Effect of Subcritical Treatment on Structure and Properties of High Strength Steel 40SiMnCrNiMo for Rock Drill Tools

徐翔; 季克进; 王斌; 高林; 方军

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Effect of Subcritical Treatment on Structure and Properties of High Strength Steel 40SiMnCrNiMo for Rock Drill Tools

更新时间：2026-01-21

- Effect of Subcritical Treatment on Structure and Properties of High Strength Steel 40SiMnCrNiMo for Rock Drill Tools
- Special Steel Vol. 27, Issue 6, Pages: 57-58(2006)
- 作者机构：
  
  大冶特殊钢股份有限公司,黄石,435001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 June 2006，
  
  Online First：02 March 2023，
  
  Published：02 March 2006
- 稿件说明：
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徐翔, 季克进, 王斌, et al. Effect of Subcritical Treatment on Structure and Properties of High Strength Steel 40SiMnCrNiMo for Rock Drill Tools[J]. Special Steel, 2006, 27(6): 57-58.
DOI：

徐翔, 季克进, 王斌, et al. Effect of Subcritical Treatment on Structure and Properties of High Strength Steel 40SiMnCrNiMo for Rock Drill Tools[J]. Special Steel, 2006, 27(6): 57-58. DOI：

摘要

为简化40SiMnCrNiMo钢钎具的热处理工艺

试验了880℃30min油冷+600℃60min空冷的调质处理

860℃30min空冷的正火和780℃30min空冷的两相区亚临界热处理后钢的组织和性能。结果表明

亚临界热处理后钢中贝氏体区HV显微硬度值低于正火钢

钢的V-型冲击功为30J

高于正火后钢V-型冲击功(12J)

接近调质后的V-型冲击功(40J)。钎杆寿命试验得出

正火钢钎具平均钻孔进尺10.78m

亚临界热处理钢钎具平均钻孔进尺108.30m

可满足使用要求和替代调质处理钎杆。

Abstract

The structure and properties of steel with three kinds heat treatment processes - quenched at 880 ℃ for 30 min oil cooling + tempered at 600 ℃ for 60 min air cooling

normalized at 860 ℃ for 30 min air cooling and two-phase region subcritical treated at 780 ℃ for 30 min air cooling

in order to get a simplified heat treatment process of 40SiMnCrNiMo for rock drill tools. The results showed that the HV microhardness value at bainite region of subcritical heat treated steel lowed than that of normalized steel and V- notched impact energy was 30 J higher than that of normalized steel (12J)and approached to that of quenched and tempered steel(40 J). The test for service life of rock drill tools indicated that as compared with average 10.78 m drill pace of advance of normalized steel tool

the average drill pace of advance of suberitical treated steel tools was 108.30 m to meet the requirement of use and to be available to replace quenched and tempered drill tools.

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