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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: 2007-09-19
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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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0004] Specific Embodiment 1: In this embodiment, the aluminum alloy pre-stretched 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, and 0.06 parts by weight. Made of Ti, 2.5 parts of Mg, 5.60 parts of Zn and the rest of Al, totaling 100 parts.

specific Embodiment approach 2

[0005] Specific embodiment two: the production method of aviation aluminum alloy pre-stretched plate in this embodiment is realized through 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 to make a total of 100 parts. 2. Melt the mixed metal at 700-750°C for 5-12 hours, then cast 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 in a conventional method according to actual needs Edge, sawing and milling; 4. At a temperature of 370-410°C, hot-roll the ingot according to the actual needs, and cut the length of the wool; 5. Put the straightened wool at 468-472°C. Quenching for 60 to 120 ...

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 machining. The speed is inconsistent, there is a cooling gradient, the surface layer of the plate is subject to additional compressive stress, and the neutral layer is subject to additional tensile stress, resulting in residual stress in the plate, resulting in processing deformation when the plate in the finished state is machined, affecting the quality of the parts The appearance shape and size increase the cost and reduce the processing yield. Contents of the invention [0003] The invention aims to solve the problems that the existing aluminum alloy plates are easily deformed and the processing yield is low after machining. The aluminum alloy pre-stretched sheet for aviation is composed of 0.20 parts of Si, 0.30 parts of Fe, 1.7...

Claims

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Application Information

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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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