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Volume 27 Issue 6
Sep.  2013
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Article Navigation >  LASER TECHNOLOGY  > 2003 >  27(6): 500-502,509

Citation:
shu

Investigation of laser surface hardening for mould-cutting roller

  • 1.

    College of Physical Science & Engineering, Zhengzhou University, Zhengzhou, 450052;

  • 2.

    Department of Physics, Zhoukou Normal College, Zhoukou, 466000

  • Received Date: 2002-12-30
  • The laser surface hardening for mould-cutting roller of 50 carbon steel is carried out using continuous wave CO2 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.
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  • [1] 潘邻,陶锡麒,夏春怀 et al.金属热处理,2002,27(1):18～20.
    [2] 邹湘军,樊湘芳,石世宏 et al.激光技术,2002,26(1):68～70.
    [3] 花银群,陈瑞芳.机械设计与制造工程,2001,30(1):55～56.
    [4] 马自忠.金属热处理,1999,24(8):5～7.
    [5] 林剑东,郑会军,李大东 et al.钢铁钒钛,1998,19(4):31～35.
    [6] 王存山,关振中,石岩 et al.应用激光,1998,18(4):148～150,160.
    [7] 袁斌,龚知本,沈书泊 et al.激光技术,1999,23(6):364～368.
    [8] 王家金.激光加工技术.北京:中国计量出版社,1992:189～209.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Investigation of laser surface hardening for mould-cutting roller

  • 1. College of Physical Science & Engineering, Zhengzhou University, Zhengzhou, 450052;
  • 2. Department of Physics, Zhoukou Normal College, Zhoukou, 466000
  • Received Date: 2002-12-30
  • Available Online: 2003-11-25

Abstract: The laser surface hardening for mould-cutting roller of 50 carbon steel is carried out using continuous wave CO2 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.

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