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email: sales@maskingsupplies.com.au

Australasian Masking Supplies P/L

 COATING ESSENTIALS

When a manufactured part is to be Powder coated, Anodised or Plated there may be certain areas of the surface that must be free of coating. For example, threaded areas may not fit properly if they are coated. Bearing surfaces with close tolerance cannot be coated. Some parts may require a bare spot for an electrical-grounding contact, or requires a different colour. It is important to select a mask that is effective, easy to use and reasonable in cost.

 

Masking or sealing off parts will add additional labour to the coating process. It is important to understand the different types of masking products that can be used.

 

Masking can be as simple as placing a plug in a single hole or tape to cover areas not to be coated or it may require a specially made mask or fixture.

The temperature needed to make the powder coat paint pigments melt would be somewhere around 400 degrees give or take a little. This is what makes up the unique and durable finish. And when I say durable, I mean durable. This finish beats stock paint hands down at resisting damage from chemicals or your average run of the mill scratches. Once you learn how to powder coat metals, you realize that it's not for decorative purposes alone. The powder coat finish surpasses any kind of paint for the purpose of preserving metals.

Products used for High-Temp masking

The type of masking material and its properties will be important to the effectiveness of the mask and its impact on production efficiency and costs.

AMS supplies different style and sized  high-temperature plugs and masking tape. The special high-temp tape will withstand over 400o F temperatures without peeling or leaving a sticky mess. In fact you can use this tape to mask areas where you do not want colour, then peel off the tape and do a clear coat without having to re-clean the part, or apply the tape over the coated areas exposing the uncoated areas for a different colour coating.
The plugs look like test tube plugs, but are made from silicone. They are used to cover critical holes where you do not want the coat to go. Powder coatings are applied with thicknesses of 1.5 to 3 mils, so you can imagine what that can do to hole clearances and threads.

 

Thread protecting plugs used before sand or Oxide blasting to protect the threads from damage and keep dust out for subsequent powder coating.