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金属钢结构的喷砂工艺前期控制和磨料控制

发布时间:2015-12-3 10:20:14 浏览次数:659

磨料控制

喷砂除锈用砂要求颗粒坚硬、锐利、干燥(含水量< 2 %),及其他杂质的土;用石英砂的粗河沙可以;同时必须考虑砂材料的运输条件,价格高低。回收能力等因素;砂料颗粒直径为0.5~1.5mm当然,过滤器前必须晒的棚内,室内,筛孔大小:粗筛40~48球/ cm2 (입경1.2毫米)、细筛372 ~预防工/ cm2(粒度0.3mm)。


除锈方案确定后,研磨料添加河砂,石英砂或两者混合。除险南水库加固中经预喷比较的石英砂和河砂按1 1∶无端使用除锈效果好。


电气控制


喷砂前的涂装前钢材表面化根据等级、除锈等级》规定的基本物质表面金属化等级进行评估。仔细检查,清除焊渣、启动等附着物及清洁表面油脂及污物可溶的无用的东西,而且身体或焊接联接了妥善处理。



Abrasive control
Sand blasting sand requirements of soil granule hard, sharp, dry moisture content < 2%), and other impurities; can use quartz sand coarse sand; and must consider the conditions of transport of sand material, the price level. Recovery capability and other factors; sand particles diameter of 0.5 ~ 1.5mm, of course, before the filter must bask in the shed, indoor, screen mesh size: coarse 40 to 48 ball / cm2 (1.2 mm), fine screen 372 ~ prevention / cm2 (size 0.3mm).
Derusting plan, abrasive add sand, quartz sand or a mixture of both. For reservoir reinforcement by pre injection compared with quartz sand and river sand by 11: gratuitous derusting effect is good.
Electrical control


Prior to blasting prior to coating on the surface of the steel of assessed according to the grade, derusting grade "in accordance with the basic material of metal surface level. Careful inspection, removal of welding slag, start and other attachments and clean surface grease and dirt soluble useless things, and the body or welded joint properly handled.



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