模切辊激光表面淬火的研究

基金项目:

河南省高校创新人才基金;2001年度河南省杰出人才创新基金资助项目

详细信息

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

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.
- 激光表面淬火 /
- 50#钢 /
- 模切辊 /
- CO2激光
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.
- laser surface hardening /
- 50 carbon steel /
- mould-cutting roller /
- CO2 laser