Method for making shadow mask for color picture tube and a shado

Details Method for making shadow mask for color picture tube and a shado Method for making shadow mask for color picture tube and a shado

1996-07-05

1998-05-19

Ramsey, Kenneth J.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

445 47, H01J 2907

Patent

active

057527555

ABSTRACT:
A shadow mask for color picture tubes made of AK steel has an Ni layer on its surface so that an Fe-Ni alloy layer is obtained in a hydrogen heating furnace to induce substance diffusion of both the Ni layer and the AK steel shadow mask. A method for making shadow mask for color picture tubes including the steps of making a main flat shadow mask body with AK steel, coating its surface with Ni, forming an Fe-Ni alloy layer on the main flat shadow mask, and pressing the main flat shadow mask body to form a certain shape.

REFERENCES:
patent: 4292565 (1981-09-01), Kanto
patent: 5170093 (1992-12-01), Yamamoto et al.
patent: 5433974 (1995-07-01), Lee

Affiliated with

Also associated with

Rating

Method for making shadow mask for color picture tube and a shado does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making shadow mask for color picture tube and a shado, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making shadow mask for color picture tube and a shado will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1846961