標準編號:	GB 222-1984
中文名稱:	鋼的化學分析用試樣取樣法及成品化學成分允許偏差
英文名稱:	Method of sampling steel for determination of chemical composition and permissible variations for product analysis
中標分類:	H11    鋼鐵與鐵合金分析方法
行業(yè)分類:	GB    國家標準
ICS分類:	77.080.20 77.080.20    鋼 77.080.20
發(fā)布機構:	中國鋼鐵工業(yè)協(xié)會
發(fā)布日期:	1983-12-08
實施日期:	1984-12-7
標準狀態(tài):	superseded
被新標準替代:	GB/T 222-2006 鋼的成品化學成分允許偏差 GB/T 20066-2006 鋼和鐵化學成分測定用試樣的取樣和制樣方法
被替代日期:	2006-8-1
替代舊標準:	GB 222-1963
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	6000 字
翻譯價格(元):	200.0
交付時間:	付款后 1 個工作日

1 Terms 1.1 Melting analysis Melting analysis refers to taking sample ingot during pouring molten steel and then making it into sample for chemical analysis. The analysis result represents the average chemical composition of the same furnace or tank of molten steel. 1.2 Product analysis Product analysis refers to taking sample from the processed finished steel (including steel billet) for chemical analysis. Product analysis is mainly used for checking the chemical composition, so it is also known as check analysis. As a result of uneven distribution (segregation) of element produced in the crystallization process of molten steel, the value of product analysis is different from that of melting analysis. 1.3 Permissible variation for product analysis Permissible variation for product analysis refers to that the value of melting analysis is within the standard scope but the value of product analysis may beyond the standard composition scope due to the element segregation in steel. A specified permissible value beyond this scope is namely the permissible variation for product analysis. 2 Sampling General