無損檢測工藝規(guī)程液體滲透

1、NJBST Co.,Ltd.QCD-015Rev.:0Page:1 of 8Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATIONPROCEDURE FOR LIQUID PENETRANT EXAMINATION液體滲透檢驗工藝規(guī)程CONTROLLED 在控本口UNCONTROLLED非在控本口COPY NO副本編號：PREPARED BY制：DATE日期:REVIEWED BY審核：DATE日期：APPROVED BY批準：DATE日期：NJBST Co.,Ltd.QCD-015Rev.:0Page:2 of 8Title: PROCEDURE

2、FOR LIQUID PENETRANT EXAMINATIONDEMONSTRATION CERTIFICATIONThis is to certify that this procedure has been demonstrated on atest specimen with known defects to the satisfaction of the AuthorizedInspector according to ASMEDodeSection V, T-150 as required by the Section WDiv.1, Appendix 8.Test Specime

3、n No.:Demo. Report No.:NDE Level m : AI:NJBST Co.,Ltd.QCD-015Rev.:0Page:3 of 8Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATION1. General1 .概述This procedure is applied to dye liquid penetrant examination of metal material and weldment for ASME Code items.This procedure is only suitable for detecting

4、 the defects that are open to the surface of material or weldment.This procedure shall be demonstrated to the satisfaction of the AI prior to implementation.2. Personnel2.1The personnel engaged in the penetrantexamination shall be qualifiedand certified inaccordance with the requirement of NJBSTCo.,

5、 Ltd. s“ Written Practice for NDE Personnel TrainingExamination,QualificationCertification (No.:QCD-011).3. Penetrant Materialsand3.1Theenetrant materials is intendedto. 1本規(guī)程適用于 ASM覬范產品金 屬材料和焊件著色液體滲透檢驗。. 2本規(guī)程僅適用于探測材料或焊件 表面開口類缺陷。. 3本規(guī)程在執(zhí)行之前，須演示至AI滿意。.人員從事液體滲透檢驗的人員必須是 根據(jù)南京定色鈦業(yè)有限公司 (資料號：QCD-011)進行考試和資格

6、任命的 合格人員。. 滲透材料滲透材料包括檢驗過程中使用的 所有滲透劑、溶劑或清洗劑、顯像劑等。液體滲透探傷材料，必須是指定 的和推薦的，見表 3.2。檢驗使用的材 料必須是同一類型的。不允許用不同類 型的或不同制造廠的滲透材料混合使include all penetrnts, solvents or cleaning agents,developers, etc, used in the examination process.3.2 The liquid penetrant examination materialsshall be designated and recommended,a

7、s shownin Tablet ,制造廠材料鹿號衣3.2上海滬滲透劑HD-RS船助劑顯像劑HD-XS廠清洗劑HD-BX3.2. The materialsused for examination shall be thesame type. Intermixing of penetrant materials from different families or different manufacturers is notpermitted.Table 3.2 ManufacturerMaterialModelShanghaiPenetrantHD-RS(Ship Brand)Develop

8、erHD-XS3.3當檢驗奧氏體不銹鋼或鈦材時，必須根據(jù)ASM覬范第V卷T-641(b)中 的程序，對所有材料分別分析氯和氟的 含量。殘留氯和氟總含量不得超過殘留 物重量的1%必須有制造廠相應的合格 證。Cleaning AgentHD-BX3.3 When examining austenitic stainless steel or3.4當檢查饃基合金時，必須按照ASME 規(guī)范第V卷T-641(a)中的程序，對所有 材料分別分析硫含量。硫含量不得超過 殘留物重量的1%必須有制造廠相應的 合格證。titanium,all materialsshall be analyzedindividua

9、lly for chlorine and fluorine content in accordance with the procedure shown in T-641(b) of ASMEDode Section V. The total chlorine plus fluorine content shall not exceed 1%of the residue by weight.The certificate of compliance from manufacturer be obtained.3.4W商悔躲陽陽0n nickebase alloys,materials shal

10、l be analyzed individually for sulphur content in accordance with the procedure shown in 丁-6414 of SecteaNVTnfeDuiinphur content shall not exceed 1%of the residue by weight. The certificatecompliance昨0佻胸汜取胡曲班到shall be obtained.表向制備預清洗，干燥施加滲透劑shallallofNJBST Co.,Ltd.QCD-015Cleaningtle: PROCEDURE FOR

11、LIQUID PENETRAN4. Examination ProcedurePage:4 of 8T EXAMINATION幣吉Rev.:04.1Fig.4.1.ExaminationFlow-Chart as shown inDrying4.檢驗程序4.1檢驗程序流程單僚圖4.1Development and Inspection顯像、檢驗評定、記錄Evaluation and RecordPost Cleaning后清洗4.2圖4.1表面制備Fig. 4.14.2 Surface PreparationPrior to all penetrant examination, surface

12、 to be examined and all adjacent areasthe所有滲透檢驗前，被檢工件表面及其附近至 少為1英寸（25.4mm）的區(qū)域內都應干燥清洗 干凈，不得有任何臟物、纖維屑、氧化皮、 焊劑、油和其它外來物。必要時，應對表面 進行打磨或機加工。cleaned using cleaning agent before the penetrant is applied.4.3.2 After cleaning, drying of the surface to be examined shall be accomplished by normal evaporation or

13、 with forced air, as appropriate.The minimum drying time shall ensure that the cleaning solution has evaporated prior to application of the pepetrant.4.那能隔trant Applcation F0rmDwell Times (min)4.4.1 The penetrant may be appliednetr0nt DeveloperCastings & weldsQCD-015Wrought material- e TxtiesiOnR0cg

14、EDUREFOR0LIQUID PfNETsuitablemeanssuchas dipping, brushingor spraying.4.4.2 The temperature of the penetrant and the surface to be examined shall not be below 500F(10C) nor above125F(52C) throughout the examination period. When itexamination procedure at the proposed lower or higher temperature rang

15、e shall be qualified using a quench cracked aluminum block according to ASME Code Section V, T-6 Penetration time is critical. The minimumdwell time is shown in Table 4.4.3. For suitable temperature, the area being examined shall remain wetted by the penetrant for the dwell time.Table 4.4.3

16、Recommended minimum dwell timesbeRev材料型式滯留時間(min)滲透劑顯象劑鋁、鎂、鑄件和焊縫57)鋼、黃銅、Page:5of 8nTExA他TON1b板材107penetrantrange,thewithin at least 1in. (25.4mm) shall be dry and free of dirt, grease,lint, scale, welding flux, weld spatter , paint , oil and other extraneous matter. If necessary, surface shall be pr

17、epared by grinding or machining.4.3 PrecleaningThe areas to be examined and adjacent areas within at least 1in. (25.4mm) shall surfaceAluminum, magn-NJBSTCob囹5 or bronze, titanium and high temperatureofalWysrkpieces to Ipafexamined by any is not practical to conduct a liquid examination within above

18、 temperature在施加滲透劑之前，被檢區(qū)域及其附 近至少為1英寸(25.4mm)的區(qū)域內均需用清 潔劑進行清洗。清洗后，通過適當?shù)姆椒?自然揮發(fā) 或人工通風),對被檢表面進行干燥；最少干 燥的時間以保證在施加滲透劑之前清潔劑已 完全揮發(fā)為界。施加滲透劑可以用浸漬、涂刷或噴涂等任一合適 的方法，在被檢工件在整個檢驗期間，滲透劑和被檢表面的溫度不得低于500F(10 0C),不得高于 1250F(52 0C)O當在上述溫度范圍內不能滿足時，則按照ASM覷范第V卷T-653 , 對提議采用的溫度范圍，使用有淬火 裂紋的鋁試塊進行驗證。嚴格控制滲透時間，最小滯留時間見表4.4.3 。適當?shù)臏囟?/p>

19、條件 下，在滯留時間內，被檢區(qū)域必須用 滲透劑保持潮濕。表4.4.3推薦的最少滯留時間Excess Penetrant RemovalExcess solvent removable penetrant shall be removed by wiping with a cloth or absorbent paper. The remaining traces shall be removed by lightly wiping the surface with a cloth or absorbent paper moistened with solvent. To avoid over

20、removing, flushing the surface with solvent shall be prohibited.Developer ApplicationThe developer shall be applied as soon as possible after excess penetrant removal and drying surface. The surface may be dried by normal evaporation before the developer is applied. The drying time shall be within 5

21、 to 20 min.The developer shall be applied by spraying. A uniform thin coating shall be provided and the coating thickness shall be suitable.Prior to applying wet developer to the surface, the developer must be thoroughly agitated.Dipping or flooding the part with non-aqueous developer is prohibited,

22、 since it will dissolve the penetrant in the discontinuities through its solvent action.InterpretationDeveloping time for final interpretation begins多余滲透劑的清除多余滲透劑必須用布或吸紙擦去， 剩下的痕跡必須用蘸后溶劑的布或 紙在表面輕輕地擦去。為了防止清洗 過分，禁止用溶劑清洗表面。施加顯像劑多余的滲透劑被清除且工件干燥后，必須盡快地施加顯像劑。顯 像劑施加之前，工件表面可以自然揮 發(fā)干燥，干燥時間必須在5-20分鐘以內。施加顯像劑必須采用噴

23、涂法， 薄且均勻，涂層厚度適中。在施加濕型顯像劑至工件表 面之前，顯像劑必須充分攪拌。禁用非水濕顯像劑浸漬或灌 洗工件，因非水濕顯像劑會通過溶解 作用將缺陷中的滲透劑溶解掉。判斷最終判斷顯像時間應從施加NJBST Co.,Ltd.QCD-015Rev.:0Page:6 of 8Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATIONas soon as a wet developer coating is dry. The minimum developing time shall be 7min.Final interpretation shall

24、be madewithin 7 to 60 min after the requirements of Para. 4.7.1 are satisfied.The developing trace can be examined either by natural light or artificial light. A minumum lightintensity of 50 fc (500Lx) is required to ensure adequate sensitivityduring the examination andevaluation of indications.The

25、surface shall be divided into several parts to be examined if the surface is so large that the干顯像劑后或從濕顯像劑涂層干燥后 立即起算，不得少于7分鐘。在滿足4.7.1要求后，最終判 斷必須在7-60分鐘內作出。顯像痕跡可以通過自然光或人 工白光進行檢驗，要求最小燈光強度 為50fc(500LX),以保證在檢驗和評價 顯示過程中有充分的靈敏度。如果受檢表向太大，無法在規(guī) 定時間內完成檢驗，則應將表面分成 幾個部進行檢驗。顯像情況可以用肉 眼或放大鏡進行觀察。4.8后清洗檢驗后，必須完全清除工件上的滲

26、透examination can not be finished within the given time. The developing condition can be observed either by eyes or by means of a magnifier.4.8 Post-cleaningThe penetrant materials shall be clearly removed away from parts after examination. The post cleaning must be performed if remaining penetrant m

27、aterials can result in corrosion by the combination with other materials during the operation.The suitable cleaning process shall be adopted for post cleaning such as flushing with water, mechanical cleaning, solvent soaking, etc.The developer shall be cleaned as soon as possible after examination i

28、f the part requests the post cleaning so as to avoid it condensed on the part.Evaluation of IndicationsBroad areas of pigmentation which could mask indications of discontinuities are unacceptable and such areas shall be cleaned and reexamined.An indication is the evidence of a mechanical imperfectio

29、n. Only indications with major dimensions greater than 1/16in(1.6mm) shall be consideredrelevant.Linear indications are those indications in which the length is more than three times the width . Rounded indications are indications which are circular or ellipsoidal with the length less than three tim

30、es the width.Any questionable or doubtful indications shall be reexamined to determine whether or not they are relevant. Surface conditioning may proceed before the reexamination.The indication of a discontinuity may be larger than the discontinuity that causes it; however, the size of the indicatio

31、n is the basis of acceptance or rejection.Acceptance StandardsThe following relevant indications are unacceptable: a. any cracks or relevant linear indications;relevant rounded indications greater than 3/16in. (4.8mm);材料，如果殘余滲透材料在操作過程 中與其它材料混合后會導致腐蝕，則 必須進行后清洗。可以采用如用水沖 洗、機械清潔、溶劑浸泡等適當?shù)那?潔工作，來進行后清洗。如果需要后清洗，則檢驗后必須盡快 進行，以免顯像劑凝固在工件上。. 顯示評價大面積顏料沉淀會掩蓋缺陷顯 示，是不合格的，這些區(qū)域