汽车中间轴锻造工艺的优化  

Optimization of Forging Process for Automotive Middle Shaft

作　　者：黄亮[1] 周杰[1] 杨海[1] 卢先正[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《热加工工艺》2012年第5期102-104,共3页Hot Working Technology

摘　　要：传统的汽车中间轴锻造工艺为:自由锻制坯-成形镦粗-预锻-终锻-切边,该工艺对工人操作要求较高,生产效率低。改进的工艺为:成形镦粗-两道次滚挤-终锻-切边。该工艺能降低模具成本和工人的操作难度,提高生产效率。运用数值模拟仿真软件对改进的工艺进行全工序模拟,系统地研究了滚挤模具下压间隙量和坯料规格对锻件填充性能的影响,模拟发现:下压间隙量为6mm时锻件的填充性能最好,飞边少且均匀。最优的坯料规格为准64mm×258mm。实际生产表明:改进的工艺避免了因人工操作产生的不合格件,提高了锻件质量的稳定性。The traditional forging process of automotive middle shaft is： Free Forging-forming upsetting-pre-forging-finish forging-trimming,whose operation is difficult for workers,and low efficiency.Improved process is： forming upsetting-twice squeeze roll-finish forging-Trimming.The process can reduce the die cost and difficulty of the operation,while improving production efficiency.By using numerical simulation software,the whole process of the improved process was simulated,and the filling properties influenced by the squeeze roll die stroke and blank size were systematically studied.The results show that： when the pressing clearance distance is 6mm,the filling properties best;the flash is well distributed and less.The optimal blank size is φ64mm×258mm.The actual production indicates that： the improved process avoids forgings blow the standard and increases the stability of forging quality.

关 键 词：中间轴 工艺改进 数值模拟 填充性能 

分 类 号：TG316.2[金属学及工艺—金属压力加工]