3M damp hand sanding of primers and electro-coated surfaces 用户手册

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General Overview
At this time, damp sanding is the best and cleanest system to use for sanding
many different types of substrates. One example would be sanding of automotive
substrates such as E-coat or primer. The system utilizes enough water to keep the
abrasive clean but without significant run off. The definition of “damp sanding”
is a system which, when used on a vertical panels, uses enough water to keep 
the repair area wet but not enough to run down the side of the panel.
Advantages/Benefits To Customer
Cleaner: Damp sanding eliminates airborne sanding residue, which is contained
and wiped off of the coated surface so it will not settle into hard-to-reach areas.
Potential defects and process time are both reduced, and residue does not become
airborne during the blow-off step.
Quality Finishes: A more uniform scratch pattern is produced and wild scratches
are eliminated. The finer finish produced decreases the amount of film build
needed at the next coating step.
Reduces Costs: Water keeps the abrasive clean, reducing loading and clogging,
which extends the life of the abrasive, reducing abrasive costs. In addition,
defects from loaded or clogged sanding discs are reduced, significantly reducing
re-work required.
Application Profile
Market: Transportation (Automotive OEM’s)
Application Description: Damp Hand Sanding of Primers
and Electro-Coated Surfaces
PRODUCTS
3M
Microfinishing Film 268L,
grade 20 micron
3M
Imperial
Film Disc 360L,
grade P600
3M
Disc 210U, grade P600
3M
Hookit
Center Water Feed
Disc Hand Pad – Contoured, Firm
UPC #051111-56445
3M
Hookit
Center Water Feed
Disc Hand Pad – Bullet Shape, Firm 
UPC #051144-82457 
3M Industrial Business