Analysis of the relevant knowledge of spray painting processing

       

Painting processing is a messy project. There are many precautions. The surface painting of plastic products can prevent dust pollution. The ideal condition should be that the entire painting production line should use specific air supply and exhaust equipment to ensure that the air of the entire production line is clean. In addition, the paint thinners used in the processing are all flammable liquids and have certain toxicity. Therefore, the site should follow the operation and safety operation rules. Effective fire prevention, anti-static and other safety measures must be adopted. After closing the heat source of the drying furnace, the suspension chain Continue to work for 15 to 20 minutes to prevent damage to the conveyor chain, and regularly use a vacuum cleaner to clean the drying furnace and flash drying room, and keep the interior clean and tidy. After the spray gun and subordinate equipment are used, they should be cleaned in time to prevent clogging. In the process of spray painting, there will be a phenomenon that the curing effect of the paint film is not good. Affects the intended effect of the entire painting process. There are two main reasons for this phenomenon. Taking appropriate improvement measures for these two aspects can prevent the poor curing of the paint film during the painting process.

Reasons: 1. The paint used in the spray painting process cannot meet the requirements; 2. The unreasonable control of the spray painting process makes the function of the paint film not meet the technical indicators. The baking time of the spray painting process refers to the baking time used after the coated object reaches the baking temperature. The thicker the material used for the coated object, the more pendants it has, and the greater the heat capacity, so the temperature rises to the control temperature. The longer the time of use.



Try to use an oven temperature tester to measure the temperature change of the object to be coated in the baking oven under full load conditions, so as to determine a reasonable baking and curing temperature and time, and then to obtain a good paint processing quality.