Method for making shadow mask for color picture tube

Details Method for making shadow mask for color picture tube Method for making shadow mask for color picture tube

1996-07-24

1998-11-24

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

H01J 2907

Patent

active

058399356

ABSTRACT:
Disclosed is a method for making a shadow mask for a color picture tube. First, a flat AK steel plate is pressed to form an AK steel shadow mask. And then, the AK steel shadow mask is surrounded with minute metal particles and is heated in a neutral or reduction heating furnace, thereby forming an alloy layer on a surface of the AK steel shadow mask.

REFERENCES:
patent: 4442376 (1984-04-01), Van Der Waal et al.
patent: 4629932 (1986-12-01), Tokita
patent: 5752755 (1998-05-01), Rho et al.

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