Li Xilin, Sun Weiping, Zhang Erbo, Zhang Mingyang. The Correlation between Non-metallic Inclusions and Machinability in Free Cutting Structure Steels[J]. Chinese Journal of Engineering, 1987, 9(2): 1-7. DOI: 10.13374/j.issn1001-053x.1987.02.001
Citation: Li Xilin, Sun Weiping, Zhang Erbo, Zhang Mingyang. The Correlation between Non-metallic Inclusions and Machinability in Free Cutting Structure Steels[J]. Chinese Journal of Engineering, 1987, 9(2): 1-7. DOI: 10.13374/j.issn1001-053x.1987.02.001
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The Correlation between Non-metallic Inclusions and Machinability in Free Cutting Structure Steels

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    • Abstract
  • By using the quantitative image analyzer, EPMA, SEM et al, the effects of the size, inter-distance, homogeneity and number of non-metallic inclusions mainly in Ca-S free cutting structure steel on tool life were studied.The results show that the critical length of non-metallic was 8 μm under this experimental conditions.
    A mathematical model describing the relation between the parameters of non-metallic inclusions and tool life was set up:
    T=α·Hβ·Neγ
    According to the model, the tool life(T) dePends mainly on effective number(Ne) and homogeneity(H) of non-metallic inclusions in steels.
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