GRAINING OF STAINLESS STEEL WELDS
Begin the graining process on a stainless steel
weld with a pregrind using a pneumatic right-angle
grinder with a plastic support plate with a cooling
effect and an 80-grit fiber disc. Finish with a pneumatic drum using a straight grinder.
Grain the surface using a right-angle grinder
with nonwoven, medium, or high-hardness finishing
discs. Grind the weld bead with a 120-grit grinding
belt and a 40- to 320-grit finishing belt.
ELIMINATING THE ORANGE PEEL EFFECT
To smooth the orange peel effect, begin with a
rough prep using a 40-grain belt. Then fine-grind
it with a soft contact roller and A160 Trizact™ belt.
Satin-finish with a soft contact roller and medium
surface conditioning belt.
You can achieve an industrial-grade finish by
using a flap brush and 220-grain abrasive pad.
GRINDING INSIDE CORNERS ON
To finish the inside corners of a stainless steel component, begin by smoothing the weld with an electric angle grinder with an 80-grain mini flap wheel.
Then fine-surface-grind them using an electric angle
grinder and soft disc—between an A160 and A16
grain—with a Trizact grinding wheel.
Use an electric file and nonwoven pads from 60
to 400 grain to define the surface grain.
GRINDING AND POLISHING
Start with a preliminary grind on an extruder feed
shaft using a belt grinder and a 40- to 80-grain
zirconium corundum belt to grind and polish.
Work the flanks with 80- to 120-grain Velcro® fiber
wheels. Fine-grind the shaft and flanks with a roll
attachment. Polish with twisted polishing rings and
polishing paste, especially if you are working with
Aaron Beck is national sales manager, abrasives
and power tools, with Suhner Industrial Products,
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The Welder — November/December 3.375" x 4.875"
8431 Astaras E3 The Welder Nov/Dec 2017 10/19/17 10: 31 AM Page 1