What Are the Best Tips for Powder Coating Metal?
Metal powder coatings refer to various powder coatings containing metal pigments (such as copper gold powder, silver aluminum powder, etc.)
Metal powder coating
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- Chinese name
- Metal powder coating
- Definition
- Various powder coatings containing metallic pigments
- Manufacturing process
- Mixed method, bonding method
- Use
- Spray
- Metal powder coatings refer to various powder coatings containing metal pigments (such as copper gold powder, silver aluminum powder, etc.)
- Metal powder coating can show a bright and luxurious decorative effect, which is very suitable for spraying indoor and outdoor objects such as furniture, accessories and automobiles. In terms of manufacturing process, the domestic market mainly adopts Dry-Blending, and internationally also uses bonding.
- Friction spray guns are generally not suitable for spraying metal powder coatings. In most cases, electrostatic spray guns are recommended for painting. Because this type of product contains
- Metallic pigments. When using an electrostatic gun, the system must be well grounded. At the same time, a lower electrostatic voltage and powder output should be set to prevent ignition when spraying
- phenomenon. The effect of coating film formation, spray gun setting,
- In most cases, due to the large error, we do not recommend using a gloss meter to measure the gloss of the metallic appearance coating film, and only use visual contrast to determine whether
- Whether it is consistent with the standard template.
- For powders produced by the dry-blend method, due to the separation phenomenon during spraying and recycling, the recycled powder and new powder will be stored in the metal pigment content.
- At a certain difference, the appearance of the coating film may be inconsistent, and a color shift phenomenon may occur. This is due to the difference in properties between metallic pigments and powder particles
- of. We recommend a ratio of recycled powder to new powder of at least 1: 4.
- If the powder coating produced by the adhesive fixing method is relatively fixed, the ratio between the metal pigment and the powder particles can be reused.
- end.
- Coating the metal powder coating with a coating layer has the following advantages:
- 1. Enhancing the resistance to stone impact of the metal powder coating.
- 2. Increase the aesthetic effect of metal powder coatings.
- 3 Completely solve the erasability of metallic pigments.
- 4 Improve the weather resistance of metal powder coatings.
- In order to ensure the appearance effect of the varnishing layer, it is required that the workpiece sprayed for the first time cannot be polluted. Therefore, a fully automated spray line and
- Two independent spray booths are painted separately.
- It is recommended that users do not spray the finishing coat under normal circumstances. Only use it when the requirements are very high, such as: high-end appliances, car wheels, and outdoor use (really
- Weatherability) and so on.
- 1. For the same product, use the same batch of metal powder coating as much as possible to avoid the problem of the difference between the powder coating batches.
- 2. Try to keep the spray conditions as stable as possible:
- a) Use the same spraying equipment and use the same voltage and pressure parameters
- b) Try to keep the distance between the spray gun and the workpiece as much as possible, and keep the film thickness as stable as possible.
- c) Ensure that the powder coating is sufficiently fluidized before spraying
- d) When using recycled powder, ensure that the ratio of recycled powder to new powder is at least 1: 4
- 3 Try to avoid using metal powder paint to spray workpieces with complex shapes or deep depressions.
- 4 We recommend spraying multiple parts to be assembled together.