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DRAPE EXTENTION OF SHADOW MASK FOR COLOR DISPLAY TUBE AND SHADOW MASK MANUFACTURED BY SUCH METHOD AND COLOR DISPLAY TUBE EMPLOYING SUCH SHADOW MASK
DRAPE EXTENTION OF SHADOW MASK FOR COLOR DISPLAY TUBE AND SHADOW MASK MANUFACTURED BY SUCH METHOD AND COLOR DISPLAY TUBE EMPLOYING SUCH SHADOW MASK
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机译:用这种方法制造的彩色显示管和荫罩的荫罩延展,以及用这种荫罩制造的彩色显示管
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摘要
A shadow mask sheet 1 for a colour display tube consisting of an iron-nickel alloy of the invar type is drape drawn by means of a drawing process. During said drawing process the shadow mask sheet 1 is provided with a skirt 2. By keeping the rim 16 of the skirt 22 clamped in a slip-free manner during the drawing process, the skirt 22 can be plastically deformed simultaneously with the formation of the skirt 22, as a result of which the reproducibility of the shape of the shadow mask sheet 1 is increased.
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