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Manufacturing method of 5-series aluminum alloy material

A technology of an aluminum alloy material and a manufacturing method, which is applied to the manufacturing field of 5-series aluminum alloy materials, can solve the problems of poor tensile strength and yield strength, etc., and achieves improvement of tensile strength and yield strength, refinement of crystal grains, and preparation cost. low effect

Pending Publication Date: 2021-01-26
福建祥鑫股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for manufacturing a 5-series aluminum alloy material to solve the problems of poor tensile strength and yield strength in the 5-series aluminum alloy material prepared in the prior art

Method used

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  • Manufacturing method of 5-series aluminum alloy material
  • Manufacturing method of 5-series aluminum alloy material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for manufacturing a 5-series aluminum alloy material, comprising the following steps:

[0039] S1: Put the 5 series aluminum alloy raw materials into the melting furnace according to the ratio and evenly mix them to melt into liquid aluminum alloy. The pressure in the furnace is 0.63MPa, and the liquid aluminum alloy is melted and cast into aluminum alloy round ingots; ultrasonic assistance is used in the aluminum alloy melting process Means, ultrasonic frequency is 0.7MHz, power density is 0.32W / cm 2 ;

[0040] S2: The aluminum alloy round ingot is subjected to secondary homogenization treatment; the homogenization system is 580±3°C×15h+320±4°C×8h, and then cooled to 440±3°C in a natural furnace;

[0041]S3: placing the aluminum alloy round ingot homogenized in step S2 in an extrusion machine for extrusion, the extrusion ratio of the extrusion barrel is 63, wherein the aluminum alloy ingot is heated by a segmented gradient heating method; extrusion The heati...

Embodiment 2

[0046] A method for manufacturing a 5-series aluminum alloy material, comprising the following steps:

[0047] S1: Put the 5 series aluminum alloy raw materials into the melting furnace according to the ratio and evenly mix them to melt into liquid aluminum alloy. The pressure in the furnace is 0.65MPa, and the liquid aluminum alloy is melted and cast into aluminum alloy round ingots; ultrasonic assistance is used in the aluminum alloy melting process Means, ultrasonic frequency is 0.8MHz, power density is 0.33W / cm 2 ;

[0048] S2: The aluminum alloy round ingot is subjected to secondary homogenization treatment; the homogenization system is 580±5°C×15h+320±3°C×8h, and then cooled to 440±2°C in a natural furnace;

[0049] S3: placing the aluminum alloy round ingot homogenized in step S2 in an extrusion machine for extrusion, the extrusion ratio of the extrusion barrel is 68, wherein the aluminum alloy ingot is heated by a segmented gradient heating method; extrusion The heat...

Embodiment 3

[0054] A method for manufacturing a 5-series aluminum alloy material, comprising the following steps:

[0055] S1: Put the 5 series aluminum alloy raw materials into the melting furnace according to the ratio and evenly mix them to melt into liquid aluminum alloy. The pressure in the furnace is 0.71MPa, and the liquid aluminum alloy is melted and cast into aluminum alloy round ingots; ultrasonic assistance is used in the aluminum alloy melting process Means, ultrasonic frequency = 0.9MHz, power density 0.31W / cm 2 ;

[0056] S2: The aluminum alloy round ingot is subjected to secondary homogenization treatment; the homogenization system is 580±3°C×15h+320±5°C×8h, and then cooled to 440±3°C in a natural furnace;

[0057] S3: Place the aluminum alloy round ingot homogenized in step S2 in an extrusion machine for extrusion, the extrusion ratio of the extrusion barrel is 69, wherein the aluminum alloy ingot is heated by a segmented gradient heating method; extrusion The heating te...

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Abstract

The invention discloses a manufacturing method of a 5-series aluminum alloy material, and belongs to the technical field of aluminum alloys. The 5-series aluminum alloy material is prepared through the steps of smelting, secondary homogenizing treatment, extrusion, air cooling treatment, stretching straightening, aging heat treatment and the like. The tensile strength of the 5-series aluminum alloy material prepared by the manufacturing method reaches 482.6 MPa or above, the yield strength reaches 349.8 MPa or above, the ductility reaches 14.9% or above, the tensile strength, the yield strength and the ductility of the 5-series aluminum alloy material are remarkably superior to those of a 5-series aluminum alloy material prepared in the prior art, and meanwhile, the comprehensive properties including fatigue strength, wear resistance, corrosion resistance and the like are also remarkably superior to those in the prior art; and the 5-series aluminum alloy material is low in preparationcost and can be widely applied to the field of aluminum alloy profiles for high-speed rails, automobiles and ships and warships.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy preparation, and in particular relates to a method for manufacturing a 5-series aluminum alloy material. Background technique [0002] In the field of aluminum alloy profiles for high-speed rail, automobiles and ships, the type of aluminum alloy is generally 5 series aluminum alloys, because the use environment in the ocean is a highly corrosive environment, and the corrosion resistance of alloy profiles is strictly required. However, the Mg content in the 5-series aluminum alloy is relatively high, which will cause the forgeability of the 5-series alloy to be significantly lower than that of other series of aluminum alloys, such as the 2-series and 6-series. [0003] Chinese patent application document "A High Magnesium 5 Series Aluminum Alloy Box Die Forging Method (Application Publication No.: CN111545695A)" discloses a high magnesium 5 series aluminum alloy box die forging method, the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22F1/047B21C37/00
CPCB21C37/00C22C1/026C22C21/08C22F1/047
Inventor 黄铁兴黄祯荣张建雷刘金霞李桂芝
Owner 福建祥鑫股份有限公司