Title:
７ｘｘｘ系半連続（ＤＣ）鋳造インゴットの低下した割れ感受性
Document Type and Number:
Japanese Patent JP7346743
Kind Code:
B2
Abstract:
Process control of intense stirring along a solidification front and adjustments in casting speeds during direct chill casting of 7xxx series alloys can decrease an ingot’s cracking susceptibility. Intense stirring control is used to reduce the thickness of the solidification front, promote agglomeration of hydrogen gas rejected at the solidification front, remove impurities rejected at the solidification front, and improve grain size. Intense stirring control is used to operate at faster casting speeds without risk of increasing the thickness of the solidification front. Optional reheating during casting to promote dispersoid formation is used to generate a high-strength zone of dispersoid-strengthened solidified metal in the outer periphery of the ingot, which can further decrease the ingot’s susceptibility to cracking.
Inventors:
Wagstaff, Samuel Robert
Wagstaff, Robert Bruce
Wagstaff, Robert Bruce
Application Number:
JP2022536647A
Publication Date:
September 19, 2023
Filing Date:
December 18, 2020
Export Citation:
Assignee:
NOVELIS INC.
International Classes:
B22D11/049; B22D11/00; B22D11/115; B22D21/04
Domestic Patent References:
| JP2006507950A | ||||
| JP2012006062A | ||||
| JP2019513082A | ||||
| JP2009513357A | ||||
| JP7068345A |
Foreign References:
| WO2019106254A1 | ||||
| WO2019235613A1 | ||||
| WO2019099480A1 |
Attorney, Agent or Firm:
Michiko Matsutani
Masayuki Shikimi
Masayuki Shikimi
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