Общий каталог PRECITOOL - страница 824

Mounted points Product information Mounted points in hardness N are manu- factured from regular aluminium oxide and a high-quality resinoid bond. This relatively hard bond contains grinding additives, which in combination with tough regular aluminium oxide and the hard bond allow high stock removal rates and excellent tool life. The hardness N is particularly suited for edge grinding on stainless steel (INOX). It is charac- terized by cool grinding and high dimensional Mounted points in hardness O consist of Mounted points in hardness R are manu- stability. pink aluminium oxide in a vitrified bond. factured from grey silicon carbide in a vitrified These tools are characterized by a very long bond. Advantages: tool life and good stock removal rate due to The combination of very hard abrasive grain ■■Due to cool grinding, very suitable for use the combination of wear-resistant grain and and high bond content means that extremely on temperature-sensitive materials. a hard bond. The hardness O is particularly long tool life is achieved when grinding The ■■High level of grinding comfort through suited for use on edges and for deburring hardness R is particularly suitable for use on low-vibration grinding. work on steel components. edges and for grinding out metal contami- ■■Economical to use due to the high edge nation on grey and nodular cast iron at high stability even on low-speed tool drives. Advantages: cutting speeds.■■Long tool life and low tool wear due to theApplication examples: hard, dimensionally stable bond. Advantages: ■■Grinding of fillet welds on high-grade steel ■■Economical to use due to the high edge ■■Highly dimensionally stable due to the high components. stability even on low-speed tool drives. bond content. ■■Removal of burrs on moulded high-temper- ■■Economical to use due to the high edge ature-resistant alloys. Application examples: stability even on low-speed tool drives ■■Removal of burrs on cast stainless steel ■■Removal of burrs on cast steel parts parts. ■■Grinding of chamfers for welding seam Application examples: ■■Grinding of chamfers in preparation for preparation ■■Removal of sharp burrs on grey and nodu- welding of stainless steel profiles. ■■Grinding contours. lar cast iron components. ■■Grinding of sand and metal contamination Recommendations for use: Recommendations for use: on cast parts. ■■Mounted points of hardness N achieve ■■Mounted points of hardness O achieve their best performance at a cutting speed their best performance at a cutting speed Recommendations for use: of 35 to 50 m/s. of 25 to 40 m/s. ■■Mounted points of hardness R achieve ■■Flexible shafts, electric grinders and air- ■■Flexible shafts, electric grinders and air- their best performance at a cutting speed powered straight grinders are suitable as powered straight grinders are suitable as of 30 to 50 m/s. tool drives. tool drives. ■■Flexible shafts, electric grinders and air- powered straight grinders are suitable as tool drives. Bond  Ceramic bond Resinoidbond Mounted point hardness  Hardness 0 Hardness R Hardness N AR CU AN Material group Abrasives  Recommendedcutting speed  25–40 m/s 30-50 m/s 35-50 m/s Processingtask  Surface grindingNon-hardened, non-tem-Structural steels, carbon steels,with high stock removal rate pered steels up to 1,200 N/ tool steels, unalloyed steels, mm² (< 38 HRC) case-hardening steels Edge grindingwith high form stability   Steel,cast steelHardened, heat-treatedsteels over1,000 N/mm² (> 38 HRC)Tool steels, tempered steels,alloyed steelsEdge grindingwith high form stability Cast steel Non-alloyed cast steel, Surface grindingwith high stock removal ratelow-alloyed cast steelEdge grindingwith high form stability Surface grindingStainlesssteel(INOX)Rust- and acid-resistantsteelsAustenitic andferritic stainless steelswith high stock removal rateEdge grindingwith high form stability Cast iron with flake graphite Surface grindingEN-GJL (GG),with high stock removal rate  with nodular graphite/nodular Cast iron Grey cast ironwhite cast ironcast iron EN-GJS (GGG),white annealed cast ironEdge grinding and EN-GJMW (GTW), grinding of burning-in    black cast iron with high form stability EN-GJMB (GTS)  = highly suitable  = suitable  = additional types for foundries www.precitool.de 45/819