复杂内腔铝合金件液态模锻试验研究  

Experimental Study on Molten Metal Die Forging(MMDF)of Aluminum Alloy Parts with Complex Cavity

作　　者：石洪伟 陈烨煜 杨卫 谢德强 陈楚明 杨家洲 邢书明[2] SHI Hongwei;CHEN Yeyu;YANG Wei;XIE Deqiang;CHEN Chuming;YANG Jiazhou;XING Shuming(Guangzhou Hede Lightweight Molding Technology Co.,Ltd.,Guangzhou 511300,China;School of Mechanical and Electronic Control Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]广州和德轻量化成形技术有限公司,广州511300 [2]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《精密成形工程》2024年第7期224-232,共9页Journal of Netshape Forming Engineering

基　　金：广东省2024省级产业基础再造专项;增城区创新领军团队项目(202202001)。

摘　　要：目的为拓宽液态模锻技术的应用范围,实现具有复杂内腔结构件的高性能短流程成形制造,开展了使用砂芯的液态模锻技术试验研究。方法以具有复杂内腔的新能源汽车铝合金空气弹簧顶座为对象,利用广州和德装备制造公司生产的卧式液态模锻机,对比研究不同砂芯、涂料及液锻加压制度对黏砂缺陷的影响作用。结果普通砂芯在液锻中容易被压溃或产生黏砂缺陷;在苏铸砂芯的基础上自行配制HDSC01液锻砂芯,配合HDCoating03专用涂料,采用阶梯加压方法进行液态模锻,所得液锻件内表面光洁无黏砂、尺寸精确。结论液态模锻可以使用砂芯进行复杂内腔结构件的高性能精密成形,但工艺控制不当,容易出现黏砂缺陷。阶梯加压、使用专用砂芯和专用涂料是防止黏砂的有效途径。The work aims to conduct experimental research of Molten Metal Die Forging(MMDF)technology with sand cores to broaden the application range of MMDF technology and realize the high-performance short-process forming manufacturing of complex cavity structural parts.The air spring top seat of new energy vehicles with a complex inner cavity was selected as the object.The horizontal MMDF machine produced by Guangzhou Hede Equipment Manufacturing Co.,Ltd.was used to compare and study the effects of different sand cores,coatings and forging pressurization systems on sand sticking defects and sand inclusion defects.It was experimentally found that ordinary sand cores were easy to be crushed or have sand sticking defects in the process.When using the HDSC01 sand cores configured on the basis of the Su casting sand core together with the special coating of HDCoating01,and adopting the stepped pressurization method,the inner surface of the obtained MMDF parts was smooth and sand-free and the size was accurate.In conclusions,the MMDF process can be used for high-performance precision forming of complex cavity structural parts.However,if the process is not properly controlled,and sand sticking defects are prone to occur.Stepped pressurization and use of special sand cores and special coatings are effective ways to prevent sand sticking.

关 键 词：液态模锻 加压制度 砂芯 涂料 黏砂 

分 类 号：TG316.3[金属学及工艺—金属压力加工]