Precautions for spraying water-based paint by Spraying machine
1. Since the main component of water-based paint is water, the material used in the water-based paint circulation system of the coating machine must be stainless steel.
2. Water has high conductivity, so the drenching machine used for drenching waterborne paint and drenching solvent paint is also very different. In order to prevent the leakage of high-voltage static electricity to the main circulation pipeline, the plunger pump is used inside the spraying machine instead of the gear pump to disconnect the spraying circuit from the main circulation pipeline to prevent danger.
3. Indoor construction in winter shall be carried out under heating conditions. The room temperature shall be kept balanced, not lower than + 10 degrees, and shall not change suddenly. Special personnel shall be assigned to measure temperature and switch doors and windows to facilitate ventilation and eliminate moisture. During construction in summer, white water shall be added to the coating to prevent moisture and whitening. Ventilation shall be maintained during the construction of water-based varnish. Mildew should be prevented in summer.
4. The general wood surface to be coated shall be preliminarily polished with 200# sandpaper and then polished with 600 sandpaper to make it flat and smooth. Joinery pieces can be polished directly with 600# sandpaper. Fine sandpaper grinding will make the wood grain close and reduce the graining of wood grain.
As long as the water used to dilute the coating of the coating machine meets the domestic water standard of residents, it is pure and free of impurities. Before construction, mix well to ensure that the paint coating machine is fully integrated with the water. If the paint is transferred into dry paint after opening the tank, it is recommended to dilute it and filter it with 200 mesh cloth to ensure that the quality of the paint film is smooth and delicate. For two-component drenching machine coating, it is recommended to add curing agent, stir and mix, and then add water to dilute and stir.
Why does the surface of the paint film turn white after spraying the coating of the spraying machine?
The whitening phenomenon is mainly due to the fact that the bottom paint film is not completely dry, and the water does not evaporate completely, so it can not be completely released. Therefore, the first coat must be hard and dry when brushing, that is, when it can be polished with sandpaper, the next coat shall be sprayed, and the recoating time at room temperature is 2-4h. After whitening, you can directly wipe and repair with 50% (mass ratio) concentration of alcohol. If the effect is poor, you can also purchase dimethylformamide in the market and directly wipe and repair with 1:1 water. After repair, the next coat of paint will be applied; If it still cannot be repaired, it can be directly removed with paint remover and then re constructed.
Foshan Shuofeng Intelligent Equipment Co., Ltd. is a specialized coating equipment manufacturer integrating R & D, manufacturing, sales and service. More than 20 years of manufacturing experience in UV coating industry, mainly engaged in: automation equipment, UV roller coating machine, membrane press, soil patching machine, coating machine, flat pasting machine, UV curing machine, coating equipment, coating production line, automatic feeding machine, etc.
The company introduces Italian coating technology, kneading and mature process, and develops coating production equipment with strong adaptability and strong applicability. The company's equipment is applied to the surface coating of panel furniture, calcium silicate board, glass magnesium board, flat door, cabinet, solid wood composite floor, bamboo and wood curtain and other flat parts, and provides scientific, rigorous and Applicable production process and equipment configuration to achieve high-quality coating effect for each customer.
The company has a loyal, stable and technologically mature development, manufacturing and after-sales team, specializing in automatic paint coating equipment. For a long time, adhering to the purpose of "focusing on quality and intimate service", the company has strictly grasped all details of the equipment and continuously innovated and improved the equipment. Over the years, the company's integrity, strength and product quality have been recognized by most customers. In the future, we will, as always, sincerelySpraying machine cooperate with our customers to create the future together. We wish our customers to visit, guide and negotiate business.
