发明授权
US4536226A Method of manufacturing a shadow mask for a color cathode ray tube 失效
制造彩色阴极射线管荫罩的方法

Method of manufacturing a shadow mask for a color cathode ray tube
摘要:
A method of manufacturing a shadow mask includes the steps of perforating a number of apertures in a sheet of iron-nickel alloy, annealing the sheet, and forming the sheet, after annealing, into a shadow mask by pressing while the sheet is kept at a predetermined forming temperature effective to reduce the yield strength of the alloy.
公开/授权文献
信息查询
0/0