FIELD: compositions of steels; improved quality of surfaces of aluminum blanks.
SUBSTANCE: proposed method includes the following stages: preparation of molten aluminum alloy from 7xxx group of registered Aluminum Association alloys not practically containing Be; addition of approximately 0.0005 to 0.5 mass-% of Ca and grain-grinding additive to molten aluminum alloy; grain-grinding additive is selected from group consisting of mass-%: 3Ti-1B-Al, 3Ti-0.15C-Al; then casting of aluminum alloy is performed for obtaining blank.
EFFECT: improved surface properties of blank cast from aluminum alloy.
11 cl, 8 dwg, 2 tbl, 17 ex
| Title | Year | Author | Number |
|---|---|---|---|
| 7xxx SERIES ALUMINUM ALLOY PRODUCT | 2019 |
|
RU2778434C1 |
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| ARTICLE FROM Al-Zn-Mg WITH HIGHER SENSITIVITY TO QUENCHING | 2009 |
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RU2503735C2 |
| PERMANENT-MAGNET MATERIALS AND THEIR MANUFACTURING PROCESSES | 1993 |
|
RU2113742C1 |
| ALLOY Al-Zn-Mg-Cu | 2004 |
|
RU2353693C2 |
