User Manual

Product Use: Many factors beyond 3M’s control and
uniquely within user’s knowledge and control can affect
the use and performance of a 3M product in a particular
application. Given the variety of factors that can affect
the use and performance of a product, user is solely
responsible for evaluating the 3M product and determining
whether it is fit for a particular purpose and suitable for the
user’s method of application.
Warranty Limited Remedy and Disclaimer: Unless an
additional warranty is specifically stated on the applicable
3M product packaging or product, 3M warrants that each
3M product meets the applicable 3M product specification
at the time 3M ships the product. 3M MAKES NO OTHER
WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY
OR CONDITION OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY
OR CONDITION ARISING OUT OF A COURSE OF DEALING,
CUSTOM OR USAGE OF TRADE. If the 3M product does
not conform to this warranty, then the sole and exclusive
remedy is, at 3M’s option, replacement of the 3M product
or refund the purchase price.
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3M will not be liable for any loss or damage arising from
the 3M product, whether direct, indirect, special, incidental,
or consequential, regardless of the legal theory asserted,
including warranty, contract, negligence, or strict liability.
Technical Information: The technical information
recommendations and other statements contained in this
document are based upon tests or experience that 3M
believes to be reliable but the accuracy or completeness of
such information is not guaranteed.
3M, Cubitron, Roloc,
Scotch-Brite and Trizact
are trademarks of 3M.
Please recycle. Printed in U.S.A.
© 3M 2011. All rights reserved.
Bolger 11110082
61-5002-8191-2
Abrasive Systems Division
3M Center
Building 223-6N-02
St. Paul, MN 55144-1000
www.3M.com/abrasives
1-866-279-1235
Problem Solution Problem Solution
Heat or
warpage
• Use coarser grade abrasive
• Reduce speed
• Use new abrasive
• Use harder disc pad
Flap wheel
bounce
• Reduce speed
and/or pressure
• Use smaller wheel
Multi-finishing
wheel bounce
• Reduce speed
• Dress wheel to round
Edge
cutting
• Use softer disc pad
• Reduce angle of grinder
Smearing • Reduce speed
• Clean or replace
contaminated product
Disc
scratches
show
through
• Use ner grade leveling disc
• Increase speed
Tool stalling • Check for proper
air supply at tool
• Increase torque
and/or HP of tool
Chatter • Reduce speed
and/or pressure
Streaking on
final finish
• Use hand pad holder
Troubleshooting Guide for
Stainless Steel Repair
Right Angle Weld Grinding System
3M offers a complete system using coated abrasive and surface conditioning belts for leveling, blending and
finishing right angle welds on stainless steel. The advantages of this system are easier access, faster stock removal
and less undercutting than other methods such as grinding wheels, cut down wheels, coated abrasive square and
cross pads and other products frequently used to finish fittings, manways, frames and bracing.
Step 1: Weld Cut Down
Begin the process by using a 1/4" x 24" 3M
™
Belt 977F, grade 50, for cutting down the weld. This belt
contains 3M
™
Ceramic Grain and a grinding aid for fast cuts and cooler running on stainless steel.
Tech Tip: Keep tool moving to reduce undercuts, work in the center of the weld leaving a slight transition line of material, or
witness, on both sides of the weld.
Step 2: Refinement
Use a 3M
™
Belt 777F (Options: 947D and 907EA), grade P120, with a scalloped edge to remove the witness
lines and refine the finish. It is critical to leave only a slight transition line during step 1 so the finish can be
refined without undercutting.
Tech Tip: 777F P120 works better under lower pressure. It is critical to leave only a slight transition line from step 1 as removing
too much material in step 2 can lead to undercutting.
Step 3: Final Finishing
For the final finish, select a Scotch-Brite
™
Surface Conditioning Belt.
Tech Tip: Grade A Medium is a good starting point.
Optional Step 4: For Other Finishes
To achieve a pharmaceutical finish, choose 3M
™
Trizact
™
Belt 237AA in a series of grades A100, A45 and A16.
Also to obtain a surface finish of less than 32 micro-inch for dairy applications, refine the repair area after
step 2 with a 3M
™
Trizact
™
237AA, grade A100, scalloped edge belt followed by a fourth step of Scotch-Brite
™
Surface Conditioning Belt in grade A Very Fine.