拉杆热收口工艺研究
Research on Hot Shell Nosing Process for Strut
郑贵全
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作者单位：沈阳飞机工业(集团)有限公司，辽宁 沈阳110034
中文关键字： 拉杆； 热收口； 铝合金2D12 T4
英文关键字：strut; hot shell nosing; aluminum alloy 2D12 T4
中文摘要：在对铝合金2D12 T4拉杆管材毛料进行热收口时，由于设备、工装、工艺参数等对收口质量影响很大，并且材料的变形系数很小，成形难度很高，所以可能出现铝管弯曲并产生凸棱，收缩区厚度不均、起皱等缺陷。针对常出现的缺陷，对该工艺过程作了研究，分析了缺陷产生的原因，并给出了解决措施。实践证明，这些措施对保证和提高拉杆热收口质量是有效的。
英文摘要：The equipment, process tools and process parameters have great influence on the quality of hot shell nosing parts, and the material deformation coefficient is so small that forming is very hard, so the bend and edge of Al strut, the uneven thickness and wrinkle in closing area and so on may occur during hot closing the aluminum alloy 2D12 T4 strut. Aiming at the defects, the hot shell nosing process was researched, the causes were analyzed, and some measures were given. Practice proves that the measures are effective to guarantee the quality of hot shell nosing parts.