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1、钢管内壁防腐施工技术方案Anti-corrosion technique plan of the pipes inner wall 1 1施工工艺施工工艺 constructionconstruction technologytechnology 喷砂除锈 检验 底漆 检验 面漆 检验 喷涂标志 出厂Blast cleaninginspectionprimerinspectionfinishing coatinspectionspraying markdelivery 2.2. 喷砂除锈喷砂除锈 blastblast cleaningcleaning 2.1 管道内表面高压喷砂除锈达到 AWW
2、AC210-97 规定要求，表面粗糙度达到 40-70m；The pipes inner face should reach the AWWAC210-97 requirements after high pressure blast cleaning, and the roughness of surface should reach 40-70um.2.2 除锈后涂装前的管道表面应用高压空气吹除干净，保证管道表面无锈、无尘或其它表面附着物，确保漆膜和钢管表面的附着力。After basting cleaning, the surface of pipes should be cleaned
3、 with high pressure air before coating to ensure the surface no rust, dust and others so as to keep the adhesion of paint film and the surface of pipes. 2.3 除锈后合格的管道，在 4 小时内尽快涂装，以防止二次生锈。The qualified pipes after blast cleaning should be coated within 4 hours as soon as possible to prevent the second
4、 rust.3.3. 钢管内壁喷涂钢管内壁喷涂 innerinner wallwall sprayspray coatingcoating ofof pipespipes3.1 当空气中的相对湿度大于 85%、钢管表面温度低与在大气露点以上 3C 时，或高与 60C 时禁止施工作业。室外作业，当风速大于3m/S，禁止施工。Operation should be forbidden when the relative humidity in air is more than 85% and the surface temperature is less than 3 above dew poin
5、t or higher than 60.The field operation should be forbidden when the wind velocity is more than 3m/s.3.2 内壁防腐选用的是双组分环氧玻璃磷片防腐蚀涂料，配制比例熟化时间应严格按照涂料使用说明书中的规定。The material adopted for inner wall anticorrosion is two components epoxy anticorrosion paint, and the confect proportion should conform to the sti
6、pulation in the paint instruction strictly.3.3 按照设计要求，采用自动高压无气喷涂施工，确保涂装质量，喷涂时，喷嘴轴线与管体角度保持 80-90，枪口距离管体表面约500-600mm，喷枪移动速度应均匀，保证涂层平整，光滑、均匀、饱满。焊缝两侧 150mm 范围内，在喷涂时不涂底漆。According to the design requirement, automatic high pressure airless spraying should be adopted so as to ensure the coating quality. Wh
7、ile painting, the nozzle-axis should be keep 80-90with tube. The distance between muzzle and tube should be 500-600mm; the spraying pistol moving velocity should be uniform to keep the coating smooth, neat, uniform, satiation.Primer should not be coated when spraying within 150mm at the sides of wel
8、ding seam.4.4. 成品管养护成品管养护 productionproduction tubetube curingcuring完成涂装的成品管，在养期内避免暴晒和雨淋，养护时间一般环境温度在 10C 以下时养护 6-10 天，20C-30C 时养护 5-7 天，30C 以上时养护 3-5 天。The production tube that has painted should prevent insolation and drench during the maintenance period which should be 6-10 days under 10,5-7 days
9、under 20-30,3-5 days when the temperature is higher than 30.5.5. 喷涂合格标志、编号、出厂。喷涂合格标志、编号、出厂。QualifiedQualified mark,mark, No.,No., andand deliverydelivery6.6. 由于运输安装或其它原因造成的涂层损坏应及时修补。由于运输安装或其它原因造成的涂层损坏应及时修补。TheThe coatingcoating damagedamage becausebecause ofof transportation,transportation, installa
10、tioninstallation andand othersothers shouldshould bebe repairedrepaired timely.timely.7 7质量检验质量检验 qualityquality inspectioninspection防腐类型：钢管内壁采用环氧树脂涂料 执行规范：AWWAC210-97 Anticorrosion type: epoxy coating adopted for the inner wall connector type: AWWAC210-97 序 号 No.阶段 phase检查内容 Inspection contents频率 f
11、requency验收与拒收标准 Acceptance and refusal standardA.检查文件资料 document逐批检查 each lot每批都必须带有产品质量合格证 Every lot product should have the certification of fitnessB.包装检查 packing逐批检查 each lot材料必须正确包装，防止损坏 The material must be packed correctly to prevent damage.C.批次控制 Lot control逐批检查 each lot每一批材料必须有单独的编号，以便 在整个处理
12、过程中容易识别与跟踪查 找 every lot material must have independent number for easy identifying and tracing .1环氧树脂涂 料接收检查 Epoxy coating acceptance checkingD.原材料存放 Raw material storage所有原材料 All material所有原材料应封闭包装并存放在干燥 的地方 all material should be sealed package and stored in dry place.A.清洁程度 cleanliness100%钢管 100%
13、 pipe钢管表面不得有油、油脂、灰、土、 锈、油漆、鳞片及其它杂物，最终清 洁度必须呈金属本色（SSPCSP6) There is no oil, grease, dust, rust, paint and others on the pipes surface. The final cleanliness should be metal color.( SSPCSP6) B.调校表面轮廓对比仪 the surface profile contrastive machine每天一次 Once every day读数必须与仪器上的零位相吻合 The readings must be accor
14、d with zero position of the machine.2钢管内部清 洁度 The cleanliness of inner pipe C.测量表面轮廓 Measure the surface profile100%钢管 100% pipe测量至少必须是 1.5 密耳 The measurement must be 1.5 thou at least.D.开车前审核 Audit before driving只要以前的 各项工作都 取得满意的 结果 If only all works got satisfied result.以下是应该进行测量并需记录的参数： 钢管的前进速度 钢
15、管的旋转速度（V 旋转） The following parameters should be measured and recorded: the proceeding velocity of pipes, the rotary speed of pipes ( V type) A. 钢管编号 Pipe number所有验收的 钢管 100%都 做 All accepted pipe 需要做防腐涂层的钢管都必须有表明 已经获准进行防腐处理的标记。钢管 编号必须标注在钢管内部。 The pipes needed anticorrosion coating must have the mark
16、that allowed doing anticorrosion. The pipe number must be marked in the pipe.B. 开始清理之前钢管 表面检查 The surface inspection before cleaning所有批次 100%都做 All lot 钢管所使用的每一批防腐原材料都应 在监控之中，以便能够跟踪查找钢管 所使用的每一批涂料 Every lot anticorrosion raw material pipe used must be monitored so as to tracing and checking every paint used.3内壁标记和 检查
