摘要
随着垃圾电站技术的发展,锅炉高温腐蚀问题越来越突出。针对锅炉管出厂时未做热处理以及管排在焊接后焊缝内应力较大的问题,提出了水冷壁感应熔覆涂层制备与基体协同强化技术。采用协同退火正火工艺制备锅炉管材试件,并进行了拉伸、低温冲击试验和晶粒度、表面硬度、脱碳层深度检测。结果表明:管基体经过加热强化处理后的强度、塑性和韧性等主要机械性能均有不同程度的改善,该方法理论上能够显著增加耐腐蚀锅炉管的使用寿命。
With the development of waste power station technology,the problem of boiler high temperature corrosion has become more and more prominent.Aiming at the problems that the boiler tube is not heat-treated when leaving the factory and the internal stress of the welded seam of the tube row is relatively large after welding,a technology of synergistically strengthening the substrate in the preparation process of the induction cladding coating of the water wall is proposed.The boiler tube specimens were prepared by the collaborative annealing-normalizing process,and then the tensile test and low-temperature impact test were carried out.In addition,the grain size,surface hardness,and depth of the decarburized layer of the specimens were tested.The results show that the main mechanical properties of the tube substrate,such as strength,plasticity and toughness,have been improved to varying degrees after heating and strengthening treatment.This method can theoretically significantly increase the service life of corrosion-resistant boiler tubes in the furnace.
作者
曲作鹏
赵文博
王磊
吴永新
张贝贝
田欣利
QU Zuopeng;ZHAO Wenbo;WANG Lei;WU Yongxin;ZHANG Beibei;TIAN Xinli(School of New Energy,North China Electric Power University,Beijing 102206,China;Central Research Institute of Building and Construction of MCC Group,Beijing 100088,China;POWERCHINA Shanghai Electric Power Engineering Co.,Ltd.,Shanghai 200025,China;Key Laboratory of National Defense Technology for Equipment Remanufacturing Technology,Army Academy of Armored Forces,Beijing 100072,China)
出处
《锅炉技术》
北大核心
2022年第6期8-12,共5页
Boiler Technology
基金
国家重点研发计划(2019YFC1907000)
中央高校基本科研业务费(2020JG003)。
关键词
垃圾焚烧
高温腐蚀
感应熔覆
协同强化
waste incineration
high temperature corrosion
induction cladding
synergistic strengthening
