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Latón Notas | Véxase tamén | Menú de navegaciónDicionario da Real Academia GalegaPortal das PalabrasNewnes Engineer's Reference Book"Mass, Weight, Density or Specific Gravity of Different Metals"Materials and design: the art and science of material selection in product designBearings and bearing metals300010946590982939014ID4169517-3sh850164315408

QuímicaAliaxesMetais e aliaxes de cuñaxe


aliaxecobrecincforxalingoteslaxesaramesdensidadepunto de fusiónbronceestañoourofricciónválvulasfontanaríainstrumentos musicaistrompetascampás












Latón




Na Galipedia, a Wikipedia en galego.






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Produto fabricado con latón, ferrollo de HerBron.





Billa de latón.


O latón[1] é unha aliaxe de cobre e cinc. As proporcións de cobre e cinc poden variar para crear unha variedade de latóns con propiedades diversas.[2] Nos latóns industriais a porcentaxe de cinc mantense sempre inferior ó 50%. A súa composición inflúe nas características mecánicas, a fusibilidade e a capacidade de conformación por fundición, forxa, troquelado e mecanizado.[3] En frío, os lingotes obtidos poden transformarse en laxes de diferentes espesores, varelas ou cortarse en tiras susceptibles de estirárense para fabricar arames. A súa densidade tamén depende da súa composición. En xeral, a densidade do latón rolda entre 8,4 g/cm³ e 8,7 g/cm³.[4] O seu punto de fusión está entre os 900 e os 940 °C, dependendo da composición.


No presente, case o 90% do latón é reciclado.[5] Aínda que o bronce é unha aliaxe de cobre con estaño,[6] algúns tipos de latóns denomínanse 'bronces'.[7] O latón é unha aliaxe que se utiliza para decoración debido a que o seu brillo dá un aspecto similar ó do ouro, para aplicacións en que se require baixa fricción, como fechaduras e válvulas, para fontanaría e aplicacións eléctricas, e, cumpridamente, en instrumentos musicais como trompetas e campás, ademais de pratos de baixo custo polas súas propiedades acústicas.



Notas |




  1. ↑ Definicións no Dicionario da Real Academia Galega e no Portal das Palabras para latón.


  2. ↑ Engineering Designer 30(3): 6–9, May–June 2004


  3. ↑ Frederick James Camm (1949). Newnes Engineer's Reference Book. George Newnes. p. 594. 


  4. ↑ Walker, Roger. Density of Materials, ed. "Mass, Weight, Density or Specific Gravity of Different Metals". United Kingdom: SImetric.co.uk. Consultado o 9 de xaneiro de 2009. brass – casting, 8400–8700... brass – rolled and drawn, 8430–8730 


  5. ↑ M. F. Ashby; Kara Johnson (2002). Materials and design: the art and science of material selection in product design. Butterworth-Heinemann. pp. 223–. ISBN 978-0-7506-5554-5. Consultado o 12 de maio de 2011. 


  6. ↑ Machinery Handbook, Industrial Press Inc, New York, Edition 24, p. 501


  7. ↑ Bearings and bearing metals. The Industrial Press. 1921. p. 29. 



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