The coating adopts Guoerjia steel oiled 305 1 antirust and anticorrosive coating. All components shall be derusted at the production site and painted with two coats of primer and one coat of paint, and the other two coats of paint shall be painted after installation and civil construction.
First, the process flow:
Cleaning the surface of the substrate-primer coating-first topcoat coating-second and third topcoat coating.
Second, the base surface cleaning:
According to the design requirements, derusting level and actual construction experience, this project can adopt manual mechanical derusting, grinding machine, wire brush and emery cloth for derusting, and the roughness console formed on the surface is about 40 microns. Clean up the rust, welding slag, welding slag, oil stain, dust and other sundries on the coating part, so that the coating surface is free of rust, oil stain, water stain and dust, and apply the primer within 12 hours after rust removal.
Third, the construction process and methods
The first topcoat coating: It is prepared according to the ratio of A: B = 10: 1, and it is fully and evenly stirred to ensure the consistency of color, viscosity and consistency without brush marks. Stir constantly during use, and the brushing method is the same as that of primer.
Second, third coating: remove impurities, welding slag, paint, etc. before coating. On the surface of the assembly. For burns or falls off, primer should be applied first, and then topcoat should be applied.
According to the actual situation of the project, the painting of the second and third layers of paint must be completed between installation and completion. Therefore, scaffolding must be erected separately after installation, and each layer of steel beam has double bent frames, with double bent frames around the steel coal hopper and double bent frames on both sides of the telescopic end. The whole house frame is suspended under the roof structure, and double bent frames are arranged under the wind-resistant truss at the fixed end.
Fourth, the construction preparation
The steel structure project has been accepted and meets the design requirements.
The site safety protection measures are perfect, with fire prevention and ventilation measures.
Suitable weather should be selected for open-air operation, and it is not allowed to work in strong wind, heavy rain or cold weather.
Paint construction personnel should hold a special operation certificate and pass the training and examination.
Verb (abbreviation of verb) quality requirements and guarantee measures
Adhere to the three-level acceptance system of engineering quality, the previous procedure is unqualified, and the next procedure will not be constructed.
According to the engineering quality requirements and construction characteristics, the finished product protection measures are compiled to protect the finished product.
Strictly implement professional construction methods, observe operation procedures, and carry out construction in accordance with design requirements and relevant process standards to ensure excellent engineering quality.
Use reward and punishment system to ensure the effective operation of quality control system and the implementation of various quality responsibility systems.
The quality inspector should check each working procedure, find out the reasons in time when problems are found, and take measures to solve them properly.
Strictly control the quality of material procurement, and inspect semi-finished materials in strict accordance with regulations to prevent unqualified materials and semi-finished products from entering the market.