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Construction process and period of crane anticorrosion

Hits: 496 Release: August 23, 2019 source: Jiangsu Hongshun aerial Engineering Co., Ltd

1、 Construction process of crane anticorrosion
Process flow: base surface cleaning → primer coating → finish coating → inspection and acceptance
1. Base surface treatment: manual rust removal;
As the steel structure of your company is high-altitude steel structure, which is mainly small area, many parts are difficult to clean up, so manual rust removal is adopted. Power tools can remove all loose scale, rust, old coating and other harmful substances, but can not remove firmly attached oxide scale, rust and old coating. Our company uses paint remover and wind steel blade for manual paint removal and rust removal. The remaining oxide skin, rust and old coating film after paint remover application are made of wind steel blade, which can not only easily remove the loose parts, but also remove the attached oxide skin and original paint film to meet the coating requirements. The garbage caused by cleaning shall be collected and sent to the specified place.
After cleaning, the first anti rust coating must be finished on the same day after the acceptance by Party A, so as to avoid secondary rust.
2. Primer painting
(1) prepare the red lead (iron red) antirust paint, control the viscosity, consistency and thinness of the paint, and fully stir when cashing to make the color and viscosity of the paint uniform. (2) the first layer should be painted in the same direction. (3) the principle of frequent touch and short brush should be adopted to prevent the brush from falling due to too much paint. (4) after the first painting, a certain time interval should be kept to prevent the second time before the first time is dry, which will cause the paint to flow, wrinkle and quality. (5) after the first time of drying, brush the second time. The direction of the second brush should be perpendicular to the direction of the first time, so as to make the thickness of the paint film uniform. (6) after the primer coating, the surface drying can be achieved at least 4-8 h, and the top coat shall not be applied before the surface drying.  
3. Finish painting
(1) the top coat with the same color shall be selected for the preparation of the top coat. The prepared thinner shall be suitable. The top coat shall be fully stirred before use to keep the color uniform. Its working viscosity and consistency should be guaranteed.
(2) the top coat shall be continuously mixed in the process of use, and the brushing method and direction shall be the same as the above process. When painting, it will not drop and show brush marks.  
4. Coating inspection and acceptance
(1) during and after the surface coating construction, the coated workpiece shall be protected to prevent dust and other debris.  
(2) after coating treatment inspection, the coating color should be consistent, bright color, no wrinkle skin, no pimple.
2、 The anti-corrosion construction period of crane shall be completed within 15 effective working days.

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