2002•Heat treatment of metalsRequires access

Surface Hardening of 70Mn2Mo Cast Steel Hot Roller by Laser

Li Zhu

Abstract

The fine martensite could be gained in 70Mn2Mo cast steel roller by laser strengthening.The microhardness and hardened depth of the roll can reach 920HV and 0 6mm respectively.After tempering at high temperature,the hardness and the hardened depth can be maintained above 430HV and 0 4mm respectively.It is showed that the laser treated rollers possess good tempering resistance.

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Available abstract

Key concepts: Tempering, Materials science, Indentation hardness, Metallurgy, Martensite, Hardening (computing), Laser, Hardness