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窄边铜板弯月面处热面边角部有最高温度和最大的应力集中,导致该处的塑性变形或蠕变也最严重,这是窄边铜板弯月面处产生宽度收缩的根本原因,作为窄边铜板长寿化的有效措施是强化边部冷却,求得同一水平内的冷却均匀化,并在铜板正面使用Ni基自熔合金热喷涂涂层。
The maximum temperature and the maximum stress concentration at the corner of the hot side of the narrow side copper meniscus result in the most plastic deformation or creep of the place, which is the fundamental reason for the width shrinkage at the meniscus of the narrow side copper plate, As an effective measure for long-life narrow-edge copper plate is to strengthen the edge cooling, to achieve the same level of cooling uniformity, and the use of the front of the copper-based self-fluxing Ni-based thermal spray coating.