基于超声冲击处理的在役反应器焊缝消应力及高温运行对应力的影响研究  

Stress Relief of In-service Reactor Welds by Ultrasonic Impact Treatment and Impact of High-temperature Operation

作　　者：李峰 崔首龙 史言回 韩锋 王艳飞[2] Li Feng;Cui Shoulong;Shi Yanhui;Han Feng;Wang Yanfei(Jiangsu Xinhua Semiconductor Technology Co.,Ltd.,Jiangsu,221008;School of Chemical Engineering and Technology,China University of Mining and Technology,Jiangsu,221116)

机构地区：[1]江苏鑫华半导体科技股份有限公司,江苏221008 [2]中国矿业大学化工学院,江苏221116

出　　处：《当代化工研究》2024年第20期38-40,共3页Modern Chemical Research

基　　金：江苏省安全学科群“双一流”省补创新项目子课题“工业危化品储运安全保障技术”(项目编号:AQQ-SYLSB2003-OX)。

摘　　要：鉴于多晶硅还原炉有发生应力腐蚀开裂的风险,本文应用超声冲击处理对在役还原炉进行消应力处理,并研究打磨降低粗糙度防止挂污、藏水和高温运行1个月对残余应力的影响。结果表明,超声冲击处理能有效降低在役还原炉焊缝的残余应力,使部分区域应力转为压应力,而打磨对残余应力的影响不大,但超声冲击处理后高温运行会导致应力释放,使超声冲击的有益效果降低,但整体上焊缝仍保持在较低的残余应力水平。Given the risk of stress corrosion cracking in polycrystalline silicon reduction furnaces,this study applied ultrasonic impact treatment to in-service reduction furnaces for residual stress relief.It also investigated the effects of polishing to reduce roughness,prevent contamination and water retention,and high-temperature operation for one month on residual stress.The results show that ultrasonic impact treatment effectively reduces the residual stress in the welds of in-service reduction furnaces,converting stress in some areas to compressive stress.Polishing has minimal impact on residual stress,but high-temperature operation after ultrasonic impact treatment leads to stress release,which diminishes the beneficial effects of ultrasonic impact.Nevertheless,the welds generally maintain a lower residual stress level.

关 键 词：超声冲击处理 应力腐蚀开裂 消应力处理 多晶硅 

分 类 号：TQ[化学工程]