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Alloy manufacturing method for aircraft shell

A manufacturing method and aircraft technology, applied in the field of alloys, can solve the problems of high cost of titanium alloy manufacturing and use, cannot be widely promoted, and performance cannot be achieved, and achieve the effects of excellent compactness, strong adaptability, and light weight

Inactive Publication Date: 2017-05-31
ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the alloys used in the manufacture of aircraft shells are generally aluminum alloys or titanium alloys, but because titanium alloys are expensive to manufacture and use, they cannot be widely promoted; although aluminum alloys have moderate manufacturing and use costs, their The performance can not reach the same or similar level as titanium alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of alloy manufacturing method that is used for aircraft casing, concrete manufacturing method comprises the following steps:

[0024] (1) Pretreatment: remove the remaining paint and oxide layer on the surface of the melting tool, preheat to 300°C, spray a layer of protective paint on the surface evenly, and raise the temperature to 400°C, keep it warm for 0.5h, and dry it to turn yellow for later use; Alloy raw materials and fillers are fully dehydrated and dried;

[0025] (2) Alloy liquid smelting: Add the alloy raw materials into the induction furnace, raise the temperature to 1500°C, and keep it warm for 0.5h after it is completely melted; add dry-distilled charcoal, the amount of charcoal added is based on the principle of fully covering the alloy liquid surface, and the temperature is raised to 1650°C, stir evenly, and keep warm for 2 hours;

[0026] (3) Alloy ingot casting: pour the alloy liquid obtained in step (2) into the casting insulation crucible, p...

Embodiment 2

[0033] A kind of alloy manufacturing method that is used for aircraft casing, concrete manufacturing method comprises the following steps:

[0034] (1) Pretreatment: remove the residual paint and oxide layer on the surface of the melting tool, preheat to 380°C, spray a layer of protective paint on the surface evenly, and raise the temperature to 500°C, keep it warm for 1 hour, and dry it to turn yellow for later use; Raw materials and fillers are fully dehydrated and dried;

[0035] (2) Alloy liquid smelting: Add the alloy raw materials into the induction furnace, raise the temperature to 1600°C, and keep it warm for 1 hour after it is completely melted; add dry-distilled charcoal, the amount of charcoal added is based on the principle of fully covering the alloy liquid surface, and the temperature is raised to 1720°C, stir evenly, keep warm for 3h;

[0036](3) Alloy ingot casting: inject the alloy liquid obtained in step (2) into the casting heat preservation crucible, prehe...

Embodiment 3

[0043] A kind of alloy manufacturing method that is used for aircraft casing, concrete manufacturing method comprises the following steps:

[0044] (1) Pretreatment: remove the remaining paint and oxide layer on the surface of the melting tool, preheat to 350°C, spray a layer of protective paint on the surface evenly, and raise the temperature to 450°C, keep it warm for 0.7h, dry and turn yellow for later use; Alloy raw materials and fillers are fully dehydrated and dried;

[0045] (2) Alloy liquid smelting: Add the alloy raw materials into the induction furnace, raise the temperature to 1580°C, and keep it warm for 0.7h after it is completely melted; add dry-distilled charcoal, the amount of charcoal added is based on the principle that the alloy liquid surface is fully covered, and the temperature is raised To 1700°C, stir evenly, keep warm for 2.5h;

[0046] (3) Alloy ingot casting: pour the alloy liquid obtained in step (2) into the casting heat preservation crucible, pre...

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Abstract

The invention provides an alloy manufacturing method for an aircraft shell. The specific manufacturing method comprises the steps of: pretreatment, alloy liquid smelting, alloy ingot casting, alloy ingot remelting, purity improvement and casting formation; and the composition proportions of alloy raw materials are provided. The unique manufacturing method and component proportions are adopted, so that the aircraft shell manufactured by an alloy obtained through the method is excellent in compactness and higher in mechanical performance, meanwhile, is light in mass, can adapt to cold-hot alternation of high / low temperatures, and is higher in adaptability.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular relates to an alloy manufacturing method for aircraft shells. Background technique [0002] With the continuous exploration of the space field, the number and frequency of aircraft launches are also increasing, and the pursuit of aircraft safety and stability is also increasing. At present, the alloys used in the manufacture of aircraft shells are generally aluminum alloys or titanium alloys, but because titanium alloys are expensive to manufacture and use, they cannot be widely promoted; although aluminum alloys have moderate manufacturing and use costs, their Performance can not reach the same or similar level as titanium alloy. [0003] Therefore, in order to solve the above problems, it is an urgent problem for those skilled in the art to develop an alloy used in the manufacture of aviation shells. Contents of the invention [0004] In order to solve the above problems, the inventi...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03
CPCC22C21/00C22C1/026C22C1/03
Inventor 顾金才罗晓芳徐卫明周青春
Owner ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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