Unlock instant, AI-driven research and patent intelligence for your innovation.

NaH-doped high strength aluminium alloy and smelting method thereof

A technology of aluminum alloy melt and aluminum alloy, which is applied in the field of high-strength aluminum alloy, can solve the problems of inability to meet the requirements of mechanical properties, low hardenability of large ingots, poor formability, etc., and shorten the time for dispersion and uniformity , high heat treatability, strength and hardness enhancement effect

Inactive Publication Date: 2012-05-02
GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen that in addition to the poor formability of the current aluminum alloy materials when casting large ingots, the hardenability of large ingots during heat treatment is not high, the tempering resistance is poor, and they cannot meet higher mechanical property requirements. Or some special properties (such as heat resistance, corrosion resistance), etc., are also major defects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-strength aluminum alloy, by mass percentage, including 0.3% Si, 0.1% Fe, 0.1% Cu, 0.1% Mn, 0.05% Cr, 0.35% Mg, 0.15% Zn, 0.1% Ti, 1.0% Na, the balance is Al and unavoidable impurities, the content of each impurity is not more than 0.05% of the total mass percentage, and the content of all impurities is not more than 0.15% of the total mass percentage.

[0031]The present invention also provides a method for smelting the high-strength aluminum alloy, adding NaH in a composite treatment manner, including the following steps:

[0032] Step 1: Prepare materials according to the components of the high-strength aluminum alloy, including 0.3% Si, 0.1% Fe, 0.1% Cu, 0.1% Mn, 0.05% Cr, and 0.35% Mg in the mass percentage of the total product , 0.15% Zn, 0.1% Ti;

[0033] Step 2: Add aluminum ingots or molten aluminum into the smelting furnace first, heat it to melt it completely, add the materials prepared in Step 1 first according to the formula ratio, make it completely...

Embodiment 2

[0036] A high-strength aluminum alloy, by mass percentage, including 0.4% Si, 0.2% Fe, 0.09% Cu, 0.08% Mn, 0.04% Cr, 0.4% Mg, 0.1% Zn, 0.08% Ti, 1.5% Na, the balance is Al and unavoidable impurities, the content of each impurity is not more than 0.05% of the total mass percentage, and the content of all impurities is not more than 0.15% of the total mass percentage.

[0037] The present invention also provides a method for preparing the high-strength aluminum alloy, adding NaH in a composite treatment manner, including the following steps:

[0038] Step 1: Prepare materials according to the components of the high-strength aluminum alloy, including 0.4% of Si, 0.2% of Fe, 0.09% of Cu, 0.08% of Mn, 0.04% of Cr, and 0.4% of Mg in the mass percentage of the total product , 0.1% Zn, 0.08% Ti;

[0039] Step 2: Add aluminum ingots or molten aluminum into the smelting furnace first, heat it to melt it completely, add the materials prepared in Step 1 first according to the formula rat...

Embodiment 3

[0042] A high-strength aluminum alloy, by mass percentage, including 0.6% Si, 0.3% Fe, 0.06% Cu, 0.06% Mn, 0.03% Cr, 0.6% Mg, 0.05% Zn, 0.04% Ti, 2.1% Na, the balance is Al and unavoidable impurities, the content of each impurity is not more than 0.05% of the total mass percentage, and the content of all impurities is not more than 0.15% of the total mass percentage.

[0043] The present invention also provides a method for preparing the high-strength aluminum alloy, adding NaH in a composite treatment manner, including the following steps:

[0044] Step 1: Prepare materials according to the components of the high-strength aluminum alloy, including 0.6% of Si, 0.3% of Fe, 0.06% of Cu, 0.06% of Mn, 0.03% of Cr, and 0.6% of Mg in the mass percentage of the total product , 0.05% Zn, 0.04% Ti;

[0045] Step 2: Add aluminum ingots or molten aluminum into the smelting furnace first, heat it to melt it completely, add the materials prepared in Step 1 first according to the formula r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a NaH-doped high strength aluminium alloy, a smelting method thereof and a casting method. The aluminium alloy and the smelting method have the following beneficial effects: 1.0-2.1% of powdery Na is added to the wrought aluminium alloy, has specific surface areas much bigger than the specific surface areas of the common massive substances in the process of being added tothe aluminium alloy melt in a fluidized form along with the protective gas and can realize rapid dispersion and fully contact with the smelt, thus obviously shortening the dispersion and homogenization time; meanwhile, by adopting the high strength aluminium alloy, the nuclei of heterogeneous nucleation can be effectively added in the alloy solidification process in the casting process, thus achieving the effect of grain refinement and improving the alloy strength; the added elements can promote formation of interstitial atoms and interstitial phases and have high solubility in alpha (Al) solid solution at high temperature and low solubility at room temperature, thus ensuring the alloy to have higher heat-treatable property; and after heat treatment, the hardness and strength of the alloyare improved to a great extent.

Description

technical field [0001] The invention relates to a high-strength aluminum alloy, and also relates to its melting method and casting method. Background technique [0002] Aluminum alloys for deep processing often need to be first cast into large ingots, such as flat ingots, round bars, etc., and then processed into various finished products by means of rolling, extrusion, forging, etc. These processes are basically related to heat treatment. Combined, if the final product can be used directly, it will also go through operations such as segmentation, surface processing, and passivation treatment. These processing methods require that the aluminum alloy material itself has good deep processing performance, including casting performance, pressure processing deformation performance, heat treatment strengthening performance, corrosion resistance performance, fatigue damage resistance performance, surface processing and coating performance, etc. Among them, the melting and casting ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C21/00C22C1/02C22C1/06
Inventor 门三泉车云张中可李祥
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES