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Letter 33022
Does sandblasting warp 2mm steel sheet?
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We are bidding a project where we buy an ecoated steel enclosure
(for a generator set). We will modify the enclosure, have it sand
blasted by a subcontractor, and then repaint it with special marine
paints. The steel enclosure is made out of 14ga (2mm) and 16ga
(1.5mm) steel.
Can thin steel like that be safely sandblasted? . . . or will the
steel panels and doors warp severely?
Mark Anderson
- Milwaukee, Wisconsin, USA
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Distortion should not normally be a problem; however, pressure,
angle and dwell time all play a factor in creating such a problem.
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They will absolutely distort. How much depends on the impact
energy and how much material is removed. Sandblasting both sides
tends to offset the warpage of the other side. Can you live with it??
That depends on what your limits are.
James Watts
- Navarre, Florida
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I have 15+ years of sandblasting and used to blast many thin
items. Car bodies, frames, steel sheet etc. Your sheets need to be
blasted by sweeping them. I also used to blast with a 50/50 sand/sand
powder mixture that cleaned very well. Instruct the blaster to stay
at least 2 feet away from the sheeting and if possible have a solid
back for the sheet. Shouldn't be a problem if the guy knowes what
he's doing.
Good Luck,
Fred Read
- Duluth, MN, USA
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