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金属钢结构的喷砂工艺的环境控制和工艺控制

发布时间:2015-9-23 9:41:07 浏览次数:710
环境控制
鉴于水工金属结构喷砂除锈为露天作业,施工时除应注意防尘和环境保护,还必须每日检测施工现场环境温度、湿度和金属表面的温度,计算当日露点,做好施工记录。当空气相对湿度大于85%、金属表面温度低于露点以上3℃时不得施工。
工艺控制
喷砂用的压缩空气必须经冷却装置及油水分离器处理,以保证干燥、无油;油水分离器必须定期清理。

喷嘴到基体钢材表面距离以100~300mm为宜,喷砂前对非喷砂部位应遮蔽保护。



Environmental control

Blast in view of the hydraulic metal structure for outdoor operation, in addition to the dust prevention and environmental protection should be paid attention to during the construction, must also be daily testing construction site environment temperature, humidity and the temperature of metal surface, calculate the dew point, completes the construction record. When the air relative humidity is more than 85%, the metal surface at less than 3 ℃ above the dew point temperature shall not construction.

Process control

Sand blasting with compressed air must be through the cooling device and the processing of oil-water separator, to ensure that the dry, no oil; Oil and water separator must be cleaned regularly.

Distance from the surface of the nozzle to the substrate steel 100 ~ 300 mm advisable, sandblasting before for the sandblasting parts should cover protection.




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