Method for forming a glass product for a cathode ray tube
AssigneeAsahi Glass Company, Limited
InventorsMasaru Yoshitake, Eiji Yanagisawa, Naoki Yoshida, Masuo Sugisaki, Atsuyoshi Takenaka, Yutaka Segawa, Toshihiro Ohashi, Hiroshi Wakatsuki
Life of this patent
Estimating the term…
Abstract
A glass forming mold which comprises a substrate made of stainless steel and a coating comprising the following components formed as the outermost surface coating on the substrate: (1) from 40 to 94 wt % of nickel and/or cobalt as component A; (2) from 5 to 59 wt % of tungsten as component B; and (3) from 0.5 to 40 wt % of at least one transition element having a melting point of at least 2,200.degree. C. as component C.
Claims4
A method for forming a glass product for a cathode ray tube which contains silicon oxide, sodium oxide, potassium oxide and lead oxide, by means of a glass forming mold which comprises a substrate made of stainless steel and a coating comprising the following components A, B and C formed as the outermost surface coating on the substrate:
- (1) from 40 to 94 wt % one nickel and/or cobalt as component A;
- (2) from 5 to 59 wt % of tungsten as component B;
- (3) from 0.5 to 40 wt % of at least one transition 5, element having a melting point of at least 2,200.degree. C. as component C, and
- (4) from 0.1 to 20 wt % of phosphorus and/or boron as component D.
A method for forming a glass product for a cathode ray tube which contains silicon oxide, sodium oxide, potassium oxide, strontium oxide and barium oxide, by means of a glass forming mold which comprises a substrate made of stainless steel and a coating comprising the following components A, B and C formed as the outermost surface coating on the substrate:
- (1) from 40 to 94 wt % of nickel and/or cobalt as component A;
- (2) from 5 to 59 wt % of tungsten as component B;
- and
- (3) from 0.5 to 40 wt % of at least one transition element having a melting point of at least 2,200.degree. C. as component C.
A method for forming a glass product for a cathode ray tube which contains silicon oxide, sodium oxide, potassium oxide, strontium oxide and barium oxide, by means of a glass forming mold which comprises a substrate made of stainless steel, and a coating comprising the following components A, B and C formed as the outermost surface coating on the substrate:
- (1) from 40 to 94 wt % of nickel and/or cobalt as component A;
- (2) from 5 to 59 wt % of tungsten as component B;
- (3) from 0.5 to 40 wt % of at least one transition element having a melting point of at least 2,200.degree. C. as component C, and
- (4) from 0.5 to 20 wt % of phosphorus and/or boron as component D.
A method for forming a glass product for a cathode ray tube which contains silicon oxide, sodium oxide, potassium oxide and lead oxide, by means of a glass forming mold which comprises a substrate made of stainless steel and a coating comprising the following components A, B and C formed as the outermost surface coating on the substrate:
- (1) from 40 to 94 wt % of nickel and/or cobalt as component A;
- (2) from 5 to 59 wt % of tungsten as component B;
- and
- (3) from 0.5 to 40 wt % of at least one transition element having a melting point of at least 2,200.degree. C. as component C.
Dependencies are inferred from the claim text.