Hook spring of shadow mask frame assembly for color cathode ray tube

摘要

A hook spring of a shadow mask frame assembly for a cathode ray tube is formed by joining two metals having different thermal expansion coefficients over a predetermined range of temperatures. One ends of the hook spring is coupled with a stud pin installed at the inner side of a panel and the other end is coupled with a circumferential surface of a frame. The two metals are stainless steel and N48, and a volume ratio of the stainless steel and N48 is 5:5 to 6:4. Excessive compensation for thermal expansion of the shadow mask frame assembly can be reduced in the range of 80 DEG DIFFERENCE 120 DEG C.