Abstract

12%Cr stainless steels are among the most difficult to cut materials because of their high work-hardening trend and high resistance to heat. 3%Co–12%Cr heat-resistant stainless steel is one of the 12%Cr steels used for critical parts in ultra super critical power plant. The main objectives of this study are to investigate wear and failure mechanism of cemented carbide tool of TiCN/TiN multilayer coating during milling process of 3%Co–12%Cr stainless steel and to explore the machinability of the material. The machined surfaces were analyzed by scanning electron microscopy (SEM). The tool life experiments were based on single-tooth-milling using two kinds of inserts with different geometry. It was found with the experiments that cutting tools with 17° rake angle inserts have longer life than that of with rake angle of 28°. SEM and EDX analysis were used to analyze wear and failure mechanism of the tool. It is found with the experiment that tool wear progression follows a three-stage wear pattern and abrasive, attrition, adhesive and diffusive wear appear in different stages. The correlations among cutting conditions, surface integrity and tool wear were also explored.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.