THE ADHESIVE SOURCEBOOK - Hasmak.com.tr

Source’s revealed[ Industries ]• Manufacturing• Maintenance and RepairWHEN SHOULD I USE ALOCTITE ® PRIMER?Speed up cure – Significantly speedup the cure time of Loctite ® threadlockerswhen assembling metal parts that arecold, have large gaps or deep threads.Inactive metal assemblies* –When assembling metal parts withinactive surfaces, Loctite ® primersare re<strong>com</strong>mended to ensure properperformance of Loctite ® threadlockers.Please note: Loctite ® Anaerobic Machinery Adhesivescure in the absence of air and presence of metalions. When assembling inactive metal parts, whichare low in metal ions, the use of Loctite ® Primersare re<strong>com</strong>mended to ensure proper performanceof Loctite ® Anaerobic Machinery Adhesives.Inactive Metals*(PRIMERS RECOMMENDED)PLATED PARTSANODIZED ALUMINUM(ALODINE, IRRIDITE)TITANIUMSTAINLESS STEELGALVANIZED STEELMAGNETITE STEELICONEL ®SILVERGOLDZINCPUREALUMINUMCADMIUMMAGNESIUMNATURAL ORCHEMICALBLACK OXIDEACTIVE METALS(PRIMERSOPTIONAL)IRONPLAIN STEELCOPPERBRASSBRONZENICKELMANGANESEMONEL ®KOVAR ®HELPFUL HINTSTHREADLOCKING• Clean parts with Loctite ®ODC-Free Cleaner & Degreaserbefore applying the adhesive.• If the threadlocker will be appliedbelow 40ºF, pre-treat withLoctite ® 7649 Primer N .• If the parts were in contactwith aqueous washing solutionsor cutting fluids, which leave aprotective layer on the surface,wash with hot water before use.INDUSTRIESHELPFUL HINTSthreadlocking& thread sealingThreadlockersIs there a threadlocker for high temperature applications?Yes, Henkel has threadlockers for applications below 300°F (150ºC) and between 300°F (150ºC) to 650°F (343ºC).One example is Loctite ® 2422 , a medium strength product for temperatures up to 650°F (343ºC).Other high temperature products can be found in the Properties Chart.Are there products that work well on oily parts?There are several Loctite ® products with oil-cutting capabilities. These include Loctite ® 243 , 246 , 266 and294 threadlockers. Use the Properties Chart to choose the one that is right for your application.What do I do when I have a blind hole application?The application method for blind hole assemblies requires that the product be applied to both parts. If the productis applied to the fastener only, air pressure will force the liquid threadlocker to escape as you torque down.Do you have a product for inactive metals?Loctite ® 2760 (high strength) threadlocker enables the assembly of inactive metals without the need to use a primer.These products are ideal for use on metals such as stainless steel, zinc, magnesium, black oxide, cadmium, anodizedaluminum, passivated titanium, and others.How much time is needed for the adhesive to cure?Most anaerobic adhesives attain full cure in around 24 hours but will fixture in less time. For cure speedof the various products, refer to the Properties Chart or to the Technical Data Sheets (TDS).Can I use threadlockers on plastic threads?For plastic fasteners, only use Loctite ® 425 Assure Instant Adhesive, a surface curing threadlocker.When should I use a primer?Primers help speed the curing process for faster return to service. For this reason, they can be used in anyapplication but are most often used on less active metal surfaces. Alternatively, the use of Loctite ® 2760 primerless product provides a fast cure on inactive surfaces.The Source Answers your qUESTIONSThe Adhesive Sourcebook 2009 : Your Source for Loctite ® products for design, assembly, manufacturing, and maintenance150