• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Thermal engineering >Restoration of metal properties of circulation pump blades by the method of surface ultrasonic impact treatment
【24h】

Restoration of metal properties of circulation pump blades by the method of surface ultrasonic impact treatment

机译：表面超声冲击处理方法恢复循环泵叶片金属性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

During the transition period to a market economy, the works producing equipment for the nuclear industry became lame duck companies. The market of heavy industry equipment reduced dramatically, and quality control requirements imposed to goods became lower. Deviations from regulations' requirements and technical specifications for equipment manufacture results in inevitable decrease of reliability during operation but also to failure during check tests. It is not always possible to replace promptly ill-conditioned equipment; in such cases, it is necessary to carry out compensatory measures for restoring working properties up to an acceptable level in order to ensure operational reliability due to the strength improvement of the components of machines and constructions during the whole service life or up to the scheduled date of equipment replacement. This paper is dedicated to development and practical implementation of restorative technology of strengthening ultrasonic treatment used for the metal of the blades of impellers of 16DPA10-28 circulation pumps of 10URS unit pump station located at Novovoronezh NPP-2. The dynamic surface treatment was implemented for compensating the technological defects of the metal of blades. It was revealed that the impact elastic-plastic deformation has a comprehensive compensation effect on the metal of blades in the initial state of delivery and creates the surface-strengthening layer with higher strength properties (strain hardening) of the depth up to 1.5 mm. The surface strain hardening increases the cyclic strength, re-distributes beneficially the residual technological and repair stresses, and heals small surface cracks improving the surface quality. The developed technology was used for treatment of 32 blades of impellers of 10PAC01AP001, 10PAC02AP001, 10PAC03AP001, 10PAC04AP001 circulation pumps. The implemented 100-h full-scale test of the pumps revealed the high efficiency of the developed technology and made it possible to recommend it for application at both the stage of blade manufacture and during the pump operation for prolongation of their service life.
机译：在向市场经济过渡的时期，为核工业生产设备的工厂成为la脚的鸭子公司。重工业设备市场急剧减少，对商品的质量控制要求降低。违反设备制造的法规要求和技术规范会不可避免地降低运行中的可靠性，但也会导致检查测试中的故障。并非总是可以更换病急的设备。在这种情况下，有必要采取补偿措施将工作性能恢复到可接受的水平，以确保由于在整个使用寿命内或直到预定日期的机械和结构部件的强度提高而确保运行可靠性。设备更换。本文致力于对位于Novovoronezh NPP-2的10URS单元泵站的16DPA10-28循环泵的叶轮金属进行强化超声处理的修复技术的开发和实际应用。进行动态表面处理以补偿叶片金属的技术缺陷。结果表明，冲击弹塑性变形在初始交付状态下对叶片金属具有全面的补偿作用，并产生了具有高达1.5 mm深度的更高强度特性（应变硬化）的表面强化层。表面应变硬化可提高循环强度，有益地重新分布残余的工艺应力和修复应力，并修复小的表面裂纹，从而改善表面质量。所开发的技术用于处理10PAC01AP001、10PAC02AP001、10PAC03AP001、10PAC04AP001循环泵的叶轮的32个叶片。对泵执行的100小时全尺寸测试表明，该开发技术的效率很高，因此有可能将其推荐用于叶片制造阶段和泵运行期间，以延长其使用寿命。

著录项

  • 来源
    《Thermal engineering》 |2017年第10期|762-769|共8页
  • 作者

    Povarov V. P.; Urazov O. V.; Bakirov Murat B.; Pakhomov S. S.; Belunik I. A.;

  • 作者单位

    AO Rosenergoatom Concern, Novovoronezh NPP, Novovoronezh, Voronezh oblast, Russian Federation;

    AO Rosenergoatom Concern, Novovoronezh NPP, Novovoronezh, Voronezh oblast, Russian Federation;

    Scientific-Certification Educational Center of Material Science and Lifetime of Nuclear Plant Components, Zhukovski, Moscow oblast, Russian Federation;

    Scientific-Certification Educational Center of Material Science and Lifetime of Nuclear Plant Components, Zhukovski, Moscow oblast, Russian Federation;

    Scientific-Certification Educational Center of Material Science and Lifetime of Nuclear Plant Components, Zhukovski, Moscow oblast, Russian Federation;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    circulating pump; plastic deformation; residual weld stresses; surface defect; ultrasonic impact treatment;

    机译：循环泵塑性变形;残余焊接应力;表面缺陷超声波冲击处理;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号