User manual 3M 02-2004 REMOVING DEFECTS FROM HIP STEMS ON BACKSTAND

[. . . ] Application Profile Market: Orthopedic Medical Implant Devices Application Description: Removing casting scale and minor defects from hip stems on a backstand 241570 Key Application Requirements Remove casting scale and minor surface defects from cobalt chrome or titanium hip stems using a backstand while leaving a consistent, high quality finish. PRODUCT 3MTM TrizactTM CF Belt grades A160 ­ A45 Products Replaced Competitive J wt. flexible coated abrasives in grades P150, P180, P220 and P400. Advantages/Benefits To Customer Consistent, improved finishes 3M Trizact CF Belt features a macroreplicated matrix of resin and aluminum oxide mineral on a flexible X weight cloth backing. [. . . ] Depending on hip design or style, this abrasive step may be refined by additional coated abrasives grades, possibly down to a grade P400. On some hip designs the scale and minor defect removal step may be the only coated abrasive step. However, it may be followed by a Scotch-BriteTM Wheel or blast media to achieve the final finish. Using 3MTM TrizactTM CF Belt for defect removal and scratch refinement as necessary will provide longer life and a high quality, more consistent finish than conventional coated abrasives. 3M Trizact CF Belt in grades A160 and A100 will typically be used on hip stems in the scale or minor defect removal application. Grades A65 and A45 are used for refining previous abrasives steps and producing the final finish. Recommended Trizact CF Process Application Casting scale and minor defect removal Casting scale and minor defect removal P150/P180 scratch refinement P220 scratch refinement Recommended Trizact CF A160 A100 A65 A45 Competitive Coated Abrasive P150, J wt P180, J wt P220, J wt P400, J wt Recommended Belt Speeds Cobalt Chrome: 6, 000 ­ 7, 200 SFPM Titanium: 2, 500 ­ 3, 500 SFPM Contact Wheel Selection Trizact CF Grades A160 and A100 Contact Wheel Durometer Hard (60­70) Contact Wheel Serration Pattern Mild (1:1) Comments Can provide increased cut for the scale removal step. Caution: excessive contact wheel serration can cause premature mineral wear or macro-structure breakdown. Caution: on soft contact wheels (under 50 shore A durometer) there may not be enough pressure generated to break down Trizact CF structures adequately to maintain desired cut rate. In extreme low pressures it may result in product dulling until it quits cutting altogether. A65 and A45 Medium (55­65) Smooth face Market: Orthopedic Medical Implant Devices Application Description: Removing casting scale and minor defects from hip stems on a backstand page 3 Related Products If finer finishes are required: 3MTM TrizactTM Belt 237EA in grades A30 to A16 Related Applications "Removing casting scale and minor defects from the sides of knees (robotic application)" 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 1-800-362-3550. Address correspondence to: 3M Industrial Business Customer Response Center, Building 21-1W-10, 900 Bush Avenue, St. All statements, technical information and recommendations contained in this document are based upon tests or experience that 3M believes are reliable. [. . . ] If the 3M product is defective within the warranty period, your exclusive remedy and 3M's and seller's sole obligation will be, at 3M's option, to replace the product or refund the purchase price. 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 Trizact and Scotch-Brite are trademarks of 3M. Industrial Business Building 21-1W-10, 900 Bush Avenue St. [. . . ]