- Fe-Ni based alloy for semi tension mask with excellent magnetic special and semi tension mask and collar braun tube using said alloy

摘要

PURPOSE: To solve the problem of deterioration in magnetic shielding property and increase in the amount of beam drift, caused when the invar alloy used in press type is used as a semi-tension mask type mask material to be formed into mask by applying tension. CONSTITUTION: The Fe-Ni alloy for semi-tension mask has a composition consisting of, by mass, 34-45% Ni, 0.01-0.5% Mn and the balance Fe with inevitable impurities. Further, in the surface of the alloy sheet after final cold rolling, the sum of (111) aggregation degree and (220) aggregation degree, (111)+(220), represented by the following equation £1| is regulated to = 15%.