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首页> 外文会议>Materials Science Technology Conference and Exhibition >THE CORRELATION OF WELDING INTEGRITY ON BIMETAL JOINTS TO THE PERFORMANCE OF A CIRCUIT BREAKER UNDER OVERLOAD CONDITIONS
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THE CORRELATION OF WELDING INTEGRITY ON BIMETAL JOINTS TO THE PERFORMANCE OF A CIRCUIT BREAKER UNDER OVERLOAD CONDITIONS

机译：过载条件下焊接完整性对双金属关节对断路器性能的性能的相关性

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Thermostatic bimetals are cold rolled strips that are made by cladding two or more alloys that have different rates of thermal expansion and bend in a defined way when heated under current load. The layer that develops the largest thermal expansion when heated is called the high expansion side or HES and the side that develops the lowest thermal expansion is called the low expansion side or LES. Bimetals are extensively used in low voltage circuit breakers and deflect in a predictive way when the amount of heat generated exceeds the current rating of the breaker. Both sides of the bimetal are resistance welded. One side is welded to the load connection terminal and the other side is welded to a braid. The quality of welding affects the deflection of the bimetal which in turn affects how fast the breaker trips under current overload conditions. This study will correlate the quality of the bimetal weld joint to the performance of the breaker under current overload conditions. The quality of the weld was analyzed using metallographic techniques, microhardness testing, and electron microscopy.
机译：恒温双丝物是冷轧条，其通过包层，当在电流负载下加热时，通过覆包两个或更多个具有不同热膨胀速率和弯曲弯曲的合金的合金。在加热时产生最大热膨胀的层被称为高膨胀侧或HER，并且产生最低的热膨胀的侧被称为低膨胀侧或LES。当产生的热量超过断路器的电流额定值时，双金属被广泛地用于低压断路器并以预测的方式偏转。双金属的两侧是电阻焊接。一侧焊接到负载连接端子，另一侧焊接到辫子上。焊接质量影响了双金属的偏转，反过来影响断路器在当前过载条件下的断路器跳闸的快速。该研究将在电流过载条件下将双金属焊接接头的质量与断路器的性能相关联。使用金相技术，微硬度测试和电子显微镜分析焊缝的质量。

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