无损探伤常用标准

1、无损探伤常用标准、DL/T821-2002、GB3323-2005、JB/T4730-2005对管道透照要求标准管道规格透照方式投影要求透照厚度透照次数象质号象质计放置备注中89双壁单影分段TA=2T+hL1<15mm分3段(120°)L1>15mm分4段(90°)R'10系列胶片侧1.DL/T821218089中76双壁双影椭圆3-10mmTA=0.8(D-T)XT1/2+T42次(90°)I型射源侧胶片侧时其076双壁双影椭圆3-10mmTA=0.8(D-T)XT1/2+T允许1次II或I型53BG>0100双壁单影分段W查图表R&#

2、39;10系列胶片侧象质指数应通过对比试验或提身1级；GB/T3323、JB/T4730可查表确定；0100双壁双影倾斜椭圆透昭八、垂直透照WT/Do<0.12(900)二次T/Do>0.12(600)三次专用（5根等径）射源侧平行焊缝0->0400双壁单影单壁单影分段W或TK=1.1查图表R'10系列查表胶片侧射源侧400>C>>100双壁单影分段WK=1.2查图表R'10系列查表胶片侧或射源侧0100双壁双影椭圆：T<8,q<Do/4垂直：T>8,WT/D00.12,90°二次T/D>0.12,60

3、76;三次专用象质计射源侧qDo/460°三次2 .偏心距计算：Lo=(b+q)L1/L23 .焦距改变时计算：E2(t2)=Ei(ti)F22/Fi2说明：D一管径T一管壁厚E2、t2、F2Ei、ti、Fi一原曝光量、时间、焦距、DL/T821-2002标准透照厚度与象质计线号（线径）关系透血厚,象质,数1Z<6>68>812>1216>1620>2025>2532>3250>5080>80120>120150>150175线编号151413121110987654线径mm0.1250.160.200.250.

4、320.400.500.630.801.001.251.60三、GB/T3323-2005管道A级透照应识别的丝径（丝号）W190.050W180.063W170.080W160.100W150.125W140.16W130.20W120.25W110.32W100.40W90.50W80.63W70.80W61.00W51.25W41.60W32.00W22.50W13.20双壁单影胶片侧<1.21.2-2.02.0-3.53.5-5.05.0-1010-1515-2222-3838-4848-6060-8585-125125-22,5225-374j>375双SW寸源侧<

5、1.21.2-2.02.0-3.53.5-5.05.0-7.C)7.0-1212-1818-3030-4040-5050-6060-8585-120120-22()220-38)>380四、JB/T4730-2005标准管子透照AB级象质计的选用决定透照方式放置位置公称厚度范围技术等级（AB）线径号透昭八、厚度161514131211109876双壁双2.0>2-3>3-4.5>4.5-7>7-11>11-15>15-22>22-32>32-44>44-54/影射源侧<100双双/双单胶片侧100<2.0>2-3.5

6、>3.5-5.5>5.5-11>11-17>17-26>26-39>39-51>51-64>64-85>85-125>125-2252：<<400单壁单影射源侧>400<2.0>2-3.5>3.5-5.0>5.0-7>7-10>10-15>15-25>25-32>32-40>40-55>55-85>85-1501五、DL/T821-2002、对中089管子的透照厚度与象质指数速查表管子规格透照厚度象质指数管子规格透照厚度象质指数管子规格透照厚度象

7、质指数89X418.751148X312.291224X27.31489X521.391048X3.513.481224X39.341389X623.851048X414.611224X411.151389X726.17948X516.731122X27.061483X418.221145X311.971322X39.031383X520.791045X414.241222X410.781383X623.191045X516.311183X725.45920X26.814183X827.59942X311.651320X38.711342X413.861220X410.41376X417.58

8、1142X515.881276X520.071019X26.661476X622.39r10n40X2.510.24：1319X38.5413176X724.581040X311.431319X410.191376X826.66940X413.61218X26.52r14170X314.341238X2.510.041318X38.361370X416.991138X311.191318X49.98.1370X519.421138X413.321270X621.671017X26.38r14170X723.81035X2.59.711317X38.181335X310.831317X49.76

9、1363.5X313.771235X412.901263.5X416.341116X26.231463.5X518.68r11132X2.5P9.3711316X37.99r14132X310.461316X49.541360X313.461232X412.471260X415.971214X25.91560X518.261130X2.59.131314X37.591430X3P10.2011314X49.05一13157X313.181230X412.151257X415.641212X1.54.671557X517.891129X2.59.011312X25.751529X310.0613

10、12X2.56.391451X312.61229X4121351X414.971210X1.54.351551X517.131125X27.421410X25.21525X3F9.491310X2.55.961525X411.3313六、管道焊缝射线探伤透照片数表管防券H*-r(Y舔昭出加透昭八、方式选用胶片尺寸(mm)、勺道口径()周长(mm)T<8qwD0/4T>8q>D0/4T/D00.12T/D>0.12备注148151双壁双影120X80椭圆成象垂直成象231、双壁双影出时，椭圆成象怖心距计算：L0=(b+q)L1/L2;260189双壁双影120X80椭圆成

11、象垂直成象232、因结构原因冷凝器盘管和水冷壁排管可透照一张；376239双壁双影120X80椭圆成象垂直成象233、双壁单影法偏心距为：Lo<(F-D)/6;489280双壁双影120X80椭圆成象垂直成象234、当钢厚度/550mm时)月T2胶片，E=20mA-min)勺管道口径()周长(mm)透昭八、方式选用胶片尺寸(mm)焦距K值透照次数(张)一次透照长度F=700mm,D=2.透照电压经验选择公式：kV=5T+90,T)透照厚度；1108339双壁单影180X80F=600K=1.26574、透照铝焊线时，kV=1.5T+502114358双壁单影180X80F=600K=1.

12、26605、焦距改变时计算：E2(t2)=E1(t1)F22/F12Ei、t1、FiJjf3133418双壁单影180X80F=600K=1.2T<4.55T>4,5684/70曝光量、时间、焦距；E2、t2、F2一改变后曝光量、时间、4159500双壁单影180X80F=600K=1.2T<85T>86100/83.5焦距；5168528双壁单影180X80F=600K=1.2T<4.55T>4,56106/886219688双壁单影200X80F=600K=1.2T<105T>1061387245770双壁单影200X80F=600K=1.2

13、51548273857双壁单影200X80F=600K=1.25171.593251021双壁单影240X80F=600K=1.25204.5103771184双壁单影300X80F=600K=1.25237114261338双壁单影300X80F=600K=1.16223125291662双壁单影300X80F=660K=1.18207136301979双壁单影300X80F=750K=1.182477202262双壁单影300X80F=870K=1.110226.5七、DL/T821-2002、GB/T3323-2005、JB/T4730-2005钢管道质量分级（底片评级）圆缺TV25,评

14、定区10X10条缺未焊透（不加垫板）内凹与（咬边）备注T1010-1515-25单个多个Do>100(89)Dow100(89)Do>100(89)Dow100(89)IJB4730123不允许不允许不允许不允许不允许不允许1、综合评级:JB/T4730:在条形DL/T821123不允许不允许不允许不允许比W10%T深W1.0累长W25%总长比w10%T深W1.0累长W30%总长评定区缺陷等级相同，则降一级，不同时以低级别定；DL/T821:GB3323123不允许不允许不允许不允许/比W10%T深W1.0长不限要求各级别之和-1（大田者为IV）n12T比0比0比&比W4内

15、10%T10%T15%T15%TGB3323:<深W1.0深W深w深w二种之和T/36L单长w1.01.51.5-1ATt/3累长单长累长w三种之和JB4730369W20(4W<3T内30%总-2420)10%AT长6T内A总长累长A2、发现裂纹T(4)100未熔合即为300内AIV级30DL/T821369T<12412-60T/312T内6LAT比W10%T深w1.5T<12时12-36时比w10%T深01.5累长比W15%T深w2.0累长W比W15%T深W2累长wT>4T/325%总30%总436时A长长6010%12,12T20内6LAT总长GB3323369T<12412-60T/3T>602012T内6LAT不允许比W15%T深w1.5累长10%周长/比W20%T深w2.0长不限mJB47306121862/3T306T内3LAT6比W15%T深<1,5单长W2/3T(6<30)3T内AT;300内>40比W15%T深w1.5累长15%总长比W20%T深w3.0<30%总长累长A100比W20%T深w2.0累长W30%总长DL/T821612>18T<969-452/3TT>45306T内3LAT6比w15%T深<2,0TW9时>659-30时2