摘要
针对国内外换热管与管板焊接工艺评定常用的4个标准(NB/T 47014-2011、ISO 15614-8:2016、ASME BPVC-IX:2019和RCC-M S3000:2007),对其适用范围、试件形式、评定变素和验收准则等方面的异同进行了系统分析。结果表明,ISO 15614-8:2016标准几乎覆盖了各个领域的焊接工艺评定,且是唯一将管子排布方式进行区分评定的标准,其他3个焊接工艺评定标准只强调了焊接接头数量。ISO 15614-8:2016标准和RCC-M S3000:2007标准将管子-管板的间隙结构和胀接过程作为重要变素,而NB/T 47014-2011标准和ASME BPVC-IX:2019标准均未对管子-管板的配合间隙提出要求。4个焊接工艺评定标准均对外观检测、渗透检测及宏观金相作了近似要求,ISO 15614-8:2016标准对检验要求控制更为严格。通过分析几个标准的差异性及适用情况,为今后换热管与管板的焊接工艺评定提供了一定的理论指导和技术参考。
In view of the four commonly used standards(NB/T 47014-2011, ISO 15614-8:2016, ASME BPVC-IX:2019 and RCC-M S3000:2007) for welding procedure qualification of heat transfer tube and tube sheet at home and abroad, the similarities and differences of their applicable scopes, specimen forms, qualification variables and acceptance criteria are systematically analyzed. The results show that the ISO 15614-8:2016 covers almost every field of welding procedure qualification and is the only standard to distinguish the arrangement of tube sheet. The other three standards only emphasize the number of welded joints. For the ISO 15614-8:2016 and RCC-M S3000:2007, the interstitial structure and expanding process of tube and tube sheet are considered as important variables. However, the fit clearances of tube and tube sheet are not required for the ASME BPVC-IX:2019 and the NB/T 47014-2011. The four standards all have similar requirements for the visual tests,penetrant tests and macro metallographs. Also, only the ISO 15614-8:2016 requires more stringent inspection. By analyzing the difference and application of these standards, it provides the theoretical guidance and technical reference for the welding procedure qualification of heat transfer tube and tube sheet in the future.
作者
唐丽
李东
康文捷
姚宗湘
TANG Li;LI Dong;KANG Wenjie;YAO Zongxiang(Chongqing ChuanYi Instrument No.17 Factory Co.,Ltd.,Chongqing 400707,China;Sandvik International Trading(Shanghai)Co.,Ltd.,Shanghai 201108,China;School of Metallurgy and Materials Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)
出处
《电焊机》
2022年第8期113-118,共6页
Electric Welding Machine
关键词
换热管
管板
标准
焊接工艺评定
heat transfer tube
tube sheet
standard
welding procedure qualification
