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模切辊激光表面淬火的研究
引用本文:晁明举,杜远东,梁二军,余菊美.模切辊激光表面淬火的研究[J].激光技术,2003,27(6):500-502,509.
作者姓名:晁明举  杜远东  梁二军  余菊美
作者单位:1.郑州大学物理工程学院, 郑州, 450052;
基金项目:河南省高校创新人才基金,2 0 0 1年度河南省杰出人才创新基金资助项目
摘    要:用连续波CO2激光束对50#钢模切辊进行了激光表面淬火试验,研究了淬火层的显微组织及硬度分布.结果表明,50#钢模切辊经激光表面淬火后,硬化层组织由细小的位错马氏体及少量的残余奥氏体组成;模切辊变形很小,且表面硬度高,整体硬度分布较为均匀,能够达到技术要求.采用激光淬火技术对50#钢模切辊进行表面强化是可行的.

关 键 词:激光表面淬火    50#钢    模切辊    CO2激光
文章编号:1001-3806(2003)06-0500-03
收稿时间:2002/12/30

Investigation of laser surface hardening for mould-cutting roller
Chao Mingju ,Du Yuandong ,Liang Erjun ,Yu Jumei.Investigation of laser surface hardening for mould-cutting roller[J].Laser Technology,2003,27(6):500-502,509.
Authors:Chao Mingju  Du Yuandong  Liang Erjun  Yu Jumei
Affiliation:Chao Mingju 1,Du Yuandong 2,Liang Erjun 1,Yu Jumei 1
Abstract:The laser surface hardening for mould-cutting roller of 50 carbon steel is carried out using continuous wave CO 2 laser beam. The microstructure observation and hardness distribution testing in the cross-section of the hardened layer are performed. The results indicate that the microstructure of the hardened layer of mould-cutting roller quenched consists of the fine dislocated lath martensite and a small quantity of residual austenite. After laser surface hardening,the mould-cutting roller possesses of small contraction distortion,high hardness,and uniform distribution of hardness. And hence using laser surface hardening process to modify the surface of mould-cutting roller of 50 carbon steel is practicable.
Keywords:laser surface hardening  50 carbon steel  mould-cutting roller  CO  2 laser
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