| 堆焊层与基体脱壳导致司太立合金脱落的分析与检测 |
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| 引用本文： | 俞刚,陆云,盛险峰,江运慈. 堆焊层与基体脱壳导致司太立合金脱落的分析与检测[J]. 能源技术(上海), 2014, 0(1): 110-112 |
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| 作者姓名： | 俞刚 陆云 盛险峰 江运慈 |
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| 作者单位： | [1]上海市浦东新区特种设备检验所,上海200135 [2]国网上海市电力公司电力科学研究院,上海200437 [3]上海外高桥第二发电有限责任公司,上海200137 [4]上海隽祥检测技术工程公司,上海200942 |
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| 摘 要： | 随着超临界、超超临界燃煤机组的大量应用,发电设备上"家族性"缺陷随之产生,堆焊层与基体脱壳缺陷导致司太立合金(Stellite)脱落就是一例。司太立合金是一种耐磨、耐腐蚀及耐高温氧化的硬质合金。介绍了对超临界、超超临界燃煤机组主汽门、调门堆焊层,采用超声波检测的工作原理、工艺方法、检测仪要求和检测资质。通过案例分析,解读了司太立合金堆焊层与基体"脱壳"的主要原因及评判结果,为进一步了解和跟踪司太立合金堆焊层表面裂纹和"脱壳"缺陷,提供防范措施和技术支撑。
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| 关 键 词： | 超声检测 司太立合金 堆焊层 评定 分析 |
Overlaying Welding Layer and Matrix Analysis and Detection of Stellite Shell Lead Off |
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| Yu Gang,Lu Yun,Shen Xianfeng,Jiang Yunci. Overlaying Welding Layer and Matrix Analysis and Detection of Stellite Shell Lead Off[J]. Energy Technology, 2014, 0(1): 110-112 |
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| Authors: | Yu Gang Lu Yun Shen Xianfeng Jiang Yunci |
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| Affiliation: | 1. Shanghai Pudong New Area Special Equipment Supervision and Inspection Institute, Shanghai 200135, China; 2. Electric Power Research Institute, SMEPC, State Grid, Shanghai 200437, China; 3. Shanghai Waigaoqiao No 2 power generation Co. ,Ltd. , Shanghai 200137, China; 4. Shanghai Junxiang Detection Technology Engineering Company, Shanghai 200942, China) |
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| Abstract: | With the wide application of supereritical, ultra supercritieal coal-fired units, power generation e quipment ＂familial＂ defects resulting, overlaying welding layer and matrix shelling defect causes the Stellite shedding is an example. The stellite are hard alloy abrasion resistant, resistant to corrosion and high tempera ture oxidation. The supereritical, ultra supercritical coal-fired unit main steam valve, valve surfacing layer, working principle, using ultrasonic testing technique, testing instrument and testing qualification require ments. Through the case analysis, the main reason of stellite welding layer and matrix ＂shelling＂ and the eval uation results, to further understand and track the stellite surfacing layer and crack ＂shelling＂ defect, provide preventive measures and technical support. |
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| Keywords: | Ultrasonic testing Stellite Surfacing layer Evaluations Analysis |
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