標(biāo)準(zhǔn)編號(hào):	NB/T 47018.4-2017
中文名稱(chēng):	承壓設(shè)備用焊接材料訂貨技術(shù)條件 第4部分：埋弧焊鋼焊絲和焊劑
英文名稱(chēng):	Technical permission of welding materials for pressure equipment Section 4:Electrodes and fluxes for submerged arc welding
行業(yè)分類(lèi):	NB    能源行業(yè)標(biāo)準(zhǔn)
發(fā)布機(jī)構(gòu):	國(guó)家能源局
發(fā)布日期:	2017-03-28
實(shí)施日期:	2017-8-1
標(biāo)準(zhǔn)狀態(tài):	superseded
被新標(biāo)準(zhǔn)替代:	NB/T 47018.4-2022 承壓設(shè)備用焊接材料訂貨技術(shù)條件 第4部分：埋弧焊鋼焊絲和焊劑
被替代日期:	2022-12-31
替代舊標(biāo)準(zhǔn):	NB/T 47018.4-2011 承壓設(shè)備用焊接材料訂貨技術(shù)條件 第4部分：埋弧焊鋼焊絲和焊劑
翻譯語(yǔ)言:	英文
文件格式:	PDF
中文字符數(shù):	9000 字
翻譯價(jià)格(元):	730.0
交付時(shí)間:	付款后 1 個(gè)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 4 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 47018.4-2011 Technical permission of welding materials for pressure equipment - Section 4: Electrodes and fluxes for submerged arc welding. The following main technical changes have been made with respect to NB/T 47018.4-2011: ——In the welding material quality certificate, the batch number and inspection requirements of fluxes and electrodes are added; ——Phosphorus and sulfur contents of electrodes and fluxes are specified; ——F310-H×××, F316CuL-H××× and F317-H××× are added in the stainless steel flux model; ——Lower limits of percentage elongation after fracture of deposited metal tensile specimen are added; ——Transverse bending specimen is allowed in bend test, and the provision that retest is allowed after increasing bending center diameter is added; ——Provisions on water content in the fluxes for carbon steel and low-alloy steel are added; determination for diffusible hydrogen content in SAW deposited metal is added; ——Annex A “Designation of commonly used electrodes and rods for submerged arc welding of pressure equipment” in the original standard is deleted. 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 of is as follows: ——NB/T 47018.4-2011. Technical permission of welding materials for pressure equipment - Section 4: Electrodes and fluxes for submerged arc welding 1 Scope This section of NB/T 47018-2017 specifies technical requirements, test methods and product identification of electrodes and fluxes for submerged arc welding. This section is applicable to carbon steel, low-alloy steel and stainless steel electrodes and fluxes for submerged 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 3965 Methods for determination of diffusible hydrogen in deposited metal GB/T 5293-1999 Carbon steel electrodes and fluxes for submerged arc welding GB/T 12470-2003 Low-alloy steel electrodes and fluxes for submerged arc welding GB/T 17854-1999 Stainless steel electrodes and fluxes for submerged arc welding 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 3 Technical requirements 3.1 General 3.1.1 In addition to those specified in GB/T 5293-1999, GB/T 12470-2003 and GB/T 17854-1999, electrodes and fluxes for carbon steel, low-alloy steel and stainless steel submerged arc welding of pressure equipment shall meet the requirements of NB/T 47018.1 and this section. 3.1.2 The welding material quality certificate of submerged arc welding of pressure equipment shall include the following contents: a) flux batch number and phase group electrode batch number, as well as electrode inspection, flux inspection and inspection results of deposited metal after assembly welding; b) the type of flux (neutral, active) shall be indicated for the flux for carbon steel and low-alloy steel. 3.1.3 The batch number of electrodes and fluxes for submerged arc welding of pressure equipment is the same as that given in the quality certificate conforming to 3.1.2; when the batch number of electrode and/or flux is different from that given in the quality certificate, inspection shall be carried out according to the organization’s quality assurance system, and the technical requirements shall not be lower than those given in this standard. Only after passing the test, can the batch number be used for welding pressure equipment. 3.2 Electrodes In carbon steel and low-alloy steel electrodes for submerged arc welding, the sulfur content shall be no more than 0.015% while the phosphorus content shall be no more than 0.020%; in stainless steel electrodes, the sulfur content shall be no more than 0.015% while the phosphorus content shall be no more than 0.025%. 3.3 Fluxes In fluxes, the sulfur content shall be no more than 0.035% while the phosphorus content shall be no more than 0.040%. 3.4 Chemical composition of the deposited metal of submerged arc welding material After the assembly welding of commonly used electrodes and rods for submerged arc welding of pressure equipment, the specified sulfur and phosphorus contents in the deposited metal are shown in Table 1. ? Table 1 Requirements for sulfur and phosphorus contents in deposited metal of the commonly used submerged arc welding material for pressure equipment Standard Flux model S (mass fraction) /% P (mass fraction) /% 3.5 Mechanical properties of deposited metal of submerged arc welding material 3.5.1 The mechanical properties of deposited metal of the commonly used submerged arc welding material for pressure equipment shall meet those specified in Table 2. 3.5.2 The percentage elongation after fracture of the deposited metal tensile specimen shall meet those specified in GB/T 5293-1999, GB/T 12470-2003 and GB/T 17854-1999 respectively, and shall not be less than 18%. ? Table 2 Mechanical properties of deposited metal of the commonly used submerged arc welding material for pressure equipment Standard Flux model Tensile test Impact test Tensile strength Rm/MPa Test temperature/℃ Impact absorption power KV2/J 3.5.3 See Table 2 for the deposited metal Charpy V-notch impact test of commonly used submerged arc welding material for pressure equipment. Three deposited metal impact specimens are taken and the mean of their impact test results shall not be lower than that given in Table 2; while, the impact test result of one specimen is allowed to be lower than the specified value, but shall not be lower than the specified value by 70%. 3.5.4 When the bending specimen of deposited metal is bent to the angle specified in Table 3, the opening defect with single length larger than 3mm is not allowed in any direction in the deposited metal on a stretching plane, and the corner opening defect of deposited metal may not be counted, but the length of corner opening defect caused by incomplete fusion, slag inclusion or other welding defects shall be counted. For the deposited metal of which lower limit of specified percentage elongation after fracture A is less than 20%, if it is unqualified upon bend test according to those specified in Table 3, and the measured value is less than 20%, the diameter of the bending center is allowed to be increased for retesting. The diameter of the bending center is equal to (A is the lower limit of the specified percentage elongation after fracture multiplied by 100), and the distance between the supports is equal to the diameter plus 23mm.

Foreword i 1 Scope 2 Normative references 3 Technical requirements 4 Test methods 5 Product Identification

ICS 25.160.10 J 33 中華人民共和國(guó)能源行業(yè)標(biāo)準(zhǔn) NB/T 47018.4—2017 代替NB/T 47018.4—2011 承壓設(shè)備用焊接材料訂貨技術(shù)條件 第4部分：埋弧焊鋼焊絲和焊劑 Technical permission of welding materials for pressure equipment Section 4：Electrodes and fluxes for submerged arc welding 2017—03—28發(fā)布 2017—08—01實(shí)施 國(guó)家能源局 發(fā)布 前言 NB/T 47018—2017《承壓設(shè)備用焊接材料訂貨技術(shù)條件》分為5個(gè)部分： ——第1部分：采購(gòu)?fù)▌t； ——第2部分：鋼焊條； ——第3部分：氣體保護(hù)電弧焊鋼焊絲和填充絲； ——第4部分：埋弧焊鋼焊絲和焊劑； ——第5部分：堆焊用不銹鋼焊帶和焊劑。 本部分是NB/T 47018—2017的第4部分。 本部分按GB/T 1.1—2009《標(biāo)準(zhǔn)化工作導(dǎo)則 第1部分：標(biāo)準(zhǔn)的結(jié)構(gòu)和編寫(xiě)》給出的規(guī)則起草。 本部分是對(duì)NB/T 47018.4—2011《承壓設(shè)備用焊接材料訂貨技術(shù)條件 第4部分：埋弧焊鋼焊絲和焊劑》的修訂。與NB/T 47018.4—2011相比，主要技術(shù)變化如下： ——在焊接材料質(zhì)量保證書(shū)規(guī)定中增加了焊劑、焊絲的批號(hào)及檢驗(yàn)要求； ——對(duì)焊絲和焊劑規(guī)定了磷、硫含量； ——在不銹鋼焊劑型號(hào)中增加了F310-H×××、F316CuL-H×××、F317-H×××； ——增加了熔敷金屬拉伸試樣斷后伸長(zhǎng)率的規(guī)定下限值； ——在彎曲試驗(yàn)中允許使用橫向彎曲試樣，增加了允許加大彎心直徑重新進(jìn)行試驗(yàn)的規(guī)定； ——?jiǎng)h除了碳鋼和低合金鋼用焊劑含水量規(guī)定，增加了埋弧焊熔敷金屬擴(kuò)散氫含量測(cè)定的規(guī)定； ——?jiǎng)h除了原附錄A“承壓設(shè)備埋弧焊常用鋼焊絲和填充絲牌號(hào)”。 本部分由全國(guó)鍋爐壓力容器標(biāo)準(zhǔn)化技術(shù)委員會(huì)(SAC/TC 262)提出并歸口。 NB/T 47018—2017的本部分所代替標(biāo)準(zhǔn)的歷次版本發(fā)布情況為： 承壓設(shè)備用焊接材料訂貨技術(shù)條件 第4部分：埋弧焊鋼焊絲和焊劑 1 范圍 NB/T 47018—2017的本部分規(guī)定了埋弧焊鋼焊絲和焊劑的技術(shù)要求、試驗(yàn)方法和產(chǎn)品標(biāo)識(shí)。 本部分適用于承壓設(shè)備埋弧焊用碳鋼焊絲和焊劑、低合金鋼焊絲和焊劑、不銹鋼焊絲和焊劑。 2規(guī)范性引用文件 下列文件對(duì)于本文件的應(yīng)用是必不可少的。凡是注日期的引用文件，僅注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。 GB/T 2653 焊接接頭彎曲試驗(yàn)方法 GB/T 3965 熔敷金屬中擴(kuò)散氫測(cè)定方法 GB/T 5293—1999 埋弧焊用碳鋼焊絲和焊劑 GB/T 12470—2003 埋弧焊用低合金鋼焊絲和焊劑 GB/T 17854—1999 埋弧焊用不銹鋼焊絲和焊劑 NB/T 47013.2 承壓設(shè)備無(wú)損檢測(cè) 第2部分：射線檢測(cè) NB/T 47014 承壓設(shè)備焊接工藝評(píng)定 NB/T 47018.1 承壓設(shè)備用焊接材料訂貨技術(shù)條件 第1部分：采購(gòu)?fù)▌t 3技術(shù)要求 3.1 通用規(guī)定 3.1.1 承壓設(shè)備用碳鋼、低合金鋼、不銹鋼埋弧焊用鋼焊絲和焊劑除應(yīng)分別符合GB/T 5293—1999、GB/T 12470—2003、GB/T 17854—1999的規(guī)定外，還應(yīng)符合NB/T 47018.1和本部分的規(guī)定。 3.1.2承壓設(shè)備用埋弧焊焊接材料質(zhì)量保證書(shū)中應(yīng)包含下列內(nèi)容： a)焊劑批號(hào)與相組配焊絲批號(hào)，以及焊絲檢驗(yàn)、焊劑檢驗(yàn)和組配施焊后熔敷金屬的檢驗(yàn)結(jié)果； b)碳鋼和低合金鋼用焊劑應(yīng)注明焊劑類(lèi)型(中性、活性)。 3.1.3用于承壓設(shè)備的埋孤焊焊絲和焊劑的批號(hào)與符合3.1.2條的質(zhì)量保證書(shū)內(nèi)容相同；當(dāng)焊絲和/或焊劑批號(hào)與質(zhì)量保證書(shū)內(nèi)容不同時(shí)，可按本單位質(zhì)量保證體系規(guī)定進(jìn)行檢驗(yàn)，技術(shù)要求應(yīng)不低于本標(biāo)準(zhǔn)，合格后才能用于焊接承壓設(shè)備。 3.2 焊絲 埋弧焊用碳鋼、低合金鋼焊絲以硫含量不大于0.015％、磷含量不大于0.020％為宜；不銹鋼焊絲以硫含量不大于0.015％、磷含量不大于0.025％為宜。 3.3焊劑 焊劑以硫含量不大于0.035％、磷含量不大于0.040％為宜。 3.4埋弧焊焊材熔敷金屬化學(xué)成分 承壓設(shè)備常用埋弧焊鋼焊絲與焊劑組配施焊后，熔敷金屬硫、磷含量規(guī)定值見(jiàn)表1。 ? 表1 承壓設(shè)備常用埋弧焊焊材熔敷金屬硫、磷含量規(guī)定 標(biāo) 準(zhǔn) 焊劑型號(hào) S(質(zhì)量分?jǐn)?shù))/％ P(質(zhì)量分?jǐn)?shù))/％ 3.5埋弧焊焊材熔敷金屬力學(xué)性能 3.5.1 承壓設(shè)備常用埋弧焊焊材熔敷金屬力學(xué)性能應(yīng)符合表2的規(guī)定。 3.5.2熔敷金屬拉伸試樣斷后伸長(zhǎng)率應(yīng)分別符合GB/T 5293—1999、GB/T 12470—2003、GB/T 17854—1999規(guī)定，且應(yīng)不低于18％。 表2 承壓設(shè)備常用埋弧焊焊材熔敷金屬力學(xué)性能 標(biāo)準(zhǔn) 焊劑型號(hào) 拉伸試驗(yàn) 沖擊試驗(yàn) 抗拉強(qiáng)度Rm/MPa 試驗(yàn)溫度/℃ 沖擊吸收功 KV2/J 3.5.3 承壓設(shè)備常用埋弧焊焊材的熔敷金屬夏比V型缺口沖擊試驗(yàn)規(guī)定見(jiàn)表2，熔敷金屬?zèng)_擊試樣取3個(gè)，其沖擊試驗(yàn)結(jié)果平均值應(yīng)不低于表2中的規(guī)定值，允許其中1個(gè)試樣的沖擊試驗(yàn)結(jié)果低予規(guī)定值，但不應(yīng)低于規(guī)定值的70％。 3.5.4熔敷金屬?gòu)澢嚇訌澢奖?規(guī)定的角度后，其拉伸面上的熔敷金屬內(nèi)沿任何方向不應(yīng)有單條長(zhǎng)度大于3mm的開(kāi)口缺陷，試樣熔敷金屬的棱角開(kāi)口缺陷可不計(jì)，但由未熔合、夾渣或其他內(nèi)部缺欠引起的棱角開(kāi)口缺陷長(zhǎng)度應(yīng)計(jì)入。 對(duì)于斷后伸長(zhǎng)率A標(biāo)準(zhǔn)規(guī)定值下限小于20％的熔敷金屬，若按表3規(guī)定的彎曲試驗(yàn)不合格，而其實(shí)測(cè)值小于20％，則允許加大彎心直徑重新進(jìn)行試驗(yàn)，此時(shí)彎心直徑等于 (A為斷后伸長(zhǎng)率規(guī)定值下限乘以100)，支座間距等于直徑加23mm。 表3彎曲試驗(yàn)尺寸規(guī)定 試樣厚度/mm 彎心直徑/mm 支座間距離/mm 彎曲角度/(°) 10 40 63 180 3.6熔敷金屬擴(kuò)散氫含量 埋弧焊熔敷金屬擴(kuò)散氫含量測(cè)定按照GB/T 3965進(jìn)行，其含量應(yīng)符合表4的規(guī)定。 表4 埋弧焊焊材熔敷金屬擴(kuò)散氫含量規(guī)定 標(biāo) 準(zhǔn) 焊劑型號(hào) 熔敷金屬擴(kuò)散氫含量/(mL/100g)(水銀法或熱導(dǎo)法) 3.7熔敷金屬射線檢測(cè) 熔敷金屬射線檢測(cè)應(yīng)按NB/T 47013.2進(jìn)行，射線檢測(cè)技術(shù)應(yīng)不低于AB級(jí)，質(zhì)量等級(jí)應(yīng)為I級(jí)。 4試驗(yàn)方法 4.1 熔敷金屬化學(xué)分析 4.1.1 熔敷金屬化學(xué)分析用堆焊試件的最小長(zhǎng)度為150mm，試件上堆焊8層，化學(xué)分析試樣應(yīng)取自第5層以上。 4.1.2化學(xué)分析試樣也可以從熔敷金屬力學(xué)性能試驗(yàn)用試件的熔敷金屬上制取，但仲裁試驗(yàn)應(yīng)按4.1.1的規(guī)定制取。 4.2熔敷金屬?gòu)澢囼?yàn) 4.2.1 制備平焊試件，試件厚度和坡口形式應(yīng)分別按GB/T 5293—1999、GB/T 12470—2003和GB/T17854—1999規(guī)定。 4.2.2焊接試件采用φ3.2mm或φ4.0mm焊絲焊制，也可按供需雙方協(xié)議。 4.2.3試樣制備 a)采用冷加工法或熱切割法切取試樣。當(dāng)采用熱切割法時(shí)，應(yīng)用冷加工法去除熱影響區(qū)； b)允許避開(kāi)焊接缺陷、缺欠制取彎曲試樣，面彎與背彎試樣各取1個(gè)，縱向彎曲試樣位置見(jiàn)圖1，或在相同位置取橫向彎曲試樣； 面彎試樣 背彎試樣 圖1 縱向彎曲試樣位置圖 c)制備面彎(背彎)試樣時(shí)，應(yīng)從背面(正面)加工除去多余厚度，試樣的受拉面盡量靠近試件表面； d)焊縫余高及墊板應(yīng)采用機(jī)械方法去除，試樣的受拉面應(yīng)齊平，縱向彎曲試樣尺寸見(jiàn)圖2，橫向彎曲試樣尺寸按NB/T 47014的相關(guān)規(guī)定。 注：試樣受拉面棱角R≤3。 圖2縱向彎曲試樣尺寸 4.2.4彎曲試驗(yàn)應(yīng)符合表3及GB/T 2653的規(guī)定。 5產(chǎn)品標(biāo)識(shí) 按本部分規(guī)定生產(chǎn)的焊絲、焊劑的內(nèi)外包裝、說(shuō)明書(shū)以及質(zhì)量證明書(shū)上，應(yīng)標(biāo)有“承壓設(shè)備埋弧焊用鋼焊絲(焊劑)”字樣和產(chǎn)品標(biāo)識(shí)“NB/T 47018”，其內(nèi)包裝標(biāo)簽也應(yīng)印有產(chǎn)品標(biāo)識(shí)。