With the rapid development of industry in recent years, many alloy sheet and strip products, led by aluminum circles, are gradually being applied to various industries, which greatly promoted the growth of industry and economic development. As people's demands for quality of life continue to increase, the variety and functional improvement of alloyware cookware is also increasing. By expounding the production process of cookware, this paper focuses on the process performance and advantages of aluminum alloy circles used in the manufacture of cookware, highlighting the remarkable characteristics of aluminum alloy circles in the manufacture of cookware.
With the improvement of people's quality of life, the style and function of cookware are diversified, and it is also required to optimize technology and materials in production and processing to improve the performance of cooking utensils. Different single metal or alloy materials are used for mold production. The shape control and attribute control of the metal are realized by special tool operation, and the process optimization and rapid production of the cookware are realized. Therefore, the selection of the metal material becomes It is important. The aluminum alloy circles discussed in this paper show a sufficiently strong superiority in the manufacture of cookware, and are the most widely used aluminum alloy sheet and strip deep processing products.
1 aluminum alloy circles overview
1.1 The nature of aluminum
Aluminum, the chemical element name is Al. It is a light metal in the earth's crust that is second only to oxygen and silicon, and its compound composition can be easily found in nature. Aluminum is the second largest metal in the metal varieties required by the industry, and its production, sales and industrial use are second only to steel. Aluminum metal itself has a silver-white metallic luster. The texture of pure aluminum is extremely soft, with special physical and chemical properties. The weight is light but the hardness is not low, and it has good ductility and strong plasticity. It has special conductivity, thermal conductivity, heat resistance and nuclear radiation resistance. Since the outer surface of the metal aluminum is protected by an extremely dense oxide film (alumina), it is not easily corroded by acid, but can be alkalized. Dissolved. These characteristics are sufficient to make aluminum metal an important strategic raw material for the development of the national economy.
1.2 aluminum circles
aluminum circles are widely used in electronic equipment components, daily chemical products, medical equipment, culture and education and auto parts, household appliances, insulation equipment, machinery manufacturing, automotive, aerospace, military, mold, construction, printing and many other industries, it is the largest amount One of the deep processing products of aluminum alloy sheet and strip. In these applications, cookware, as the most concentrated product with aluminum circles, is actively improving the manufacturing level to ensure the optimization of process performance, making aluminum circles show more advantages in cookware manufacturing.
The most advanced equipment for the production of aluminum circles is the aluminum circle unwinding and blanking production line. This automatic production line is a fully automatic aluminum circle production equipment, which can effectively improve the material utilization rate, far superior to other circles. The aluminum circle unwinding and blanking production line equipment can directly complete the circle punching and blanking without cutting and cutting on the aluminum coil. The products are widely used in the aluminum processing circles of the aluminum processing industry.
2 Cookware manufacturing
According to incomplete statistics, about half of the world's cooking utensils are made of aluminum. The heat efficiency of cooking is as high as 93%, while stainless steel and cast iron are only 1/3 of aluminum. The use of aluminum circles 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 the production of a good diet.
The production process of the cookware mainly includes cutting, 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 place 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. Anodized aluminum has a protective effect on the surface, which is hard and hard to react with other substances. At present, most of the cookware on the market is mainly manganese-aluminum alloy. The combination of manganese and aluminum metal in the manufacture of cookware can effectively promote each other's physical and chemical properties.
The deep drawing is mainly done by means of a mold on a hydraulic press. The production mold basically has two kinds of concave molds and convex molds, or static molds and dynamic molds. The deep drawing process is to force the material to pull down in the die by pressing down the punch, and gradually form the shape of the cookware. The selection of the mold satisfies the wear resistance, the toughness, the fatigue fracture property is not outstanding, the tempering stability is better, the cold and hot fatigue resistance, and the corrosion resistance are satisfied.
3 Process performance and advantages of aluminum cookware
Through the introduction of the whole process of cookware manufacturing, we can see that the cookware made of aluminum-manganese alloy circles retains all the physical and chemical properties of the aluminum alloy. Since the aluminum alloy has a soft texture and can be greatly extended, it is possible to change various shapes and styles when manufacturing the cookware. After the product is formed, the surface particles are uniform in thickness, without drawing, padding and scratching, and the dimensional accuracy meets the dimensional requirements.
The process performance of aluminum-manganese alloy circles in the manufacture of cookware, we will be insensitive to forgeability, machinability, rust and corrosion resistance, quenching deformation cracking tendency, grindability, shrinkage, thermal cracking, airtightness Sexuality and other aspects to examine.
The forgeability of an aluminum-manganese alloy is also referred to as the ductility of aluminum. It can directly draw two times in the drawing process of the cookware to directly explain the special characteristics of aluminum metal in forgeability.
Machinability and grindability illustrate the advantages of aluminum-manganese alloys in the manufacture of cookware from two different processing methods. Through continuous cutting and grinding, it can become uniform particles, smooth surface gloss, no drawing, pad printing, scratching and so on. The cookware thus obtained naturally reflects the excellent workmanship and beauty.
Anti-rust and anti-corrosion properties are due to the addition of manganese alloy elements to aluminum metal. The cookware products have excellent anti-rust properties, and have good formability, weldability and corrosion resistance.
The shrinkage of the alloy has a decisive influence on the quality of the manufacture of the cookware. It affects the formation of cracks and changes in size.炊 It may become unsaleable due to size non-conformity. The aluminum-manganese alloy has strong shaping ability and moderate hardness, and can stabilize its dimensional change.
In the manufacture of cookware, aluminum-manganese alloys do not have cracks, mainly because their shrinkage stress is far beyond the bonding force between metal grains, and each surface maintains a remarkable metallic luster.
The composition properties of the aluminum-manganese alloy directly affect the gas-tight process performance of the alloy. If the initial solidification range of the alloy is smaller, the smaller the tendency of looseness between the molecules, and the smaller the pores capable of maintaining gas evolution, the higher the degree of airtightness of the alloy.
It is precisely because the aluminum-manganese alloy disc can fuse the characteristics of the elements in the alloy in the manufacture of the cookware to achieve better process performance, so that the aluminum disc can be the best choice for the manufacture of the cookware in many metal materials.
4 Conclusion
In order to improve the quality and performance of cookware manufacturing, it is necessary to analyze and select the condition of metal materials in the manufacture of cookware. By expounding the production process of cookware, this paper focuses on the process performance and advantages of aluminum alloy wafers used in the manufacture of cookware, highlighting the remarkable characteristics of aluminum alloy discs in the manufacture of cookware. Through analysis, we know that to maintain the good process performance of the cookware products, aluminum plates including aluminum alloy discs should be selected to complete the cookware manufacturing.
