Investigation of laser surface hardening for mould-cutting roller

Chao Mingju; Du Yuandong; Liang Erjun; Yu Jumei

LASER TECHNOLOGY > 2003 > 27(6): 500-502,509.

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.

Citation:

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.

Citation:

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.

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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

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Received Date: December 29, 2002
Published Date: November 24, 2003

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Abstract

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

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References

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Investigation of laser surface hardening for mould-cutting roller

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