Effect of Heat Treatment Process on Structure and Mechanical Properties of Steel Q345D for Rudder Stock

范秋梅; 付朝波; 张永恒; 王海珍

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Effect of Heat Treatment Process on Structure and Mechanical Properties of Steel Q345D for Rudder Stock

更新时间：2026-01-21

- Effect of Heat Treatment Process on Structure and Mechanical Properties of Steel Q345D for Rudder Stock
- Special Steel Vol. 32, Issue 1, Pages: 61-63(2011)
- 作者机构：
  
  中原特钢股份有限公司,济源,459008
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：11 October 2010，
  
  Online First：29 September 2022，
  
  Published：29 September 2011
- 稿件说明：
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范秋梅, 付朝波, 张永恒, et al. Effect of Heat Treatment Process on Structure and Mechanical Properties of Steel Q345D for Rudder Stock[J]. Special Steel, 2011, 32(1): 61-63.
DOI：

范秋梅, 付朝波, 张永恒, et al. Effect of Heat Treatment Process on Structure and Mechanical Properties of Steel Q345D for Rudder Stock[J]. Special Steel, 2011, 32(1): 61-63. DOI：

摘要

试验研究了Q345D级钢(%:0.18C、0.41Si、1.34Mn、0.05Nb、0.08V、0.024A1)Φ280 mm锻材淬-回火处理和正火处理后的组织和性能。结果表明

经890℃空冷200 s

水冷+570℃回火后的钢抗拉强度R

≥630MPa

屈服强度R

≥455 MPa

-20℃冲击功A

28～40 J;910℃空冷正火后R

≥575 MPa

Re≥390 MPa

-20℃ A

42～59 J

均满足舵杆产品对力学性能的要求;淬-回火工件距表面30 mm的组织为回火索氏体+粒状贝氏体

中心组织为珠光体+少量粒状贝氏体

正火处理后工件表面与心部均为珠光体+铁素体组织。

Abstract

The structure and properties of Φ280 mm forgings of steel Q345D (%: 0. 18C

0.41Si

1. 34Mn

0. 05Nb

0. 08V

0. 024Al) after quenching + tempering treatment and nominalizing treatment have been tested and studied. Results show that with 890 ℃. air cooling for 200 s

then water cooling + 570℃ tempering the steel tensile strength Rm is ≥630 MPa

yield strength R

is ≥455 MPa and impact energy A

at -20℃ is 28 ~40 J； with normalizing at 910 °C air cooling

the R

and -20 °C AKV of steel are respectively ≥575 MPa;≥390 MPa and 42 ~59 J

all the mechanical properties meet the requirement for rudder stock product ； the structure at depth 30 mm from surface of quenched-tempered rudder stock piece is tempered sorbite + granular bainite

at center it is pearlite + mino

r granular bainite

and all the structure at surface and center of normalized rudder stock piece is pearlite + ferrite.

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