ISO 18279:2023 硬钎焊 硬钎焊接头缺欠

标准编号：ISO 18279:2023

中文名称：硬钎焊 硬钎焊接头缺欠

英文名称：Brazing — Imperfections in brazed joints

发布日期：2023-11

标准范围

本文件详细描述了钎焊接头中可能出现的缺陷的分类。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。对于本文件未涵盖的要求，可以参考其他来源，如法定法规、实践规范和技术交付条件。没有给出关于如何在个别情况下评估缺陷的信息，因为这取决于特定钎焊接头的要求。这些缺陷并不总是通过单独使用无损检测来检测。本文件仅涵盖与钎焊相关而不受任何额外服务载荷影响的缺陷。仅涵盖此类缺陷的类型、形状和位置；没有给出发生条件或原因的指示。对于与部件的特定功能相关且必不可少的钎焊接头的要求，可以参考相关文件，例如制造文件或程序表。重要的是，这些要求必须精确规定，并且符合这些要求是可验证的。可以通过测试钎焊组件本身或在可比条件下生产的测试件来确定符合性。本文档没有规定缺陷验收水平的要求，因为这些要求会因应用而有很大差异，但它确实提出了一些在缺乏更详细信息的情况下可能有价值的质量水平。

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.

标准预览图