Application of Aluminum Circles in the Cookware Manufacturing Industry
The most advanced equipment for the production of aluminum circles finished product is the aluminum wafer unwinding and blanking production line, such an automated production line is a fully automatic integration aluminum circle production equipment that can effectively improve material utilization, far superior to other circle blanking methods. The aluminum circle unwinding and blanking production line equipment can directly complete the circle stamping and blanking without itemizing and cutting on the aluminum coil, products are widely used in aluminum processing manufacturing, such as cooking utensils for drawing aluminum circles and other industries.
According to incomplete statistics, about half of the world's cooking utensils are made of aluminum. The thermal efficiency of cooking is as high as 93%, while stainless steel and cast iron are only 1/3 of aluminum. The use of aluminum wafers to manufacture cookware will greatly increase the physical and chemical properties of the cookware, so that the electrical conductivity, thermal conductivity, heat resistance and other characteristics of the cookware can be improved, providing a guarantee for a good diet.
The production process of the cookware mainly includes blanking, deep drawing, splicing, whole bottoming and cleaning. In the blanking process, the metal materials produced by the cookware are first screened. Since the cookware needs to maintain good thermal conductivity and to achieve chemical stability during the high temperature grilling process, the metal materials produced by the cookware have a strict scope of investigation.
As a metal with extremely high thermal conductivity, aluminum does not rust and maintain resistance to various corrosion. Since aluminum is prone to aluminum oxidation in a position where no anodization occurs after long-term contact with some foods, a small amount of other metal elements are added to the aluminum material to improve performance when manufacturing the cookware. Aluminum is commonly found in the form of drawing, die casting or anodizing.
The stretched aluminum is formed by rotary stamping. Due to the softness of the aluminum material, magnesium, copper and bronze are added to form an aluminum alloy to increase the strength. Die-cast aluminum tends to be thicker than stretched aluminum, and this structure is more suitable for thick soup pots. Since die-cast aluminum is prone to extremely small pores in production, it has much lower thermal conductivity than stretched aluminum. Anodic alumina is protected by the formation of an oxide layer on the surface,it is hard and difficult to react with other substances.