汽轮机铸件汽缸疏松缺陷超声波检测研究

 陈辉1,朱易坤1,周林娟1,邹志明2

(1.东方电气集团东方汽轮机有限公司,四川 德阳 618000;2.成都仪器厂,四川 成都 610000)
摘要:分析了铸件汽缸的缺陷中结构松散类似针型海绵团状的疏松缺陷对工件性能和后期加工的影响,详细介绍了汽轮机铸件汽缸超声波检测方法,介绍了超声波检测仪器、探头和检测用试块的选择,介绍不同探头检测灵敏度设置方法,分析了铸件疏松波形的判定和测试,通过疏松缺陷的解剖验证了其超声波缺陷波形特征与实物的相符性,最终确定铸件疏松缺陷超声波检测控制方法。
关键词:铸件汽缸;疏松缺陷;超声波检测
中图分类号:TV698.1+5 文献标志码:A doi:10.3969/j.issn.1006-0316.2018.10.017
文章编号:1006-0316 (2018) 10-0077-04
Research on Ultrasonic Inspection of Turbine Cylinder Porosity Defects
CHEN Hui,ZHU Yikun,ZHOU Linjuan,ZOU Zhiming
( 1.DEC DongFang Turbine Co., Ltd., Deyang 618000, China; 2.Chengdu Instrument Factory, Chengdu 610000, China )
Abstract:In this paper, the influence of loosely structured looseness similar to needle-shaped sponge mass on workpiece performance and post-processing is analyzed. The ultrasonic testing method of steam turbine casting cylinder is introduced in detail. The selection of ultrasonic testing instrument, probe and test block is introduced. The setting method of sensitivity of different probes is introduced. The determination and test of the loose waveforms of the castings are analyzed. Through the analysis of the looseness defect, the waveform characteristics of the ultrasonic defect are verified to be consistent with the real object. Finally, the ultrasonic detection and control method of the casting looseness defect is determined.
Key words:casting cylinder;porosity defect;ultrasonic testing
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收稿日期:2018-07-03
作者简介:陈辉(1966-),男,四川蓬溪人,高级工程师,主要从事无损检测工作;朱易坤(1988-),男,四川绵竹人,工程师,主要从事无损检测工作;周林娟(1985-),女,四川成都人,技师,主要从事无损检测工作;邹志明(1963-),男,四川邻水人,工程师,主要从事无损检测及真空检测仪器研发工作。
 

 

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