| 不锈钢薄壁零件选区激光熔化制造及影响因素研究 |
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| 引用本文： | 杨永强,罗子艺,苏旭彬,王迪. 不锈钢薄壁零件选区激光熔化制造及影响因素研究[J]. 中国激光, 2011, 0(1) |
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| 作者姓名： | 杨永强 罗子艺 苏旭彬 王迪 |
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| 作者单位： | 华南理工大学机械与汽车工程学院; |
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| 基金项目： | 2007粤港关键领域突破中标项目(广州市专项)(2007Z1-D6091); 2010年广东省教育部产学研结合重点项目(2010A090200072)资助课题 |
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| 摘 要： | 为了实现薄壁零件的快速制造,在快速成型设备Dimetal-280上进行了选区激光熔化(SLM)成型工艺实验研究,分析了SLM中不同激光功率、扫描速度、铺粉装置、离焦量和层厚对成型效果的影响,在实验中获得了优化的工艺参数,并成型了变截面的薄壁零件,零件致密度达96.95%。在扫描电镜下观察了零件的表面及侧面,结果表明其层与层之间熔合良好;分析表明成型设备成型零件壁厚的绝对误差极限值在20μm左右;薄壁零件顶部壁宽为101.3μm,底部壁宽为142.0μm,与设计值相差分别为21.3μm和22.0μm,与极限值相吻合;拉伸测试表明,抗拉强度范围为465~625 MPa,屈服强度范围为390~515 MPa,延伸率范围为23%~48%。
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| 关 键 词： | 激光技术 选区激光熔化 薄壁零件 不锈钢 |
Study on Process and Effective Factors of Stainless Steel Thin-Wall Parts Manufactured by Selective Laser Melting |
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| Yang Yongqiang Luo Ziyi Su Xubin Wang Di. Study on Process and Effective Factors of Stainless Steel Thin-Wall Parts Manufactured by Selective Laser Melting[J]. Chinese Journal of Lasers, 2011, 0(1) |
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| Authors: | Yang Yongqiang Luo Ziyi Su Xubin Wang Di |
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| Affiliation: | Yang Yongqiang Luo Ziyi Su Xubin Wang Di(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou,Guangdong 510640,China) |
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| Abstract: | For the rapid manufacturing of thin-wall parts,the process experiments of selective laser melting(SLM) have been carried out on Dimetal-280 system.The influence factors such as laser power,scanning speed,powder preparing setting,defocus length and powder layer thickness are experimented and analyzed,then a group of optimal process parameters have been gotten.In the experiment,a variable cross-section thin-wall part with density of 96.95% has been produced.The result shows that the metallurgical bonding laye... |
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| Keywords: | laser technique selective laser melting thin-wall parts stainless steel |
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