DOUBLE COLD REDUCTION STRIP FOR SHADOW MASK AND PROCESS FOR PRODUCING THE SAME

摘要

The present invention discloses a double cold reduction strip for shadow mask and a process for producing the same, comprising the following procedures: converter steelmaking→continuous billet casting→hot rolling→pickling and cold rolling→continuous annealing→double cold reduction→finishing and oiling. The weight percentages of essential elements of the shadow mask strip are: C: ≦0.001%, Mn: 0.10˜0.40%, Al: 0.02˜0.06%, Si: ≦0.025%, P: ≦0.015%, S: ≦0.01%, O: ≦0.004%, with remainders composed of Fe and inevitable impurities. Through the composition design for the elements in steel material according to the present invention, on the one hand, the weight percentage of carbon is controlled at a low level; on the other hand, the middle decarburization annealing process is omitted, the annealing temperature is declined, the production period is shortened and the production cost is reduced; through the optimization for rolling parameters and roller processing in the double cold reduction, procedures for degreasing and finishing are removed, and steels with excellent mechanical property and high surface quality are obtained.

主权项

1. A double cold reduction strip for shadow mask, characterized in that the weight percentages of elements therein are designed as: C: ≦0.001%, Mn: 0.10˜0.40%, Al: 0.2˜0.06%, Si: ≦0.025%, P: ≦0.015%, S: ≦0.01%, O: ≦0.004%, with remainders composed of Fe and inevitable impurities.