GB/T 19938-2005无损检测　焊缝射线照相和底片观察条件　像质计推荐型式的使用.pdf

.. ... .. ICS 19.100 J 04 中 华 人 民 共 和 国 国 家 标 准 GB/T 19938-2005八SO 2504:1973 无损检测 焊缝射线照相和底片 观察条件 像质计推荐型式的使用 Non-destructive testing-Radiography of welds and viewing conditions for films-Utilization of recommended patterns of image quality indicators (ISO 2504:1973, Radiography of welds and viewing conditions for films-Utilization of recommended patterns of image quality indicators(I. Q. 1.)，IDT) 2005-09-19发布 2006-04-01实施 中华人民共和国国家质量监督检验检疫总局 发 布 中国国家标准化管理委员会 .. ... .. GB/T 19938-2005八SO 2504:1973 目 次 前言 ·······，，，，，，·······，，，，，，，·，··，··················································································…… 1 范围 ·，····，，，·，，，，，，，，，，，，·，，，，···························，·······，·，··················，······················，····…… 2规范性引用文件 ································································································…… 3像质计的位置 ，·····，··，·························································································…… 4像质计灵敏度(像质值)的确定···············……“““““““““‘”“‘””””””’““””””””’“““‘’‘ 5可接受的钢的像质值 ，·，·，····，，，，，，，，，，，，，，·，，，··，·，······················，··，，·····················，·…… “‘·““ 5.1要求值 ···。··············· ··，一·，·。，·，，，，，，·，·，，，，，，，，，，，，，，，，，，，，，··，，·········，，，···，··············，，，······…… 5. 2 容限 ········································，····，·····，，··，，··，·。。·。。··。·。·····，··，，，，，，，，，···，，，，