A SYSTEM FOR TRANSMITTING SIGNALS REPRESENTING ALARM CONDITIONS FROM A PLURALITY OF PERIPHERAL STATIONS TO A CENTRAL STATION.

摘要

In the process for producing low-carbon sheet steel for magnetic applications, wherein the steel is hot rolled to sheet having a thickness of 0.050 to 0.100 inch such that the temperature thereof is 1900 to 2030°F when the steel is about one inch thick, 1430 to 18,20oF when hot rolling is finished, and 900 to 1200"F when the steel is coiled and wherein the steel is cleaned, cold-rolled to effect a thickness reduction of 40 to 80%, and annealed to effect recrystallization, the improvement comprising temper rolling the steel after annealing to effect a plastic elongation of 6 to 10%. ?? ?? ?? ?? -i