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Precise control method for composition of high-strength 2014 aluminum alloy ingots for civil aircraft landing gear hubs

An aluminum alloy casting ingot and landing gear technology, which is applied in the field of precise control of the composition of high-strength 2014 aluminum alloy casting ingots for civil aircraft landing gear hubs, can solve the problems of difficult size control and uniformity of structure and performance.

Active Publication Date: 2021-05-28
SOUTHWEST ALUMINUM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the biggest difficulty of hub die forgings is the difficulty of size control and the difficulty of controlling the uniformity of structure and performance

Method used

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  • Precise control method for composition of high-strength 2014 aluminum alloy ingots for civil aircraft landing gear hubs
  • Precise control method for composition of high-strength 2014 aluminum alloy ingots for civil aircraft landing gear hubs
  • Precise control method for composition of high-strength 2014 aluminum alloy ingots for civil aircraft landing gear hubs

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] Please refer to Figure 3 to Figure 9 , image 3 Statistical chart of sampling components in the radial direction of the ingot; Figure 4It is the 100X tissue picture of the first test piece of the first sample before soaking; Figure 5 It is the 100X tissue picture of the second test piece of the first sample before soaking; Figu...

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Abstract

The invention discloses a precise control method for the composition of high-strength 2014 aluminum alloy casting ingots for civil aircraft landing gear hubs. The furnace charge used is an aluminum ingot with a precision of not less than 99.90%. Electromagnetic stirring for 25-35min; ②Forklift stirring for 3-7min at ordinary times, then electromagnetic stirring for 25-35min; ③Add Mg ingot, when scalding Mg ingot, forklift stirring for 3-7min, then electromagnetic stirring for 25-35min;④ When feeding, stir for 3-7 minutes with a forklift, and then 12-18 minutes with electromagnetic stirring; The casting temperature is 725-745°C, the casting speed is 55-65mm / min, and the water flow rate during casting is 80-90m 3 / h. Can improve product quality.

Description

technical field [0001] The invention relates to the technical field of manufacturing aviation precision hub die forgings, in particular to a method for precisely controlling the composition of high-strength 2014 aluminum alloy ingots for civil aircraft landing gear hubs. Background technique [0002] There is a typical specification forging on a large aircraft, which is the largest forging in the high-strength 2014 aluminum alloy aviation precision hub die forging: half wheel (cabin inner) die forging. The half-wheel (cabin inner side) die forging is a precision die forging, which is a disc type die forging. The maximum outer hub size of the part is φ593.3×309.1mm mm, and the maximum outer contour size of the die forging is φ616.5×314.2mm. [0003] Parts inside the half wheel well such as figure 1 and figure 2 as shown, figure 1 The first side view structural schematic diagram of the 2014 aluminum alloy aviation precision hub die forging provided for the embodiment of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C21/16C22C21/14C22C21/18C22C1/06
CPCC22C1/026C22C1/06C22C21/14C22C21/16C22C21/18
Inventor 李红萍冉红卫孙自鹏汪永红王正安陈丽芳余西
Owner SOUTHWEST ALUMINUM GRP