Improvements in the object of the principal patent 524,583, granted on 10th April 1984: a method of manufacture of cooking utensils

摘要

The method of making cookware comprises cleaning at least one surface of a preshaped stainless steel utensil having a bottom wall and an aluminum disc. The utensil bottom wall and disc are heated separately in a manner which avoids hot spots until the temp. of the utensil is between 800-1200 deg.F and the temperature of the disc is between 500-750 deg.F. The heated disc is positioned with its cleaned surface overlying the cleaned bottom wall surface of the utensil and in direct contact with it. The surfaces are bonded directly together by applying pressure to the heated disc and utensil bottom wall. The bonded members are coded to a temp. less than about 250 deg.F and finally the members preheated to a temp. between 700 deg. F and about 950 deg. F.