A kind of aluminum alloy strip material for automobile heat shield and its manufacturing method
A technology of an aluminum alloy strip and a manufacturing method, which are applied to the aluminum alloy strip for automobile heat shields and the manufacturing field thereof, can solve the problems of poor sound blocking efficiency, low strength and corrosion resistance, and a large proportion of steel heat shields. , to achieve the effect of improving elongation, good surface quality and high strength of finished products
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Embodiment 1
[0022] The composition of the aluminum alloy strip is calculated by mass percentage: iron 0.10%, silicon 0.05%, copper 0.01%, manganese 0.45%, magnesium 4.76%, chromium 0.08%, zinc 0.01%, titanium 0.01%, others: 0.05%, the rest It is aluminum, and the sum of the content ratios of each component is 100%.
[0023] A method for manufacturing an aluminum alloy strip for an automobile heat shield according to the following steps:
[0024] 1) At a temperature of 730°C, add Al-5Ti-0.2B grain refiner to the molten aluminum and use argon gas with a purity ≥ 99.999% for refining, then use a low-level semi-continuous casting method to refine the molten aluminum After standing for 0.5 hours, it is cast into an aluminum alloy flat ingot with specifications of (thickness: 560mm)*(width: 1310mm)*(length: 8000mm);
[0025] 2) The slab ingot enters the heating furnace for heating after sawing and face milling. The heating temperature is 500°C and the holding time is 4 hours. The finishing mi...
Embodiment 2
[0034] The composition of the aluminum alloy strip is calculated by mass percentage: iron 0.15%, silicon 0.10%, copper 0.12%, manganese 0.20%, magnesium 4.5%, chromium 0.10%, zinc 0.02%, titanium 0.015%, others: 0.05%, the rest Aluminum, the sum of the mass percentages of each component is 100%.
[0035] 1) At a temperature of 690°C, add Al-5Ti-0.2B grain refiner to the molten aluminum and use argon gas with a purity ≥ 99.999% for refining, then use a low-level semi-continuous casting method to refine the molten aluminum After standing for 1 hour, it is cast into an aluminum alloy flat ingot with specifications of (thickness: 560mm)*(width: 1310mm)*(length: 8000mm);
[0036] 2) The slab ingot enters the heating furnace for heating after sawing and face milling. The heating temperature is 450°C and the holding time is 8 hours. The finishing mill is continuously rolled into a hot-rolled strip with a thickness of 2.0 mm. In order to ensure the quality and efficiency of the hot r...
Embodiment 3
[0045] The composition of the aluminum alloy strip is calculated by mass percentage: iron 0.05%, silicon 0.20%, copper 0.15%, manganese 0.30%, magnesium 5.0%, chromium 0.01%, zinc 0.25%, titanium 0.15%, others: 0.05%, the rest Aluminum, the sum of the mass percentages of each component is 100%.
[0046]1) At a temperature of 710°C, add Al-5Ti-0.2B grain refiner to the molten aluminum and use argon with a purity ≥ 99.999% for refining, then use a low-level semi-continuous casting method to refine the molten aluminum After standing for 0.7 hours, it is cast into an aluminum alloy flat ingot with specifications of (thickness: 560mm)*(width: 1310mm)*(length: 8000mm);
[0047] 2) The slab ingot enters the heating furnace for heating after sawing and face milling. The heating temperature is 520°C and the holding time is 1 hour. The finishing mill is continuously rolled into a hot-rolled strip with a thickness of 7.0mm. In order to ensure the quality and efficiency of the hot-rollin...
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