尾翼架模锻成形工艺优化分析  

Optimization of Die Forging Forming Process of Tail

作　　者：王珊 郭为民 贺锐 兰志强 

机构地区：[1]晋西工业集团有限责任公司,太原030027

出　　处：《精密成形工程》2017年第4期64-68,共5页Journal of Netshape Forming Engineering

摘　　要：目的对尾翼架生产试验过程中出现的问题进行总结分析,确定最优工艺。方法试验所用材料为2A12硬铝合金,使用VPA1250模锻压力机成形,成形过程中,铝合金料温为430℃,成形速度为15 mm/s,使用水基石墨和石墨煤油2种润滑剂进行对比。结果产品试制过程中发现,尾翼架底部未能完全填充,对顶板进行改造后改善。工件成形中偏心倾斜导致壁厚超差,模垫淬火后,壁厚差超差情况有所改善。结论对于薄壁零件,壁厚尺寸较难控制,影响壁厚差的主要因素包括模具同轴度、压力机精度、坯料质量、润滑等方面。可从金属流动的角度进一步分析工件壁厚差过大的影响因素。The paper aims to confirm the optimum process by summarizing and analyzing problems in trial production. Testing material 2A 12Aluminum Alloy was extruded by VPA1250 die forging press. The material temperature in shaping was 430 ℃ and the forming speed was 15 mm/s. Water-based graphite and graphite kerosene were compared. The tail bottom was not fully filled in the trail production. It was better after the roof panel was reconstructed. Eccentricity and incline in forming caused excessive wall thickness difference. The problem was solved by quenching the die cushion. The wall thickness of thin-walled parts is hard to be controlled, Main influencing factors of wall thickness include： coaxiality of die, precision of press quality of blank, lubrication, etc. Influencing factors of excessive wall thickness difference of workpiece might be analyzed further from the aspect of metal flow.

关 键 词：铝合金 尾翼架 模锻 壁厚差 金属流动 

分 类 号：TG386.1[金属学及工艺—金属压力加工]