熔模铸造工艺　污染物的控制 Investment casting process—Pollutants control  ICS  77.140.80 CCS  J 31   中华人民共和国国家标准 GB/T 32251—2024 代替 GB/T 32251—2015 2024-08-2 3发布 2024-08-2 3实施     国家市场监督管理总局 国家标准化管理委员会 发 布 目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   2 4     污染物种类及排放限值   ···············································································   2 5     污染物监控要求   ······················································································   4 6     污染物监测采样与检测方法   ··········································································   4      6.1     污染物监测采样   ·················································································   4      6.2     检测方法   ·························································································   4 7     污染物防护措施   ······················································································   5      7.1     蜡模制备过程污染物防护措施   ···································································   5      7.2     型壳（型芯）制备过程污染物防护措施   ·························································   5      7.3     熔炼与浇注过程污染物防护措施   ································································   6      7.4     清理与修整过程污染物防护措施   ································································   6      7.5     铸件质量检测过程污染物防护措施   ······························································   6 GB/T 32251—2024     Ⅰ