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Construction spraying method of Xinjiang steel structure fireproof coating

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Construction spraying method of Xinjiang steel structure fireproof coating

来源: http://haoyi007.com点击: Date: 2019-11-21 00 : 00Source : http : //haoyi007.comClick :

1. The paint mix and Xinjiang steel structure fireproof paint configuration and mixing should be used at the same time. The paint must be used within the time specified in the specification. Mix evenly and uniformly, with moderate consistency, which can not only flow smoothly in the tube, but also not flow and fall off after spraying.

Second-level treatment:

Thorough removal of dirt, grease and rust steel before construction application ensures a clean and dry surface of the base steel. Check that the steel has been completely rust-proof and brushed and dried. Steel connections, 4-12mm wide gap or fire-resistant coating applied to the level of silicate fiber cotton filling blocks.

Three, Xinjiang steel structure fireproof coating spraying:

Spray primer. In order to improve the bonding strength between the coating and the steel beam base, a small amount of water-based glue is added to the bottom mud, generally 0.4kg / m2 or according to the product specifications, the thickness of the spray is about 5mm. The surface of the coating has obvious papillae and pits, and should be smoothed with a spatula.

Spray test and make samples before spraying. Parameters such as optimal spraying pressure, spraying distance, and spray gun moving speed were determined through experimental spraying, and after large-scale spraying was compared with the standard sample, large-area spraying was possible.

When spraying Xinjiang steel structure fireproof coating, the spray gun should be perpendicular to the surface of the sprayed steel component, the spray distance should be 6 or 10mm, and the spray gun should be maintained at 0.4 or 0.6MP. The running speed of the spray gun should be stable and cannot be kept in the same position for a long time to avoid the accumulation and flow of paint. During spraying, the dosing and feeding of the sprayer should be carried out continuously without stopping.

After the surface is dry (primer 24 hours after the primer is applied), spray the surface coating with a coating thickness of 10mm. For obvious irregularities, smooth the blade before application to ensure a uniform and smooth coating surface.

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Related tags: Xinjiang

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