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Aviation aluminum alloy pre-stretching plate and production method thereof

A production method and pre-stretching technology are applied in the field of aluminum alloy pre-stretched sheet and its production, which can solve the problems of deformation processing yield of aluminum alloy sheet and other problems.

Inactive Publication Date: 2009-04-29
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 problems that existing aluminum alloy plates are easily deformed and the processing yield is low after machining

Method used

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Experimental program
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specific Embodiment approach 1

[0004] Embodiment 1: In this embodiment, the pre-stretched aluminum alloy sheet for aviation is composed of 0.20 parts of Si, 0.30 parts of Fe, 1.7 parts of Cu, 0.10 parts of Mn, 0.22 parts of Cr, 0.06 parts of Cr, and 0.06 parts by weight. 100 parts of Ti, 2.5 parts of Mg, 5.60 parts of Zn, and the balance of Al.

specific Embodiment approach 2

[0005] Specific embodiment 2: The production method of the aluminum alloy pre-stretched sheet for aviation in this embodiment is realized by the following steps: 1. According to the ratio of parts by weight, 0.20 parts of Si, 0.30 parts of Fe, 1.7 parts of Cu, 0.10 parts of Mn, 0.22 parts of Cr, 0.06 parts of Ti, 2.5 parts of Mg, 5.60 parts of Zn, and the balance of Al were mixed, for a total of 100 parts. 2. Smelting the mixed metal at 700-750°C for 5-12 hours, then casting the smelted metal at a temperature of 690-705°C and a casting speed of 55-60mm / min, and Cast the metal into an ingot with a cross-sectional size of 300×1200mm; 3. Soak the ingot at a temperature of 450-460°C for 40-42 hours, and then plan the soaked ingot by conventional methods according to actual needs Edge, sawing and milling; 4. Under the temperature of 370~410℃, hot-roll the ingot according to actual needs to control the thickness of the wool, and cut the length of the wool; Quenching is carried out ...

specific Embodiment approach 3

[0006] Embodiment 3: The difference between this embodiment and Embodiment 2 is that in step 2, the mixed metals are smelted at 710-740° C. for 6-10 hours. Other steps are the same as in the second embodiment.

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Abstract

The invention relates to aluminium alloy pretensioning plates for aviation and a method for producing the same in order to solve the problem that the existing aluminium alloy plates are easy to be deformed in the machining and machining yield is low. The aliminium alloy pretensioning plates for aviation comprise, based on weight shares, Si of 0.20, Fe of 0.3, Cu of 1.7, Mn of 0.10, Cr of 0.22, Ti of 0.06, Mg of 2.5, Zn of 5.6, and the residuel of Al, the total of 100. The method for producing the aliminium alloy pretensioning plates for aviation includes the steps of : 1) admixture; 2) casting; 3) soak heating treat; 4) heating, hor rolling and cutting; 5) quenching, straightening; 6) pretensioning, ageing, sawing the plates according to the requirement of the product to produce aliminium alloy pretensioning plates for aviation. The plates product of the invention is steady without deforming in machining.

Description

technical field [0001] The invention relates to an aluminum alloy pre-stretched plate and a production method thereof. Background technique [0002] The aluminum alloy sheet for aviation requires that the deformation of the sheet is low after the sheet is machined. However, when the existing aluminum alloy sheet is subjected to quenching and heat treatment, the surface layer of the sheet and the central layer of the sheet are cooled during the rapid cooling process of quenching. The speed is inconsistent, there is a cooling gradient, the surface layer of the plate is subjected to additional compressive stress, and the neutral layer is subjected to additional tensile stress, which causes the plate to generate residual stress, resulting in machining deformation of the finished plate when it is machined, which affects the parts. The appearance shape and size increase the cost and reduce the processing yield. SUMMARY OF THE INVENTION [0003] The invention aims to solve the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/02B22D21/04B21B37/74C22F1/053
Inventor 赵永军谢延翠王学书马英义陶志民
Owner NORTHEAST LIGHT ALLOY CO LTD
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