| 厚壁筒体环焊缝冷裂纹评定 |
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| 引用本文： | 丁春燕,王云程,张一兵,杨杰.厚壁筒体环焊缝冷裂纹评定[J].河北工业科技,1998(1). |
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| 作者姓名： | 丁春燕 王云程 张一兵 杨杰 |
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| 作者单位： | 河北化工学校，河北科技大学材料科学与工程系，石家庄高新技术创业服务中心，河北科技大学化工装备与控制工程系 石家庄 050031 |
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| 摘 要： | 用断裂力学理论评定冷裂纹时,首先应辨别是何种冷裂纹,如果是延迟裂纹,即使裂纹很短,也是不允许的。因为合成塔运行时,氢连续不断地向裂纹部位形成的三向应力峰值区进行扩散,并使裂纹不停地扩展。
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| 关 键 词： | 厚壁筒体 环焊缝 延迟裂纹 断裂力学 |
Appraisal for Cold Cracking in Ring Welds of Thick Cylinders |
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| Ding Chunyan Wang Yuncheng Zhang Yibing Yang Jie Hebei Chemical Industry School,Shijiazhuang.Appraisal for Cold Cracking in Ring Welds of Thick Cylinders[J].Hebei Journal of Industrial Science & Technology,1998(1). |
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| Authors: | Ding Chunyan Wang Yuncheng Zhang Yibing Yang Jie Hebei Chemical Industry School Shijiazhuang |
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| Institution: | Ding Chunyan Wang Yuncheng Zhang Yibing Yang Jie Hebei Chemical Industry School,Shijiazhuang,050031 |
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| Abstract: | When a cold crack is appraised by using the theory of fracture mechanics, it is necessary to determine the kind of these cold cracks at first,if it is a delayed cracking,it can not be allowed in existence even very short,because the hydrogen will diffuse continuously into the region where the peak values of stress in three dimensions of the crack' s front during the synthesizer running,and it enables the cracks to propagate incessantly. |
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| Keywords: | thick-walled cylinder ring weld delayed cracking fracture mechnnics |
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