PROCESS AND APPARATUS FOR ANNEALING CAN BODIES

摘要

An apparatus for automatically annealing end portions of wall-ironed drawn can bodies and welded side seam can bodies formed of sheet steel to reduce stresses therein wherein the end portions may be flanged without cracking, wrinkling or folding. The can bodies are moved along a continuous path by a rotary table and are supported for rotation about their own axes during such movement. Associated with each rotating can body is a blowing hood for developing a protective gas atmosphere surrounding the portion of the can body to be annealed. The blowing hoods and associated can body upper and portions pass through an annealing zone defined by an elongated induction loop. The apparatus is particularly useful in annealing processes for sheet metal formed of unkilled steel.