無損檢測磁粉檢驗工藝規(guī)程-wenkub
2022-11-01 21:45:03 本頁面
【正文】 itudinal magic field. The alternating current electromagic yoke shall have a lifting power of at least 10 lb. () at maximum pole spacing. The direct current electromagic yoke shall have a lifting power of at least 40 lb. () at the maximum pole spacing. The field strength of yokes can be empirically determined 檢驗介質是具有高導磁率和低頑磁性的細鐵磁粉，其尺寸和形狀必須易于形成磁粉顯示。如果設備已一 年或一年以上未使用，則在第一次使用之前必須校驗。 3. 方法綜述 原則上，磁粉檢驗方法是指在工件受檢區(qū)域表面施加鐵磁粉，裂紋或其它缺陷會導致正常磁場畸變，使表面上的磁粉形成一定圖形，這些圖形通常是探測到的缺陷特征。 本規(guī)程適用于磁軛濕粉連續(xù)磁化法技術。更多免費資料下載請進： 好好學習社區(qū) ****** Co.,Ltd. 焊縫檢驗規(guī)程 3 Rev.:0 Page:1 of 7 Title: PROCEDURE FOR MAGNETIC PARTICLE EXAMINATION PROCEDURE FOR MAGNETIC PARTICLE EXAMINATION 磁 粉 檢 驗 操 作 工 藝 規(guī) 程 CONTROLLED 在控本 □ UNCONTROLLED 非在控本 □ COPY NO 副本編號： PREPARED BY 編制： DATE 日期： REVIEWED BY 審核： DATE 日期： APPROVED BY 批準： DATE 日期： 更多免費資料下載請進： 好好學習社區(qū) ****** Co.,Ltd. 焊縫檢驗規(guī)程 3 Rev.:0 Page:2 of 7 Title: PROCEDURE FOR MAGNETIC PARTICLE EXAMINATION DEMONSTRATION CERTIFICATION This is to certify that this procedure has been demonstrated on a test specimen with known defects to the satisfaction of the Authorized Inspector according to T150 of ASME Code Section V, as required by Appendix 6 of Section Ⅷ . Test Specimen No.: Demo. Report No.: NDE Level Ⅲ : AI: 更多免費資料下載請進： 好好學習社區(qū) ****** Co.,Ltd. 焊縫檢驗規(guī)程 3 Rev.:0 Page:3 of 7 Title: PROCEDURE FOR MAGNETIC PARTICLE EXAMINATION 1. General This procedure is applied to the magic particle examination of ferromagic materials and welds for ASME Code items. The magic particle examination method is suitable for detecting cracks and other discontinuities on or near the surface in ferromagic materials. This procedure is applied to wet continuous magization by yoke, which shall only be applied to detect discontinuities that are open to the surface of the part. This procedure shall be demonstrated to the satisfaction of the AI prior to implementation. 2. Personnel The NDE personnel who engage in magic particle examination shall be qualified and certified according to ****** Co.,Ltd.’s “Written Practice for NDE Personnel Training, Examination, Qualification amp。此法僅適用于檢出工件表面開口缺陷。 磁粉檢驗法的靈敏度以表面缺陷處為最高，并隨離表面深度的增加而迅速降低；因此，本方法僅適用于檢驗材料或部件的表面或近表面缺陷。 磁軛提升力的校驗 提升力用標準重塊提升法來校驗。 應使用宜興磁通探傷材料公司生產(chǎn)的黑磁粉 HK1400 或 350。濃度不當，會大大影響探傷結果。 6. 磁化過程 磁軛法 可采用直流的、交流的電磁軛或永久磁軛、來磁化一個局部區(qū)域、形成一個縱向磁場。 磁化方向 每一區(qū)域應至少進行兩次分別檢驗。如果銅板邊有清晰的磁粉線條，則表明磁場強度是足夠的。 可使用去污劑、有機溶劑、除繡劑、除繡液、去漆劑、蒸氣除油、噴沙或超聲波清洗等方法達到清潔的目的。 零件上的小開
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