1、-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方钢管内壁防腐施工技术方案Anti-corrosion technique plan of the pipes inner wall 1施工工艺 construction technology 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. 喷砂除锈 blast cleaning
2、2.1 管道内表面高压喷砂除锈达到 AWWAC210-97 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 pi
3、pes should be cleaned 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
4、to prevent the second rust.3. 钢管内壁喷涂 inner wall spray coating of pipes3.1 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 -专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方-专
5、业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方than 3 above dew point 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,
6、 and the confect proportion should conform to the stipulation 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 shou
7、ld be adopted so as to ensure the coating quality. While 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
8、coated when spraying within 150mm at the sides of welding seam.4. 成品管养护 production tube curing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-
9、10 days under 10,5-7 days under 20-30,3-5 days when the temperature is higher than 30.-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方5. 喷涂合格标志、编号、出厂。Qualified mark, No., and delivery6. 由于运输安装或其它原因造成的涂层损坏应及时修补。The coating damage because of transportation, installation and others
10、should be repaired timely.7质量检验 quality inspection防腐类型：钢管内壁采用环氧树脂涂料 执行规范：AWWAC210-97Anticorrosion 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frequency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
11、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
12、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% 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 o
13、thers on the pipes surface. The final cleanliness should be metal color.( SSPCSP6)2钢管内部清洁度The cleanliness of inner pipe B.调校表面轮廓对比仪 the surface profile 每天一次Once every 读数必须与仪器上的零位相吻合The readings must be accord with -专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方contrastive machin
14、e day zero position of the machine.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：钢管的前进速度钢管的旋转速度（V 旋转）The following parameters should be meas
15、ured 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 that allowed doing anticorrosion. The pipe number must be
16、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Inner wall mark and checkingC. 钢管表面检查Surface insp
17、ection 100%钢管100% pipes按照标准中的第 2A 和 2B 的要求执行就应该能达到满意的防腐效果According to the requirements of 2A,2B in the standard to check can reach the satisfied anticorrosion effect.A. 涂料体系：环氧树脂涂料Painting system: epoxy coating每一班首次涂漆都要做The first paint must be done in every shift如果钢管表面均匀、没缺陷、就能达到满意的防腐效果If the surfac
18、e of pipes has no defect, it can reach the satisfied anticorrosion effect.4内壁涂装作业测试Inner wall painting operation D. 湿态厚度测量Humidity thickness measurement每一班首次涂漆都要做The first 应该进行四次不同的测量。测量应选择在不同的部位4 different measurements should -专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方paint
19、 must be done in every shiftbe done, which should choose different locations.E. 干燥厚度测量Dry thickness measurement每一班首次涂漆都要做The first paint must be done in every shift应该进行四次不同的测量。平均干燥厚度必须等于或大于业主要求后度（单位：密耳）4 different measurements should be done, which the average dry thickness must not less than requir
20、ed thickness.D.粘合力测试Adhesion test只要以前各步骤都取得了满意的结果 if only the steps before got satisfied result应该按照 AWWA C210-97（5.2.3）的要求进行刀削测试。只要刀削掉的材料最大长度不超过 3.2 毫米时，测试就合格。Slicing test should be done as AWWA C210-97(5.2.3).If only the material length sliced is not exceed 3.2mm, the test can be regarded as qualif
21、ied.防腐类型：钢管内壁采用环氧树脂涂料Anticorrosion type: epoxy coating paint used in inner wall of pipe. 执行规范：AWWAC210-97Connector type: AWWAC210-97序号number阶段stage检查内容Inspection content频率frequency验收与拒收标准Acceptance and refusal standard4内壁涂层检查Inner wall coating inspectionE.开始前审核Auditing 只要以前各步骤都取得了满意的结果If only every
22、step can get satisfied result.以下是应该进行测量并需记录的参数：钢管的前进速度钢管的旋转速度（V 旋转）喷涂压缩机压力（压力）喷涂用的管嘴（管嘴）喷涂期间管嘴和管壁之间的距离The following parameters should be measured and recorded: the proceeding velocity,The pressure of spraying compressor, the nozzle used in spraying, the distance between nozzle and wall during sprayi
23、ng. -专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方A. 喷涂环氧树脂涂料Spraying epoxy coating100%的钢管100% pipe应该采用连续喷涂的方法来喷涂环氧树脂涂料，并且平均干燥厚度必须等于或大于业主要求后度（单位：密耳）。喷涂时钢管的温度必须在露点以上 3 摄氏度。Adopt continuous spraying to paint epoxy coating and the average dry thickness must not be less than the re
24、quired thickness. (Unit : mil ) the pipe temperature while spraying must be 3 above dew point.5内壁涂装作业Inner wall painting operationF. 原材料批控Raw material lot control所有批次的原材料All lot material钢管涂料中所使用的每一批原料都应在监控之中，以便于跟踪查找到钢管涂料的批次。Each raw material used in paint should be in monitoring so as to tracing the
25、 paint lot.A.直观检验 intuitive inspection100%的钢管100% pipes成品涂层表面必须均匀，没有下陷、重叠或者气泡。钢管两头必须留出 10 厘米的未涂区。The finished product coating surface must be uniform, no sink, lap or bubble. 10cm uncoated area Must be left at the both ends.G. 厚度测量Thickness measurement100%钢管100% pipes应按照第 2.C 部分的要求进行测量。平均干燥厚度必须等于或大于
26、业主要求后度（单位：密耳）Measurement should be done as the 2.C. the average dry thickness must not less than the required thickness.6内壁涂层检查Coating inspection for inner wallH. 硬度测量（铅笔硬度）Hardness measurement( pencil hardness)每班一次Once per shift涂层必须有韧性，用 F 铅笔至少能划 3 毫米长的线而没有划裂或没有擦伤The coating must have toughness,3mm
27、 line can be drawn with F pencil, but no -专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方-专业最好文档，专业为你服务，急你所急，供你所需-文档下载最佳的地方crack, scratchingI. 粘合力测试Adhesion test每班一次Once per shift应该按照 AWWA C210-97(5.2.3)的要求进行刀削测试。只要刀削掉的材料长度最大不超过 3.2 毫米，测试就为合格。Slicing test should be done as AWWA C210-97(5.2.3).If only the material
28、 length sliced is not exceed 3.2mm, the test can be regarded as qualified.J. 缺陷检测Defect test100%钢管100% pipe待涂层固化以后，要利用缺陷检测器在涂料技术规范中规定的电压下对钢管进行检测。After the coating solidifying, the pipe test should be done with defect detector under the specified voltage.7涂层修复Coating reparation修复 repair检测到缺陷的所有钢管All
29、pipes that have defects待修复的区域必须进行清理，除去缺陷。修复面必须平整、光滑、以保证涂层和原涂层一样。The area that need repaired must be blast cleaning and remove the defect. The repairing surface must be neat, smooth to keep the coating accord with original coating.8修复检查Repairing and checkingA. 测量涂层厚度Measure the thickness of coating所有修复的钢管All revised pipe每次修复至少应进行两次测量。平均干燥厚度必须等于或大于业主要求后度（单位：密耳）。Every revision should do twice measurements.
