COLOR-TUBE RIMBAND MANUFACTURING PROCESS Russian patent published in 2002 - IPC

FIELD: television engineering. SUBSTANCE: rimband manufacturing process includes covering steel sheet with zinc, rimband stamping from steel sheet using lubricant, degreasing the rimband, and giving it thermal treatment including its annealing and calcination followed by compression and gas evacuation. Thermal treatment involves oxidation-free reaction between steel and zinc to produce alloy. Zinc cover may be produced by using electrochemical technique. Color tube produced in this way incorporates steel rimband with its covering containing γ and δ phases obtained due to reaction between zinc and steel in the course of oxidation-free annealing. EFFECT: enhanced reliability of zinc-to-steel bonding. 3 cl, 3 dwg