金属材料焊接程序规范和鉴定.焊接程序试验.第7部分:覆盖焊接

[中文适用范围]： ISO 15614 的这一部分规定了如何通过焊接工艺测试来鉴定堆焊的初步焊接工艺规范。 ISO 15614 的这一部分定义了焊接工艺测试的执行条件以及在 和aase 8 中列出的变量范围内的所有实际焊接操作的焊接工艺资格范围。 ISO 15614 的这一部分适用于适合堆焊的所有焊接工艺。 在对预生产试件进行鉴定的情况下，鉴定是根据 ISO 15613 进行的，除非尽可能根据 ISO 15614 的本部分进行测试。 母体金属的组装和修复包括在ISO 15613 或 ISO 15614-1。 此版本的 ISO 15614-7 适用于所有新的焊接工艺资格测试。 它不会使先前根据本部分先前版本进行的焊接工艺试验无效。 附加试验应在根据现有 WPS 和本部分制成的试件上进行。 如果使用黄油焊在不同材料之间进行焊接，则焊接工艺符合 ISO 15614-1 标准。 对于组合不同材料结构或性能的焊接，例如将马氏体钢或铁素体钢与奥氏体钢连接，可能需要这种对接。 应用标准可能不需要额外的测试。 [外文原描述]： ISO 15614-7:2016 specifies how a preliminary welding procedure specification for overlay welding is qualified by welding procedure tests. ISO 15614-7:2016 defines the conditions for execution of welding procedure tests and the range of qualification for welding procedures for all practical welding operations within the range of variables listed in Clause 8. ISO 15614-7:2016 applies to all welding processes suitable for overlay welding. In situations where qualification is carried out on a pre-production test piece, the qualification is performed in accordance with ISO 15613 except that, as far as possible, the testing is according to this part of ISO 15614. Building up and repair of parent metal is covered by ISO 15613 or ISO 15614‑1. This edition of ISO 15614‑7 is applicable to all new welding procedure qualification tests. It does not invalidate previous welding procedure tests made in accordance with previous editions of this part of ISO 15614. Where additional tests are required by the present edition, it is only necessary that those additional tests be carried out on a test piece made in accordance with the existing WPS and this part of ISO 15614. If buttering is used for welding between dissimilar materials, the welding procedure is qualified in accordance with ISO 15614‑1. This buttering may be required for weld combining different material structure or properties, e.g. joining martensitic steels or ferritic steels with austenitic steels. Additional tests may be required by application standards.