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High-strength aluminum alloy prepainted sheet strip for vertical lockrand roof tiles and production method thereof

A technology of standing seam and production method, which is applied in the field of aluminum alloy manufacturing, can solve the problems of complex production process, limited material characteristics, high production cost, etc., and achieve the effect of improving corrosion resistance, unique alloy composition, and improving strength

Active Publication Date: 2014-04-30
ALUHOUSE TECHGD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process of this method is complicated, the production cost is high, and limited by the material characteristics, its yield strength is generally lower than 170MPa, and the thickness needs to be increased under the same use conditions

Method used

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  • High-strength aluminum alloy prepainted sheet strip for vertical lockrand roof tiles and production method thereof
  • High-strength aluminum alloy prepainted sheet strip for vertical lockrand roof tiles and production method thereof
  • High-strength aluminum alloy prepainted sheet strip for vertical lockrand roof tiles and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The production method of the high-strength aluminum alloy color-coated plate strip (AA02 alloy color aluminum plate) for standing seam roof tiles described in this embodiment, the production process includes: melting and casting → sawing → milling → heating → hot continuous rolling → cold Continuous rolling→finished product annealing→edge trimming and leveling→coating.

[0025] The specific process parameters are as follows:

[0026] (1) Melting and casting: the mass percentage of the chemical composition of the ingot after melting and casting is (other impurity elements individually ≤0.05%, such as Zn, and the total of other impurity elements ≤0.15%):

[0027] Si

Fe

Cu

mn

Mg

Ti

Cr

Zn

Al

0.16%

0.35%

0.11%

0.55%

2.40%

0.02%

0.06%

0.02%

margin

[0028] The melting temperature is 730-750°C, the refining temperature is 740-750°C, the casting temperature is 680-695°C, and the casting spee...

Embodiment 2

[0038] The production method of the high-strength aluminum alloy color-coated plate strip (AA02 alloy color aluminum plate) for standing seam roof tiles described in this embodiment, the production process includes: melting and casting → sawing → milling → heating → hot continuous rolling → cold Continuous rolling→finished product annealing→edge trimming and leveling→coating.

[0039] The specific process parameters are as follows:

[0040] (1) Melting and casting: the mass percentage of the chemical composition of the ingot after melting and casting is (single ≤0.05% of other impurity elements, ≤0.15% of other impurity elements in total):

[0041] Si

Fe

Cu

mn

Mg

Ti

Cr

Zn

Al

0.12%

0.35%

0.07%

0.45%

2.56%

0.02%

0.05%

0.02%

margin

[0042] The melting temperature is 725-740°C, the refining temperature is 735-745°C, the casting temperature is 680-700°C, and the casting speed is 55mm / min;

[0...

Embodiment 3

[0053] The production method of the high-strength aluminum alloy color-coated plate strip (AA02 alloy color aluminum plate) for standing seam roof tiles described in this embodiment, the production process includes: melting and casting → sawing → milling → heating → hot continuous rolling → cold Continuous rolling→finished product annealing→edge trimming and leveling→coating.

[0054] The specific process parameters are as follows:

[0055] (1) Melting and casting: the mass percentage of the chemical composition of the ingot after melting and casting is (single ≤0.05% of other impurity elements, ≤0.15% of other impurity elements in total):

[0056] Si

Fe

Cu

mn

Mg

Ti

Cr

Zn

Al

0.09%

0.31%

0.13%

0.42%

2.73%

0.02%

0.05%

0.02%

margin

[0057] The melting temperature is 730-745°C, the refining temperature is 740-750°C, the casting temperature is 682-695°C, and the casting speed is 65mm / min;

[0...

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Abstract

The invention discloses a high-strength aluminum alloy prepainted sheet strip (AA02 alloy prepainted aluminum sheet) for vertical lockrand roof tiles and production method thereof. The production process comprises the following steps: fusion casting, sawing, face milling, heating, hot continuous rolling, cold continuous rolling, finished product annealing, trimming, flattening and coating. The cast ingot after fusion casting comprises the following chemical components in percentage by mass: at most 0.2% of Si, at most 0.40% of Fe, 0.05-0.15% of Cu, 0.40-0.60% of Mn, 2.3-3.0% of Mg, at most 0.20% of Cr, 0.01-0.04% of Ti, at most 0.15% of other impurity elements (at most 0.05% for each impurity element) and the balance of Al. The aluminum alloy prepainted sheet strip has the advantages of high strength, favorable plasticity, short production process and low cost.

Description

technical field [0001] The invention relates to the field of aluminum alloy manufacturing, in particular to a high-strength aluminum alloy color-coated sheet strip for standing seam roof tiles and a production method thereof. Background technique [0002] Standing seam roof tiles and strips used in factories, public facilities and other buildings not only require excellent corrosion resistance and wind pressure resistance, but also require good plasticity. Q235 steel and 3XXX aluminum alloy are the current standing seam Roof tile color-coated sheet and strip are widely used materials. Q235 steel has high strength and plasticity, but the corrosion resistance of steel is poor, especially in the atmosphere containing a large amount of SO 2 1. In the environment with strong rainwater and acidity, steel roof tiles need to be scrapped within 5-8 years; 3XXX alloy has excellent corrosion resistance, but the alloy has low strength, poor wind pressure resistance, general bending per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22F1/047
Inventor 司开田黄文辉李群王英武黎亮李凤娇张开健
Owner ALUHOUSE TECHGD CO LTD
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