第四部分 滲透探傷(PT)檢驗

1、第四部分 滲透探傷（PT）檢驗4 PT TEST1.適用范圍1, SCOPE本工藝規(guī)程適用于公司所生產(chǎn)的鑄件殼體、零部件的開口性缺陷檢測和評定。The technological specification is applied to open defect test and evaluation of casting shell and parts manufactured.2.編制依據(jù)2. BASIS OF COMPILATION2.1無損檢測人員資格鑒定與認(rèn)證GB/T9445；2.1 Qualification and certification for NDT GB/T9445；2.2

2、承壓設(shè)備無損檢測JB/T4730.5；2.2 NDT of Pressure equipments JB/T4730.5；2.3鑄鋼件滲透探傷及質(zhì)量評級方法GB9443；2.3 Steel casting penetrant test and quality rating method GB9443；2.4 公司閥門設(shè)計制造規(guī)程；2.4 Design and manufacture specification of corporate valves; 2.5 本公司無損檢測工藝和相關(guān)管理規(guī)定。2.5 NDT technology and relevent administrative cond

3、itions. 3. 一般規(guī)定3. General conditions3.1 檢測人員3.1 Personnel 從事滲透檢測的人員應(yīng) GB/T9445 和有關(guān)規(guī)程或技術(shù)文件的規(guī)定，經(jīng)培訓(xùn)、考核，并取得相應(yīng)的資格證書。操作人員應(yīng)具有 I 級或 I 級以上檢測資格，磁粉檢測報告應(yīng)由具有 II 級II 級以上檢測資格者簽發(fā)。 The personnel engaged in PT testing should be trained and tested as per the standard GB/T9445 or other equivalent specification, document

4、. Certificate should be obtained. Operating personnel should have testing qualification with level-I or level-I above, and magnetic particle testing report should be issued by the personnel with level-II or level-II above.3.1.12 檢測工作的人員其矯正視力不得低于 1.0，且不得有色盲；并每年檢查一次。2 The personnel, whose vision corre

5、ction shall not be lower than 1.0 and not be color-blind, should be tested once a year.4. 表面準(zhǔn)備4. Surface preparation4.1 工件表面不得有鐵銹、氧化皮、焊接飛濺、鐵屑、毛刺以及各種保護(hù)層。4.1 Product surface shall be no rust, oxide skin, welding spatter, scrap iron, burr or various protective layers.4.2 被檢工件機(jī)加工表面粗糙度 Ra12.5um，但對不能打磨的工件

6、可適當(dāng)放寬。4.2 Tested product machining surface roughness Ra12.5um, the product unpolished can be beyond the limit appropriately.4.3 局部檢測時，準(zhǔn)備工作范圍應(yīng)從檢測部位四周向外擴(kuò)展 25mm.4.3 By local test, scope of preparatory work should extend 25mm from the parts tested all around.5. 檢測時機(jī)5. Test time5.1 焊縫的磁粉檢測應(yīng)在焊接工序完成之后進(jìn)行。對有

7、延遲裂紋傾向材料的磁粉檢驗應(yīng)在焊完 24h 后進(jìn)行。5.1 Magnetic particle testing of welding seam should be done after welded. Magnetic particle testing with delay crack tendency materials should be done 24h after welded.5.2 除另有要求，對于緊固件和鍛件的磁粉檢測應(yīng)在最終熱處理之后進(jìn)行。5.2 Unless otherwise specified, magnetic particle testing of fastener

8、and casting should be done after the final heat treatment.5.4 檢測時機(jī)應(yīng)成熟，焊縫表面應(yīng)檢查合格，對有延遲裂紋傾向的材料應(yīng)在焊接完成 24 小時后進(jìn)行。5.4 Test time should be mature, weld surface should be qualified after tested, and magnetic particle testing with delay crack tendency materials should be done 24h after welded.6. 滲透檢測6. Penetr

9、ant testing6.1 基本程序6.1 Basic procedurea預(yù)清洗a. Pre-cleaningb施加滲透劑b. Applied penetrant c清洗多余的滲透劑c. Cleaning surplus penetrantd施加顯像劑d. Applied developere觀察及評定顯示跡痕 e. Obsavation and evaluation of trace displayed6.2 滲透檢測劑6.2 Penetrant test agenta滲透檢測劑一般包括滲透劑，乳化劑，清洗劑和顯像劑。a. Penetrant test agent generally i

10、ncludes penetrant, emulsifier, cleaner, developer.b根據(jù)我公司實際情況，滲透檢測劑一般使用噴罐式檢測劑，并應(yīng)向有生產(chǎn)資質(zhì)的廠商購買。b. According to the actual conditions of our company, penetrant test agent generally should be spray test agent, and we should purchase for the manufacturer with qualified producing.c滲透劑，顯像劑的質(zhì)量驗收可參照相關(guān)標(biāo)準(zhǔn)執(zhí)行。c. A

11、cceptance inspection of penetrant and developer quality can be carred out according to relevent standard.6.3 對比試塊6.3 Reference blocka對比試塊主要用于檢驗檢測劑性能及操作工藝，主要有鋁合金試塊和鍍鉻試塊。aReference block is mainly used in testing of test agent performance and handling technology, mainly including aluminium alloy block and chroming block.b對比試塊使用后要進(jìn)行徹底清洗，清洗時，通常是用丙酮仔細(xì)擦洗后，再放入裝有丙酮和無水酒精的混合液（混合比為 1：1）的密閉容器中保存，或使用其他等效方法保存。bReference block should be cleaned thoroughly after used. It i