Aluminum cans for cans call for high technology

Aluminum alloy strips for can making are high-precision and ultra-thin aluminum panels. Their products require high dimensional accuracy, excellent surface quality and internal quality. This product has long been a short-term product in our country. Every year, the country must spend a lot of foreign exchange imports. According to the survey, there are currently nearly 30 two-piece canned container plants in China, with an annual production capacity of approximately 13 billion, and annual production of aluminum alloy cans of approximately 180,000 tons. So far, the aluminum alloy strips for domestic canning have been almost 95. More than % depends on imports. The main reason is:

1. The aluminum alloy strip for can making is the most representative product of high-precision aluminum strip. High quality requirements, complex production processes, and difficult control of the production process.

2. The level of automation of the canned production lines that have been built and under construction in China is getting higher and higher, and the quality requirements for the aluminum alloy strips used for can making are becoming higher and higher.

3. The large-scale aluminum processing equipment for producing can-making materials is mainly hot strip mills and cold-rolling mills, which require high installation level and control means and are expensive.

Although there is no uniform standard for the technical performance of tank materials in China so far, the principle of meeting the actual production requirements of can making plants is generally adopted, which further increases the difficulty of product production. In fact, due to the fact that the production conditions of various canneries are not the same, the requirements for technical performance of the can body blanks cannot be exactly the same.

Aluminum alloy strips for can making require good deep-drawing performance, fatigue resistance, corrosion resistance, excellent surface quality, high strength, sufficient plasticity, and strict dimensional deviations. To achieve these quality requirements, materials are required to have the right alloy composition, good metallurgical quality, reasonable structure and shape tolerances.

At present, China has introduced two advanced 1+4 hot rolling production lines, and its leading product targets are all aimed at aluminum cans for can making. We are looking forward to the can production of aluminum alloy strip products can bring China's high-precision aluminum strip to a new level.

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