简介:改善高温气冷用石墨抗氧化性能对高温气冷堆安全性具有重要意义。本文利用HSC—CHEMISTRY4.1计算软件分析了SiC涂层、SiO2涂层和SiC/SiO2复合涂层在高温气冷堆正常服役条件和事故条件下的热稳定性,并用氧化试验对热稳定性和抗氧化性能进行了研究。结果表明,SiC/SiO2复合涂层在高温气冷堆正常服役条件和事故条件均能保持长期稳定。在纯氮气及氮气-空气混合气体氧化条件下,SiC/SiO2复合涂层均具有很好的热稳定性,并且能显著改善高温气冷堆用石墨的抗氧化性能。
简介:本文简述国内外钢结构行业发展现状及建筑钢结构行业采用机器人自动焊接的必要性,介绍了钢结构行业用焊接机器人的关键技术:离线编程、智能编程软件;接触传感、电弧跟踪、数据库等厚板焊接技术。着重介绍了柱牛腿焊接系统、箱型梁内隔板焊接系统、便携式智能机器人MICROBO等典型建筑钢结构机器人焊接系统。
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