Device for drape drawing a shadow mask for a color display tube

Details Device for drape drawing a shadow mask for a color display tube Device for drape drawing a shadow mask for a color display tube

1987-05-26

1988-07-05

Bray, W. Donald

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72342, 72347, B21D 2200

Patent

active

047546352

ABSTRACT:
Device to drape draw a nickel-iron alloy, etched-aperture sheet, including means to heat the sheet at a temperature between 150.degree. and 250.degree. C. during drawing, whereby a 0.2% proof stress of the shadow mask material is reached below a tensile stress of 150.sup.N
m.sup.2. Accurate reproduction of shadow masks is thereby achieved with minimized detrition of the tooling.

REFERENCES:
patent: 3340714 (1967-09-01), Pohl et al.
patent: 3528276 (1970-09-01), Schmidt et al.
patent: 3584487 (1971-06-01), Carlson
patent: 3703093 (1972-11-01), Komatsu et al.
patent: 4090389 (1978-05-01), van Denderen et al.
patent: 4145903 (1979-03-01), Leach et al.

Affiliated with

Also associated with

Rating

Device for drape drawing a shadow mask for a color display tube does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2325640