标准编号:	NB/T 47018.3-2017
中文名称:	承压设备用焊接材料订货技术条件 第3部分：气体保护电弧焊丝和填充丝
英文名称:	Technical permission of welding materials for pressure equipment Section 3:Steel electrodes and rods for gas shielded arc welding
中标分类:	J33    焊接与切割
行业分类:	NB    能源行业标准
ICS分类:	25.160.10 25.160.10    焊接工艺 25.160.10
发布机构:	国家能源局
发布日期:	2017-03-28
实施日期:	2017-8-1
标准状态:	valid
替代旧标准:	NB/T 47018.3-2011 承压设备用焊接材料订货技术条件 第3部分：气体保护电弧焊钢焊丝和填充丝
翻译语言:	英文
文件格式:	PDF
中文字符数:	12000 字
翻译价格(元):	1110.0
交付时间:	付款后 1 个工作日

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. NB/T 47018-2017 consists of the following five sections under the general title Technical permission of welding materials for pressure equipment: ——Section 1: General rule; ——Section 2: Electrodes for steel; ——Section 3: Steel electrodes and rods for gas shielded arc welding; ——Section 4: Electrodes and fluxes for submerged arc welding; ——Section 5: Stainless steel strip electrodes and fluxes for overlay welding. This is Section 3 of NB/T 47018-2017. This section is developed in accordance with the rules given in GB/T 1.1-2009 Directives for standardization - Part 1: Structure and drafting of standards. This section is a revision of NB/T 47018.3-2011 Technical permission of welding materials for pressure equipment - Section 3: Steel electrodes and rods for gas shielded arc welding. The following main technical changes have been made with respect to NB/T 47018.3-2011: ——GB/T 25774.1, GB/T 29713, YB/T 5092 and AWS A5.9 are added in the “Normative references”; ——Another 33 electrode codes are added, including 11 codes of carbon steel and low-alloy steel electrodes: ER50-3, ER50-G, ER60-G, ER49-A1, ER55-B6, ER55-D2-Ti, ER55-D2 ER55-G, ER62-D2, ER60-G and ER62-G; and 22 codes of stainless steel electrodes: S308, S308H, S308L, S308LSi, S309, S309L, S309LSi, S309Mo, S309LMo, S310, S316, S316H, S316L, S316LSi, S317 , S317L, S318, S321, S347, S410, S430 and S2209; ——The sulfur and phosphorus content values of some of the original low-alloy steel electrodes and rods are modified, and those of the newly added electrode models are specified; ——The impact test requirements for the deposited metal of original electrode and rod models are adjusted, and those for the newly added low-alloy steel electrodes and rods are supplemented; ——The tensile test requirements for deposited metal of electrodes and rods are added; ——Transverse bending specimen is allowed in bend test, and the requirement that retest is allowed after increasing bending center diameter is added; ——The determination methods (mercury method or thermal conductivity method) and acceptance criteria for the diffusible hydrogen content in deposited metal are re-specified; ——Annex A - “A comparison of stainless steel electrode models, and domestic and foreign designations and categories” and Annex B - “Tensile properties of the deposited metal of stainless steel electrodes and rods” are added. This section 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 previous edition of this section is as follows: ——NB/T 47018.3-2011. Technical permission of welding materials for pressure equipment Section 3: Steel electrodes and rods for gas shielded arc welding 1 Scope This section of NB/T 47018-2017 specifies the technical requirements, mechanical property and bend tests of deposited metal, and product identification of steel electrodes and rods for gas shielded arc welding. This section is applicable to carbon steel, low-alloy steel and stainless steel electrodes and rods for gas shielded arc welding of pressure equipment. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2653 Bend test methods on welded joints GB/T 8110 Welding electrodes and rods for gas shielding arc welding of carbon and low alloy steel GB/T 25774.1 Test methods for welding consumables - Part 1: Preparation and testing of deposited metal specimens for mechanical properties in steel, nickel and nickel alloys GB/T 29713 Wire electrodes, strip electrodes, wires and rods for arc welding of stainless and heat resisting steels NB/T 47013.2 Nondestructive testing of pressure equipment - Part 2: Radiographic testing NB/T 47014 Welding procedure qualification for pressure equipment NB/T 47018.1 Technical permission of welding materials for pressure equipment - Part 1: General rule YB/T 5092 Stainless steel wires for welding AWS A5.9/A5.9M:2006 Specification for bare stainless steel welding electrodes and rods 3 Technical requirements 3.1 General a) In addition to the requirements of GB/T 8110, the carbon steel and low-alloy steel electrodes and rods for gas shielded arc welding of pressure equipment shall also meet the requirements of NB/T 47018.1 and this section; b) In addition to the requirements of GB/T 29713, the stainless steel electrodes and rods for gas shielded arc welding of pressure equipment shall also meet the requirements of YB/T 5092, NB/T 47018.1 and this section; c) See Annex A for the comparison of the stainless steel electrodes models in this section and the domestic and foreign designations and categories. 3.2 Roundness of electrodes The out-of-roundness of the electrodes shall not be greater than 40% of the diameter tolerance, but 5% of the tested electrodes are allowed to have an out of roundness greater than 40% of the diameter tolerance but not greater than 50% of it. 3.3 Chemical composition of electrodes See Table 1 for the requirements for sulfur and phosphorus contents in deposited metal of steel electrodes and rods for gas shielded arc welding of pressure equipment.   Table 1 Requirements for sulfur and phosphorus contents in deposited metal of steel electrodes and rods for gas shielded arc welding of pressure equipment 3.4 Mechanical property and bend tests of deposited metal 3.4.1 The percentage elongation after fracture of the tensile specimen for deposited metal of steel electrodes and rods for gas shielded arc welding of pressure equipment shall meet the requirements of GB/T 8110 and shall not be less than 18%. See Annex B for the reference values of the tensile properties of deposited metal of stainless steel electrodes and rods. 3.4.2 See Table 2 for the impact test requirements for deposited metal of steel electrodes and rods for gas shielded arc welding of pressure equipment. The mean value of the impact test results shall not be less than those specified in Table 2, the impact test result of only one specimen is allowed to be less than the specified value but shall not be less than 70% of the latter.

Foreword II 1 Scope 2 Normative references 3 Technical requirements 4 Mechanical property and bend tests of deposited metal 5 Product Identification Annex A (Informative) A comparison of stainless steel electrode models, and domestic and foreign designations and categories Annex B (Informative) Tensile properties of the deposited metal of stainless steel electrodes and rods

ICS 25.160.10 J 33 中华人民共和国能源行业标准 NB/T 47018.3—2017 代替NB/T 47018.3—2011 承压设备用焊接材料订货技术条件 第3部分：气体保护电弧焊 钢焊丝和填充丝 Technical permission of welding materials for pressure equipment Section 3：Steel electrodes and rods for gas shielded arc welding 2017—03—28发布 2017—08—01实施 国家能源局 发布 前言 NB/T 47018—2017《承压设备用焊接材料订货技术条件》分为5个部分： ——第1部分：采购通则； ——第2部分：钢焊条； ——第3部分：气体保护电弧焊钢焊丝和填充丝； ——第4部分：埋弧焊钢焊丝和焊剂； ——第5部分：堆焊用不锈钢焊带和焊剂。 本部分是NB/T 47018—2017的第3部分。 本部分按GB/T 1.1—2009《标准化工作导则 第1部分：标准的结构和编写》给出的规则起草。 本部分是对NB/T47018.3—2011《承压设备用焊接材料订货技术条件 第3部分：气体保护电弧焊钢焊丝和填充丝》的修订。与NB/T 47018.3—2011相比，主要技术变化如下： ——规范性引用文件中增加了GB/T 25774.1、GB/T 29713、YB/T 5092、AWS A5.9： ——焊丝代号增加了33个，其中碳钢、低合金钢焊丝11个：ER50-3、ER50-G、ER60-G、ER49-A1、ER55-B6、ER55-D2-Ti、ER55-D2、ER55-G、ER62-D2、ER60-G、ER62-G；不锈钢焊丝22个：S308、S308H、S308L、S308LSi、S309、S309L、S309LSi、S309Mo、S309LMo、S310、S316、S316H、S316L、S316LSi、S317、S317L、S318、S321、S347、S410、S430、S2209； ——修改了部分原低合金钢焊丝和填充丝的硫、磷含量，并给新增加焊丝型号规定了硫、磷含量； ——调整了原型号焊丝和填充丝熔敷金属冲击试验规定，补充了新增加低合金钢焊丝和填充丝的冲击试验规定； ——增加了焊丝和填充丝熔敷金属拉伸试验规定； ——在弯曲试验中允许使用横向弯曲试样，增加了允许加大弯心直径重新进行试验的规定； ——重新规定了熔敷金属扩散氢含量测量方法(水银法或热导法)及其合格指标； ——增加了附录A“不锈钢焊丝型号与国内外牌号、类别对照”、附录B“不锈钢焊丝和填充丝熔敷金属拉伸性能”。 本部分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。 NB/T 47018—2017的本部分所代替标准的历次版本发布情况为： ——NB/T 47018.3—2011。 承压设备用焊接材料订货技术条件 第3部分：气体保护电弧焊钢焊丝和填充丝 1 范围 NB/T 47018—2017的本部分规定了气体保护电弧焊用钢焊丝和填充丝的技术要求、熔敷金属力学性能和弯曲试验、产品标识。 本部分适用于承压设备用气体保护电弧焊碳钢焊丝和填充丝、低合金钢焊丝和填充丝、不锈钢焊丝和填充丝。 2规范性引用文件 下列文件对于本件的应用是必不可少的。凡是日期的引用文件，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 2653 焊接接头弯曲试验方法 GB/T 8110 气体保护电弧焊用碳钢、低合金钢焊丝 GB/T 25774.1 焊接材料的检验 第1部分：钢、镍及镍合金熔敷金属力学性能试样的制备及检验 GB/T 29713 不锈钢焊丝和焊带 NB/T 47013.2 承压设备无损检测 第2部分：射线检测 NB/T 47014 承压设备焊接工艺评定 NB/T 47018.1 承压设备用焊接材料订货技术条件 第1部分：采购通则 YB/T 5092 焊接用不锈钢丝 AWS A5.9/A5.9M：2006 不锈钢光焊丝和填充丝(specification for bare stainless steel welding electrodes and rods) 3 技术要求 3.1通用规定 a)承压设备气体保护焊用碳钢、低合金钢焊丝和填充丝除应符合GB/T 8110的规定外，还应符合NB/T 47018.1和本部分的规定； b)承压设备气体保护焊用不锈钢焊丝和填充丝除应符合GB/T 29713的规定外，还应符合YB/T 5092、NB/T 47018.1和本部分的规定； c)本部分不锈钢焊丝型号与国内外牌号、类型号对照参见附录A。 3.2焊丝的圆度 焊丝的不圆度应不大于直径公差的40％，但允许5％的受检焊丝的不圆度大于直径公差的40％，但不应大于直径公差的50％。 3.3焊丝的化学成分 承压设备气体保护电弧焊用钢焊丝和填充丝的硫、磷含量规定见表1。   表1 承压设备用气体保护电弧焊钢焊丝和填充丝硫、磷含量规定 焊丝代号(型号、牌号) S(质量分数)/％ P(质量分数)/％ 3.4熔敷金属力学性能和弯曲性能 3.4.1 承压设备用碳钢、低合金钢气体保护电弧焊焊丝和填充丝熔敷金属的拉伸试样断后伸长率应符合GB/T 8110规定，且不小于18％。不锈钢焊丝和填充丝熔敷金属拉伸性能参考值见附录B。 3.4.2承压设备气体保护电弧焊用钢焊丝和填充丝熔敷金属冲击试验规定见表2。冲击试验结果平均值应不小于表2的规定，允许其中1个试样的冲击试验结果低于规定值，但应不小于规定值的70％。 表2 承压设备气体保护电弧焊焊丝和填充丝熔敷金属冲击试验规定 焊丝类别 焊丝型号 试验温度/℃ 冲击吸收功KV2/J 碳钢、低合金钢焊丝 (GB/T 8110) 3.4.3弯曲试样弯曲到表3规定的角度后，其拉伸面上的熔敷金属内沿任何方向不应有单条长度大于3mm的开口缺陷；试样熔敷金属的棱角开口缺陷可不计，但由未熔合、夹渣或其他内部缺欠引起的棱角开口缺陷长度应计入。 对于断后伸长率A标准规定值下限小于20％的熔敷金属，若按表3规定的弯曲试验不合格，而其实测值小于20％，则允许加大弯心直径重新进行试验。此时弯心直径等于 (A为断后伸长率规定值下限乘以100)，支座间距等于弯心直径加23mm。 表3 弯曲试验尺寸规定 试样厚度/mm 弯心直径/mm 支座间距离/mm 弯曲角度/(°) 10 40 63 180 3.5熔敷金属扩散氢含量 熔敷金属扩散氢含量应符合表4的规定。 表4 熔敷金属扩散氢含量 焊丝型号 扩散氢含量/(mL/100g)(水银法或热导法) ER49-1、ER 50-× ≤7 ER 55-×× ≤6 ER 60-××、ER 62-×× ≤5 3.6熔敷金属射线检测 熔敷金属射线检测按NB/T 47013.2进行，射线检测技术应不低于AB级，质量等级应为I级。 4熔敷金属力学性能和弯曲试验 4.1试件制备 碳钢、低合金钢焊丝、填充丝试件按GB/T 8110规定制备。不锈钢焊丝、填充丝试件按GB/T 25774.1规定制备，采用试件类型1.2或1.3。在确保熔敷金属不受母材影响下，也可以采用其他方法，但仲裁试验时，应按GB/T 25774.1要求制备试件。 4.2 试样制备 a)采用冷加工法或热加工法切取试样。当采用热切割法时，应用冷加工法去除热影响区； b)焊缝余高及垫板应采用机械方法去除，允许避开焊接缺陷、缺欠制取试样； c)试样数量见表5，弯曲试样的位置见图1，纵向弯曲试样尺寸见图2，或在相同位置取横向弯曲试样，试样尺寸按NB/T 47014的相关规定； d)弯曲试样的受拉面应齐平，制备面弯(背弯)试样时，应从背面(正面)加工去除多余厚度，试样的受拉面尽量靠近试件表面。 表5 熔敷金属力学性能和弯曲试样标准及数量 焊丝和填充丝的钢材类别 拉伸试样 冲击试样 弯曲试样 碳钢、低合金钢 GB/T 8110,1个 GB/T 8110,3个 本标准，2个(背弯和面弯各1个) 不锈钢 GB/T 25774.1,1个 — 4.3试验方法 弯曲试验应符合表3及GB/T 2653的规定。 面弯试样 背弯试样 图1 弯曲试位置图 注：试样受拉面棱角R≤3。 图2 纵向弯曲试样尺寸 5产品标识 按本部分规定制造的焊丝(填充丝)的内外包装、说明书以及质量证明书上应标有“承压设备用气体保护焊钢焊丝(填充丝)”字样和产品标识“NB/T 47018”，其内包装标签也应印有产品标识。 附 录 A (资料性附录) 不锈钢焊丝型号与国内外牌号、类别对照 不锈钢焊丝型号与国内外牌号、类别对照见表A.1。   表A.1 本标准不锈钢焊丝型号与国内外牌号、类别对照表 本标准 YB/T 5092 AWS A5.9/A5.9M：2006 附 录 B (资料性附录) 不锈钢焊丝和填充丝熔敷金属拉伸性能 不锈钢焊丝和填充丝熔敷金属拉伸性能参考值见表B.1。   表B.1 不锈钢焊丝和填充丝熔敷金属拉伸性能参考值 焊丝型号 抗拉强度Rm/MPa 断后伸长率A/％ 注：表中单值均为最小值。