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The curing temperature, time, and powder
coating effect are all critical factors in the production of powder coating. The quality of the final product depends not only on the quality of the powder
coating itself, but also on the application and curing process.
Unfortunately, many companies tend to focus
their attention solely on the powder coating itself, neglecting the importance
of the coating application process. As a result, many coating products fail to
achieve the desired results due to a lack of attention and research on the
application process.
Each type of powder coating has its own
curing characteristics, which can be fully cured within a certain temperature
and time range. Cutting corners by violating regulations and shortening curing
times in the name of efficiency and cost reduction is not advisable.
If the curing temperature or time is not
sufficient, the curing will be incomplete, leading to reduced physical
properties and decreased resistance to chemicals, as well as a failure to
achieve desired results in terms of appearance, corrosion resistance, and
weatherability.
Some coatings that cure at low temperatures
may not be as good as those cured at high temperatures, even if they are fully
cured. In particular, some parts that are formed after curing may have tiny
cracks at the points of bending and stamping, allowing moisture to penetrate
along the cracks and quickly corrode the substrate. We can see this in the rust
marks that appear soon after outdoor grates are put into use, which are
directly related to the baking temperature and time, as well as the degree of
bending after spraying.
Some coatings cured at low temperatures are
not as good as those cured at high temperatures, even if they are fully cured.
In particular, some pieces formed after curing can form tiny cracks in the
stamping and bends, along which moisture can penetrate and rapidly corrode the
substrate. We can see that traffic grating used outdoors shows signs of rusting
at the curved turns of intersections soon after being put into service, which
is directly related to the baking temperature and time as well as the degree of
bending after spraying.
Curing temperature and time and
powder coating effect are closely related. Curing temperature and time is an
important factor of powder coating effect, when the curing temperature and time
is not enough, the coating effect will not be complete, its physical properties
and chemical properties will be reduced, its decorative, anti-corrosion and
weatherability will not be able to achieve the desired effect. Conversely, when
the curing temperature and time is sufficient, the powder coating effect will
be improved. Therefore, in the production and use process must strictly comply
with the requirements of curing temperature and time to ensure the quality of
powder coating products.
Hebei Hanna Technology Co., Ltd. was
established in 1990, we specifized in metal surface treatment industry these
years. If you’re interested in powder coating line or painting equipment,
welcome to contact us:
Claire Shi
Phone: +86 15131185156
Email: sales02@coating-equipment.com
+86-186 3213 8668
