PREPARATION OF FRAME HOLDER FOR COLOR CRT
PURPOSE:To enable the preparation of a mask holder excellent in flexibility at low cost, by a method wherein the frame holder of a color CRT is fabricated from austenite type stainless steel and subjected to heat treatment under a specific condition. CONSTITUTION:The frame holder for a color CRT is...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To enable the preparation of a mask holder excellent in flexibility at low cost, by a method wherein the frame holder of a color CRT is fabricated from austenite type stainless steel and subjected to heat treatment under a specific condition. CONSTITUTION:The frame holder for a color CRT is prepared by a method wherein austenite type stainless steel consisting of 8.00-9.50% Ni, 18.0-19.0% Cr, 0.10-0.15% C, 0.80-1.50% Mn, less than 1.00% Si, less than 0.30% S, less than 0.04% P and the remainder Fe is used as a base material to be rolled at final draft of 50-70% and the obtained steel strip is subjected to press processing to be formed into a predetermined dimension. The resulting steel strip is subjected to heat treatment at 500-550 deg.C for 15-60min to obtain the frame holder for a color CRT having characteristics equal to a conventional expensive inconel or SUS631 at low cost. |
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