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Diamante o grano CBN con su muela vitrificada

Apr 15, 2020


With a very hard and porous structure, vitrified grinding wheels are a popular choice amongst high productivity applications due to the great chip clearance and excellent coolant delivery. This type of grinding wheel has an extremely low wear rate and results in a high ratio of stock removal to wheel usage. The enhanced ability to dress a vitrified wheel allows for a larger layer depth with continual renewing of the grinding layer. The customization of this type of grinding wheels allows for the wheel to meet a wide range of customer applications, using either diamond or CBN as the abrasive. & nbsp;Compared to other product lines, the structure of a vitrified grinding wheel allows for no deflection as the wheel feeds into part. As the grit starts to take chips of material out of the part, the finished piece size is strongly controlled and an enhanced surface finish from any customer’s requirements. Vitrified wheels do not need to run as fast as other products in the industry and coupling that with the ability to flow coolant through the open structure, results in less heat generated and minimal thermal damage to the workpiece. & nbsp;


With its exceptional hardness due to the symmetry of its structure, diamond seems the obvious choice for every grinding wheel operation. However, there are limitations on where diamond can be used in applications as it has a strong affinity for iron and hardened steel. Diamond is a pure crystal of pure carbon, and the carbon and iron molecules like to interact and bond when the heat is generated during a grind. As a result, this can potentially cause issues with the workpiece as well as increases the wear of the grinding wheel. & nbsp;


En la aplicación donde no se puede usar el diamante, el nitruro de boro cúbico (CBN) es la siguiente mejor alternativa. Las dos grandes fortalezas son su capacidad de cortar a temperaturas extremadamente altas y su negativa a reaccionar con el hierro y otros aceros endurecidos al moler. Esto hace que CBN sea ideal cuando se muelen herramientas y aceros de alta velocidad -. El mayor inconveniente de CBN es que la estructura no es tan dura como el diamante, y como resultado, este tipo de grano debe correr a una velocidad más alta para poder alcanzar las mismas capacidades de corte que un rectificado de diamante vitrificado. En general, ambos diamantes vitrificados & amp; Las ruedas CBN están disponibles para una amplia gama de aplicaciones y pueden proporcionar excelentes resultados en una pieza de trabajo para un cliente.

La compañía JR se especializa en herramientas de diamante y CBN, que incluyen unión de resina, unión vitrificada, unión de metal y muela electrochapada.

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