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本文介绍了一种输电线路边坡状态监测系统,它能对铁塔边坡的倾斜状态、降雨强度进行实时监测。并且具有使用方便、运行可靠等优点。目前该设备已在深圳供电局110kV输电线路上使用,为输电线路边坡防护方面提供了有力的技术支撑。 相似文献
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针对BT20钛合金开展了电弧超声TIG焊和常规TIG焊试验以及接头疲劳性能测试,对比分析了两种焊接方法接头的疲劳性能和断口形貌.结果表明:在高加载应力条件下,电弧超声TIG焊接头与常规TIG焊接头的疲劳寿命基本相同;在低加载应力条件下,电弧超声TIG焊接头比常规TIG焊接头疲劳寿命明显增加,疲劳强度(2×106循环周次)提高19%;从断口形貌分析可以看出,电弧超声TIG焊接头组织比常规TIG焊接头在一定程度上得到了改善. 相似文献
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很长一段时间以来,轻钢结构以较好的保温性、抗震性、隔音性、舒适性等优势受到人们的喜爱。特别是20世纪末,国内轻钢材料发展十分迅速。本文主要从轻钢钢结构建筑的优点着手,研究分析轻钢钢结构的安装工作,系统地总结了铜结构在安装时的一些技术要点,给行业相关人员一定参考。 相似文献
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Study on arc-ultrasonic TIG welding of titanium alloy 总被引:2,自引:0,他引:2
TCA alloy was welded by conventional TIG welding and arc-ultrasonic TIG welding respectively. The microstructure of joint was analyzed by means of optical-microscope, scanning electron microscope in order to study the relationship between the macro-properties of joint and the microstructure. The results show that the joints were all welded successfully by conventional TIG welding and arc-ultrasonic TIG welding. With the increment of ultrasonic frequency and activated voltage, the width of joint became narrow step by step. The microstructure became more and more fine and was inclined to equiaxed crystal. Moreover, the dendrite depredation was not observed obviously. The properties of welded joint were improved markedly compared with that of conventional TIG welding. 相似文献
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