What is powder coating?
Powder coating is a finishing process consisting of a
dry "paint" in the form of powder that is sprayed onto a
part and then baked to cure.
How does it work?
The part that is to be powder coated is thoroughly
stripped, cleaned, and polished to the bare metal. Cleaning
is essential to getting a quality finish that will last.
The part is then hung in our paint booth and is given an
electrical ground. Pigmented powder is then sprayed from
a special gun that gives the powder particles an electrical
charge as they leave the barrel. The grounded part attracts
the charged powder. When the part is fully covered,
it is placed in a curing oven. It is heated to a temperature
of 350 to 400 degrees for 12 to 20 minutes, depending on
the powder. When heated, the particles melt and chemically
bond with each other to form a solid coating.
What are the advantages of powder coating?
Powder coated surfaces are thicker and more durable
than liquid paints. Depending on the type of powder used,
they are scratch resistant, chemical resistant, heat
resistant, and do not fade in sunlight. A part that is
powder coated correctly can easily last three times longer
than the same part would have with liquid paint.
Also, the powder coating process is environmentally
friendly. Unlike liquid paints, there are no solvents
released into the air during the process. Oversprayed
powder is cleaned up and safely disposed of. This means
that the entire process is pollution-free.
Are there any disadvantages?
The biggest disadvantage is that powder coating cannot
be touched up, at least not with powder. However, any
paint shop should be able to custom match the color in a
liquid paint.
What materials can be powder coated?
Powder coating is ideal for metallic objects, but it
can be used on nearly anything that can withstand the
temperatures required to cure the powder. Advances are
being made in powder coating wood, plastic, and other
heat-sensitive materials by using UV lamps to cure the
powder, but we currently do not offer those services.
What are some common uses of powder coating?
Powder is commonly seen on automotive parts from rims
to valve covers to motorcycle frames to ATV bumpers to
T-tops for boats. Powder is also commonly used on lawn
and office furniture, ornamental fencing, metal yard art,
and more. If it's metal, it can usually be powder coated.
What colors and finishes are available?
Virtually any color you can think of is available as
a powder. Also, there is a wide range of metallic, glitter,
and special effect finishes. From a finish that is very
close to a real chrome to hammered aluminum to aged bronze
to bright blue with silver sparkles, there is a seemingly
unlimited array of colors. Also, custom color matching is
available for a reasonable fee, as well as custom masking
options for flames, pin-stripes, text, and more. If you
have any inquiries about color availability, just send us
an e-mail.
You mentioned different types of powder. What are
those different types?
Like paint, powder is available in several chemistries.
The most common types of powder are polyester TGIC,
urethane, epoxy, and epoxy-polyester hybrids. Each of
these powders has its own strengths and weaknesses. Epoxies
and hybrids are tough and resistant to chemicals, but tend
to fade or chalk in UV light. Because of that, they are
mostly used indoors. Urethanes and polyesters are typically
used for outdoor applications.