The Correlation between Non-metallic Inclusions and Machinability in Free Cutting Structure Steels

Li Xilin; Sun Weiping; Zhang Erbo; Zhang Mingyang

doi:10.13374/j.issn1001-053x.1987.02.001

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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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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

doi: 10.13374/j.issn1001-053x.1987.02.001

Received Date: 1986-07-26
Available Online: 2021-10-28

Abstract

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·Ne^γ
According to the model, the tool life(T) dePends mainly on effective number(Ne) and homogeneity(H) of non-metallic inclusions in steels.
- free cutting steel,
- non-metallic inclusion,
- tool life