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03 Arandelas

22 - Arandelas Cuna Metálicas y Plásticas




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Codigo : C00126


Las arandelas Cuna Fornis o tipo cuna son utilizadas en tapicería y carpintería metálica y madera.

Desde su diámetro interior se produce una elevación que al llegar a la mitad del ala desciende formando una cresta.

En la cavidad se aloja el tornillo o remache cubriendo la cabeza de estos dando una mejor terminación y vista al producto.

La mencionada cresta forma un nervio que le da resistencia al aplastamiento.

La base de Las arandelas Cuna esta formada por un labio que rodea el diámetro exterior y cuya planitud libre de filo protege la superficie del producto donde será alojada.

Las Arandelasson fabricadas en acero de bajo contenido de carbono SAE1010 cuya composición química es la siguiente:
Carbono: 0,08 - 0,13
Fósforo máx.: 0,06
Manganeso: 0,30 - 0,50
Azufre máx.: 0,05
La dureza de Las Arandelases de 85 a 96 HRB ( Rockwell "B" ) equivalente a 225 Vickers.
La resistencia a la tracción es de 36, 6 a 42,2 Kg por milímetro cuadrado.

El limite de fluencia es de 23,6 a 38,1 Kg por milímetro cuadrado.
El alargamiento s/ 50mm. es de 38 a 20,6 %.
La estricción es de 53 a 62,7 %.
Los colores mas requeridos son: Plateado, bronceado y negro, bajo pedido, se pueden hacer otros recubrimientos. La capa de estos recubrimientos es de 7 a 9 micrones y con una resistencia a la niebla salina de 96 horas.


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