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激光增减材交互中基体温度状态对表面质量影响研究
Alternative TitleThe Effect of Additive Manufacturing and Subtractive Manufacturing Interactive Matrix Temperature State on Surface Quality
高孟秋1,2,3,4; 赵宇辉1,2,3; 赵吉宾1,2,3; 王志国1,2,3; 王志永1,2,3,5; 孙力博1,2,3,6
Department工艺装备与智能机器人研究室
Source Publication中国激光
ISSN0258-7025
2020
Volume47Issue:8Pages:1-9
Indexed ByCSCD
CSCD IDCSCD:6792777
Contribution Rank1
Funding Organization国家重点研发计划(2017YFB1104003) ; 国家自然科学基金(51805526)
Keyword激光技术 增减材复合制造 温度状态 表面质量 316L不锈钢
Abstract

为了研究增减材交互过程中基体温度状态对工件表面质量的影响,对增材工件在冷却不同的时间后进行铣削,测试工件表面的粗糙度、表面形貌、残余应力、微观组织及硬度。当基体温度在482℃进行铣削时,工件表面的粗糙度约在Ra2.226μm左右,表面有凹坑及凸起的缺陷,工件表面呈现残余拉应力,沉积层顶部硬度约为200HV;当基体温度在205℃及164℃进行铣削时,工件表面的粗糙度分别降低到Ra1.192μm和Ra0.844μm,表面形貌均由均匀的铣削纹理组成,工件表面由残余拉应力转化为残余压应力,沉积层顶部硬度分别为309HV和286HV。结果表明:随着基体温度的降低,工件表面粗糙度逐渐降低,表面缺陷减少,表面残余应力由残余拉应力转化为残余压应力,硬度增加,工件表面质量获得提高。

Other Abstract

The effect of matrix temperature state on the surface quality of workpieces during the interaction between Additive Manufacturing and Subtractive Manufacturing was studied. Additive workpieces were milled after different cooling times. In this study, the roughness, surface morphology, residual stress, microstructure and hardness of workpieces were tested. When the matrix temperature is milling at 482 °C, the roughness of the workpiece surface is about Ra2.226μm, the surface has the defects of pits and protrusions, surface of the workpiece is residual tensile stress, and the hardness of the top layer of the workpiece is about 200 HV; When the matrix temperature is milling at 205℃ and 164℃, the roughness of the workpiece surface is reduced to Ra1.192μm and Ra0.844μm, respectively. The surface morphology is composed of uniform milling texture. The residual tensile stress is converted to residual compressive stress on the surface of the workpiece. The hardness of the top layer of the workpiece is 309HV and 286HV, respectively. The results show that as the cooling time increases, the surface roughness of the workpiece gradually decreases, Surface defects on the workpiece surface are reduced, the surface residual stress is converted from residual tensile stress to residual compressive stress, and the hardness and the milling quality of the workpiece are improved.

Language中文
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/26850
Collection工艺装备与智能机器人研究室
Corresponding Author赵吉宾
Affiliation1.中国科学院网络化控制系统重点实验室
2.中国科学院沈阳自动化研究所
3.中国科学院机器人与智能制造创新研究院
4.中国科学院大学
5.东北大学机械工程与自动化学院
6.沈阳工业大学材料科学与工程学院
Recommended Citation
GB/T 7714
高孟秋,赵宇辉,赵吉宾,等. 激光增减材交互中基体温度状态对表面质量影响研究[J]. 中国激光,2020,47(8):1-9.
APA 高孟秋,赵宇辉,赵吉宾,王志国,王志永,&孙力博.(2020).激光增减材交互中基体温度状态对表面质量影响研究.中国激光,47(8),1-9.
MLA 高孟秋,et al."激光增减材交互中基体温度状态对表面质量影响研究".中国激光 47.8(2020):1-9.
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