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摘要：
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在开发某瞄镜时,为了避免由于质量大而引起的振动失效现象,经充分论证后最终选用了MB2镁合金锻造毛坯,为此进行了MB2镁合金锻造工艺研究。在研究过程中,运用正交试验方法,将炉膛保温时间、锻床夹板温度、锻打时间等3个主要因素设计成3个水平,共进行了9次试验,并在低倍显微镜下对锻造毛坯进行了流线检查。结果表明,保持锻造时的毛坯温度是保证锻造质量的关键,可通过减少锻打时间、提高锻锤夹板温度等措施来实现。经后续的系列优化试验,最终得到了MB2镁合金在普通锻造设备上的最佳工艺参数,对MB2镁合金的锻造生产具有一定的指导意义。
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Magnesium alloy is an ideal structural metal material with many excellent characteristics.In order to avoid the vibration failure caused by large mass when developing a kind of sighting telescope,MB2 Magnesium alloy is finally decided as the billet material to be forged after fully evaluating.Therefore,researching on the technique of forging MB2 Magnesium alloy is carried out.The perpendicular experiment method is used in this research.Each of the main three factors such as,holding time of furnace temperature,forging machine clamp temperature and forging time are designed to three levels and so nine experiments are carried out.Forging flow line of the billet is observed with the low powered microscope.It demonstrates that holding the billet forging temperature is the key to forging quality,which can be achieved by many means such as,shortening the forging time,increasing the clamp temperature and so on.The optimal processing parameters of MB2 Magnesium alloy forged on the general forging machine are determined after a series of subsequent optimizing experiment.
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作者简介：
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参考文献：
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[1]Ogawa N,Shiomi M,Osakada K.Forming limit of magnesiumalloy at elevated temperature for precision forging[J].Inter-national Journal of Machine Tools and Manufacture,2002,42(5):607 614.
[2]张士宏,许沂,王忠堂,等.镁合金成形加工技术[J].世界科技研究与发展,2001,23(6):18 21.
[3]夏巨谌主编,中国机械工程学会,中国模具设计大典编写组.中国模具设计大典:第4卷[M].南昌:江西科学出版社,2003.
[4]工程材料实用手册编辑委员会.工程材料实用手册(第3册):铝合金镁合金钛合金[M].北京:中国标准出版社,1989.
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