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Aluminum alloy semi-ring for fairing of launch vehicle and preparation method thereof

A technology for launch vehicles and aluminum alloys, which is used in metal extrusion control equipment, metal processing equipment, metal extrusion, etc. The effect of processing plasticity and reducing dimensional deformation

Active Publication Date: 2010-06-30
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the existing aluminum alloy half rings for fairings have low strength and cannot meet the application requirements of large launch vehicles, and provide aluminum alloy half rings for launch vehicle fairings and a preparation method thereof

Method used

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  • Aluminum alloy semi-ring for fairing of launch vehicle and preparation method thereof

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Experimental program
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specific Embodiment approach 1

[0012] Embodiment 1: The aluminum alloy half ring for the launch vehicle fairing of the present embodiment is composed of 0.6% to 1.2% of Si, 0.1% to 0.7% of Fe, 3.9% to 4.8% of Cu, and 0.4% to 1.0% by mass percentage. % of Mn, 0.4% to 0.8% of Mg, 0.05% to 0.1% of Ni, 0.1% to 0.3% of Zn, 0.1% to 0.15% of Ti and 90.95% to 94.35% of Al.

[0013] The tensile strength of aluminum alloy half rings for launch vehicle fairings is 380MPa~450MPa, the elongation after fracture is 6.0%~10%, and the Brinell hardness (HB) is 110N / mm 2 ~150N / mm 2 , which can meet the strength requirements of large launch vehicles.

specific Embodiment approach 2

[0014] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the aluminum alloy half ring for the launch vehicle fairing consists of 0.8% to 1.1% Si, 0.2% to 0.6% Fe, 4.0% to 4.6% by mass percentage % Cu, 0.5% to 0.9% of Mn, 0.5% to 0.7% of Mg, 0.06% to 0.08% of Ni, 0.15% to 0.25% of Zn, 0.11% to 0.14% of Ti and 91.63% to 93.68% of Al made.

specific Embodiment approach 3

[0015] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the aluminum alloy half ring for the launch vehicle fairing consists of 1.0% Si, 0.4% Fe, 4.3% Cu, and 0.7% Made of Mn, 0.6% Mg, 0.07% Ni, 0.20% Zn, 0.13% Ti and 92.60% Al.

[0016] The tensile strength of the aluminum alloy half ring for the launch vehicle fairing of this embodiment is 402MPa, the elongation after fracture is 6.5%, and the Brinell hardness (HB) is 140N / mm 2 , which can meet the strength requirements of large launch vehicles.

[0017] Specific embodiment three: the preparation method of the aluminum alloy half-ring for the launch vehicle fairing of the present embodiment is carried out according to the following steps: 1. According to the mass percentage Si of elements in the aluminum alloy half-ring for the launch vehicle fairing: 0.6%~1.2% , Fe: 0.1%~0.7%, Cu: 3.9%~4.8%, Mn: 0.4%~1.0%, Mg: 0.4%~0.8%, Ni: 0.05%~0.1%, Zn: 0.1%~0.3%, Ti Al: 0.1%...

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Abstract

The invention discloses an aluminum alloy semi-ring for a fairing of a launch vehicle and a preparation method thereof, relating to an alloy semi-ring and a preparation method thereof. The invention solves a problem that the traditional aluminum alloy semi-ring for the fairing of the launch vehicle has a low intensity and cannot satisfy the application requirements of large-scale launch vehicles. The aluminum alloy semi-ring for a fairing of a launch vehicle is made of Si, Fe, Cu, Mn, Mg, Ni, Zn, Ti and Al. The tensile strength of the semi-ring is 380-450MPa, the percentage elongation after fracture is 6.0-10% and the Brinell hardness is 110N / sq.m-150N / sq.m. The preparation method comprises the following steps of: preparing the raw material, melting, casting, homogenizing annealing, forging, extruding, bending, quenching, coldly compressing to deform, flattening and ageing the raw materials to obtain the aluminum alloy semi-ring for the fairing of the launch vehicle. The aluminum alloy semi-ring for the fairing of the launch vehicle has a high intensity and can be applied to the large-scale launch vehicle.

Description

technical field [0001] The invention relates to an alloy half ring and a preparation method thereof. Background technique [0002] Aluminum alloy has the characteristics of light weight, small specific gravity and high strength, and has been widely used in various fields. Aluminum alloy half-rings for fairings are important parts of launch vehicles. The existing aluminum alloy half-rings for fairings use the mast bending technology to bend the profile mast into two semicircular half-rings, and then use the half-rings Explosive bolt connection, with the large-scale launch vehicle, various test equipment on the rocket increases, the payload increases, and to simulate the manned, it is necessary to accurately separate the escape cabin, the strength of the existing aluminum alloy half ring for the fairing has been reduced. It cannot meet the application requirements of large launch vehicles. Contents of the invention [0003] The invention aims to solve the problem that the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/18B23P15/00B21C31/00B21J1/06B21J5/06B21J5/08C22C1/03C22F1/057
Inventor 张宏伟邹京滨孙绍华
Owner NORTHEAST LIGHT ALLOY CO LTD
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