新聞資訊
內高壓成形制備6063鋁合金異形管件的壁厚分布及尺寸精度
發布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-09-28
為了實現鋁合金副車架在某型國產高檔轎車中的應用，對其副車架橫梁的內高壓成形過程進行實驗研究。測量管件內典型截面在壓彎、預成形以及內高壓成形工序中的環向壁厚分布，分析截面的壁厚分布規律；建立管件內典型截面尺寸的正態概率分布函數，得到截面各尺寸相對于設計值的最大偏差。
內高壓成形制備6063鋁合金異形管件的壁厚分布及尺寸精度Thickness distribution and size deviation of 6063 alloyirregular tubular parts prepared by hydroforming
為了實現鋁合金副車架在某型國產高檔轎車中的應用，對其副車架橫梁的內高壓成形過程進行實驗研究。測量管件內典型截面在壓彎、預成形以及內高壓成形工序中的環向壁厚分布，分析截面的壁厚分布規律；建立管件內典型截面尺寸的正態概率分布函數，得到截面各尺寸相對于設計值的最大偏差。結果表明：對于膨脹量為2.63%的異形截面A-A，最大減薄位置位于長直邊與左下圓角的過渡區，最大減薄率為15.6%；對于膨脹量為3.31% 的矩形截面B-B，最大減薄位置位于長直邊與右下圓角的過渡區，最大減薄率為15.8%。此外，截面A-A的最大尺寸偏差為0.19 mm，截面B-B的最大尺寸偏差為0.28 mm。兩個典型截面的壁厚分布及尺寸精度均滿足設計要求。
In order to realize the application of aluminum sub-frame in domestic car, experimental researches were conducted to investigate the hydroforming process of the sub-frame. The thickness distribution on typical section of tubular parts along the circle direction during the press bending, preforming, and hydroforming processes was separately measured, and the thickness distribution rule was mainly discussed. Then, the normal distribution function based on statistical analysis for the geometry size of various sections was carried out, and the maximum dimensional deviation compared with the designed requirement was obtained. The results show that, the maximum thinning rate of the irregular section A-A with a expansion rate of 2.63% is 15.6%, which is located at the transition region between the long straight side and left bottom corner, and the maximum dimensional deviation is 0.19 mm. The maximum thinning rate of rectangle section B-B with a expansion rate of 3.31% is 15.8%, which is located on the transition region between the long straight side and right bottom corner, and the maximum dimensional deviation is 0.28 mm. Both the thickness distribution and dimensional accuracy meet the design requirements.
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