无损检测工艺规程(液体渗透)

Post Cleaning
后清洗 图 4.1 4.2 表面制备 所有渗透检验前，被检工件表面及其附近至 少为 1 英寸(25.4mm)的区域内都应干燥清洗 干净，不得有任何脏物、纤维屑、氧化皮、 焊剂、油和其它外来物。必要时，应对表面 进行打磨或机加工。 4.3 预清洗 4.3.1 在施加渗透剂之前，被检区域及其附 近至少为 1 英寸(25.4mm)的区域内均需用清 洁剂进行清洗。 4.3.2 清洗后，通过适当的方法(自然挥发或 人工通风)，对被检表面进行干燥；最少干燥 的时间以保证在施加渗透剂之前清洁剂已完 全挥发为界。 4.4 施加渗透剂 4.4.1 可以用浸渍、涂刷或喷涂等任一合适 的方法，在被检工件
3.3 当检验奥氏体不锈钢或钛材时， 必 须根据 ASME 规范第Ⅴ卷 T-641(b)中的 程序，对所有材料分别分析氯和氟的含 量。残留氯和氟总含量不得超过残留物 重量的 1%，必须有制造厂相应的合格 证。 3.4 当检查镍基合金时，必须按照 ASME 规范第Ⅴ卷 T-641(a)中的程序， 对所有材料分别分析硫含量。硫含量不 得超过残留物重量的 1%。 必须有制造厂 相应的合格证。
制造厂 上海沪 船助剂 厂
材料 渗透剂 显像剂 清洗剂
牌号 HD-RS HD-XS HD-BX
3.3 When examining austenitic stainless steel or titanium, all materials shall be analyzed individually for chlorine and fluorine content in accordance with the procedure shown in T-641(b) of ASME Code Section V. The total chlorine plus fluorine content shall not exceed 1%of the residue by weight. The certificate of compliance from manufacturer shall be obtained. 3.4 When examining nickel base alloys, all materials shall be analyzed individually for sulphur content in accordance with the procedure shown in T-641(a) of Section V.The sulphur content shall not exceed 1%of the residue by weight. The certificate of compliance from manufacturer shall be obtained. NJBST Co.,Ltd. QCD-015 v.:0
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 ASME Code Section V, T-150 as required by the Section Ⅷ Div.1, Appendix 8.
Test Specimen No.:
Demo. Report No.:
NDE Level Ⅲ: AI:
NJBST Co.,Ltd.
QCD-015
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1． 概述 1． 本规程适用于 ASME 规范产品金 1 属材料和焊件着色液体渗透检验。 1．2 本规程仅适用于探测材料或焊件 表面开口类缺陷。 1．3 本规程在执行之前，须演示至 AI 满意。 2． 人员 2.1 从事液体渗透检验的人员必须是 根据南京定色钛业有限公司<<NDE 人 员培训、 考试、 资格认证实施细则>>(资 料号： QCD-011)进行考试和资格任命的 合格人员。 3. 渗透材料 3.1 渗透材料包括检验过程中使用的 所有渗透剂、 溶剂或清洗剂、 显像剂等。 3.2 液体渗透探伤材料，必须是指定 的和推荐的，见表 3.2。检验使用的材 料必须是同一类型的。不允许用不同类 型的或不同制造厂的渗透材料混合使 用 表 3.2
NJBST Co.,Ltd.
QCD-015
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Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATION
PROCEDURE FOR LIQUID PENETRANT EXAMINATION 液 体 渗 透 检 验 工 艺 规 程
CONTROLLED 在控本□ UNCONTROLLED 非在控本□ COPY NO 副本编号：
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Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATION
4. Examination Procedure 4.1 Examination Flow Chart as shown in Fig.4.1.
4. 检验程序 4.1 检验程序流程图见图 4.1
Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATION 1. General 1.1 This procedure is applied to dye liquid penetrant examination of metal material and weldment for ASME Code items. 1.2 This procedure is only suitable for detecting the defects that are open to the surface of material or weldment. 1.3 This procedure shall be demonstrated to the satisfaction of the AI prior to implementation. 2. Personnel 2.1 The personnel engaged in the penetrant examination shall be qualified and certified in accordance with the requirement of NJBST Co., Ltd.’s“Written Practice for NDE Personnel Training Examination, Qualification and Certification”(No.:QCD-011). 3. Penetrant Materials 3.1 The penetrant materials is intended to include all penetrants, solvents or cleaning agents, developers, etc, used in the examination process. 3.2 The liquid penetrant examination materials shall be designated and recommended, as shown in Table 3.2. The materials used for examination shall be the same type. Intermixing of penetrant materials from different families or different manufacturers is not permitted. Table 3.2 Manufacturer Material Model Shanghai (Ship Brand) Penetrant Developer Cleaning Agent HD-RS HD-XS HD-BX
Fig. 4.1
4.2 Surface Preparation Prior to all penetrant examination, the surface to be examined and all adjacent areas within 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 prepared by grinding or machining. 4.3 Precleaning 4.3.1 The areas to be examined and adjacent areas within at least 1in. (25.4mm) shall be 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 with forced air, as appropriate. The minimum drying time shall ensure that the cleaning solution has evaporated prior to application of the penetrant. 4.4 Penetrant Application 4.4.1 The penetrant may be applied on the surface NJBST Co.,Ltd. QCD-015
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Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATION of workpieces to be examined by any suitable means such as 表面施加渗透剂。 4.4.2 在整个检验期间，渗透剂和被 dipping, brushing or spraying. 4.4.2 The temperature of the penetrant and the surface to be 检表面的温度不得低于 examined shall not be below 500F(100C) nor above 1250F(520C) 500F(100C)，不得高于 1250F throughout the examination period. When it is not practical to (520C)。当在上述温度范围内不能满 conduct a liquid penetrant examination within above temperature 足时，则按照 ASME 规范第 V 卷 range, the examination procedure at the proposed lower or higher T-653，对提议采用的温度范围，使用 temperature range shall be qualified using a quench cracked 有淬火裂纹的铝试块进行验证。 4.4.3 严格控制渗透时间，最小滞留 aluminum block according to ASME Code Section V, T-653. 4.4.3 Penetration time is critical. The minimum dwell time is 时间见表 4.4.3。适当的温度条件下， shown in Table 4.4.3. For suitable temperature, the area being 在滞留时间内，被检区域必须用渗透 examined shall remain wetted by the penetrant for the dwell 剂保持潮湿。 表 4.4.3 推荐的最少滞留时间 time. Table 4.4.3 Recommended minimum dwell times
PREPARED BY 编制： REVIEWED BY 审核： APPROVED BY 批准：
DATE 日期： DATE 日期： DATE 日期：
NJBST Co.,Ltd.
QCD-015
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Title: PROCEDURE FOR LIQUID PENETRANT EXAMINATION
Surface Preparation
表面制备
Precleaning and Drying
预清洗，干燥
Penetrant Application
施加渗透剂
Cleaning
清洁
Drying
干燥
Development and Inspection
显像、检验
Evaluation and Record
评定、记录