GB/T 7216-2023《灰铸铁金相检验》标准解读  

Interpretation of standard GB/T 7216-2023 Metallographic test for gray cast iron

作　　者：张振威 马裕辰 赵洁[1] 蒋锐 陈敏[1] 李爽 李曙 Zhang Zhenwei;Ma Yuchen;Zhao Jie;Jiang Rui;Chen Min;Li Shuang;Li Shu(Ningbo Branch of Chinese Academy of Ordnance Science,Ningbo Zhejiang 315103,China;Chang'an Dublin International College ofTransportation at Chang'an University,Chang'an University,Xi'an Shaanxi 710064,China;Zhenhai Branch of Ningbo Municipal Bureau of Ecology and Environment,Ningbo Zhejiang 315200,China)

机构地区：[1]中国兵器科学研究院宁波分院,浙江宁波315103 [2]长安大学长安都柏林国际交通学院,陕西西安710064 [3]宁波市生态环境局镇海分局,浙江宁波315200

出　　处：《金属热处理》2025年第4期323-329,共7页Heat Treatment of Metals

基　　金：中国兵器科学研究院宁波分院基金(NBF 2023-14)。

摘　　要：在与GB/T 7216-2009对比的基础上,从标准适用范围、术语和定义、检测项目和评级图谱及结果表示方面对GB/T 7216-2023进行了解读。GB/T 7216-2023中更改了标准的适用范围及各种组织类型的测量方法和参照图谱;增加了术语和定义、石墨含量计算方法和石墨形状长度表述示例;附录部分增加了与ISO 945-1:2019的对比情况及典型片状石墨分布形态和石墨类型图像分析识别方法。Based on comparison with GB/T 7216-2009,GB/T 7216-2023 was interpreted from standard application scope,terms and definitions,inspection items,rating images,and result representation.In GB/T 7216-2023,the application scope of the standard,the measurement methods and reference images for various types of microstructure are changed.Terms and definitions,the calculation method of graphite content,and examples of graphite shape length expressions are added.In the appendix part,the comparison with ISO 945-1:2019,the typical flake graphite distribution patterns,and image analysis identification methods for graphite types are added.

关 键 词：灰铸铁 片状石墨 碳化物 磷共晶 共晶团数量 

分 类 号：TG251[金属学及工艺—铸造] N65[自然科学总论]