Effect of Nb-V Microalloying 0.15 - 0.35Mo Content and Rolling Temperature on Properties of Fire-Resistant Steel for Building

陈俊; 陈晨; 罗恒勇

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Effect of Nb-V Microalloying 0.15 - 0.35Mo Content and Rolling Temperature on Properties of Fire-Resistant Steel for Building

更新时间：2026-01-21

- Effect of Nb-V Microalloying 0.15 - 0.35Mo Content and Rolling Temperature on Properties of Fire-Resistant Steel for Building
- Special Steel Vol. 40, Issue 3, Pages: 49-52(2019)
- 作者机构：
  
  宜宾职业技术学院,宜宾,644003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：01 November 2018，
  
  Online First：17 May 2022，
  
  Published：17 May 2019
- 稿件说明：
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陈俊, 陈晨, 罗恒勇. Effect of Nb-V Microalloying 0.15 - 0.35Mo Content and Rolling Temperature on Properties of Fire-Resistant Steel for Building[J]. Special Steel, 2019, 40(3): 49-52.
DOI：

陈俊, 陈晨, 罗恒勇. Effect of Nb-V Microalloying 0.15 - 0.35Mo Content and Rolling Temperature on Properties of Fire-Resistant Steel for Building[J]. Special Steel, 2019, 40(3): 49-52. DOI：

摘要

试验钢采用50 kg中频感应炉熔炼

并轧成13mm钢板。试验了R1-0.15MoNb

R2-0.15MoV

R3-0.35MoNbV

R4-0.35MoNbVB和R5-0.35MoNbVTiB耐火钢的轧制温度（1 010～1 050℃）对该钢性能的影响。结果表明

R3钢（/%:0.04C

1.12Mn

0.32Si

0.018P

0.023S

0.35Cr

0.35Mo

0.025Nb

0.15N）在1030℃轧制后具有最佳的综合性能

即抗拉强度598 MPa、屈服强度514 MPa、延伸率28%、屈强比0.86、600℃回火前后HV硬度值分别为215和204、0℃冲击功124J;600℃的屈服强度355 MPa

屈强比为0.69

满足耐火钢国家标准要求。

Abstract

Tested steels are melting by a 50 kg medium induction furnace and rolling to 13 mm plate. The effect of rolling temperature (1 010 ~ 1 050 ℃) of tested steel 0.15Mo

R2- 0.15MoV

R3- 0.35MoNbV

R4- 0.35MoNbVB and R5- 0.35MoNbVTiB on properties of the steels has been tested. Results show that the R3 steel (/% : 0.04C

l. 12Mn

0.32Si

0.018P

0.023S

0. 35Cr

0.35Mo

0.025Nb

0.15V) rolled at 1 030 T has excellent comprehensive properties i. e. tensile strength 598 MPa

yield strength 514 MPa

elongation 28%

ratio of yield-tensile strength 0. 86

the HV hardness scale before and after tempering at the temperature of 600 ℃ respectively being 215 and 204

and impact energy of steel at 0 ℃ being 124 J

and the yield strength of steel at 600 ℃ being 355 MPa with ratio of yield-tensile strength 0. 69 to meet the requirement of state standard for fire-resistant steel.

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