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Aluminum alloys for highly shaped packaging products and methods of making the same

A technology of aluminum alloys and alloys, applied in the field of making these alloys, to achieve an economical and sustainable production process

Inactive Publication Date: 2017-11-28
NOVELIS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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This makes meeting mechanical performance requirements more challenging

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  • Aluminum alloys for highly shaped packaging products and methods of making the same
  • Aluminum alloys for highly shaped packaging products and methods of making the same
  • Aluminum alloys for highly shaped packaging products and methods of making the same

Examples

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example 1

[0084] In one aspect, the alloys described herein are produced by a thermomechanical process comprising DC casting, homogenization, hot rolling, optional batch annealing, and cold rolling. figure 1 A schematic representation of this process is shown in .

[0085] In the homogenization step, the ingot is heated to less than about 630°C (preferably in the range of about 500°C to about 630°C) at a rate of about 20°C / hour to about 80°C / hour and soaked for 1 to 6 hours, optionally comprising the step of cooling to a temperature in the range of about 400°C to about 550°C and soaking for 8 to 18 hours.

[0086] In the hot rolling step, the homogenized ingot is placed in a temperature range of about 400°C to about 580°C, billeted and rolled, hot rolled to a specification range of about 1.5mm to about 3mm, and heated at a temperature of about 250°C to about 580°C. coils in the temperature range of about 380°C for self-annealing.

[0087] In an optional batch anneal, the HB coil is h...

example 2

[0091] In another aspect, the alloys described herein are produced by DC casting, homogenization, hot rolling, optionally batch annealing, cold rolling, rapid annealing and finish cold rolling. figure 2 A schematic representation of this process is shown in .

[0092] DC casting, homogenization, hot rolling and optional batch annealing are described in Example 1.

[0093] In the cold rolling process step, the HB is cold rolled to an intermediate anneal gauge that is about 10 to 40% thicker than the final preform.

[0094] In the rapid annealing step (H191 temper), the cold-rolled sheet is heated to a range of about 400°C to about 560°C for up to about 10 minutes at a heating rate of about 100°C / sec to about 300°C / sec, and This is followed by quenching to a temperature below 100°C by air quenching or water / solution quenching at a rapid cooling rate, for example, from about 100°C / sec to about 300°C / sec. This step achieves dissolution of most of the solution elements back into...

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Abstract

The disclosure is related to new, formable and strong aluminum alloys for making packaging products such as bottles and cans.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 62 / 132,534, filed March 13, 2015, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention provides novel aluminum alloys for use in making packaged products including bottles, and methods of making these alloys. Background technique [0004] There are several requirements for the alloys used in forming aluminum bottles, namely alloy formability, bottle strength, lug making, and alloy cost. Current alloys used to form bottles cannot meet all of these requirements. Some alloys have high formability but low strength; other alloys that are sufficiently strong have poor formability. Furthermore, current bottle alloys use a large portion of high-quality aluminum in casting, making their production expensive and unsustainable. [0005] Highly formable alloys for use in the manufacture of highly fo...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/02C22C21/08C22C21/10C22C21/18C22F1/04C22F1/043C22F1/047C22F1/053C22F1/057
CPCC22C21/00C22C21/02C22C21/08C22C21/10C22C21/14C22C21/16C22C21/18C22F1/04C22F1/043C22F1/047C22F1/053C22F1/057C22C21/06C22C21/12C21D9/46C21D8/0226C21D8/0236C21D8/0263C21D1/26C22C1/02
Inventor W.温J.吴D.姜
Owner NOVELIS INC
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