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It is of great significance to develop an intelligent monitoring system for weld penetration defects such as incomplete penetration and burn-through in real-time during robotic arc welding process. In this paper, robotic gas metal arc welding experiments are carried out on the mild steel test pieces with Vee-type groove. Through-the-arc sensing method is used to capture the transient values of the welding voltage and current. The raw data of the captured welding current and voltage are processed statistically, and the feature vector S10 is extracted to correlate the welding conditions to the weld penetration information. It lays foundation for intelligent monitoring of weld quality in robotic arc welding. 相似文献
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作者在提出了考虑含气量变化的同液两相流浆体水击基本方程的基础上,建立了考虑含气量变化的浆体水击模型。运用该模型对某电厂除灰系统管道进行了水击数值计算,根据计算结果提出了合理的建议,该建议已被采纳和应用。同时将计算结果与原有清水水击模型和浆体水击模型的计算结果进行比较,结果表明:该水击计算模型在进行同液两相流水击计算时精度高,可用于工程计算。 相似文献
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段晓宁 《中国新技术新产品》2013,(14):166-167
供电营业抄核收管理作为电力营销工作的关键环节,是供电企业生产经营成果的重要体现,也是影响企业经济效益的重要因素。近几年来宁夏吴忠市供电公司积极推行营销改革,统一和规范供电营业市场秩序,取得了良好成效。根据多年的基层供电营业管理实践经验,探讨了供电营业抄核收工作差错出现的问题及解决措施。 相似文献
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