Method for producing small-dimension aluminum alloy round ingot
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A manufacturing method and an aluminum alloy technology are applied in the manufacturing field of aluminum alloy round ingots, which can solve the problems of low ingot yield and cracking, ensure the surface quality, reduce the generation of cracked scraps, and solve the problem of ingot forming. low rate effect
Inactive Publication Date: 2013-02-20
NORTHEAST LIGHT ALLOY CO LTD
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Problems solved by technology
[0004] The present invention aims to solve the problem of low ingot yield due to cracking defects on the surface of the aluminum alloy round ingot manufactured by the existing method, and provides a method for manufacturing a small-sized aluminum alloy round ingot
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specific Embodiment approach 1
[0007] Specific embodiment one: the manufacture method of a kind of small size aluminum alloy round ingot of this embodiment is carried out according to the following steps: one, according to the mass percentage of element Fe in the aluminum alloy round ingot is 0.05%~0.25%, Cu 1.45%-1.70%, Mn 0.25%-0.55%, Mg 2.10%-2.60%, Cr 0.12%-0.20%, Zn 5.50%-6.30% and the balance of Al Weigh aluminum ingots, Aluminum-manganese alloy, aluminum-iron alloy, aluminum-chromium alloy, zinc ingot, copper ingot and magnesium ingot, then add aluminum ingot, aluminum-manganese alloy, aluminum-iron alloy and aluminum-chromium alloy into the resistance reverberatory furnace, and add copper when heating to 660-700°C For ingots and zinc ingots, continue heating to 720-740°C and then add magnesium ingots to obtain a melt after complete melting, and keep stirring the melt at 720-740°C for 10-15 minutes; 2. Put the melt at 730°C ~750℃ into the stationary furnace of the resistance reverberatory furnace, pa...
specific Embodiment approach 2
[0009] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step one, according to the mass percentage of elements in the aluminum alloy round ingot, Fe is 0.15%, Cu is 1.55%, Mn is 0.35%, Mg is 2.6%, Cr is 0.15%, Zn is 6% and the balance of Al weighs aluminum ingots, aluminum-manganese alloys, aluminum-iron alloys, aluminum-chromium alloys, zinc ingots, copper ingots and magnesium ingots. Other steps and parameters are the same as those in the first embodiment.
specific Embodiment approach 3
[0010] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, the stirred melt is convectively stirred from the furnace doors on both sides of the resistance reverberatory furnace. Other steps and parameters are the same as those in Embodiment 1 or 2.
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Abstract
The invention discloses a method for producing a small-dimension aluminum alloy round ingot. The problem that the yield of ingots is low caused by the fact that the surface of the aluminum alloy round ingot which is produced by a prior method has the crack defect is solved. The method comprises steps of taking and adding aluminum ingots, aluminum-manganese alloy, aluminum iron alloy, aluminum chromium alloy, zinc ingots, copper ingots and magnesium ingots to a resistance reverberatory furnace in accordance with the mass ratio of elements of the aluminum alloy round ingot, conducting complete melting and obtaining a molten body; and feeding the molten body to a stewing furnace of the resistance reverberatory furnace, feeding argon for fining, standing and preparing and obtaining the small-dimension aluminum alloy round ingot through a semi-continuous casting method. Different adding time is selected in accordance with properties of different alloy, the problem of full alloying of all elements is solved, the yield of ingots is high and reaches 90%, and the problem that the forming ratio of ingots produced by the prior method is low is solved, and the method is applied to the field of aluminum alloy production.
Description
technical field [0001] The invention relates to a method for manufacturing an aluminum alloy round ingot. Background technique [0002] Install a storage tank made of refractory and heat-insulating material on the top of the short crystallizer (that is, a hot roof), or line a layer of heat-insulating material on the upper part of the inner surface of the ordinary crystallizer. When casting, the traditional floating funnel is not used. Inside the storage tank The melt is kept at least at the same level as the melt in the distribution flow table. This continuous ingot casting method is called hot top casting. [0003] Hot-top multi-mode casting is a common casting method for casting small-size round ingots. The main features of the hot-top multi-mode casting process are: the inner wall of the crystallizer is inlaid with graphite rings, the crystallization zone is narrow, the casting speed is fast, and the separation The liquid funnel realizes casting at the same level, so the...
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