Can aluminium coil 5052 for caps be used in aluminum cans? - Printable Version +- ask aluminium Forum (https://www.askaluminium.com) +-- Forum: My Category (https://www.askaluminium.com/Forum-My-Category) +--- Forum: aluminium faq (https://www.askaluminium.com/Forum-aluminium-faq) +--- Thread: Can aluminium coil 5052 for caps be used in aluminum cans? (/Thread-Can-aluminium-coil-5052-for-caps-be-used-in-aluminum-cans)

Can aluminium coil 5052 for caps be used in aluminum cans? - aadaasdark8072 - 09-26-2018 Aluminum cans are the most commonly used beverage packaging materials in life. The aluminum for cans is mainly composed of three kinds of aluminum alloys with different compositions: 3004 aluminum for can body, 5052 aluminium coil for caps and 5182 aluminum for pull ring. Aluminum alloy is the key to making the can, the shape is not formed and the pull of the can lid can not open are all because of the aluminum alloy. Thus, the right aluminum alloy should be usedi n the right places of aluminum cans. The can body for aluminum cans is mainly made of 3004 aluminum alloy coil, and the 3004 aluminum coil is a variant alloy of 3003. It has good formability, weldability, corrosion resistance and solderability. Since aluminum itself has good oxidation resistance, it is well used in cans to prevent oxidation and corrosion of carbonated beverages on the can.   The caps for the aluminum cans is made of 5052 aluminium coil, and the ring for the pull ring is made of alloy 5182. Both 5052 alloy and 5182 alloy belong to the aluminum-magnesium alloy, which have good corrosion resistance, good weldability, cold workability, medium strength, and the surface is very bright after polishing. However, the 5182 alloy is relatively high in magnesium content compared to the 5052 aluminum  alloy sheet, and a small amount of silicon is added, so the weldability is better than that of the 5052 alloy. Therefore, the 5052 alloy is mostly used for the can lid, and the 5182 alloy is mostly used for the pull ring. RE: Can aluminium coil 5052 for caps be used in aluminum cans? - ohapuqa - 09-26-2018 The cans material is made of 5052 aluminum coil and 5182 alloy, and the magnesium content of 5052 alloy is low. 5182 alloy is a kind of alloy with high content of magnesium. The 5052 alloy is used a little more in the manufacture of the easel, accounting for about 60% of the total, and the thickness is mostly 0.22o. 26mm. 5052 for beverage and food LIDS without internal pressure, 5182 for beverage LIDS with internal pressure. It is the goal of the canning industry to reduce the thickness of sheet stock to the greatest extent in the production of cans, improve the product's extensibility and strength, improve the utilization rate of materials and reduce the production cost. At present, the thickness of tank cover is 0.27mm, 0.265mm, 0.26mm, 0.25mm, 0.24mm and 0.22mm. As the thickness of tank cover decreases, higher requirements are put forward for the mechanical properties of the base material. At the same time, the domestic lid industry develops continuously, the demand of base material increases, and the demand for delivery cycle is also put forward. At present, the period of mass production of tank cover substrate reaches 35 40 days, mainly because of the long process route of the production of tank cover substrate. At present, the production process of 5052 aluminum alloy tank cover base material is casting one saw cutting one milling surface one homogenized annealing one hot rolling one cold rolling I pass second one cold rolling 2 pass second one cold rolling 3 pass second one cold rolling 4 pass second one cold rolling 5 pass annealing one stretch rectifying - coating one finished cutting. The aluminum alloy is rolled in five passes in cold rolling. The excessive duration of the passes during the rolling process causes the temperature drop, so the annealing process is increased and the energy consumption cost is increased. In addition, it takes a long time to run up and down the cold rolling several times, and the work efficiency is low. In addition, in aluminum plate and strip processing, the traditional single-stand cold rolling machine mostly USES the whole oil as the cooling lubricant, which often causes the fire accident due to break of the belt. Another technological process for the production of 5052 aluminum alloy tank cover base material is smelting one saw cutting one milling surface one homogenized annealing one hot rolling one cold rolling one middle cutting edge one cold rolling one stretch bending one coating one finished shear; In the traditional 6-roll cold rolling process, edge thinning is easy to occur. In order to prevent the breaking of strip due to edge thinning, it is necessary to increase the middle edge trimming process, increase the operation time and reduce the yield due to edge trimming waste