総合カタログVer6.0

116/702

安全のため、保護メガネ等の保護具を必ず着用してください。 工具の最高回転数を超えて使用しないでください。For your own safety, please wear eye protection. Please use SENTAN TOOL® within its maximum rotation speed.113ADescription of Diamond / CBN ToolsGrindability 523543Abrasion Resistance254222Heat Resistance354433Finish Roughness 112245Electro PlatedMetal BondedCeramic andMetal BondedSuper DiamondMounted PointsResinoid BondedFoamed Resinoid BondedCharacteristicsHardness (Knoop Hardness)Physical PropertiesResinoid BondedBonded with phenol-formalin resin and special resin. Keeps great grindability due to less grinding burn and clogging. Superior finishing can be acquired due to moderate elasticity.Resinoid Bonded Diamond PointsMetal BondedBonded with metal powder.Retains its own grains and excellent in heat resistance, abrasion resistance and durability. Metal Bonded Diamond PointsFoamed Resinoid BondedBonded with special foamed resinoid. Made of specially-formulated bond, and more excellent in heat release than resinoid bonded. Keeps great grindability due to its grain holding power and provides uniform finishing without big scratch on workpiece surface.FR Diamond Mounted PointsCeramic and Metal BondedBonded and mixed with both ceramic and metal powders.Perform as well as Metal bonded and Vitrified bonded.　Can be used with lower speed hand grinders comparing with other bonds.Ceramic and Metal Bonded Diamond PointsVitrified BondedBonded with ceramic powder.Excellent in grinding ability due to a large protruding grains.High abrasion resistance against solid material because of small elasticity.Super Diamond Mounted PointsElectro PlatedSingle coated by Nickel Plate.Excellent in grinding due to a large protrusion of grains. Enable to grind complicated surface because tool can be made as same shape as the shape of base metal.Suitable for rough grinding. Diamond Plated PointsCBN Plated PointsBondFeature of GrainDiamond Abrasive GrainCBN Abrasive GrainDiamond is the hardest in existing materials and has high thermal conductivity and Young’s modulus.Because of low thermal expansion coefficient and great abrasion and adhesion resistances with scientific stability,it is widely used for cutting and grinding works.Young’s modulus…Longitudinal elastic modulus. This is the constant number related between expansion and force when straining from one direction. Generally, it is said that hardness should be increased if Young’s Modulus increases.CBN （Cubic Boron Nitride） is the second hardest in existing materials. Comparing to diamond, it is more excellent in shock and heat resistance. Because of no chemical reaction against metal materials and moderate autogenous effect with polycrystalline structure, it is extremely suitable as abrasive grain for grinding. Highest HardnessExcellent Thermal ConductivityExcellent Thermal ConductivityExcellent Heat ResistanceExcellent abrasion resistanceNo chemical reactions against any metalsSuitable for grinding hardened materials such as cemented carbide, ceramic and glass.Excellent in heat release and superior finishing can be acquired.Excellent in heat release and superior finishing can be acquired.Enable to use it under severe circumstances due to no chemical reaction until 1280℃.Less deformation of crystal, excellent shape maintenance performance and long life.Suitable for grinding hardened materials such as alloy steel and tool steel due to no chemical reaction against iron metals.Hardness(Knoop Hardness) Natural 8000～12000Articial 6500～ 80004500～ 4700Thermal conductivity(Ｗ/m・ｋ)21001300Heat resistant temperature(℃)700～ 8001280DiamondＣＢＮHigher rate implies better performance at corresponding characteristics.

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