管道材料設(shè)計技術(shù)規(guī)定焊接材料的選用原則

管道材料設(shè)計技術(shù)規(guī)定接材料的選用原則2.1焊接材料的選用應(yīng)根據(jù)母材的化學(xué)成份、機械性能、焊接接頭型式以及耐高溫、耐低溫、耐腐蝕、抗裂性和采用的焊接工藝程序和焊接措施來綜合考2.2選用原則：221焊接材料中的化學(xué)成份相當母材的成份。221焊后的接頭強度不低于母材抗拉強度的下限值，同時也不得遠大于標準規(guī)定抗拉強度的下限值。酸性焊條適用于一般受力不復(fù)雜的工況下，而堿性焊條可適用于低溫狀況。2.3常用的焊條和焊絲見表?3（僅為推薦）。碳 鋼 焊 條表2.3—1鋼材類別焊條牌號性 質(zhì)低碳鋼，如Q235J422酸性焊條20R20g1020J427低氫堿性焊條碳錳鋼，如16MnJ507J507RH低氫堿性焊條16MnR20MnMoJ507GR奧氏體不銹鋼焊條表2.3—20Cr18Ni90Cr19Ni9A102鈦鈣酸性焊條

00Cr19Ni1100Cr19Ni11A002A002A鈦鈣酸性焊條氧化鈦鈣酸性焊條0Cr18Ni11Ti0Cr18Ni10Ti1Cr18Ni9TiA1320Cr17Ni12Mo2A20200Cr17Ni14Mo2A0220Cr18Ni12M02Ti1Cr18Ni12Mo2Ti不銹鋼焊絲和焊劑 表2.3—3鋼材類別焊 絲0Cr18Ni9H0Cr21Ni1000Cr19Ni10H00Cr21Ni100Cr18Ni10TiH0Cr20Ni10Ti1Cr18Ni9TiH0Cr20Ni10Nb0Cr17Ni12Mo2H0Cr19Ni12Mo200Cr17Ni14Mo2H00Cr19Ni12Mo00Cr18Ni12Mo2TiH00Cr19Ni12Mo22.4管道類別、射線探傷比例及合格標準，見表2.4(僅為推薦)管道類別、檢驗比例及合格標準 表2.4類別設(shè)計壓力(P)設(shè)計溫度⑴檢驗比例％合格批準

A任意任意100BB1iP>10MPa任意100□10MPa>P>4MPat再00CB210MPa>P>4MPat<400C20□4MPa>P>1MPat再00CB3PwiMPat再00C10□PwiMPat<400CB4PwiMPat<400C5mCCiP>10MPat再00C100□C2P>10MPat<400C20□10MPa>P>4MPat再00C2.5常用配管的焊接施工焊材的選用，見表2.5(僅為推薦)。類別設(shè)計壓力(P)設(shè)計溫度(t)檢驗比例％合格批準CC310MPa>P>4MPat<400C10m4MPa>P>1MPat再00CC44MPa>P>1MPat<400C5mPW1MPat再00CC5PW1MPa186C<t<400C——DPW1MPa-29C<t<186C——注：(1) 當設(shè)計溫度tv-29C時，無論哪一類管道，均應(yīng)100%射線照相檢驗，□級合格。氧氣管道按B類管道進行檢驗。管道類別為：A類：極度危害和高度危害的有毒流體B類：可燃流體和一般有毒流體C類：非燃流體和無毒流體D類：非燃流體和無毒流體(PWlMPa,-29°C<t<186C)2.5材料焊條、焊絲材料20G,Q235-AQ215A,2020R16Mn2516Mn1OMnDR09Mn2VDR3.5Ni0Ni3.5MoXtD112c20G,Q235-J427J427AH08AH08AQ215A,20,2H08MnAH08MnAORJ427J42710,20,20gH08AH08AH08MnAH08MnA16MnJ427J427J50725H08AH08AH10Mn2H08MnAH08MnA16MnJ507,W7010MnDRJ427J427J5077H08AH08AH10Mn2H10Mn2H08MnAH08MnAH08Mn2MoVAJ427J427J507J507W70709Mn2VDRH08AH08MnAH08AH08MnAH10Mn2H10Mn2H08Mn2MoVA3.5NiJ427J427J5071Ni3.5MiXIH08AH08AH10Mn2W707NiW907NiW907NiDRH08MnAH08MnA5CrMo,16MR3(oJ427J427J50712Cr1MoVH08AH08AH10Mn2R3(H08MnAH08MnATC0Cr18Ni9TiA312A312A312A312A312A3120Cr19Ni9H0Cr21NiH0Cr21NiH0Cr21NiH0Cr21NiH0Cr21NiH0Cr21Ni1Cr18Ni9Ti101010101010H0C00Cr18Ni10A312A312A312A312A312A31200Cr19Ni10H00Cr21NH00Cr21H00Cr21H00Cr21H00Cr21H00Cr2