无损探伤通用技术规范(中英文).doc
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1、东方电机股份有限公司DONGFANG ELECTRICAL MACHINERY CO., LTD.Rev: 0东方电机股份有限公司DONGFANG ELECTRICAL MACHINERY CO., LTD无损探伤通用技术规范NDT GENERAL TECHNOLOGY PROCEDURE东方电机股份有限公司DONGFANG ELECTRICAL MACHINERY CO., LTD.Rev: 0 编 制Issued by刘文高、王麟校 核Checked by邓伟勇审 定Approved by吴天茂2003年9月18日无损探伤通用技术规范NDT GENERAL TECHNOLOGY PROCE
2、DURERev: 0 目 录INDEX1锻件超声波探伤规范1Ultrasonic Inspection Procedure for Forging 12焊缝超声波探伤规范5Ultrasonic Inspection Procedure for Welds 53磁粉探伤规范15Magnetic Particle Inspection Procedure154液体渗透探伤规范26Liquid Penetrant Inspection Procedure 265射线探伤规范34Radiographic Inspection Procedure 34锻件超声波探伤规范Ultrasonic Inspec
3、tion Procedure for ForgingPAGE: 4 of 481. 锻件超声波探伤规范Ultrasonic Inspection Procedure for Forging1.1 适用范围 SCOPE本规范适用于JB4730-94压力容器无损检测标准第二篇或ASTM A388规定的钢锻件超声波探伤。This procedure covers ultrasonic inspection for the iron forged products in accordance with the JB4730-94Nondestructive testing of Pressure Ve
4、sselsSection or ASTM A388.1.2 设备和人员 APPARATUS AND PRESONNEL1.2.1 设备 APPARATUS超声波探伤仪采用A388 4.1条规定的A型超声波探伤仪。探头晶片直径1429mm,最大有效面积为635mm2,探头频率采用25MHz,必要时也可采用1或1.25MHz。An ultrasonic pulsed reflection type A of instrument shall be required in accordance with part 4.1 of ASTM A388. The probe shall have a ma
5、ximum active area of 635mm2 with the diameter of 1429mm max and the probe frequency shall be 2 to 5MHz. If necessary, a frequency of 1MHz or 1.25MHz may be employed, and the areas to be inspected shall be defined on the test report.1.2.2 超声波探伤仪应根据ASTM E317作垂直、水平和线性的校验,其周期应不超过一年。Ultrasonic examinatio
6、n equipment shall be calibrated in accordance with ASTM E317 for screen height, horizontal and amplitude linearity. The calibrations shall be at a frequency not to exceed one year.1.2.3 人员 PERSONNEL所有从事超声波探伤的人员都应按照GB9445-88无损检测人员资格鉴定通则或SNT-TC-1A推荐的方法进行培训和资格鉴定。All personal performing ultrasonic exami
7、nation shall be trained and qualification according to the GB9445-88Rules for Qualification and Certification of NDT Personnel or SNT-TC-1A recommended method.1.3 检测时机 TESTING STAGE超声波检测应在锻件最终热处理之后,粗加工状态下进行。The ultrasonic examination for iron forged products shall be performed in final heat treatmen
8、t and rough machined condition.1.4 表面制备 SURFACE PREPARATION1.4.1 所有探伤表面应加工到Ra6.3m,锻件被检表面应无任何污物。The roughness of all surfaces to be examined shall not exceed 6.3 micrometer. The surface of the forging to be tested shall free and form extraneous dirt.1.5 耦合剂 COUPLANT甘油、ULTRAGEL高温耦合剂、金属专用浆糊、机油、水或相当的物质可
9、作为检查用耦合剂。校正与检验应使用相同的耦合剂。Glycerin, ULTRAGEL, metal paste, oil, water or equivalent, shall be used as couplant for these inspection. The same couplant shall be used for calibration and testing.1.6 扫查技术 SCANNING TECHNIQUE1.6.1使超声波传入工件应涂刷适量的耦合剂。探头应紧贴探伤面移动。Sufficient proper couplant shall be used to perm
10、it for sound wave transmission into the material being examined. The search unit shall be moved in intimate contact with examination surface.1.6.2 扫查速度不超过150mm/s。相邻两次扫查之间应有一定的重叠,重叠宽度至少为探头晶片尺寸的15%。The rates of scanning not exceed 150mm/s. Each pass of the search unit shall overlap the previous pass b
11、y a minimum of 15% of the transducer element dimension perpendicular to the direction of scanning.1.7 仪器校准 CALIBRATION OF EQUIPMENT1.7.1纵波探伤采用底面反射法校准仪器,第一次底波调至屏高和屏宽的75%。To perform the longitudinal technique examination ultrasonic equipment calibration on the back reflection. Adjust the first respons
12、e to 75% of full screen height (FSH) and full screen width (FSW).1.7.2 仪器在下列时间应重新根据校正标准。Equipment shall be calibrated checked against a calibration standard for proper functioning and gain setting at the following intervals:每次检查的开始和结束;At the beginning and end of each examination.每四个小时;Every four hou
13、rs探伤更换人员时;When examination personnel are changed.怀疑仪器出现故障时;At any time when an equipment malfunction is suspected.当断面厚度或直径有较大改变时;When the section thickness or diameter are changed.探头、耦合剂、仪器调整或者扫查速度有变化时。When the search unit, couplant, setting of equipment or the rate of scanning are changed.1.8 验收 AC
14、CEPTANCE除非在产品图纸上另有说明,否则应按下述验收。Unless otherwise noted on a product drawing, the following acceptance criteria shall apply.1.8.1 用直探头检查 Examination with normal bundle存在任何下列情况的不连续将拒收:The discontinuities will be refused in any of the following situation:任何类型的线性缺陷;Every kind of the linear discontinuities
15、;底波衰减超过95%;Loss of depth echo superior to 95%;波幅超过4mm当量的任何显示。(两个显示范围之间的距离小于一个单独缺陷的大小);Any indication with an amplitude higher than the obtained of a bore with 4mm of the diameter (if the distance between the limits of two indications were lower than a unique indication).波幅超过80%参考线且引起底波衰减大于30%的密集缺陷。A
16、ccumulation of the indications with amplitudes superior to 80% of the level of the reference and causing a reduction of the depth echo superior to 30%.密集缺陷的定义是在任意100cm22cm体积内缺陷的数量超过6个。Accumulation of the indications is defined as any area of the 100cm2, that shows a quantity superior to 6 indication
17、s in each depth of 2cm.波幅超过50%参考线的允许缺陷必须记录并提交DFEM认可。The indications permissible, which amplitudes were superior to 50% of the reference level, must be registered and submitted to the approbation of the DFEM Ltd.1.8.2 用斜探头检测 Examination with angle bundle下列情况的缺陷将被拒收。The discontinuities will be refused
18、 on the following situation:波幅超过ASME标准第V卷第5章所限定直径的圆柱孔的任何显示。(孔径是锻件厚度的函数)Any indication with an amplitude higher than the obtained of the one cylinder bore with diameter determined by the standard ASME V. article 5(in function of the thickness of the forged).波幅超过50%参考线的容许缺陷,必须记录并提交DFEM批准。The indicatio
19、ns permissible, which amplitudes were superior to 50% of the reference level, must be registered and submitted to the approbation of the DFEM Ltd.1.9 探伤报告 REPORT探伤报告至少应包括下列内容:A report of the examination shall be prepared containing the following information as a minimum:工 作 号Job No.图 号Dwg. No.委托单位Ap
20、plicant零件数量Quantity委托编号Dep. No.零件尺寸Size材 料Material零件名称Part name炉 号Heat No.探伤标准Spec. No.材料状态Conditions探伤区域Exam. area探伤方法Method探头规格Probe灵 敏 度Sensitivity所用规程Procedure used.扫 查 面Surface scanned.耦 合 剂Couplant使用的超声仪Ultrasonic equipment used.校准试块编号Calibration block number.DAC曲线说明Description of DAC curve.探头
21、频率Probe frequency.探伤员姓名和资格证等级Inspectors name and level of qualification.探伤日期Date of the inspection.焊缝超声波探伤规范Ultrasonic Inspection Procedure for WeldsPAGE: 15 of 482 焊缝超声波探伤规范Ultrasonic Inspection Procedure for Welds2.1 适用范围 SCOPE本规范适用于JB4730-94标准压力容器无损检测第二篇或ASME第五章和第八章规定的焊缝超声波探伤。This procedure cover
22、s ultrasonic inspection of welds in accordance with the JB4730-94Nondestructive testing of Pressure VesselsSection or the ASME Code Sections , and Section .2.2 参考标准 APPLICABLE DOCUMENTSJB4730-94标准压力容器无损检测第二篇JB4730-94Nondestructive testing of Pressure VesselsSection ;ASME标准第五章和第八章“锅炉和压力容器规程”;ASME Boi
23、ler & Pressure Vessel Code Sections V and ;ASTM 标准中的E317;ASTM E 317;GB9445-88无损检测人员技术资格鉴定通则或ASNT,SNT-TC-1A标准中推荐的关于无损探伤人员资格的考核办法。GB9445-88Rules for qualification and certification of NDT personnel or ASNT, SNT-TC-1A. Recommended Practice for qualification of Nondestructive Testing Personnel.2.3 人员资格
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