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Method for founding aluminium alloy slab ingot

A process method and aluminum alloy technology, applied in the field of aluminum alloy flat ingot melting and casting process, can solve the problems such as the difficulty in guaranteeing the manufacturing quality of aluminum ingots, and the easy cracking of aluminum ingots.

Active Publication Date: 2005-11-09
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum ingots of this shape have the advantages of convenient processing, transportation and storage, so they are very popular with users, but the disadvantages are: the quality of aluminum ingots of this shape is not easy to guarantee, and cracks are easy to appear in the aluminum ingots

Method used

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  • Method for founding aluminium alloy slab ingot

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specific Embodiment approach 1

[0005] Specific implementation mode one: the following combination figure 1 This embodiment will be specifically described. This embodiment is realized by the following steps: 1. Heat the alloy raw material to 740-760°C, stir and remove slag while heating, and control the mass percentage of each element in the alloy to be Si: 0.60-0.8%, Fe: 0.4- 0.7%, Cu: 0.15~0.40%, Mn: 0~0.15%, Mg: 0.8~1.2%, Cr: 0.04~0.35%, Zn: 0~0.25%, Ti: 0~0.15%, other individual impurities≤0.05% %, the total of other impurities ≤ 0.10%, and the rest is Al; 2. Introduce chlorine gas to the bottom of the alloy melt while keeping the temperature of the alloy melt at 700-740°C for 25-35 minutes, then let it stand for 15-25 Minutes; 3. Pouring the alloy melt into one end of the elongated cavity 1-1 of the ingot mold 1, the ingot mold 1 is placed on the sliding platform 2 driven by the hydraulic system 3, and the sliding platform 2 is on the guide rail 4, the ingot mold 1 moves with the sliding platform 2, a...

specific Embodiment approach 2

[0006] Specific embodiment two: the difference between this embodiment and embodiment one is: in step 3, when sliding platform 2 moves distance from 0 to 90 millimeters, the moving speed of sliding platform 2 is 50 millimeters / minute, the moving of sliding platform After the distance is greater than 90 mm, the moving speed becomes 55 mm / min. Such setting makes the initial contact speed of the alloy melt with the ingot mold 1 relatively slow, avoiding the stress of uneven shrinkage in the ingot caused by too fast cooling rate at the beginning, and reducing the occurrence of cracks.

specific Embodiment approach 3

[0007] Specific embodiment three: the difference between this embodiment and embodiment one is: in step one, the alloy raw material is heated to 740°C, stirring and slag removal are carried out while heating, and the mass percentage of each element in the alloy is controlled as Si: 0.60%, Fe: 0.4%, Cu: 0.15%, Mg: 0.8%, Cr: 0.04%, and the rest are Al; in step 2, feed chlorine gas to the bottom of the alloy melt while keeping the temperature of the alloy melt at 700 ℃ for 25 minutes, and then stand for 15 minutes; other steps are the same as Embodiment 1.

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Abstract

A technology for casing flat Al-alloy ingot includes such steps as proportionally mixing Al, Si, Fe, Cu, Mn, Mg, Cr, Zn and Ti, heating to 740-760 deg.C while stirring and skimming, smelting by introducing chlorine gas from the bottom of molten alloy, putting a mould on a platform driven by hydraulic system, and pouring the molten alloy in the moving mould while inserting Al-Ti-B wire in it.

Description

Technical field: [0001] The invention relates to a method for melting and casting aluminum-silicon-magnesium alloy ingots. Background technique: [0002] At present, in order to improve production efficiency, manufacturers of various aluminum alloy ingots often need to increase the production capacity of the production line, and the low-efficiency production lines and production processes are eliminated and replaced by new production lines and production processes, which use 25 tons of oil furnace to smelt The production line of alloy casting 6061 alloy flat ingot is a newly developed production line. The advantage of this production line is high production efficiency. The aluminum ingots produced are flat ingots with a length of 1320 mm, a width of 300 mm and a thickness of about 150 mm. This shape of aluminum ingot has the advantages of convenient processing, transportation and storage, so it is very popular with users, but the disadvantages are: the quality of the alumin...

Claims

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Application Information

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IPC IPC(8): B22D21/04
Inventor 苏堪祥王德满吴欣凤单长智周庆波郝志刚王丽娟王贵福
Owner NORTHEAST LIGHT ALLOY CO LTD
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