| 冷冻砂型高精高效制备过程研究 |
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| 引用本文： | 杨浩秦,单忠德,刘丰,王怡飞.冷冻砂型高精高效制备过程研究[J].中国机械工程,2021,32(10):1254-1259. |
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| 作者姓名： | 杨浩秦 单忠德 刘丰 王怡飞 |
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| 作者单位： | 1.南京航空航天大学材料科学与技术学院，南京，210016
2.机械科学研究总院集团有限公司，北京，100044
3.先进成形技术与装备国家重点实验室，北京，100083 |
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| 基金项目： | 国家杰出青年科学基金（51525503） |
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| 摘 要： | 对采用数字化无模铸造精密成形技术制备铸造用冷冻砂型的高精高效成形过程进行了研究，基于砂型尺寸精度控制和局部瞬态热场分析对冷冻砂型的切削加工参数进行联合约束，优化得到适于冷冻砂型加工制造过程的工艺参数，在切削刀具进给速度100 mm/s、主轴转速4000 r/min、切削深度4 mm、切削宽度12.8 mm条件下，通过数字化无模成形技术制备出的冷冻砂型尺寸精度较高，冷冻砂型切削区域局部瞬态温度较低，该切削参数适用于冷冻砂型的长时稳定低温制备加工过程，可实现冷冻砂型的高精高效制造。
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| 关 键 词： | 无模成形 绿色铸造 瞬态温度 低温制备 |
Study on High Precision and High Efficiency Preparation Processes of Frozen Sand Molds#br# |
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| YANG Haoqin,SHAN Zhongde,LIU Feng,WANG Yifei.Study on High Precision and High Efficiency Preparation Processes of Frozen Sand Molds#br#[J].China Mechanical Engineering,2021,32(10):1254-1259. |
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| Authors: | YANG Haoqin SHAN Zhongde LIU Feng WANG Yifei |
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| Affiliation: | 1.College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics，Nanjing,210016
2.China Academy of Machinery Science and Technology Group Co.，Ltd.,Beijing,100044
3.State Key Laboratory of Advanced Forming Technology and Equipment,Beijing,100083 |
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| Abstract: | The high-precision and high-efficiency forming processes of frozen sand molds for casting were studied by using digital patternless casting precision forming technology herein. Based on the dimensional precision control and the analysis of local transient thermal field of the sand molds, the cutting parameters of frozen sand molds were jointly constrained, and the cutting parameters suitable for the processing and manufacturing processes of frozen sand molds were optimized. When the feed speed of cutting tool was as 100 mm/s, the spindle speed was as 4000 r/min, the depth of cut was as 4 mm and the cutting width was as 12.8 mm, the frozen sand molds prepared by digital patternless forming technology have higher dimensional accuracy and lower local transient temperature field in the cutting area of frozen sand molds. The cutting parameters are suitable for the long-term stable and low-temperature preparation processes of frozen sand molds, which may realize high-precision and high-efficient manufacturing of frozen sand molds. |
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| Keywords: | patternless forming green casting transient temperature low temperature preparation |
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