ELECTROMAGNETIC INDUCTING HEATING COOKING APPLIANCE OF WHICH NON MAGNETIC MAIN BODY IS EITHER WELDED WITH CLOSELY JOINING MEMBER BY RESISTANCE WELDING OR CAST TOGETHER WITH HEATING PLATE OF MAGNETIC MATERIAL TO BE SOLDERED AFTER THE RESISTANCE WELDING

摘要

PURPOSE: To provide a cooking appliance with high thermal conductivity and high adhesion strength of a heating plate to a main body by carrying out resistance welding of a closely joining member to a heating plate of a magnetic material and further carrying out soldering and then fixing by casting the joining member together with the main body of a non magnetic material. ;CONSTITUTION: A closely joining member 5 made of a steel, e.g. gold steel, is set in a lower electrode 4 of resistance welding electrodes, a heating plate 1 of a magnetic material is fixed between an upper electrode 7 and the lower electrode 4 of the resistance welding electrodes through the closely joining member 5, and then the closely joining member 5 and the heating plate 1 are melted and joined each other by resistance welding. While the closely joining member 5 of the heating plate 1 being set in the front, the resulting body is fixed in dies and a electromagnetic induction heating cooking appliance 3 is cast by casting the heating plate 1, which is made of a magnetic material and welded with the closely joining member 5, together with a main body 2 made of a non magnetic material by aluminum die cast. Since the main body 2 is made of aluminum, the appliance 3 is made light in weight and since the heating plate 1 made of a magnetic material is used as the bottom face, heat transmission can be carried out efficiently and heat radiation is also carried out efficiently.;COPYRIGHT: (C)1996,JPO