摘要
对钛合金半环的超塑成形技术进行了工艺研究。采用正反胀形方法来控制成形后半环的壁厚,并通过数值模拟手段,对壁厚控制的关键即正反胀形模具型面进行了优化设计,同时进行了试验验证。结果表明数值模拟数据较好的预测了超塑成形后的半环壁厚分布,利用优化后的正反胀模具实现了半环试验件的壁厚均匀化。该方法能够明显提高材料利用率和后续车加工效率,并降低制造成本。
SPF process for titanium semi-annular part was researched.A direct-reverse SPF process was used for controlling the thickness of the semi-annular part after forming,and the SPF forming die as the key for the thickness control was designed and optimized by a numerical simulation method.Verification experiment was conducted for a TC4 semi-annular part.The result show that the actual thickness distribution of the part can be well predicted by the numerical simulation,and the thickness of the part is homogenized by the optimized SPF forming die.This process can improve material utilizing rate and efficiency of subsequent turning operation obviously,and reduce total manufacturing costs.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2017年第S1期139-144,共6页
Rare Metal Materials and Engineering
关键词
TC4
半环
正反胀形
TC4
semi-annular part
direct-reverse SPF
