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Seco Tools Inc. has announced the availability of its new grade CBN60K for finishing case-hardened steels (58 to 63 HRC) where precision and reliability are more important than high speed. Available in brazed-tip or solid inserts, CBN60K can help reduce tool inventory as well as provide 20 to 30 percent more tool life, according to the company. CBN60K performs best in speed ranges from 425 to 825 sfm, with feeds of 0.004 to 0.016 ipr and a typical finishing DOC of 0.006". It can be used with or without coolant in continuous or light interrupted cuts. The feature that contribute to CBN60K's performance level include its carefully tailored substrate comprised of small (micron sized) CBN particles with a unique particle distribution, providing increased tool life and consistency coupled with excellent component surface finish. Additionally, the new multilayer K coating in conjunction with special precoating treatments and unique PVD techniques has enhance the product performance. CBN060K also incorporates the a superalloy binder consisting of the superalloy and TiCN, which improve the mechanical properties without compromising wear resistance. The enhanced product toughness offered by a superalloy binder reportedly provides the user greater cutting edge reliability and tool life, as well as the ability to machine at higher cutting speeds. And, lastly, an optimized cutting edge promotes reliable machining.
Related Glossary Terms
- coolant
coolant
Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.
- cubic boron nitride ( CBN)
cubic boron nitride ( CBN)
Crystal manufactured from boron nitride under high pressure and temperature. Used to cut hard-to-machine ferrous and nickel-base materials up to 70 HRC. Second hardest material after diamond. See superabrasive tools.
- mechanical properties
mechanical properties
Properties of a material that reveal its elastic and inelastic behavior when force is applied, thereby indicating its suitability for mechanical applications; for example, modulus of elasticity, tensile strength, elongation, hardness and fatigue limit.
- physical vapor deposition ( PVD)
physical vapor deposition ( PVD)
Tool-coating process performed at low temperature (500° C), compared to chemical vapor deposition (1,000° C). Employs electric field to generate necessary heat for depositing coating on a tool’s surface. See CVD, chemical vapor deposition.
- titanium carbonitride ( TiCN)
titanium carbonitride ( TiCN)
Often used as a tool coating. See coated tools.
- wear resistance
wear resistance
Ability of the tool to withstand stresses that cause it to wear during cutting; an attribute linked to alloy composition, base material, thermal conditions, type of tooling and operation and other variables.
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