Method for producing aluminum alloy
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakashi AISAKA
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Abstract
A method for producing an aluminum alloy includes: (i) an adjustment step of adjusting the composition of a raw material of the aluminum alloy to a specific composition; (ii) a continuous casting step of casting the raw material of the aluminum alloy having the composition adjusted in step (i) to produce an ingot; and (iii) a hot working step of performing hot working on the ingot produced in step (ii) such that a draft is appropriate according to the composition of the aluminum alloy.
Claims7
A method for producing an aluminum alloy for high-pressure gas storage, the method comprising:
- (i) an adjustment step of adjusting a composition of a raw material of the aluminum alloy such that the raw material of the aluminum alloy contains, when an entirety of the raw material of the aluminum alloy is 100 mass %, Cu in a range of 0.15 mass % or more and 0.40 mass % or less, Si in a range of 0.65 mass % or more and 0.80 mass % or less, Al, and unavoidable impurities;
- (ii) a continuous casting step of casting the raw material of the aluminum alloy having the composition adjusted in the step (i) to produce an ingot;
- and
- (iii) a hot working step of performing hot working on the ingot produced in the step (ii) such that a draft is 40% or more.
A method for producing an aluminum alloy for high-pressure gas storage, the method comprising:
- (i) an adjustment step of adjusting a composition of a raw material of the aluminum alloy such that the raw material of the aluminum alloy contains, when an entirety of the raw material of the aluminum alloy is 100 mass %, Cu in a range of 0.15 mass % or more and 0.40 mass % or less, Si in a range of 0.65 mass % or more and (0.6002×Cu content (mass %)+0.5606) mass % or less, Al, and unavoidable impurities;
- (ii) a continuous casting step of casting the raw material of the aluminum alloy having the composition adjusted in the step (i) to produce an ingot;
- and
- (iii) a hot working step of performing hot working on the ingot produced in the step (ii) such that a draft is less than 40%.
A method for producing an aluminum alloy for high-pressure gas storage, the method comprising:
- (i) an adjustment step of adjusting a composition of a raw material of the aluminum alloy such that the raw material of the aluminum alloy contains, when an entirety of the raw material of the aluminum alloy is 100 mass %, Cu in a range of 0.15 mass % or more and 0.40 mass % or less, Si in a range of (0.6002×Cu content (mass %)+0.5606) mass % or more and 0.80 mass % or less, Al, and unavoidable impurities, excluding a composition in which the Cu content is 0.15 mass % and a Si content is 0.80 mass %;
- (ii) a continuous casting step of casting the raw material of the aluminum alloy having the composition adjusted in the step (i) to produce an ingot;
- and
- (iii) a hot working step of performing hot working on the ingot produced in the step (ii) such that a draft is 40% or less.
Dependencies are inferred from the claim text.