The serious events of core bending and deformation of several transformers in Lingao Nuclear Power Station happened in less than 3 years under the normal operating conditions.
岭澳核电站主变压器在正常运行工况条件下，在不足3年的时间里就接连出现多台变压器铁心严重弯曲变形事件。
Under shock load conditions the peak load can exceed the ultimate bending strength of the core material and fracture occurs, usually at the most highly stressed cross section area.
在冲击负荷下，最大负荷超过了轧辊芯部材料所能承受的最大抗弯曲负荷，发生截面断裂。断裂一般产生于负荷应力为最大的截面。
Structure: by the cylinder roller mode, even is the core of bronze and mutual into plastic mould, also can avoid all sorts of bending deformation.
结构：辊模由钢筒芯构成，即便覆盖有互交式青铜和塑料模，也能避免各种弯曲变形。
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