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Analyses of surface roughness by turning process using Taguchi method

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Thamizhmanii S. , Saparudin S. , Hasan S.

Journal of Achievements in Materials and Manufacturing Engineering

2007

tom Vol. 20, nr 1-2

503-506

Purpose: The purpose of this research paper is focused on the analysis of optimum cutting conditions to get lowest surface roughness in turning SCM 440 alloy steel by Taguchi method. Design/methodology/approach: Experiment was designed using Taguchi method and 18 experiments were designed by this process and experiments conducted. The results are analyzed using analysis of variance (ANOVA) method. Findings: Taguchi method has shown that the depth of cut has significant role to play in producing lower surface roughness followed by feed. The cutting speed has lesser role on surface roughness from the tests. Research limitations/implications: The vibrations of the machine tool, tool chattering are the other factors which may contribute poor surface roughness to the results and such factors ignored for analyses. Originality/value: The results obtained by this method will be useful to other researches for similar type of study and may be eye opening for further research on tool vibrations, cutting forces etc.

Surface roughness analyses on hard martensitic stainless steel by turning

100%

Thamizhmanii S. , Bin Omar B. , Saparudin S. , Hasan S.

Journal of Achievements in Materials and Manufacturing Engineering

2008

tom Vol. 26, nr 2

139-142

Purpose: The purpose of this research paper was to analyze the surface roughness produced by turning process on hard martensitic stainless steel by Cubic Boron Nitride cutting tool. The work piece material was hard AISI 440C martensitic stainless steel. Design/methodology/approach: The experiments were designed using various operating parameters like cutting speed, feed rate and depth of cut. These operating parameters are predominantly used in carrying out the experiments. Findings: Low surface roughness was produced at cutting speed of 225 m/min with feed rate of 0.125 mm/rev and 0.50 mm depth of cut (doc). However, moderate cutting speed of 175 m/min under above feed rate and doc is an ideal operating parameters taking flank wear in to account. Research limitations/implications: While searching for references in turning of martensitic stainless steel, very limited journals are available, but very few literatures are available on turning of AISI 440C hard martensitic stainless steel which was a constraint. Practical implications: The turning of hard martensitic stainless steel brings interesting information on surface roughness, tool wear etc. and further can be extended to turn with different cutting tools. Originality/value: The value of the research work lies in using the results by other researches. The result will upgrade the knowledge about the influence parameters on surface roughness especially on martensitic stainless steel especially on martensitic stainless steels.