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Title:
Single-row laser beam with energy strengthened ends for continuous scanning laser surface hardening of large metal components
Author: Li SX(李少霞); Yu G(虞钢); Zhang JC; Tan QF; Xu NH; Sun PP(孙培培); Zheng CY(郑彩云)
Source: SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Issued Date: 2013-06-01
Volume: 56, Issue:6, Pages:1074-1078
Abstract: For laser surface hardening of metal components with large superficies, a binary grating is proposed to generate single-row laser beam with proportional-intensity diffractive orders. To obtain a uniform hardened band distribution and improve the wear resistance of the sample surface, the binary grating is designed to produce single-row laser beam with energy strengthened at the two ends. The profile of the laser beam spot was designed to be strip with high length-width ratio to improve the machining efficiency of the hardening of large surfaces. A new advantage is suggested to obtain proportional intensity spots with evenness. The design results show that the diffractive efficiency of the binary grating is more than 70%, and the uniformity is less than 3%. The surface profile of the grating fabricated was measured, which shows that the fabrication error is less than 2%. The application of the binary grating in the laser surface hardening of metal components with large superficies is experimentally investigated, and the results show that the hardness distribution of the modified layer is more uniform than that hardened by Gaussian laser beam or array spots with equal intensity distribution.
Keyword: binary grating ; beam shaping ; laser surface hardening ; diffraction
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Tan QiaoFeng
Correspondent Email: tanqf@mail.tsinghua.edu.cn
Related URLs: 查看原文
WOS ID: WOS:000319072700004
ISSN: 1674-7348
Rank: [Li, ShaoXia; Tan, QiaoFeng, Xu, NingHan] State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China; [Li, ShaoXia; Yu, Gang; Sun, PeiPei; Zheng, CaiYun] Key Laboratory of Mechanics in Advanced Manufacturing, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China; [Zhang, JingChuan] Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China
Subject: 固体力学::制造工艺力学
Department: MAM激光智能制造工艺力学
Classification: 二类/Q3
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/47287
Appears in Collections:先进制造工艺力学重点实验室_期刊论文

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Recommended Citation:
Li SX,Yu G,Zhang JC,et al. Single-row laser beam with energy strengthened ends for continuous scanning laser surface hardening of large metal components[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2013-06-01,56(6):1074-1078.
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