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1、第 1 页 共 12 页Technics Regulation for Magnetic particle Examination作业指导书Operation Guidebook编制 Prepared By：审核 Checked By：批准 Approved By：第 2 页 共 12 页磁粉检测通用工艺规程Technics Regulation for Magnetic particle Test1 主要内容和适用范围1 Scope1.1 本规程规定了磁粉检测人员资格、所用设备、器材、检测技术和质量分级等。1.1 This regulation define the qualificatio
2、n of Magnetic particle test person, facility , equipment, examining method and quality grade.1.2 本规程按 JB/T 4730.4-2005 的要求编写。适用于铁磁性材料的机加工件、焊缝、板材坡口面等表面和近表面缺陷的检测，不适用于非磁性材料及磁性材料与非磁性材料结合部位的检测。满足 GB 150、 压力容器安全技术监察规程和相关标准的要求。1.2 This regulation is compile based on JB/T 4730.4-2005. It is suitable for fer
3、ro-magnetic material, such as machining workpiece, weld seam, groove face of plate and near surface flaw. The regulation is not suitable for non-magnetic substance and bonded block made with ferro-magnetic material and non-magnetic substance. The regulation satisfied with GB-150, Supervision, Regula
4、tion on Safety Technology for Pressure vessel and correlative standard.1.3 本规程适用于非荧光湿磁粉的连续磁化技术。1.3 This regulation is suitable for continuous Magnetizing technique of non-fluorescent wet magnetic particle.1.4 检测工艺卡是本规程的补充。由级或以上人员按合同及本规程和 JB/T 4730.4-2005 编制，其参数规定得更具体。1.4 Examine process chart is a s
5、upplement of this regulation. The chart is prepared be grade II person or more than grade II person, and the chart is prepared following contract, this regulation and JB/T 4730.4-2005. The parameter in process chart is more detailed.2 检测人员 2 Testers2.1 检测人员必须经过培训，按特种设备无损检测人员资格考核与监督管理规则取得与其工作相适应的资格证书
6、，并负相应的技术责任。2.1 All personnel engaged in Magnetic Particle examination must be trained technically and examined and appraised in accordance with Special Equipment Nondestructive Testing and Supervising Standard.These person should have corresponding technical responsibility. And take corresponding te
7、chnical responsibilities.第 3 页 共 12 页2.2 检测人员每年应检查一次身体，其未经矫正或经矫正的近（距）视力和远（距）视力应不低于5.0（小数记录值为 1.0） ，不得有色盲。2.2 The personnel engaged in nondestructive testing must have excellent physical conditions and do physical check-up once a year, corrected eyesight must not be lower than 1.0. The personnel enga
8、ged in magnetic powder testing and penetration testing must not be color blind and weak.3 设备、工具和材料3. Facility, Equipment and Material、级人员按下列条件和工艺卡要求选用设备、工具和材料。Person with grade I and II should choose facility, equipment and material as following condition and chart.3.1 磁化设备及校验3.1 Magnetizing Equipme
9、nt and Calibration3.1.1 磁化设备见表 1。3.1.1 Magnetizing Equipment is shown as Table 1.表 1 磁粉检测设备（按公司现有设备修改下表）Table 1 Magnetic Particle Testing Equipment制造厂/Manufactory 型号/Model 结构形式/Type 提升力/Lifting power 备注 /Note江苏射阳探伤机厂/Jiangsu She yang detective equipment companyDCE-E2 便携式/portable type AC 提升力118NAC L
10、ifting power118N交叉磁轭/cross yoke江苏射阳探伤机厂/Jiangsu She yang detective equipment companyDCE-C 便携式/portable typeAC 提升力118NAC Lifting power118N交叉磁轭/cross yoke注：提升力用试块测定，当使用磁轭最大间距时，交流电磁轭至少应有 45N 的提升力，直流电磁轭至少应有 177N 的提升力，交叉磁轭至少应有 118N 的提升力（磁极与试件表面间隙0.5mm） 。Note: Lifting force is tested by shim. When use the
11、 maximum yoke distance, the lifting power of alternating current yokes should at least 45N and 177N for DC yoke. The lifting power of cross yokes at least 118N . (the distance between magnetic pole and shim 0.5mm )3.1.2 磁化设备的校验3.12 Calibration of Magnetizing Equipment（1） 电流表精度校验(1) Calibration of am
12、peremeter precision磁粉检测设备的电流表，至少半年校验一次。当设备进行重要电气修理或大修后，应进行校验。Magnetizing equipment with an ammeter shall be calibrated at least once half a year, or when-ever the 第 4 页 共 12 页equipment has been subjected to major electric repair, periodic overhaul, or damage.（2） 电磁轭提升力校验(2) Lifting power of Yokes电磁轭
13、的提升力至少半年校验一次。在磁轭损伤修复后应重新校验。The magnetizing power of electromagnetic yokes shall be checked twice a year. The magnetizing power of all yokes shall be checked whenever the yoke has been damaged or repaired.3.2 灵敏度试件3.2 Shim of sensitivity3.2.1 标准试片主要用于检验磁粉检测设备、磁粉和磁悬液的综合性能，了解被检工件表面有效磁场强度和方向、有效检测区以及磁化方法
14、是否正确。标准试片有 A1 型、C 型、D 型和 M1 型。其规格、尺寸和图形见表 2。3.2.1 The normal shim mainly used for checking magnetic particle testing machine, magnetic particle and magnetic suspension. To check whether the effective magnetic density, effective checkout zone and Magnetizing method are correct or not. The type of nor
15、mal shim are A1, C, D and M1. The size and graph are shown as Table 2.表 2 标准试片的类型、规格和图形Table 2 Type, Size and Graph of normal shim类型/type 规格：缺陷槽深/试片厚度，msize: depth of defect/ thickness of shim, m 图形和尺寸， mmgraph and size, mmA1-7/50A1-15/50A1-30/50A1-15/100A1-30/100A1型A1-60/1007/50A162C-8/50C型C-15/50人
16、 工 缺 陷分 割 线8/501CD型D-7/50 5103第 5 页 共 12 页D-15/5012mm 7/509mm 15/50M1型6mm 30/50M120注：C 型标准试片可剪成 5 个小试片分别使用。Note: Normal shim of type C can be used divided 5 pieces.磁粉检测时一般应选用 A1-30/100 型标准试片。当检测焊缝坡口等狭小部位，由于尺寸关系，A1 型标准试片使用不便时，一般可选用 C-15/50 型标准试片。为了更准确地推断出被检工件表面的磁化状态，当用户需要或技术文件有规定时，可选用 D 型或 M1 型标准试片。As a rule, model test piece can be chose A1-30/100. If it is not convenient to use A1 model test piece for sensitivity
