
Year: Issue:  5
Journal: Materials Science and Technology

Keyword:  GetLinkList(KeywordFilter('内高压成形球形件加载路径壁厚分布')'kw''CJFD');
Abstract: 为了研究加载路径对不锈钢球形件内高压成形过程的影响,采用实验方法分析了加载路径对成形过程中缺陷形式的影响,获得了80%膨胀率成形管件的壁厚分布规律.结果表明:当初始内压与屈服强度比值小于0.21时,管坯形成两个皱纹,在整形阶段发生开裂;当初始内压与屈服强度比值大于0.25时,管坯在轴向进给阶段即发生开裂.在初始内压与屈服强度比值为0.21~0.25时,可以成形出合格管件,合格管件最大减薄点位于球形件的最大截面处,最大减薄率为24.5%.本文所成形不锈钢球形件内高压成形区间,合理初始内压与屈服强度比值范围为0.21~0.25.
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