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以DC53模具钢为研究对象,首先通过硬度测试、冲击试验优选其最佳热处理工艺,之后以精雕机为平台进行切削试验,对比研究了进给速度与吃刀深度、路径间距不同工艺组合切削时断刀的频率。研究结果表明,DC53经过预调质处理后淬火再400℃回火20min的热处理工艺最适合精密冷锻模具强韧性配比的要求,其理想的切削工艺为路径间距0.01mm、吃刀深度0.01mm、进给速度1.8m.min-1,该工艺在保证一定加工效率的基础上有效避免了频繁断刀的发生。
Taking DC53 die steel as the research object, the best heat treatment technology was selected through hardness test and impact test. Then the cutting test was carried out on the carving machine platform. The cutting speed was compared with the cutting depth, When the frequency of broken knife. The results show that the heat treatment process of DC53 after pre-quenching and then tempering at 400 ℃ for 20min is the most suitable for the toughness and toughness ratio of precision cold forging die. The ideal cutting process is the path spacing of 0.01mm, the depth of eating knife 0.01mm , Feed rate of 1.8m.min-1, the process to ensure a certain processing efficiency based on the effective avoid frequent knife breakage occurred.