气冷搅拌棒流变压铸在高强高导铝合金中的应用  

Application of ACSR in Aluminum Alloys with High Thermal Conductivity and Strength

作　　者：祁明凡 朱国明[1] 康永林[1] 王继成 张莹 李谷南 张光金 Qi Mingfan;Zhu Guoming;Kang Yonglin;Wang Jicheng;Zhang Ying;Li Gunan;Zhang Guangjin(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083;Zhuhai Runxingtai Electric Appliance Co.,Ltd.,Zhuhai 519099;Shandong Detai Machinery Group Co.,Ltd.,Qingdao 266599)

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]珠海市润星泰电器有限公司,珠海519099 [3]山东德泰机械制造集团有限公司,青岛266599

出　　处：《特种铸造及有色合金》2024年第3期289-293,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(52005034);中国博士后科学基金第15批特别资助(站中)项目(2022T150376);中国博士后科学基金资助项目(2021M691860);泰安市科技创新重大专项资助项目(2021ZDZX011);珠海市产学研合作项目(ZH22017001200176PWC);北京市博士后科研活动经费资助项目(2021-ZZ-073);中央高校基本科研业务费专项资金资助项目(FRF-MP-20-24Z)。

摘　　要：开发了一种高效、低成本的铝合金均匀凝固控制制备大体积半固态浆料工艺——气冷搅拌棒工艺(Air-cooled stirring rod process,ACSR),将该制浆工艺与压铸机衔接形成多条一体化智能流变压铸生产线进行铝合金大型薄壁件流变压铸高效制备。目前,ACSR工艺可实现在30 s内制备出40 kg固相率为25%~35%的大体积半固态浆料。该流变压铸工艺已在新能源汽车、5G通信等高品质铝合金大型薄壁件的制备领域得到产业化应用,制备的典型产品包括5G通信用散热壳体、滤波器壳体、天线机箱与新能源汽车用三电结构壳体、端盖、ABS系统阀体等。与传统压铸件相比,新工艺制备的铝合金铸件显微组织细小圆整、表面品质好、内部气孔少,且具有更为优异的力学性能和导热系数。An efficient and low-cost uniform solidification control process of aluminum alloy was developed for the preparation of large-volume semisolid slurry,which is called air-cooled stirring rod(ACSR)process.The slurrying process was related to die-casting machines to form integrated and intelligent rheological die-casting production lines for high-efficiency rheo-diecasting of large-scale and thin-walled aluminum alloy parts.Nowadays,40 kg semisolid slurry with a solid fraction of 25%~35%within 30 s was achieved by ACSR process,which achieved industrial application in the formation of large and thin-walled aluminum alloy parts with high quality,such as new energy vehicles and 5G communications.Typical products cover cooling shell for 5G communication,filter shell,antenna case,three-electric structure shell for new energy vehicles,end cover,ABS system valve body,etc.Compared with the traditional die castings,components manufactured by the new process possesses fine and spherical microstructure,satisfied surface quality,less internal pores,as well as desirable mechanical properties and thermal conductivity.

关 键 词：铝合金 均匀凝固控制 半固态浆料 流变压铸 

分 类 号：TG249.2[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]