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Zilin HUANG,Gang WANG,Shaopeng WEI,Changhong LI,Yiming RONG
《机械工程前沿(英文)》 2016年 第11卷 第3期 页码 242-249 doi: 10.1007/s11465-016-0397-7
Laser hot wire cladding, with the prominent features of low heat input, high energy efficiency, and high precision, is widely used for remanufacturing metal parts. The cladding process, however, needs to be improved by using a quantitative method. In this work, volumetric defect ratio was proposed as the criterion to describe the integrity of forming quality for cladding layers. Laser deposition experiments with FV520B, one of martensitic stainless steels, were designed by using the Taguchi method. Four process variables, namely, laser power (P), scanning speed (Vs), wire feed rate (Vf), and wire current (I), were optimized based on the analysis of signal-to-noise (S/N) ratio. Metallurgic observation of cladding layer was conducted to compare the forming quality and to validate the analysis method. A stable and continuous process with the optimum parameter combination produced uniform microstructure with minimal defects and cracks, which resulted in a good metallurgical bonding interface.
关键词: process optimization Taguchi method signal-to-noise (S/N) ratio volumetric defect ratio laser hot wire cladding
Hybrid forming mechanism of patternless casting and laser cladding
Zhongde SHAN, Fuzhen SUN, Yang LIU
《机械工程前沿(英文)》 2019年 第14卷 第4期 页码 393-401 doi: 10.1007/s11465-019-0550-1
关键词: patternless casting laser cladding hybrid forming rapid tooling
张群莉,王梁,梅雪松,姚建华
《中国工程科学》 2020年 第22卷 第3期 页码 71-77 doi: 10.15302/J-SSCAE-2020.03.010
激光表面改性技术利用高能量密度的激光束对零部件局部易损易耗区域进行快速处理,获得材料表面所需性能,进而大幅延长零部件使用寿命,已在航空航天、石油化工、能源、交通、冶金等领域获得应用。本文针对激光冲击强化、激光淬火、激光熔覆3 种典型的激光表面改性技术,梳理了相应技术特点及国内外应用现状,凝练我国相关技术领域面临的差距与问题,总结激光表面改性技术的重点发展方向:专用合金材料制备、多能场激光复合表面改性、面向现场的激光再制造、激光冲击强化控形控性、激光表面改性智能化、激光表面微结构化。从政府引导、国产化创新、产业链完善、质量评价标准体系、人才培养等方面提出发展建议,以期为我国激光表面改性技术发展提供参考借鉴。
The Application and the Prospect of Remanufacturing Technologies in the Metallurgical Industry
Jie Xiong,Jian-cheng Fan,Jv Yuan
《工程管理前沿(英文)》 2016年 第3卷 第2期 页码 165-170 doi: 10.15302/J-FEM-2016023
关键词: remanufacturing technology electroplating overlaying welding thermal spraying laser surface cladding
陈庆华,魏仑,龙晋明,李俊昌
《中国工程科学》 2001年 第3卷 第10期 页码 64-71
运用激光熔覆技术在40Cr钢表面制备了(TiO2+B2O3+Al2O3+TiB2)/NiCrAl金属陶瓷涂层,其中的TiB2和Al2O3陶瓷颗粒在激光加工过程中原位反应生成;对熔覆层的组织、物相、元素分布和显微硬度分布特征进行了分析研究;熔覆层中的主相依次分别是γ-Ni,γ′,Al2O3和TiB2,熔覆层的微观结构和硬度主要和激光处理参数和熔覆层化学组成有关[1~9];陶瓷相的原位生成和加入,大大改善了熔覆层的硬度和覆层/基体界面的结合性能。
Lianzhong ZHANG, Dichen LI, Shenping YAN, Ruidong XIE, Hongliang QU
《机械工程前沿(英文)》 2018年 第13卷 第4期 页码 513-519 doi: 10.1007/s11465-018-0503-0
The mechanical properties of 316L stainless steel repaired with Fe314 under different temperatures and humidities without inert gas protection were studied. Results indicated favorable compatibility between Fe314 and 316L stainless steel. The average yield strength, tensile strength, and sectional contraction percentage were higher in repaired samples than in 316L stainless steel, whereas the elongation rate was slightly lower. The different conditions of humiture environment on the repair sample exerted minimal influence on tensile and yield strengths. The Fe314 cladding layer was mainly composed of equiaxed grains and mixed with randomly oriented columnar crystal and tiny pores or impurities in the tissue. Results indicated that the hardness value of Fe314 cladding layer under different humiture environments ranged within 419–451.1 HV0.2. The field humiture environment also showed minimal impact on the average hardness of Fe314 cladding layers. Furthermore, 316L stainless steel can be repaired through laser cladding by using Fe314 powder without inert gas protection under different temperatures and humidity environments.
关键词: laser cladding repaired performance tensile strength temperature and humidity environment
《化学科学与工程前沿(英文)》 2023年 第17卷 第12期 页码 2050-2060 doi: 10.1007/s11705-023-2343-7
关键词: LiMn2O4 lithium extraction surface coating cyclic stability Mn dissolution
Steady-state thermal-hydraulic analysis of SCWR assembly
LIU Xiaojing, CHENG Xu
《能源前沿(英文)》 2008年 第2卷 第4期 页码 475-478 doi: 10.1007/s11708-008-0093-3
关键词: cladding temperature assembly temperature coolant resistance
陈俐,巩水利,何恩光
《中国工程科学》 2020年 第22卷 第3期 页码 78-84 doi: 10.15302/J-SSCAE-2020.03.012
随着激光技术的发展,激光去除与连接技术深刻影响着制造业技术的发展,并以柔性、高效、高质的综合优势成为不可或缺的先进制造技术。在先进制造智能化发展的时代,激光技术、数字信息技术等的融合必将推动激光去除与连接技术的应用发展与创新。本文选取工业应用最广的激光焊接、激光切割、激光打孔、激光打标4 种激光去除与连接技术,概述了激光去除与连接技术的应用现状,分析了其在支撑先进制造发展过程中存在的问题。研究表明,激光去除与连接技术的发展应注重工艺基础和装备研究一体化的研究,解决激光加工单元部件、激光加工工艺、智能集成各环节的关键技术,强化工艺基础研究平台建设,关注技术创新和人才培养的多维度结合,以促进激光去除与连接技术从工艺应用开发到装备市场保障的生态链式的协同发展。
Temperature field simulation of laser homogenizing equipment
Juanjuan WANG, Yunshan WANG, Fudong ZHU
《机械工程前沿(英文)》 2009年 第4卷 第1期 页码 49-52 doi: 10.1007/s11465-009-0005-1
关键词: laser homogenizing technology laser scanning ring facula temperature field
“我国激光技术与应用2035 发展战略研究”项目综合组
《中国工程科学》 2020年 第22卷 第3期 页码 1-6 doi: 10.15302/J-SSCAE-2020.03.001
为促进激光技术及应用的发展,中国工程院于2018 年启动了“我国激光技术与应用2035 发展战略研究”重点咨询项目,本文是项目研究综合报告,文章简要分析了激光技术及在科研与产业中的工具性、引领性和颠覆性作用,分析了我国激光技术在前沿激光、制造加工、信息通信、医疗诊治等领域的科研和应用的发展现状,梳理了多个制约加速发展的问题,提出了我国激光技术及应用2035 年发展目标设想:强化顶层统筹谋划,引领我国激光技术与应用产业快速发展;加强基础研究,聚力突破产业化发展中的重大基础问题、共性技术基础和基础材料、器件;设立应用研发专项,打造多个新激光产业链;创新产业协同机制,完善激光产业创新生态;强化激光基础教育,加大对激光及光学学科人才培养力度等政策措施建议。
《机械工程前沿(英文)》 2022年 第17卷 第4期 doi: 10.1007/s11465-022-0703-5
关键词: laser beam welding parameter optimization metamodel multi-objective
Development of lunar regolith composite and structure via laser-assisted sintering
《机械工程前沿(英文)》 doi: 10.1007/s11465-021-0662-2
关键词: in situ manufacturing laser-assisted powder fusion process mechanical properties topological structure design
Advances in polishing of internal structures on parts made by laser-based powder bed fusion
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0724-0
关键词: laser-based powder bed fusion polishing internal structures surface quality surface features post process additive manufacturing
《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-022-0675-5
关键词: ceramic parts trimming computer-aided laser manufacturing 3D vision reconfigurable laser processing system
标题 作者 时间 类型 操作
Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method
Zilin HUANG,Gang WANG,Shaopeng WEI,Changhong LI,Yiming RONG
期刊论文
Hybrid forming mechanism of patternless casting and laser cladding
Zhongde SHAN, Fuzhen SUN, Yang LIU
期刊论文
The Application and the Prospect of Remanufacturing Technologies in the Metallurgical Industry
Jie Xiong,Jian-cheng Fan,Jv Yuan
期刊论文
Influence of the field humiture environment on the mechanical properties of 316L stainless steel repaired with Fe314
Lianzhong ZHANG, Dichen LI, Shenping YAN, Ruidong XIE, Hongliang QU
期刊论文
Construction of nitrogen-doped carbon cladding LiMnO film electrode with enhanced stability for electrochemically
期刊论文
Temperature field simulation of laser homogenizing equipment
Juanjuan WANG, Yunshan WANG, Fudong ZHU
期刊论文
Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC
期刊论文