1235 Alu foil 9 mic for lamination
Due to its low investment and simple process, 1235 Alu foil 9 mic for lamination casting and rolling is the main billet-making method for aluminum foil production in my country. However, the cast-rolled billet is prone to form pinholes during foil rolling. This article is to address this common quality problem. The grain size, the size and distribution of compound particles, and the mechanical properties during the production of cast-rolled billet are discussed in detail. Assays and Research
1235 Alu foil 9 mic for lamination
1. During the casting and rolling process, some coarse compounds are formed inside the bad material. After cold rolling, the coarse compounds are broken. As the thickness of the blank decreases, the number of small particles increases and the area percentage increases, while the number of coarse particles decreases and the area percentage decreases.
2. The homogenization system has an important influence on the organization and properties of the material. After the homogenization annealing, the coarse compounds were dissolved into the matrix, and most of the compounds were reduced in size and some of the particles disappeared. With the extension of the homogenization time, the total area fraction of the compound gradually decreased, the number and area percentages of coarse particles with a size greater than 75 μm decreased, while the number and area percentages of fine particles with a size less than 5 μm remained basically unchanged. A more suitable homogenization annealing system is 580 ℃ for 8 hours.
3. The middle with fire system has an important influence on the weaving performance. When the fire is in the middle, the process of compound bath dissolution and supersaturated solid solution decomposition occurs inside the material. On the one hand, the unbalanced phase dissolves and enters the matrix, resulting in a decrease in the total area content of the compound; on the other hand, the precipitation of supersaturated solid solution leads to an increase in the area content of the compound. Found that 340-380 ℃ is the coarse compound particle
The size is relatively small, and 360-380 ℃ is the best range of grain and mechanical properties. Therefore, the annealing temperature of 360-380 ℃ should be used for the intermediate annealing.
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