1, rangeThis procedure applies to iron magnetic material pressure container and its components surface, near surface defect of magnetic particle detection method.2, reference standardsThe following normative document contains provisions which, through reference in this text, constitute provisions of this standard. In the standard was published, the editions areFor the effective. All standards are subject to revision, concerned parties using this standard should be explored using the latest edition of the following standards of possibility.GB1501998 steel pressure vesselJB / T 47302005 nondestructive testing of pressure vessels3, personnel qualification3.1 engaged in magnetic particle testing personnel, should be in accordance with the" special equipment of nondestructive testing personnel assessment and regulatory rules" requirements to obtain a corresponding qualification of nondestructive testing personnel.The 3.2 magnetic particle testing personnel should be engaged with the respective technical grade corresponding to the work, and bear corresponding responsibility for technology.The 3.3 magnetic particle inspection personnel shall be in accordance with the relevant regulations, standards of pressure vessel and the process, efforts to complete the magnetic particle testing work, ensure the test quality.Engaged in the 3.4 magnetic detection working personnel shall have the color, color blindness. Corrected visual acuity of not less than 1.4, equipment and equipmentThe 4.1 device:Quality control should be in line with the JB / T 4730.42005 article 3.3 requirements.Equipment: 4.2 black powder, kerosene, oil suspensionQuality control should be in line with the JB / T 4730.42005 article 3.9 requirements.In 5, the arrangement of process5.1 after 24 hours after the detection of welding;The 5.2 fastener and forgings after heat treatment test;5.3 should be in the painting, phosphating and Bluing, electroplating and other surface treatment before detection.6, detection technology6.1 detection methods: wet continuous method;6.2 methods of magnetization: longitudinal magnetization and magnetic yoke method;The 6.3 magnetic specification: AC electromagnetic yoke lifting force should be > 44N;The sensitivity of the 6.4 : the use of 15 / 50 or 30 / 100 of type A standard specimen for comprehensive performance test.In 7, testing operation7.1: clean the detection surface pretreatment, weld and heat affected zone of two 10mm, with metallic luster.7.2: cross magnetic yoke magnetization. The moving speed of 30cm / min, the electrifying time is at least two times 13 seconds, magnetization, stopping applying magnetic suspension after 3 seconds,It can stop the magnetization.7.3: application of magnetic suspending liquid spraying method.7.4 detection methods: wet continuous method, first with a magnetic suspension liquid wetting workpiece surface in the detection zone, through electromagnetic and application of magnetic suspending liquid, the magnetic liquidBecome stranded when stopping electrifying, observation, evaluation of magnetic marks, the surface subject to inspection by visible light illumination > 500LX, use when necessary 510 timesMagnifying small defects magnetic mark.7.5 defects of magnetic trace display recording: defect magnetic display records by photographic, video strippable plastic records, while the application of draft mark.7.6: local demagnetization demagnetization using electromagnetic yoke, workpiece remanence should be less than 0.2mT.7.7 after treatment : clean the workpiece surface magnetic powder.8, acceptance and ratingIn 8.1 the following defects will not allow the existence of3 any cracks and flaking;4 any lateral defect display;5 seam and fasteners of any length greater than 1.5mm linear defects;6 forging any length greater than 2mm linear defects;The 7 single size greater than or equal to 4mm Round flaw display.The 8.2 magnetic evaluation and records in the JB / T 4730.42005 fifth implementation.The 8.3 flaw display the cumulative length of grading according to JB / T 47302005 table 6 executive.9, report9.1 testing report issued by JB / T 4730.42005 tenth implementation;The 9.2 inspection report content should be correct, complete and have the corresponding responsibility person authorized signature.9.3 detection for examination, testing and defect of single parts diagram, test records, both as a technical data archiving.9.4 test data shall be properly maintained for 7 years, after 7 years, can be transmitted to the user.
是啊 要花钱的 给钱的话还是可以考虑的
宝贝儿,这么专业这么多,要花银子的。