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A kind of preparation method of air cargo ultra-wide aluminum alloy sheet

A technology for aluminum alloy and aluminum alloy ingots, applied in the field of alloy materials, can solve the problems of increased production processes, long production cycle, reduced surface quality, etc., and achieve the effects of reduced preparation processes, improved production efficiency, and high dimensional accuracy

Active Publication Date: 2018-08-31
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when using small-sized hard aluminum alloy slabs to produce ultra-wide aluminum alloy sheets, the production efficiency is low, the width is insufficient, the production of ultra-wide sheets is limited, and the yield is also low
When the salt bath is used as the solid solution treatment equipment, after the solid solution of the plate is completed in the salt bath, it needs to be lifted out and put into the water tank for quenching, that is, the transfer time from solid solution to quenching is difficult to control, resulting in insufficient solid solution or The stability of solid solution quenching is poor; before the plate is solidified, it needs to be put into the material frame, and after quenching, it needs to be taken out of the material frame, which will easily cause scratches on the surface of the plate and reduce the surface quality, which will inevitably affect personnel. Quality and proficiency put forward high requirements
At the same time, using a salt bath to heat the alloy makes it difficult to control the surface quality and poor stability. Quenching by immersing in water will easily lead to uneven cooling of the aluminum alloy sheet and poor unevenness of the sheet. To improve the plate shape, but the production process increases and the production cycle is longer

Method used

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  • A kind of preparation method of air cargo ultra-wide aluminum alloy sheet

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preparation example Construction

[0026] A kind of preparation method of air cargo ultra-wide aluminum alloy thin plate, its technological process is as follows figure 1 shown, including the following steps:

[0027] S1: Preheat the aluminum alloy ingot at 460-480°C for 5-15 hours. The target composition of the aluminum alloy ingot includes the following raw materials in weight percentage: Si≤0.50, Fe≤0.50, Cu 0.10-2.25, Mn≤0.30, Mg 1.0-2.9, Cr0.01-0.28, Zn 5.0-6.1, Ti 0.001-0.20, Zr≤0.18, the balance is Al and unavoidable impurities. The specification of the aluminum alloy ingot is 590mm in thickness and 1600mm in width.

[0028] S2: rolling the aluminum alloy ingot obtained in step S1 to obtain a coil. When rolling, the aluminum alloy ingot is first rolled horizontally to 1700~2900mm, with a width of 100~1300mm, then longitudinally rolled to a thickness of 0.8~4.0mm, and trimmed to 80~100mm. The cross rolling is divided into 5~18 passes, the reduction in each pass is 4%~18%, and the rolling speed is 1.2~...

Embodiment 1

[0035] When producing hard aluminum alloy plates with a thickness of 0.8mm, a width of 2700mm, and a length of 3000mm, the process is as follows:

[0036] Select an aluminum alloy slab that meets the composition requirements, and the target composition of the aluminum alloy slab includes the following raw materials in weight percentage: Si≤0.50, Fe≤0.50, Cu 0.10-2.25, Mn≤0.30, Mg 1.0-2.9, Cr 0.01-0.28, Zn5.0-6.1, Ti 0.001-0.20, Zr≤0.18, the balance is Al and unavoidable impurities. After the aluminum alloy slab is preheated at 460°C / 15h, it is first cross-rolled, and the cross-rolling is divided into 18 passes, the reduction of each pass is 4%~18%, and the rolling speed is 1.2m / s , when rolling, the width reaches 1300mm, the width reaches 2900mm, the longitudinal rolling reaches the thickness of the finished product 0.8mm, the edge trimming is 100mm, and the width is 2800mm.

[0037] After recoil cleaning and edge trimming of 40mm, the coiled material enters the air cushion t...

Embodiment 2

[0042] When producing hard aluminum alloy plates with a thickness of 4mm, a width of 1500mm and a length of 3500mm, the process is as follows:

[0043] Select an aluminum alloy slab that meets the composition requirements, and the target composition of the aluminum alloy slab includes the following raw materials in weight percentage: Si≤0.50, Fe≤0.50, Cu 1.0-2.0, Mn≤0.30, Mg 1.5-2.5, Cr 0.10-0.20, Zn5.5-6.0, Ti 0.005-0.15, Zr≤0.18, the balance is Al and unavoidable impurities. After the aluminum alloy slab is preheated at 480°C / 5h, it is first cross-rolled, and the cross-rolling is divided into 5 passes, the reduction of each pass is 4%~10%, and the rolling speed is 1.6m / s , the width during rolling is 200mm, and the width is 1700mm, and then longitudinally rolled to a finished coil with a thickness of 4mm, trimming 100mm, and a width of 1600mm.

[0044] After recoil cleaning and edge trimming of 60mm, the coiled material enters the air cushion type continuous heat treatment un...

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Abstract

The invention discloses a manufacturing method for an ultra-wide aluminum alloy thin plate for air freight. The manufacturing method comprises the following steps of: (1) preheating; (2) rolling; (3) re-coiling and trimming; (4) solid-solution quenching and stretching-stretching; (5) cross-cutting and coiling; (6) artificial aging; and (7) detecting and packaging. The manufacturing method disclosed by the invention is fewer in processes, is short in production period, is lower in cost, is higher in yield and is higher in production efficiency; and the produced plate is low in residual stress, is high in dimension precision and is relatively good in surface quality, and meets the use requirements of relatively low unevenness of the aluminum alloy thin plate for air freight.

Description

technical field [0001] The invention belongs to the field of alloy materials, and relates to a preparation method of an aluminum alloy thin plate, in particular to a preparation method of an air freight ultra-wide aluminum alloy thin plate. Background technique [0002] As a deformed aluminum alloy, Al-Zn-Mg-Cu alloy has high specific strength and good corrosion resistance, and can be processed into structural materials of various shapes and specifications. Aluminum alloy sheets with a thickness of 0.8~4.0mm can be used to manufacture air cargo Structural parts such as the box plate, bottom plate and pallet of the ULD. After ingot casting and soaking are completed, the subsequent typical production process is as follows: preheating rolling open book charge solid solution in salt bath Quenching Straightening once artificial aging secondary straightening Sawing Package Storage Ship. [0003] At present, when using small-sized hard aluminum alloy slabs ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/053C22C21/10B23P15/00
CPCB23P15/00C22C21/10C22F1/053
Inventor 张江斌何克准李承波张航韦修勋黄淑萍王华春
Owner 广西南南铝加工有限公司
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