基于SLM技术的随形水路镶块的制备及其在OBC壳体铸件的应用研究  

Preparation of Conformal Waterway Inserts Based on SLM Technology and Its Application in OBC Shell Castings

作　　者：王宪宇 吴涵超 刘立君[2] 贾志欣[2] 李继强[2] WANG Xian-yu;WU Han-Chao;LIU Li-jun;JIA Zhi-xin;LI Ji-qiang(Zhejiang Sci-Tech University,Hangzhou 311121,Zhejiang,China;Ningbo Tech University,Ningbo 315100,Zhejiang,China)

机构地区：[1]浙江理工大学,浙江杭州311121 [2]浙大宁波理工学院,浙江宁波315100

出　　处：《铸造》2025年第2期158-165,共8页Foundry

基　　金：宁波市北仑区关键核心技术攻关项目(2021BLG003);宁波创新联合体项目(2022H001);宁波市科技创新2025重大专项(2023Z037)。

摘　　要：针对新能源汽车车载充电器(OBC)的冷隔缺陷进行了分析,发现螺孔处成形时模具温度过低,导致金属液流动受阻是形成缺陷的主要原因。通过选择性激光熔化(SLM)制备随形水路镶块并对其进行拉伸、冲击、电化学腐蚀等性能测试及质量效果验证,对缺陷部位进行随形加热,来降低此处缺陷。最终对实际生产出的试样品进行X射线探伤观察。结果表明,镶块随形水路的加热有效,可基本消除冷隔缺陷。An analysis was conducted on the cold shut defects of the on-board charger(OBC)for new energy vehicles,and it was found that the main reason for the defects was the low mold temperature during the formation of the screw hole,which hindered the flow of molten metal.By using selective laser melting(SLM)to prepare conformal waterway inserts and conducting performance tests such as tensile,impact,and electrochemical corrosion,as well as quality effect verification,the defect area was heated in a conformal manner to reduce the defect.Finally,X-ray inspection was conducted on the actual produced samples,and the results showed that the heating of the embedded block along the water path was effective and can basically eliminate cold shut defects.

关 键 词：车载充电器壳体 随形水路镶块 3D打印 冷隔缺陷 

分 类 号：TG241[金属学及工艺—铸造]