User manual 3M STAINLESS STEEL RIGHT ANGLE WELD GRINDING APPLICATION PROFILE

[. . . ] Application Profile Market: Metal Fabrication Application Description: Grinding and finishing right angle welds in confined areas on fittings, manways, frames and bracing. Key Application Primary application is stainless steel fabrication. PRODUCTS 3MTM Belt 977F, 1/4" x 24", Grade 50 (051135-14206-6) 3M Belt 777F, 1/2" x 24", Scalloped Edge, Grade P120 (051144-94190-2) Scotch-BriteTM Surface Conditioning LS Belt, 1/4" x 24", Grade A MED (048011-90642-3) Products Replaced Type I grinding wheels, rubber bonded & cotton impregnated cut down wheels, coated abrasive square and cross pads, convolute and unitized surface conditioning wheels. Application Advantages/Benefits To Customer Access to right angle welds ­ Narrow tool and belt profile provide a localized access to repair area. The access does not change during life of abrasive. Faster weld stock removal ­ Belts featuring 3MTM CubitronTM Abrasive Grain typically have higher cut rates than grinding wheels, rubber bonded or cotton impregnated wheels. [. . . ] Step1: Weld Cut Down Begin the process by using a 1/4" x 24" 3MTM Belt 977F, grade 50, for cutting down the weld. This belt contains 3MTM CubitronTM Abrasive Grain and a grinding aid for fast cuts and cooler running on stainless. 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 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 with the 777F P120 without undercutting. Tech Tip: 777F 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-BriteTM Surface Conditioning Belt. Tech Tip: Grade A MED is good starting point. Optional Step 4: For Other Finishes To achieve a pharmaceutical finish, choose 3MTM TrizactTM Belt 237AA in a series of grades A100, A45, and A16. To achieve a surface finish of less than 32 micro-inch for dairy applications, refine the repair area after step 2 with a TrizactTM 237AA grade A100 scalloped edge belt followed by a forth step of Scotch-BriteTM Surface Conditioning Belt in grade A VFN. Contact your 3M Representative for more details. Market: Metal Fabrication Application Description: Grinding and finishing right angle welds in confined areas on fittings, manways, frames and bracing. page 3 Safety Information Always read and follow all safety information included with the product. Do not exceed maximum operating RPM's. Follow safety operation procedures posted in work areas. To request additional product information or to arrange for sales assistance, call 1-866-279-31235. Address correspondence to: 3M Industrial Business Customer Response Center, Building 21-1W-10, 900 Bush Avenue, St. [. . . ] Except where prohibited by law, 3M and seller 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. For Additional Information Product Use Warranty and Limited Remedy Limitation of Liability 3M, Scotch-Brite, Cubitron, and Trizact are trademarks of 3M. Dynabrade is a trademark of Dynabrade. Industrial Business Building 21-1W-10, 900 Bush Avenue St. Paul, MN 55106 MFabfitman. pdf © 3M 2005 IBD5454 [. . . ]