Brazing - Imperfections in brazed joints (ISO 18279:2023)
钎焊钎焊接头中的缺陷
发布日期:
2023-11-22
实施日期:
2023-11-22
ISO 18279:2003详细说明了钎焊接头中可能出现的缺陷分类。此外,还提供了关于质量水平的指导,并详细说明了缺陷的建议限制。
对于本标准未涵盖的要求,应参考其他来源,例如法定法规、实施规程和技术交付条件。
没有提供在个别情况下如何评估缺陷的信息,因为这取决于特定钎焊接头的要求。仅使用无损检测并不总能检测到这些缺陷。
本标准仅涵盖钎焊时可能出现的缺陷,而不受任何额外工作载荷的影响。
仅涵盖此类缺陷的类型、形状和位置;没有说明发生的条件或原因。
对于与部件特定功能相关且至关重要的钎焊接头要求,应参考相关文件,例如制造文件或程序表。
本国际标准没有规定缺陷验收水平的要求,因为根据应用不同,这些要求会有很大差异,但它确实建议了一些质量水平,在缺乏更详细信息的情况下,这些质量水平可能有价值。
This document details a classification of imperfections that can occur in brazing joints. In addition, guidance is provided on quality levels and suggested limits for imperfections are detailed.
For requirements not covered by this document, reference can be made to other sources, such as statutory regulations, codes of practice and technical delivery conditions.
No information is given on how imperfections are to be assessed in individual cases because this depends on the requirements for the particular brazed joint. These imperfections are not always detectable by the use of non-destructive testing alone.
This document covers only imperfections that can occur in connection with brazing without the effect of any additional service loads. Only the type, shape and position of such imperfections are covered; no indication is given of the conditions of occurrence or causes.
For requirements for brazed joints which are relevant and essential to the particular function of the component, reference can be made to the relevant documentation, for example manufacturing documents or procedure sheets.
It is important that these requirements be precisely prescribed and that conformity with them be verifiable. Conformity can be established by testing either the brazed assembly itself or a test piece produced under comparable conditions.
This document does not specify requirements for acceptance levels for imperfections, since these will differ very markedly depending on the application, but it does suggest some quality levels which can be of value in the absence of more detailed information.