無損檢測磁粉檢驗工藝規(guī)程(參考版)
2024-10-25 21:45本頁面
【正文】 報告形式見第 8 頁。 12. 記錄和報告 操作員必須記錄檢驗詳情和結(jié)果，必要時要用膠帶紙、照相或其他 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:7 of 7 Title: PROCEDURE FOR MAGNETIC PARTICLE EXAMINATION 12. Records and report The examination details and results shall be recorded by the operator. When necessary, the permanent records may be made by adhesive tape, photograph or other means. NDE report shall be prepared by the operator, reviewed by the NDE LevelⅡ or Ⅲ and approved by the Level Ⅲ prior to submission to the AI for acceptance. Report form, see Page 8 of 7. 方法作永久性記錄。 10. 退磁 當剩磁對零件附加工或使用有影響時，該零件在磁粉檢驗后應(yīng)及時進行退磁。 所有受檢表面不允許有如下缺陷顯示： a. 有效的線形顯示； b. 尺寸大于 3/16 英寸 ()有效的面形顯示； c. 一條直線上邊緣間隔等于或小于1/16in.()的 4 個或更多的有效的面形顯示。 d. 主要區(qū)域被積聚的不連續(xù)的磁粉遮蓋是不允許的，對這些區(qū)域應(yīng)重新檢驗。 b. 面形顯示是指一個圓形和橢圓的長度或等于寬度的 3 倍的顯示。 9. 顯示評定及合格標準 磁粉顯現(xiàn)評定 磁粉保留一段時間回顯示 出磁線，并不是所有顯示出來的都是缺陷，因受檢表面粗燥（如在熱影響區(qū)邊緣），導磁發(fā)生變化等原因，會產(chǎn)生類似于缺陷的顯示。 however, the size of the indication is the basis for acceptance evaluation. 10. Demagization When residual magism in the part could interfere with subsequent processing or usage, the part shall be demagized any time after pletion of the examination. 11. Cleaning Posttest cleaning is necessary where magic particle material could interfere with subsequent processing or usage. 受檢工件上經(jīng)返修的區(qū)域，應(yīng)按原來的檢驗程序重新檢驗。 c. four or more relevant rounded indications in a line separated by 1/16in.()or less, edge to edge。 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:6 of 7 Title: PROCEDURE FOR MAGNETIC PARTICLE EXAMINATION (at least 10%) to assure 100% coverage at the established sensitivity. The repaired area shall be reexamined according to the original examination procedure. The intensity of the visual light at the surface of the part /work piece undergoing examination shall be a minimum of 50fc (500lx). 9. Evaluation of indications and acceptance standards Evaluation of indications Indications will be revealed by retention of magic particles. All such indications are not necessarily imperfections, however, since excessive surface roughness, magic permeability variations (such as at the edge of heat affected zones), etc., may produce similar indications . An indication is the evidence of a mechanical imperfection. Only indications which have any dimension greater than 1/16in. () shall be considered relevant. a. A linear indication is one having a length greater than three times the width. b. A rounded indication is one of circular or elliptical shape with a lenth equal to or less than three times the width. c. Any questionable or doubtful indications shall be reexamined to determine whether or not they are relevant. d. Broad areas of particle accumulation which might mask indications from discontinuities are prohibited, and such areas shall be cleaned and re
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