cation or networking. Check out growth sectors like agriculture and electronics, and see if anyone in your area
needs coating help. Look for good margin on projects
and avoid going for the same work everyone else wants.
n
Chipping
Q. Powder chips off of some of our fastener products in
the field. Could you recommend a quality control test
to better predict when this will happen so we can catch
the parts before they make it to our customers?
A.R.
A. The metal you are coating may make a difference in
the test you use. If it is steel, I would try to create an
impact test that applies a measured amount of impact
on a chosen surface. There is an ASTM test that does
this on steel panels, but it does not work for fasteners.
You would need to hold the fastener frmly and drop a
precise weight onto the surface. This could also work on
non-ferrous metal, but you may be able to test that with
boiling water. Make a small cur in the coating, and then
put the fasteners into boiling water for 5 to 20 minutes
and see if the adhesion breaks. The length of time depends on what kind of surface treatment you use. If it is
minimal, you will only get around 5 to 10 minutes. If it is
very good, you will pass beyond 20 minutes. n
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