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What should be noted in the spraying construction of aluminum alloy boats?
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Release time:
2022-12-07
The method of installing paint protection or anti-corrosion zinc blocks on the surface of aluminum alloy boats to prevent the attachment of organisms such as shellfish and algae on the hull, which can reduce the speed of the boat or accelerate the aging of aluminum alloy.
Aluminum alloy boatMethods for surface-mounted paint protection or anti-corrosion zinc blocks to prevent the attachment of organisms such as shellfish and algae on the hull, which can reduce boat speed or accelerate aluminum alloy aging.
Aluminum alloy boat coating climate conditions
The main factors to consider when coating aluminum alloy boats are the surface condition of the aluminum alloy and the atmospheric environment during coating. Generally, the coating temperature should be between 5℃ and 32℃, and the relative humidity should be below 85%. Painting is not allowed when the surface is affected by rain, fog, or snow. For special coating varieties, the coating should be done according to the supplier's requirements or guidelines.
The following key points should be noted for the spraying construction of aluminum alloy boats:
1. Before starting the coating construction, the worker should check the spray gun and adjust it to produce an ideal spray pattern;
2. Hold the spray gun so that the spray beam is always perpendicular to the surface and maintain a uniform distance of 25-30cm from the surface being coated to prevent hand and brain from moving in an arc;
3. The trigger should be pulled before the nozzle is in a straight line with the edge of the surface to be coated. The trigger should be fully pressed, and the spray gun should move at a uniform speed until it reaches the other side of the object, then the trigger should be released to stop the flow. However, when the spray gun continues to move a certain distance until it returns to the return path and reaches the side of the object to be sprayed, the trigger should be fully pressed again, and the spray gun should continue to move past the object.
4. When spraying, start the trigger while moving the gun, and also close the trigger while moving: each spray path should be 50% heavier than the previous one, and the paint film should be evenly covered: at the corners, the spray gun should be aimed at the centerline of the corner to ensure that both sides receive an even film thickness. After the epoxy primer is fully cured (generally more than 24 hours), rough grinding should be performed (either pneumatic or electric grinder can be used). Generally, use 80-120 grit sanding discs or belts for grinding, ensuring that all primer surfaces are properly ground.
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