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采用多向精锻工艺生产机匣体锻件可显著提高材料利用率和生产效率,但由于机匣体形状复杂且7A04超硬铝合金塑性差、应变速率敏感性强,在锻造成形过程中容易出现充不满和折叠现象。通过塑性成形理论分析、热力耦合有限元模拟和实验研究相结合的方法,总结了材料的变形行为和成形规律,提出了坯料形状和预锻工艺的优化方法,解决了生产中出现的问题,得到了合格的锻件,并实现了产业化。
The use of multi-directional precision forging process for producing box body forgings can significantly improve material utilization and production efficiency. However, due to the complex shape of the box body and the poor plasticity and strain rate sensitivity of 7A04 super-hard aluminum alloy, it is prone to appear during the forging process Filled dissatisfaction and folding phenomenon. Through plastic forming theory analysis, thermal coupled finite element simulation and experimental research methods, the deformation behavior and forming rules of the material are summarized, and the optimization methods of the shape of the billet and the pre-forging process are put forward to solve the problems in the production. The qualified forgings, and to achieve the industrialization.