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高真空压铸铝合金轿车底盘部件的压射工艺试验及优化
Experiment and Optimization of Shot Parameters of High Vacuum Die Casting for Aluminum Alloy Car Chassis Part
【作者】 林海; 万里; 张寓朝; 刘后尧; 吴湛方; 杨林方; 李高; 吴树森;
【Author】 Lin Hai1,Wan Li1,Zhang Yuchao2,Liu Houyao2,Wu Zhanfang2,Yang Linfang2,Li Gao2,Wu Shusen1 (1.State Key Laboratory of Materials Processing and Die & Mold Technology,Huazhong University of Science and Technology,Wuhan 430074,China;(2.Guangdong Hongtai Technology(holdings) Co.Ltd.Zhaoqing 526100,China)
【机构】 华中科技大学材料成形与模具技术国家重点实验室; 广东鸿泰科技股份有限公司;
【摘要】 本文采用自主研发的高真空压铸控制系统,以某铝合金轿车底盘部件为对象,研究了高真空压铸工艺参数如真空度、抽真空时间、压射速度及高速切换点等对铸件内部质量及力学性能的影响。试验结果表明:该铝合金轿车底盘关键部件的最佳高真空压铸工艺参数为,抽真空启动位置110㎜,抽真空停止位置700㎜;冲头慢压射速度0.19m/s,快压射速度5.8m/s;慢/快速转换点即高速切换点240㎜;型腔真空度91KPa以上。高真空压铸的底盘部件本体试样抗拉强度大于240MPa、屈服强度大于145MPa、伸长率大于6%。经过严格的产品检测,该铝合金轿车底盘部件已成功运用于某国产自主品牌轿车。
【Abstract】 Based on innovative high vacuum control system,effects of shot parameters including vacuum level,venting time,shot velocity and switch position of fast velocity on casting quality and mechanical properties was investigated for the high vacuum die-cast car chassis part in this paper.The results showed that the vacuumed startup and stop position are 110 ㎜ and 700 ㎜ respectively,and the vacuum level of cavity is up to 91 KPa.Meanwhile the slow and fast velocity of the injection punch are 0.19 and 5.8 m/s,and switch position of fast velocity is 240 ㎜.The round car chassis part can be achieved under above parameters,whose tensile strength is over 240 MPa,yield strength over 145 MPa and elongation up to 6%.The chassis part was successfully employed in a domestic own-brand cars.
【Key words】 high vacuum die casting; aluminum alloy; car chassis; shot parameters; mechanical property;
- 【会议录名称】 2010年中国铸造活动周论文集
- 【会议名称】2010年中国铸造活动周
- 【会议时间】2010-10-16
- 【会议地点】中国浙江杭州
- 【分类号】TG249.2;U463.1
- 【主办单位】中国机械工程学会铸造分会