钢管内壁防腐施工技术方案Anti—corrosion technique plan of the pipe’ s inner wall1. 施工工艺 construction technology喷砂除―►检验 T 底漆 T 检『面漆检验 T 喷涂标志—出厂Blast cleaning 一 inspection 一 primer 一 inspection 一 finishingcoat inspection-spraying mark-delivery2. 喷砂除锈 blast cleaning2。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 40-70 m;The pipe’ s inner face should reach the AWWAC210 97requirements after high pressure blast cleaning, and theroughness 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洁净，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 cleanedwith high pressure air before coating to ensure the surface norust, dust and others so as to keep the adhesion of paint filmand 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 coatedwithin 4 hours as soon as possible 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3 C 时，或高与 60 C 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 airis more than 85% and the surface temperature is less than 3°Cabove dew point or higher than 60C 。 The field operation shouldbe 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根据涂料使用说明书中的规定。The material adopted for inner wall anticorrosion is twocomponents epoxy anticorrosion paint, and the confectproportion should conform to the stipulation in the paintinstruction strictly。3。3 根据设计要求，采纳自动高压无气喷涂施工，确保涂装...
