Study of Surface Residual Stress in Hard Turning of Die Steel Cr12MoV

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Abstract:

After hard cutting process, processed surface residual stress distribution state has a significantly effect on life of parts. In this paper, typical mold steel Cr12moV as the object of study, after the hard state processing in different cutting parameters and tool parameters, effects of different cutting parameters and tool parameters on surface residual stress and residual stress affected layer. Results showed that different cutting parameters and tool parameters can make different tensile stress distributing on surface, and the residual surface stress is can also be compressive stress. Through the experiment can be found with greater speed, cutting tool wear is bigger, the machined surface residual compressive stress and affected layer depth and when the tool flank wear is greater than 0.3mm, also the surface residual stress distribution curve downward obviously. The research results provide reference for optimization of processing conditions.

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Periodical:

Key Engineering Materials (Volumes 589-590)

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33-37

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October 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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