焊工的认可试验 熔焊 第4部分:镍及镍合金

[中文适用范围]： 本标准规定了镍焊接焊工性能认可测试的基本要求、认可范围、试验条件、验收要求和认证。 本标准适用于镍熔焊焊工的认可测试。 本标准旨在为审查机构相互认可焊工在不同应用领域的能力提供基础。 除非相关应用标准在应用时规定了更严格的测试，否则将按照本标准进行测试。 在认可测试期间，应要求焊工表现出对其将被认可的焊接工艺、材料和安全要求的足够的实践经验和工作知识（测试非强制性）；有关这些方面的信息在附录 A 中给出。 当买方、检验机构或其他组织要求进行焊工认可测试时，本标准适用。 本标准所指的焊接工艺包括那些指定为手工或部分机械化焊接的熔焊工艺。 它不包括完全机械化和自动化的过程（见 5.2）。 本标准涵盖对由 5.4 中列出的锻造、锻造或铸造材料类型制成的半成品和成品进行焊工的认可测试。 批准测试证书由审查员或审查机构全权负责颁发。 [外文原描述]： This standard specifies essential requirements, ranges of approval, test conditions, acceptance requirements and certification for the approval testing of welder performance for the welding of nickel. This standard applies to the approval testing of welders for the fusion welding of nickel. This standard is intended to provide the basis for the mutual recognition by examining bodies for approval relating to welders' competence in the various fields of application. Tests will be carried out in accordance with this standard unless more severe tests are specified by the relevant application standard when these are applied. During the approval test the welder should be required to show adequate practical experience and job knowledge (test non mandatory) of the welding processes, materials and safety requirements for which he is to be approved; information on these aspects is given in Annex A. This standard is applicable when the welder's approval testing is required by the purchaser, by inspection authorities or by other organizations. The welding processes referred to in this standard include those fusion welding processes which are designated as manual or partly mechanized welding. It does not cover fully mechanized and automatic processes (see 5.2). This standard covers approval testing of welders for work on semi-finished and finished products made from wrought, forged or cast material types listed in 5.4. The certificate of approval testing is issued under the sole responsibility of the examiner or examining body.