Based on the experiments on milling the 3Cr-1Mo-1/4V(2.25Cr-1Mo-1/4V)steel which is the main part of the large chemical equipment hydrogenation reactor with several types of different grooves milling inserts, we have experiment study on the impact disrepair. Using the orthogonal experimental design method, we have cutting experiments on machining the high-strength steel with several types of different grooves milling inserts, and find out the difference of the impact disrepair invalidation types among them. Based on the plentiful and systemic impact disrepair experiments, we build the impact disrepair life cumulating distribution function mathematic model by the mathematics statistic method. We have contrast analysis of the impact disrepair average lives among these types of milling inserts, and the different grooves milling inserts are optimized. All these studies provide the theoretic and experimental bases for solving the cutter disrepair which is the key problem in the actual production and groove optimization.%采用几种适合加工高强度钢的不同槽型铣刀片,通过对大型化工设备热壁加氢反应器的主体件--筒节材料3Cr-1Mo-1/4V(2.25Cr-1Mo-1/4V)钢的面铣加工,进行铣刀片冲击破损的实验研究.首先,采用正交试验设计法,进行几种不同槽型铣刀片加工高强度钢试验,通过试验揭示不同铣刀片冲击破损失效形式的差异;其次,在大量、系统的冲击破损试验基础上,采用数理统计的方法建立冲击破损寿命累积分布函数数学模型;进行冲击破损平均寿命比较,从而对不同槽型铣刀片进行优选.研究成果为实际生产中刀具破损这一关键技术问题及槽型优选技术的研究打下理论与试验基础.
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