Foreword
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This Standard is developed with reference to American standard ASME SB-247 (2010 edition). Five designations of aluminum and aluminum alloy forgings are included in this Standard in consideration of the production and application in China.
This standard was proposed by and is under the jurisdiction of the National Technical Committee on Boilers and Pressure Vessels of Standardization Administration of China (SAC/TC 262).
The National Technical Committee on Boilers and Pressure Vessels of Standardization Administration of China (SAC/TC 262) is responsible for the interpretation of the Standard.
Aluminium and aluminium alloy forgings for pressure vessels
1 Scope
This standard specifies the technical requirements, test methods and inspection rules of aluminium and aluminium alloy forgings (including hand forgings and die forgings).
This standard is applicable to aluminium and aluminium alloy forgings with a design pressure not greater than 10.0Mpa used for pressure vessels.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 3190 Wrought aluminium and aluminium alloy - Chemical composition
GB/T 3199 Wrought aluminium and aluminium alloy products - Packing marking transporting and storing
GB/T 20975 (all parts) Methods for chemical analysis of aluminium and aluminium alloys
JB/T 4730.5 Nondestructive testing of pressure equipment - Part 5: Penetrant testing
3 Terms and Definitions
For the purposes of this Standard, the following terms and definitions apply.
3.1 ring forging
axisymmetric hollow forging with an axial length (L) less than or equal to its outer diameter (D), as shown in Figure 1a), where the smaller of L and t is measured according to the nominal thickness.
3.2 disk forging
axisymmetric solid forging with an axial length (L) less than or equal to its outer diameter (D), as shown in Figure 1b), where L is measured according to the nominal thickness.
3.3 neck flange forging
axisymmetric hollow forging with two outer diameters in the axial direction, as shown in Figure 1c), where the larger of t1 and t2 is measured according to the nominal thickness.
3.4 bar forging
solid forging with a circular cross section and an axial length (L) greater than its outer diameter (D), as shown in Figure 1d), where D is measured according to the nominal thickness.
forging with a rectangular cross section and an axial length (L) greater than its lengths a and b, as shown in Figure 1e), the smaller of a and b is measured according to the nominal thickness.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Order information
5 Technical requirements
6 Test methods
7 Inspection rules
8 Packaging, marking and quality certificate
ICS 77.150.10
H 61
NB
中华人民共和国行业标准
NB／T 47029-2012
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压力容器用铝及铝合金锻件
Aluminium and aluminium alloy forgings for pressure vessels
（ASME SEC II B SB-247：2002，Specification for aluminum- alloy die and hand forgings, MOD）
2012-11-09发布 2013-03-01实施
国家能源局 发布
前言
本标准主要参照美国ASME（2010年版）SB-247标准制定。根据我国的生产和使用情况列入了5个牌号的铝及铝合金锻件。
本标准由全国锅炉压力容器标准化技术委员会（SAC／TC 262）提出并归口。
本标准由全国锅炉压力容器标准化技术委员会（SAC／TC 262）负责解释。
压力容器用铝及铝合金锻件
1 范围
本标准规定了压力容器用铝及铝合金锻件（包括自由锻件和模锻件）的技术要求、试验方法及检验规则等。
本标准适用于设计压力不大于16MPa的压力容器用铝及铝合金锻件。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本（ 包括所有的修改单）适用于本文件。
GB／T 228.1-2010 金属材料 拉伸试验 第1部分：室温试验方法
GB／T 3190 变形铝及铝合金化学成分
GB／T 3199 铝及铝合金加工产品包装、标志、运输、贮存
GB／T 20975（所有部分） 铝及铝合金化学分析方法
JB／T 4730.5 承压设备无损检测 第5部分：渗透检测
3 术语和定义
本标准采用下列术语和定义。
3.1 环形锻件 ring forging
轴向长度L小于或等于其外径D的轴对称空心锻件，如图1a）所示。L和t中的小者为公称厚度。
3.2 饼形锻件 disk forging
轴向长度L小于或等于其外径D的轴对称实心锻件，如图1b）所示。L为公称厚度。
3.3 长颈法兰锻件 neck flange forging
轴向有两个外径的轴对称空心锻件，如图1c）所示。t1和t2中的大者为公称厚度。
3.4 条形锻件 bar forging
横截面为圆形，轴向长度L大于其外径D的实心锻件，如图1 d）所示。D为公称厚度。
横截面为矩形，轴向长度L均大于其两边长a、b的锻件，如图1 e）所示。a和b中的小者为公称厚度。
