RAL 5015 Epoxy Powder Coating High Mechanical Performance For Interior Use

RAL 5015 High Mechanical Performance Safety Box Epoxy Powder Coating For Interior Use

Powder coating construction process and requirements:

The so-called powder electrostatic spraying is the principle of using a high-voltage electrostatic corona electric field. A high-voltage negative electrode is connected to the metal guide of the spray gun head, and the workpiece is grounded to form a positive pole, so that a strong electrostatic electric field is formed between the spray gun and the workpiece. When the powdered paint is sent from the powder supply tank to the guide rod of the spray gun through the powdery tube as the compressed air of the carrier gas, a dense negative charge is generated in the vicinity of the guide rod due to the corona discharge generated by the high voltage negative electrode. The powder is negatively charged and enters an electrostatic field with a high electric field strength. Under the dual action of electrostatic force and carrier gas, the powder uniformly flies to the surface of the grounded workpiece to form a thick and uniform powder layer, which is then heated and solidified into Durable coating. Painting construction process Pre-treatment, drying, removal of water, spraying, inspection, baking, inspection, inspection, finished product, construction requirements, general powder coating construction requirements

(1) To maximize the performance of the powder coating and extend the life of the coating film.
(2) When spraying, the object to be coated must be completely grounded to increase the spraying efficiency of the powder coating.
(3) Check immediately after dusting. If defects are found, they should be treated in time. If defects are found after curing, the range is small and only partial and does not affect. The surface of the coated object is decorated. It can be repaired with the same color powder and diluted with acetone. If the surface quality is affected, sanding with sandpaper, spraying again or removing the coating with a paint remover, and then re-pulping.
(4) The recovered powder shall be mixed with the new powder at a certain ratio after screening to remove the impurities.
2, art-type powder coating construction requirements: art-type powder, with beautiful features, strong three-dimensional sense, good decorative effect, etc., but the construction process requirements are strict.

(1) The input air pressure during dusting should not be too large, generally it is better to control 0.5-1.5kg/cm2. Too much air pressure can cause poor pattern sharpness or some pitting. The electrostatic voltage should not be too high, generally controlled at around 60-70Kv. If the voltage is too high, the powder attached to the surface of the workpiece will rebound and pitting. Defects such as poor leveling.

(2) Spraying powder should pay attention to ensure the thickness of the coating film. Generally, it can be controlled between 70-100μm to facilitate the formation of obvious patterns and large patterns. If the coating film is thin, the pattern is not obvious, and the pattern is small, and at the same time Defects such as pitting and bottoming out appear.

(3) It must be baked at the specified temperature and time during curing. If the temperature is too low, the powder will not be patterned, and the mechanical properties will be greatly reduced due to incomplete curing. In addition, due to the particularity of the production process of the art pattern powder, after the recycled powder is re-sprayed, the pattern will become smaller or less obvious, so it is generally recommended that the recycled powder of the art type powder should not be used. It must also be tested if it is used. Although the construction requirements are stricter from the above, it is believed that as long as the above factors are well grasped during the coating process, the desired satisfactory results will be achieved.

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