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Novel composite aluminium alloy plates and prepn. method

A technology of aluminum alloy plate and aluminum alloy plate, applied in the direction of chemical instruments and methods, metal layered products, layered products, etc., can solve the problems of low yield, low mechanical properties, oil stains, sticking, etc., and achieve high yield Improvement, stable production process and good mechanical properties

Active Publication Date: 2006-09-20
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the existing defects of low mechanical properties, low yield, unstable production process, inability to determine a reasonable cold working rate, and surface quality problems such as oil stains and sticking on the surface of the existing multilayer composite aluminum alloy sheet. And provide a kind of novel composite aluminum alloy sheet material and preparation method thereof

Method used

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Examples

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specific Embodiment approach 1

[0005] Specific Embodiment 1: In this embodiment, the new composite aluminum alloy sheet is made of three-layer aluminum alloy sheets whose cross-sections are transversely parallel to each other, and the upper cladding layer and the lower cladding layer located at the upper and lower ends are both 9.40-10.00% by weight Silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20-1.80% magnesium, 0.20% zinc, and the balance is made of aluminum alloy; located in the upper cladding layer and the lower cladding layer The core layer in between is made of aluminum alloy with 0.40% silicon, 0.40-0.60% iron, 0.07-0.15% copper, 1.1-1.3% manganese, 0.02-0.03% titanium, and the balance is aluminum. The thickness ratio of the three-layer aluminum alloy sheet is 1:2.5 to 13:1 from top to bottom.

specific Embodiment approach 2

[0006] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the thickness ratio of the three-layer aluminum alloy plate is 1:4 to 9:1 from top to bottom. Others are the same as the first embodiment.

specific Embodiment approach 3

[0007] Specific Embodiment Three: This embodiment prepares the novel composite aluminum alloy plate according to the following steps: (1) by weight percentage, it will be composed of 9.40-10.00% silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20 ~1.80% magnesium, 0.20% zinc, the balance is the upper cladding layer and the lower cladding layer aluminum alloy ingot made of aluminum and by weight percentage by 0.40% silicon, 0.40~0.60% iron, 0.07~ The core aluminum alloy ingot made of 0.15% copper, 1.1-1.3% manganese, 0.02-0.03% titanium, and the balance aluminum is smelted at 690-800°C respectively; Cast slabs with the same cross-sectional size at 750°C; (3) Heat the cast slabs used to make the upper cladding layer and the lower cladding layer at 500±10°C for 6-8 hours, and then heat them at 410-450°C Under the condition of ℃, the upper cladding aluminum alloy plate and the lower cladding aluminum alloy plate with a thickness of 45 ~ 55 mm are rolled; (4) the upper and low...

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Abstract

This invention discloses a method for manufacturing a new type of aluminum alloy composite sheets, and solves the problems of low mechanical properties and low yield existing with present aluminum alloy composite sheets. The sheets are composed of three parallel sheets. The top and the bottom sheets are composed of Si 9.4-10 wt.%, Fe 0.4 wt.%, Cu 0.2 wt.%, Mn 0.1 wt.%, Mg 1.2-1.8 wt.%, Zn 0.2 wt.% and Al as balance. The middle sheet is composed of Si 0.4 wt.%, Fe 0.4-0.6 wt.%, Cu 0.07-0.15 wt.%, Mn 1.1-1.3 wt.%, Ti 0.02-0.03 wt.% and Al as balance. The thickness ratio of the three sheets from top to bottom is 1:2.5~13:1. The sheets are manufactured by: smelting the three alloy ingots, casting into sheets, heating and rolling the top and the bottom sheets, chemically washing and welding, hot-rolling, cold-rolling and annealing the intermediate products to obtain the final products. The aluminum alloy composite sheets have good mechanical properties, and the yield of the final products is increased by more than 15%.

Description

technical field [0001] The invention relates to a composite alloy plate and a preparation method thereof, in particular to a multilayer composite alloy plate and a preparation method thereof. Background technique [0002] The existing multi-layer composite aluminum alloy sheet has a broad market space, but its mechanical properties are low, the yield is low, the production process is unstable, there are surface quality problems such as oil stains and sticking on the surface of the sheet, and it is impossible to determine a reasonable cold processing rate. As a result, the multilayer composite aluminum alloy sheet cannot be widely used. Contents of the invention [0003] The purpose of the present invention is to solve the existing defects of low mechanical properties, low yield, unstable production process, inability to determine a reasonable cold working rate, and surface quality problems such as oil stains and sticking on the surface of the existing multilayer composite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00B32B15/01
Inventor 师雪飞于莉莉马英义曹永亮
Owner NORTHEAST LIGHT ALLOY CO LTD
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