摘要
为了提高打印砂型的制造精度,使其更好地应用于铸造行业,采用响应面法研究了工艺参数对3D打印砂型成形精度的影响规律。结果表明:打印砂型的成形精度误差在0.22~0.85mm,均为正向误差;型砂目数和树脂喷射量对成形精度有显著影响,且随着砂粒直径的减小,打印误差变小,随着树脂含量提高误差变大;固化剂含量对精度影响较小,其加入量提高会使砂型打印精度先变好后变差。提出基于中心偏置的砂型精度补偿算法对精度进行了控制,经控制后的砂型精度达到了±0.1 mm,满足工程使用要求。
In order to improve the manufacturing accuracy of printing sand mold, so that it is better used in the foundry industry. The influences of process parameters on the dimensional accuracy of 3D printing sand mold were studied by response surface method. The results showed that the forming accuracy error of the printing sand mold was 0.22-0.85 mm, which was a positive error. The mesh number of molding sand and the amount of resin injection had significant impact on the molding accuracy, and the error decreased with the increase of mesh number and increased with the increase of resin content. The content of curing agent had little effect on the accuracy, and the increase of its addition will make the forming accuracy better first and then worse. The sand mold accuracy compensation algorithm based on center offset was proposed to control the accuracy. The controlled sand mold accuracy reached ±0.1 mm, which met the engineering requirements.
作者
余洛生
刘丰
刘丽敏
梁昊天
李征
YU Luo-sheng;LIU Feng;LIU Li-min;LIANG Hao-tian;LI Zheng(China Academy of Machinery Science and Technology,State Key Laboratory of Advanced Forming Technology and Equipment,Beijing 100044,China;Beijing National Innovation Institute of Lightweight Ltd,Beijing 100044,China)
出处
《铸造》
CAS
北大核心
2022年第11期1407-1412,共6页
Foundry
基金
国家万人计划青年拔尖人才项目资助(W02070184)。
关键词
3D打印
砂型
精度
渗透
3D printing
sand mold
accuracy
penetration
