国家标准《4×××系铝合金圆铸锭》述评

Commentary on the national standard 4××× Aluminum Alloy Columiniform Ingots

介绍了国家标准GB/T 33911-2017《4×××系铝合金圆铸锭》的主要编制过程,详细阐述了对国内企业生产铸锭的氢含量、夹杂、气孔及初晶硅等主要技术指标的调研情况,并对调研数据进行了分析,确定最终的指标值。既保证了国内大部分企业的产品能够达到本标准制定的指标值,又能淘汰市场的低端产品,引领产业进步。同时对本标准和国外相关标准进行了标准水平对比分析,指出了本标准的预期推广效果。

As for the national standard GB/T 33911-2017 4×××Aluminum Alloy Columiniform Ingots the main establishment process has been introduced,the main technical indices(incl.hydrogen content,inclusions,porosity,and primary silicon,etc.)surveyed in domestic enterprises have been detailed,the survey data have been analyzed and the final indices determined.The indices set by this standard can cover the products of most domestic enterprises,eliminate low-end products in the market,and lead the industrial progress.The comparative analysis of standard level between this standard and foreign standards is carried out,and the expected promotion effect of this standard is pointed out.