Nb-V微合金化0.15～0.35Mo含量和轧制温度对建筑用耐火钢性能的影响
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摘要
试验钢采用50 kg中频感应炉熔炼,并轧成13 mm钢板。试验了R_1-0.15MoNb,R_2-0.15MoV,R_3-0.35MoNbV,R_4-0.35MoNbVB和R_5-0.35MoNbVTiB耐火钢的轧制温度(1 010～1 050℃)对该钢性能的影响。结果表明,R_3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124 J;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。
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 R_1-0.15 Mo,R_2-0.15 MoV, R_3-0.35 MoNbV, R_4-0.35 MoNbVB and R_5-0.35 MoNbVTiB on properties of the steels has been tested.Results show that the R3 steel(/%:0.04 C, 1.12 Mn,0.32 Si,0.018 P,0.023 S,0.35 Cr,0.35 Mo,0.025 Nb,0.15 V) rolled at 1 030 ℃ 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 at0 ℃ 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.
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 R_1-0.15 Mo,R_2-0.15 MoV, R_3-0.35 MoNbV, R_4-0.35 MoNbVB and R_5-0.35 MoNbVTiB on properties of the steels has been tested.Results show that the R3 steel(/%:0.04 C, 1.12 Mn,0.32 Si,0.018 P,0.023 S,0.35 Cr,0.35 Mo,0.025 Nb,0.15 V) rolled at 1 030 ℃ 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 at0 ℃ 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.
引文
[1]殷海荣,李阳.耐火钢耐火机理的研究[J].钢铁研究,2008, 22(2):59-61.
[2] Bennetts I D,Moinuddin K AM,Goh C C,et al. Testing and Factors Relevant to the Evaluation of the Structural Adequacy of Steel Members Within fire-resistant Elevator Shafls[J]. Fire Safety Journal,2005,40:698-705.
[3] Assefpour-Dezfuly M, Hugaas B A, Brownrigg A. Fire Resistant highstrength low-alloy Steels[J]. Materials Science and Technology, 1990,6:1210-1224.
[4]黄贞益,陈光,曹燕.建筑用耐火钢的开发研究[J].热加工工艺,2010,25(4):9-12.
[5]刘志勇.建筑用耐火钢性能与组织的研究[D]昆明:昆明理工大学硕士论文,2005.
[6]胡忠仁.日本生产的建筑结构用耐火钢[J].世界金属导报,2000,10(22):2-4.
[7]东涛,孟繁茂,傅俊岩.微合金化钢知识讲座[M].北京:北京理工大学出版社,2001.
[8]黄贞益,陈光,曹燕.建筑用耐火钢的开发研究[J].热加工工艺,2004,2(4):9-12.
[9]王泽林,王道远,张智义,等.耐火钢及其制造方法[M]北京:知识产权出版社,2003,2-5.
[10]刘志勇,杨才福,沈俊昶,等.建筑用耐火钢组织与性能的研究[J].建筑用材,2005,20(80):75-79.
[2] Bennetts I D,Moinuddin K AM,Goh C C,et al. Testing and Factors Relevant to the Evaluation of the Structural Adequacy of Steel Members Within fire-resistant Elevator Shafls[J]. Fire Safety Journal,2005,40:698-705.
[3] Assefpour-Dezfuly M, Hugaas B A, Brownrigg A. Fire Resistant highstrength low-alloy Steels[J]. Materials Science and Technology, 1990,6:1210-1224.
[4]黄贞益,陈光,曹燕.建筑用耐火钢的开发研究[J].热加工工艺,2010,25(4):9-12.
[5]刘志勇.建筑用耐火钢性能与组织的研究[D]昆明:昆明理工大学硕士论文,2005.
[6]胡忠仁.日本生产的建筑结构用耐火钢[J].世界金属导报,2000,10(22):2-4.
[7]东涛,孟繁茂,傅俊岩.微合金化钢知识讲座[M].北京:北京理工大学出版社,2001.
[8]黄贞益,陈光,曹燕.建筑用耐火钢的开发研究[J].热加工工艺,2004,2(4):9-12.
[9]王泽林,王道远,张智义,等.耐火钢及其制造方法[M]北京:知识产权出版社,2003,2-5.
[10]刘志勇,杨才福,沈俊昶,等.建筑用耐火钢组织与性能的研究[J].建筑用材,2005,20(80):75-79.