摘要
应用三维有限元模拟软件Deform对7075铝合金转向节成形过程进行了数值仿真与工艺分析。通过模拟研究,确定该转向节的成形方案为:二道次辊锻制坯加一步终锻成形。在辊锻制坯时,将原始圆坯优化为方坯显著地提高该过程的稳定性,进而改善了辊锻制坯件的质量。针对转向节较难成形部位,将辊锻以及终锻模膛结构作适当修改。改进后,所得终锻件各部位充填饱满、飞边分布均匀并且无明显折迭缺陷。实际生产表明,采用优化后的工艺成形的铝合金转向节质量良好,符合产品的使用要求。
The numerical simulation and process analysis were used to investigate the forming process for 7075 aluminum steering knuckle based on FE software Deform.The final forging process was determined as two passes roll forging and one step finish forging process.The initial round billet was optimized as the cube shape to increase the stability of the roll forging process and make the further improvement of the roll forging billet＇s quality.The structures in the roll forging die cavity and finish forging die were adjusted to solve the main forming defects,and then the simulation was conducted.The results shows that the forging part has better filling die,even flash and has not fold defect.The practical production indicates that 7075 aluminum steering knuckle can get excellent forming quality and meet the appliance requirement.
出处
《热加工工艺》
CSCD
北大核心
2010年第23期117-119,123,共4页
Hot Working Technology
