推荐回答(3个)
钢结构防腐涂层施工工艺1范围本工艺规定了SHF-X12、SHF-H20、SHF-HCPE涂层系统,用于钢结构防腐的施工用材料、表面处理、涂料准备、涂覆工艺、检验与修复等项规则。本工艺适用于SHF-X12环氧富锌底漆、SHF-H20环氧防腐中间漆和SHF-HCPE高氯化聚乙烯防腐面漆的防腐施工工艺。2规范性引用文件下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件,其随后所有的修改单(不包括勘误的内容)或修订版均不适用于本标准,然而,鼓励根据本标准达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件,其最新版本适用于本标准GB8923-1988涂装前钢材表面锈蚀等级和除锈等级GB50212-2002建筑防腐蚀工程施工及验收规范GB50224–1995建筑防腐蚀工程质量检验评定标准3要求3.1材料:施工所需材料见表1表1材料名称牌号特点环氧富锌底漆(双组份)SHF-X12附着力好、具有良好的阴极保护作用,耐湿热性能优异,用作强腐蚀环境中的钢结构长效防腐底漆。环氧防腐中间漆(双组份)SHF-H20鳞片结构、封闭性好高氯化聚乙烯防腐面漆(单组份)SHF-HCPE对化工大气、酸、碱、盐类(60%H2SO4、20%烧碱、盐水、矿物油等)具有优异的防腐蚀性能。环氧稀释剂X-7溶解力强,挥发性适中高氯化聚乙烯稀释剂X-103.2涂层结构:底漆—底漆—中间漆—中间漆-面漆—面漆。3.3涂层厚度:180-200um。3底材的表面准备4.1钢铁表面应除油、采用喷砂除锈按GB8923等达到Sa2.5级。4.2用稀释剂擦洗表面,除去油污、尘土及其他杂质。5涂料的准备5.1搅拌将组分一充分搅拌,使上下层漆料均匀一致,无任何沉积物或结块存在。5.2混合将组分一与组分二按包装桶上注明的配比,准确称量,并在搅拌下将组分二倒入组分一中,再将两组分充分搅拌均匀。5.3调整粘度用专用稀释剂将漆料稀释至工作粘度:刷涂粘度为20-25s;喷涂粘度为18-22s。SHF-X12、SHF-H20用X—7稀释剂;SHF-HCPE用X—10稀释剂。5.4预固化配好的漆料静置预固化10-25min。必须6h内用完、避免浪费。6涂覆工艺6.1涂第一道底漆:钢结构喷砂处理后的4h内,进行涂装。用刷涂或滚涂的方法在经过表面处理的底面涂一层SHF-X12底漆,干燥4-12h,干膜厚度为30-40μm。6.2涂第二道底漆:涂第二层SHF-X12底漆,干燥4-12h,干膜厚度为30-40μm。6.3涂中间漆:在底漆上涂SHF-H20中间漆,干燥24h,干膜厚度为30-40μm。6.4涂第一层面漆:在中间漆上涂一层SHF-HCPE面漆,干燥4-12h,干膜厚度为30-40μm。6.5涂第二层面漆:再涂一层SHF-HCPE面漆,干燥24h,干膜厚度为30-40μm。6.6涂层总厚度为180-200μm。7d涂层完全固化。7质量检验7.1工序间检验:包括表面处理及各涂层间的检验。严格按自检——互检——专职检验进行每道工序检验。每道涂层应有明确的检验记录,涂层不允许有起泡、龟裂等现象存在,对不合格涂层应及时修补。7.2最终检验:涂层应连续、均匀、平整、无颗粒、无流挂或其他缺陷,颜色应均匀一致,厚度应达到要求。7.3修补:若漆层有露底或破损,应根据缺陷大小和严重程度,按第6章要求修补。7.4验收:按GB50212-2002、GB50224-95验收;每道涂层均要做好检验记录,发现漏涂等缺陷及时修补,最后一道涂层检验后由检验员报请业主做检验验收,并填写验收报告。8注意事项8.1施工现场应保持干净、通风良好、严禁明火。8.2涂料应用专用稀释剂稀释,不得用其他稀释剂代替。8.3应根据涂覆面积,计划配料,两个组分配好后,应当天用完,以防浪费。石家庄市特种油漆油墨厂卫恒工程师希望对你有所帮助
正确答案为:A,B,C选项 答案解析: A,B,C
一、底材清理。
确定好要进行涂装的基材表面后,是不可以立刻开始防锈油漆的施工的,所以首先要进行重要的一个步骤,那就是防锈油漆的底材清理。
二、底材打磨。
当底材达到清洁又干燥的表面状态后,还是不能开始防锈油漆的涂刷,还要进行底材的打磨,通常会选择手工或者喷砂的防锈油漆底材打磨法,让防锈油漆底材达到一定的粗糙感,其中喷砂处理要达到Sa2.5级,手工打磨标准为St3级。
三、防锈油漆涂刷施工。
刷涂、空气喷涂、高压无气喷涂、辊涂都是防锈油漆可供选择的施工方法,施工前将配套的防锈油漆稀释剂,进行均匀搅拌,一道防锈油漆干燥后,再进行第二道防锈油漆的涂装,如果还存在问题,再对防锈油漆漆膜继续打磨。无论选择喷涂还是刷涂方法进行防锈油漆涂装施工,都应注意防锈油漆的均匀喷刷,防止流挂和漏点发生。
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