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Preparation process of high-strength and high-plasticity 6061 and 6063 aluminum alloy and sectional material thereof

A technology of aluminum alloy profiles and aluminum alloys, which is applied in the field of non-ferrous metal processing, can solve problems such as unstable and reliable manufacturing, and achieve the effects of good consistency, stable product quality, and good reproducibility

Inactive Publication Date: 2010-04-14
江阴裕华铝业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technology is not yet able to manufacture such products stably and reliably

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0015] Using the method of the present invention to produce ultra-fine-grained 6061 aluminum alloy rods, the process flow is: adding Al-Si master alloy to the original aluminum liquid → adding Fe additive → adding Cr additive → adding Cu additive → adding Mn additive → adding Mg Additives→stirring→slagging agent into the furnace→stirring→slag removal→intermediate analysis→transfer to holding furnace→stirring slag removal→intermediate analysis→standstill→add Al-5Ti-0.5C-Re grain refiner 0.30%→ Continuous casting into φ180mm round bar → homogenization → sawing and blanking → aluminum rod heating → profile extrusion (T6) → stretching → lengthening.

[0016] After inspection, the measured value of the number of grains per unit area of ​​the aluminum rod is 60 / mm 2 ~90pcs / mm 2 Grain size rating (according to ASTWll2-S1 American National Standard "Standard Method for Determination of Metal Average Grain Size" rating): the longitudinal and transverse grain sizes of the ingot are bas...

Embodiment 2

[0018] Using the method of the present invention to produce ultra-fine-grained 6063 aluminum alloy rods, the process flow is: adding Al-Si master alloy to the original aluminum liquid → adding Fe additives → adding Mg additives → stirring → slagging agent into the furnace → stirring → Slag removal→intermediate analysis→transfer to holding furnace→stirring slag removal→intermediate analysis→standstill→add Al-5Ti-0.75C-Re grain refiner 0.20%→continuous casting into φ180mm round bar→homogenization→sawing Cutting and blanking → aluminum rod heating → profile extrusion (T5) → stretching → cutting to length.

[0019] After inspection, the measured value of the number of grains per unit area of ​​the aluminum rod is 55 pieces / mm 2 ~85pcs / mm 2 Grain size rating (according to ASTWll2-S1 American National Standard "Standard Method for Determination of Metal Average Grain Size" rating): the longitudinal and transverse grain sizes of the ingot are basically the same, all are equiaxed gra...

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Abstract

The invention provides a preparation process of high-strength and high-plasticity 6061 and 6063 aluminum alloy and sectional material thereof. The preparation process is realized by adding a proper amount of Al-Ti-C-Re grain refiner in an aluminum alloy melting process, wherein the characteristic components of the grain refiner comprise 0.01-10 percent of Re (mixed Re taking Ce as a main component), 0.1-3.5 percent of Ti and 0.1-3.5 percent of C; preparing an aluminum alloy rod with superfine crystal grains; and homogenizing and extruding to form the aluminum alloy sectional material with certain high strength and high plasticity. The invention can be applied to manufacturing other series of aluminum alloys with high strength and high plasticity.

Description

1. Technical field [0001] The invention relates to a high-strength and high-plasticity 6061 and 6063 aluminum alloy and the technology for preparing the profiles thereof, belonging to the technical field of nonferrous metal processing. 2. Background technology [0002] Aluminum and aluminum alloys have the advantages of small specific gravity, good thermal conductivity, easy forming, and low price. They have been widely used in aerospace, transportation, light industrial building materials, electric power and electronic industries, machinery manufacturing, and petrochemical industries. The amount of aluminum used in people's daily life is large, and its scope is second only to steel, becoming the second largest metal material. [0003] According to the composition, structure and process characteristics of aluminum alloy, it can be divided into two categories: cast aluminum alloy and deformed aluminum alloy. Deformed aluminum alloy is made of aluminum alloy ingot through pre...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22F1/04
Inventor 陈洪冰徐丹倪斌
Owner 江阴裕华铝业有限公司
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