無損檢測磁粉檢驗工藝規(guī)程-文庫吧
2025-09-17 21:45 本頁面
【正文】 Magizing Equipment with an ammeter shall be calibrated at least once a year， or whenever the equipment has been subjected to a major electric repair, periodic overhaul or damage. If equipment has not been in use for a year or more, calibratioon shall be done prior to first use. Calibration for lifting power of the Yoke The lifting power will be calibrated with the methods of lifting a standard weight cake. Each alternatingcurrent electromagic yoke shall have a lifting power of at least 10lb(44N). at the maximum pole spacing. Each directcurrent electromagic yoke shall have a lifting power of at least 40lb(177N). at the maximum pole spacing. 5. Examination Medium The examination medium shall be the finely divided 1. 概述 本規(guī)程適用 于 ASME 規(guī)范產(chǎn)品鐵磁性材料和焊縫的磁粉檢驗。 磁粉檢驗方法適用于在鐵磁性材料表面或其附近探測裂紋和其它不均勻性缺陷。 本規(guī)程適用于磁軛濕粉連續(xù)磁化法技術(shù)。此法僅適用于檢出工件表面開口缺陷。 本規(guī)程在執(zhí)行之前須通過演示，使 AI 審查滿意。 2. 人員 從事磁粉檢驗的 NDE 人員必須是根據(jù)南京寶色鈦業(yè)有限公司NDE 人員培訓，考試，資格鑒定和認證實施細則 (資料號： QCD011)進行考試和資格任命的合格人員。 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。 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。 4. 磁化設(shè)備校驗 MT 設(shè)備采用 CDX4型磁軛式探傷儀。 設(shè)備校驗 校驗周期：每一帶電流表的磁化設(shè)備至少應每年校驗一次；設(shè)備進行過重要電源修理，周期大修或損壞時，必須得到校驗。如果設(shè)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。 磁軛提升力的校驗 提升力用標準重塊提升法來校驗。交流電磁軛提升力至少為10lb(44N)(最大磁軛間距 )。直流電磁軛提升力至少為 40lb(177N)( 最大磁軛間距 )。 5. 檢驗介質(zhì) 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:4 of 7 Title: PROCEDURE FOR MAGNETIC PARTICLE EXAMINATION ferromagic particles which have high permeability and low retentivity. The size and shape of the magic particles shall be suitable for forming magic particle indications. The black magic particles HK1400or 350, made by yixin Citong Co Ltd., shall be used. The fluid medium for the magic suspension fluid shall be transformer oil, smelless kerosene or water. The temperature of the wet particle suspension and the surface of the part shall not exceed 1350F(570C). Concentration of wet magic particle suspensions The initial bath concentration of suspended magic particles should be as specified of as remended by the manufacturer and should be checked by settling volume measurements and maintained at the specified concentration on a daily basis. If the concentration is not maintained properly, test results can vary greatly. The bath concentration shall be maintained within to ml per 100ml of vehicle for nonfluorescent particles unless otherwise specified by the particle manufacturer. Bath concentration is normally determined by measuring its setting volume through the use of an ASTM Pearshaped centrifuge tube with a stem( divisions )for nonfluorescent suspensions. Before sampling, run the suspension through the recirculating system for at least 30min to assure thorough mixing of all particles which could have settled on the sump screen and along the sides or bottom of the
公司管理相關(guān)推薦
鄂ICP備17016276號-1