8011 H16 Aluminum Alloy Sheets for Closures

Production Technology of 8011 H16 Aluminum Alloy Sheets for Closures
 
Aluminum and aluminum alloy bottle cap material is a new type of bottle cap sealing material. It is not only attractive and easy to open, but also has the function of preventing counterfeit goods. Therefore, it has been widely used in domestic and foreign beverage bottles, cosmetics bottles, bottles and other sealing packaging. 8011 H16 Aluminum Alloy Sheets for Closures as the main ROPP cover material, in addition to the requirements of the deep drawing of good performance, low earing rate, but also after the cap process has a certain strength after baking. At present, 8011 H16 Aluminum Alloy Sheets for Closures, punching the height of 50mm above the high cap after baking sheet, good stability, high tensile strength and high earing rate stable, punching bottle of high yield, good formability.



The 8011 H16 Aluminum Alloy Sheets for Closures production process is as follows:
 
Melting casting - Hot - Cold - hot rolling, cold rolling, annealing, intermediate, bending and straightening, slitting, packing / cutting.
 
Smelting and casting mainly control the content and proportion of 8011 aluminum alloy. The heating temperature is 500+/-5 degrees centigrade, and the holding time is not less than 20 hours. Ingot by "1+4" hot rolling billet, hot rolling, hot rolling finishing temperature control of more than 280 ℃.
 
8011 H16 Aluminum Alloy Sheets with 320 ℃ /3 hours of annealing process, the final cold rolling rate is about 52%, the longitudinal tensile strength of the alloy at 159Mpa, the elongation rate is more than 2.5%, earing rate is less than 3%, can obtain good comprehensive performance. After 210℃ bake for 12 minutes, 5 times after continuous baking, alloy tensile strength is more than 110Mpa, the elongation rate is more than 2%.