Masking device for a flat-screen colour display tube of the...

H - Electricity – 01 – J

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H01J 29/07 (2006.01) C21D 6/00 (2006.01) C21D 8/02 (2006.01) C22C 30/00 (2006.01) C22C 38/00 (2006.01) C22C 38/06 (2006.01) C22C 38/08 (2006.01) C22C 38/12 (2006.01) C22C 38/14 (2006.01) C22C 38/44 (2006.01)

Patent

CA 2312415

Dispositif de masquage pour tube cathodique de visualisation en couleur à écran plat, du type comprenant un cadre support pour masque d'ombre tendu et un masque d'ombre tendu monté sur le cadre support de façon à être soumis à une tension à la température ambiante, dans lequel le cadre support est en alliage Fe-Ni durci ayant un coefficient de dilatation thermique entre 20°C et 150°C inférieur à 5x10-6/K et une limite d'élasticité Rp0,2 à 20°C supérieure à 700 MPa, et le masque d'ombre tendu est en alliage Fe-Ni ou FeNi durci ayant un coefficient de dilatation thermique entre 20°C et 150°C inférieur à 5x10-6/K.

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