| 电解抛光工艺对 AP1000 管座焊接表面的改善作用 |
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| 引用本文： | 黄军波,何毅,殷福星.电解抛光工艺对 AP1000 管座焊接表面的改善作用[J].表面技术,2013,42(5):70-73. |
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| 作者姓名： | 黄军波 何毅 殷福星 |
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| 作者单位： | 中国一重能源装备材料科学研究所, 天津 300457;中国一重能源装备材料科学研究所, 天津 300457;中国一重能源装备材料科学研究所, 天津 300457 |
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| 摘 要： | 研究了AP1000上封头CRDM管座用焊接镍基合金的电解抛光工艺条件,探讨了电解抛光对其表面粗糙度和应力的改善作用。结果表明:焊接镍基合金的抛光电流密度应控制在0.3~0.5 A/cm2之间,抛光时间宜为2~5 min;电解抛光使表面拉应力大幅度减少,甚至产生压应力,这可抑制焊接镍基合金应力腐蚀开裂的发生。
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| 关 键 词： | 焊接镍基合金 电解抛光 表面粗糙度 表面应力 |
| 收稿时间： | 5/8/2013 12:00:00 AM |
| 修稿时间： | 2013/5/23 0:00:00 |
Improvement of Electro-polishing on the Welding Nickel-based Alloy Surface of AP1000 CRDM Nozzle |
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| HUANG Jun-bo,HE Yi and YIN Fu-xing.Improvement of Electro-polishing on the Welding Nickel-based Alloy Surface of AP1000 CRDM Nozzle[J].Surface Technology,2013,42(5):70-73. |
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| Authors: | HUANG Jun-bo HE Yi and YIN Fu-xing |
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| Affiliation: | Materials Research Institute for Energy Equipments, China First Heavy Industries, Tianjin 300457 , China;Materials Research Institute for Energy Equipments, China First Heavy Industries, Tianjin 300457 , China;Materials Research Institute for Energy Equipments, China First Heavy Industries, Tianjin 300457 , China |
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| Abstract: | Electro-polishing process for the welding nickel-based alloy of AP1000 upper head CRDM nozzle was studied. The improvement on the surface roughness and residual surface stress were investigated. The results show that the current density should be controlled in the range of 0 . 3 ~ 0 . 5 A / cm2and the polishing time should be within 2 ~ 5 min. The residual stress tests in surface demonstrate that tensile stress is remarkably decreased, and even pressing stress is induced by the electropolishing process, which may restrain the occurrence of stress-corrosion cracking in the welding nickel-based alloy. |
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| Keywords: | welding nickel alloy electro-polishing surface roughness surface stress |
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