Test and Study on Relative Hot Plasticity of MnS Inclusion in a New Free-Cutting Stainless Steel TBPS

罗刚; 王辉绵

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Test and Study on Relative Hot Plasticity of MnS Inclusion in a New Free-Cutting Stainless Steel TBPS

更新时间：2026-01-21

- Test and Study on Relative Hot Plasticity of MnS Inclusion in a New Free-Cutting Stainless Steel TBPS
- Special Steel Vol. 37, Issue 2, Pages: 1-3(2016)
- 作者机构：
  
  太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室,太原,030003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：15 October 2015，
  
  Online First：05 August 2022，
  
  Published：05 August 2016
- 稿件说明：
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罗刚, 王辉绵. Test and Study on Relative Hot Plasticity of MnS Inclusion in a New Free-Cutting Stainless Steel TBPS[J]. Special Steel, 2016, 37(2): 1-3.
DOI：

罗刚, 王辉绵. Test and Study on Relative Hot Plasticity of MnS Inclusion in a New Free-Cutting Stainless Steel TBPS[J]. Special Steel, 2016, 37(2): 1-3. DOI：

摘要

试验易切削不锈钢TBPS（/%:0.02C

0.75Si

1.50Mn

0.008 P

0.21S

19.70Cr

1.10Mo

0.11Pb

0.008Te）由真空感应炉+电渣重熔（Φ350 mm

500kg锭）冶炼

用Gleeble 3800热模拟机试验研究900~1200℃、变形量10%~70%时电渣锭中MnS夹杂的相对热塑性。结果表明

在900~1100℃时

随着变形量的增加

MnS夹杂的相对变形指数γ变小;在1200℃

变形量对MnS央杂相对变形指数γ影响较小;且随着变形温度升高

MnS夹杂的相对变形指数γ减小

特别在1200℃

相对变形指数γ显著减小;为降低MnS延展变形以获得较好的易切削性能

TBPS宜采用高的温度和大的道次变形量进行热变形。

Abstract

The test free-cutting stainless steel TBPS (/% : 0.02C

0.75Si

1.50Mn

0.008P

0.21S

19.70Cr

1.10Mo

0.llPb

0.008Te) is melted by vacuum induction furnace + electro-slag remelting (ESR)(Φ350 mm

500 kg ingot)

and the relative hot plasticity of MnS inclusion in ESR ingot with deformation 10%-70% at 900-1200 °C has been tested and studied by Thermomechanical Simulator Gleeble 3800. The results show that at 900-1100 ℃ with increasing deformation the relative plasticity index γ of MnS inclusion decreases ； at 1200 °C the effect of deformation on the relative plasticity index γ of MnS inclusion is minor ； and with increasing the deformation temperature

the relative plasticity index γ of MnS trends towards decreasing

especially at 1200℃; the relative plasticity index γ decreases obviously. In order to decrease the elongation deformation of MnS to get better free-cutting performance

it available for steel TBPS to hot deform by larger pass deformation at higher temperature.

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