CONVECTOR RING FOR ANNEALING COLD-ROLLED STEEL STRIPS IN ROLLS IN BELL-TYPE FURNACES Russian patent published in 2006 - IPC C21D9/673 

FIELD: metallurgy; annealing stack of rolls of cold-rolled steel strips.

SUBSTANCE: convector ring is provided with disk having central hole for smooth heating and cooling the roll; said disk consists of several elements forming expansion seams and bearing radial fins forming circulating passages and covering expansion seams. Clearance provided between outer and inner elements of disk is located on section of 0.50-0.75 of ring radius; radial fins have grooves on bearing surfaces of their ends which project inside ring. These grooves prevent roll turn from slipping into inner hole of convector ring during annealing.

EFFECT: low cost of manufacture of convector rings; enhanced operational stability.

3 dwg