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Aluminum alloy material with excellent surface stability and method for manufacturing the same

An aluminum alloy material and stability technology, which is applied in metal material coating process, superimposed layer plating, coating, etc., can solve the problems of excellent surface stability and inability to obtain surface characteristics over time, and achieve surface stability Excellent performance, reduced maintenance frequency, and good water wettability

Active Publication Date: 2009-06-03
KOBE STEEL LTD
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Problems solved by technology

However, merely protecting the surface by applying anti-rust oil within 14 days after surface conditioning cannot provide an aluminum alloy plate with less change in surface characteristics over time and excellent surface stability

Method used

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  • Aluminum alloy material with excellent surface stability and method for manufacturing the same
  • Aluminum alloy material with excellent surface stability and method for manufacturing the same
  • Aluminum alloy material with excellent surface stability and method for manufacturing the same

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Embodiment

[0055] Examples of the present invention are described below. A 6022-standard aluminum alloy cold-rolled plate (thickness 1mm) of the 6000 series, a test piece with a length of 70 mm and a width of 150 mm was used. This 6022 aluminum alloy plate contains Mg: 0.55%, Si: 0.95%, and 0.2% has a resistance of 230MPa.

[0056] When performing pretreatment before phosphate treatment, immerse in a commercially available weakly alkaline degreasing solution at 60 to 90°C for 1 to 10 seconds or after spraying, then immerse in 1 to 20 mass% nitric acid or sulfuric acid at 50 to 90°C for 1 ~10 seconds or spray, then rinse with water.

[0057] By adopting the above pretreatment conditions, the aluminum oxide film or magnesium already formed on the surface of the test piece can be removed. However, since an aluminum oxide film is rapidly formed on the surface of the test piece, the hydrated phosphate attached to the surface of the test piece by the hydrogen phosphate treatment exists or is...

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Abstract

The aim of the present invention is to provide an aluminum alloy material with excellent surface stability and a method for manufacturing the same. The material not only maintain the effect of a profiling oil containing ester component until degreasing of a chemical conversion treatment, but also maintain excellent water wattability of the chemical conversion treatment. In the invention, ester-containing profiling oil is coated on the surface of a material having Mg alumium alloy of hydration phosphate or hydration hydrophosphate containing phosphor concentration more than 2.0 atom %.

Description

technical field [0001] The present invention relates to an aluminum alloy material with excellent surface stability and a preparation method thereof. The aluminum alloy material with excellent surface stability is suitable for automobiles, especially for automobile panels; In addition to the effect of press oil, it can maintain good water wettability during chemical conversion treatment. The aluminum alloy material in the present invention refers to an aluminum alloy prepared by various preparation methods such as rolled plate, rolled foil, extruded profile, forged material, and cast material. Background technique [0002] As we all know, various aluminum alloy materials (hereinafter also referred to as Al) have been widely used in transport aircraft, machines, electrical appliances, buildings, structures, automobiles, ships, airplanes or vehicles according to the characteristics of each alloy. Optical instruments, components or parts of utensils. [0003] In recent years,...

Claims

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Application Information

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IPC IPC(8): C23C28/04C23C22/07
CPCC22C21/02C22C21/06C23C22/07C23C22/78C23C22/82C23C26/00C23C28/00
Inventor 大胁武史小林宣裕
Owner KOBE STEEL LTD
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