Si对离心铸造25Cr35NiNb+微合金乙烯裂解炉管抗氧化和抗渗碳性能的影响
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摘要
开展了不同Si元素含量对25Cr35NiNb+微合金乙烯裂解炉管抗高温氧化和抗渗碳性能的影响研究。结果表明,Si含量在1.33%~1.93%范围内,炉管室温和高温力学性能与Si含量之间没有明显规律;Si含量在1.53%~1.91%范围内,随着Si含量的提高,炉管抗高温氧化和抗渗碳性能显著增强。同时还给出了25Cr35NiNb+微合金乙烯裂解炉管中Si元素含量的推荐值。
The effects of different content of Si element on oxidation and caburization resistance of spun cast 25Cr35NiNb + micro-alloy ethylene pyrolysis furnace tube were researched. The results show that when the Si content falls in the range of 1. 33% ~ 1. 93%,there is no significant law between the mechanical properties of the furnace tubes at room and high temperature and Si content; when the Si content falls in the range of 1. 53% ~ 1. 91%,with the increase of Si content,the resistance to oxidation and carburization of the furnace tubes at high temperature was substantially enhanced. At the same time,the recommended value of Si element content in 25Cr35NiNb + micro-alloy ethylene pyrolysis furnace tube was given.
The effects of different content of Si element on oxidation and caburization resistance of spun cast 25Cr35NiNb + micro-alloy ethylene pyrolysis furnace tube were researched. The results show that when the Si content falls in the range of 1. 33% ~ 1. 93%,there is no significant law between the mechanical properties of the furnace tubes at room and high temperature and Si content; when the Si content falls in the range of 1. 53% ~ 1. 91%,with the increase of Si content,the resistance to oxidation and carburization of the furnace tubes at high temperature was substantially enhanced. At the same time,the recommended value of Si element content in 25Cr35NiNb + micro-alloy ethylene pyrolysis furnace tube was given.
引文
[1]连晓明,陈学东,吕运容,等.高温时效对25Cr35NiNb合金碳化物的影响[J].压力容器,2011,28(8):1-5.
[2]Voicu R,Andrieu E,Poquillon D,et al.Microstructure evolution of HP40-Nb alloys during aging under air at1000℃[J].Materials Characterization,2009,60(9):1020-1027.
[3]沈利民,巩建鸣,唐建群,等.Cr25Ni35Nb和Cr35Ni45Nb裂解炉管的抗高温渗碳能力[J].上海交通大学学报,2010,44(5):604-608.
[4]宋若康,张麦仓,彭以超,等.Cr35Ni45钢高温长期服役过程的氧化与渗碳机理[J].北京科技大学学报,2014,26(8):1045-1051.
[5]陈涛,陈学东,艾志斌,等.长期服役后乙烯裂解炉管KHR45A高温氧化现象研究[J].压力容器,2010,27(1):1-4.
[6]王红霞.乙烯裂解炉及急冷锅炉结焦抑制技术研究进展[J].石油化工,2012,7(41):844-852.
[7]苏勇,付广艳,刘群.Si含量对熔炼Fe-Si合金高温氧化行为的影响[J].沈阳化工学院学报,2008,22(2):157-161.
[8]SH/T 3423—2011,石油化工管式炉用铸造高合金炉管及管件技术条件[S].
[9]HG/T 2601—2011,高温承压用离心铸造合金炉管[S].
[10]Liu Chunjiao,Chen Xuedong,Chen Tao,et al.Carbide transformation in carburized zone of 25Cr35Ni Nb+MA alloy after high-temperature service[J].Materials at High Temperatures,2016,33:98-104.
[11]Chen Tao,Chen Xuedong,Liu Chunjiao,et al.Carburization of ethylene pyrolysis furnace tube in a petrochemical plant[J].Journal of Pressure Vessel Technology,2015,137(6):V06AT06A067.
[12]连晓明,钱兵,刘春娇,等.服役5年后乙烯裂解炉管的组织与性能研究[J].压力容器,2016,33(8):1-6.
[13]李洁翡,尹付成,刘永雄,等.Si对Fe Mo Cr Ni高温耐磨合金的组织和抗氧化性能的影响[J].中国有色金属学报,2015,25(11):3084-2091.
[14]谢苏江,朱宗亮.高温抗氧化柔性石墨密封材料的制备和性能研究[J].流体机械,2017,45(2):12-16.
[15]郭建亭.几种微量元素在高温合金中的作用与机理[J].中国有色金属学报,2011,21(3):465-475.
[2]Voicu R,Andrieu E,Poquillon D,et al.Microstructure evolution of HP40-Nb alloys during aging under air at1000℃[J].Materials Characterization,2009,60(9):1020-1027.
[3]沈利民,巩建鸣,唐建群,等.Cr25Ni35Nb和Cr35Ni45Nb裂解炉管的抗高温渗碳能力[J].上海交通大学学报,2010,44(5):604-608.
[4]宋若康,张麦仓,彭以超,等.Cr35Ni45钢高温长期服役过程的氧化与渗碳机理[J].北京科技大学学报,2014,26(8):1045-1051.
[5]陈涛,陈学东,艾志斌,等.长期服役后乙烯裂解炉管KHR45A高温氧化现象研究[J].压力容器,2010,27(1):1-4.
[6]王红霞.乙烯裂解炉及急冷锅炉结焦抑制技术研究进展[J].石油化工,2012,7(41):844-852.
[7]苏勇,付广艳,刘群.Si含量对熔炼Fe-Si合金高温氧化行为的影响[J].沈阳化工学院学报,2008,22(2):157-161.
[8]SH/T 3423—2011,石油化工管式炉用铸造高合金炉管及管件技术条件[S].
[9]HG/T 2601—2011,高温承压用离心铸造合金炉管[S].
[10]Liu Chunjiao,Chen Xuedong,Chen Tao,et al.Carbide transformation in carburized zone of 25Cr35Ni Nb+MA alloy after high-temperature service[J].Materials at High Temperatures,2016,33:98-104.
[11]Chen Tao,Chen Xuedong,Liu Chunjiao,et al.Carburization of ethylene pyrolysis furnace tube in a petrochemical plant[J].Journal of Pressure Vessel Technology,2015,137(6):V06AT06A067.
[12]连晓明,钱兵,刘春娇,等.服役5年后乙烯裂解炉管的组织与性能研究[J].压力容器,2016,33(8):1-6.
[13]李洁翡,尹付成,刘永雄,等.Si对Fe Mo Cr Ni高温耐磨合金的组织和抗氧化性能的影响[J].中国有色金属学报,2015,25(11):3084-2091.
[14]谢苏江,朱宗亮.高温抗氧化柔性石墨密封材料的制备和性能研究[J].流体机械,2017,45(2):12-16.
[15]郭建亭.几种微量元素在高温合金中的作用与机理[J].中国有色金属学报,2011,21(3):465-475.