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A High Conductivity Heat Resistant Pressure Casting Aluminum Alloy

A casting aluminum alloy, high conductivity technology, applied in the field of preparation of aluminum alloy materials, can solve the problems of high conductivity and high temperature yield strength, etc., and achieve easy melt composition control, good stability, and high conductivity Effect

Active Publication Date: 2022-05-06
SHENZHEN XINSHEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the existing cast aluminum alloy cannot meet the dual requirements of high electrical conductivity and high-temperature yield strength, the present invention designs and invents a pressure-cast aluminum alloy material with high electrical conductivity and higher yield strength at high temperature

Method used

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  • A High Conductivity Heat Resistant Pressure Casting Aluminum Alloy
  • A High Conductivity Heat Resistant Pressure Casting Aluminum Alloy
  • A High Conductivity Heat Resistant Pressure Casting Aluminum Alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1: Ingredients

[0020] Element Specification Mass percentage dosage Industrial pure Al The purity is 99.85%, and the rest are impurity elements 57.7％ Al-Ni10 10.00% Ni, 0.001% impurity elements, the rest is aluminum 38％ Al-Fe10 10.00% Fe, 0.001% impurity elements, the rest is aluminum 3％ Al-Zr10 10.00% Zr, 0.001% impurity elements, the rest is aluminum 1％ Al-Cr10 10.00% Cr, 0.001% impurity elements, the rest is aluminum 0.15％ Al-V10 10.00% V, 0.001% impurity elements, the rest is aluminum 0.15％

[0021] Step 2: Smelting

[0022] Add pure aluminum ingots into the melting furnace, and then raise the temperature by 150°C per hour to 740°C. After the alloy is completely melted, add the Al-Ni10 master alloy and stir for 5 minutes after melting to ensure that the alloy composition is uniform. Then add Al-Fe10, Al-Zr10, Al-Cr10, Al-V10 master alloys, stir for 5 minutes after melting, then add commercial so...

Embodiment 2

[0029] Step 1: Ingredients

[0030]

[0031]

[0032] Step 2: Smelting

[0033] Add pure aluminum ingots into the melting furnace, and then raise the temperature by 150°C per hour to 740°C. After the alloy is completely melted, add the Al-Ni10 master alloy and stir for 5 minutes after melting to ensure that the alloy composition is uniform. Then add Al-Fe10, Al-Zr10, Al-Cr10, Al-V10 master alloys, stir for 5 minutes after melting, then add commercial solid refining agent to the molten aluminum at a ratio of 4 / 1000, and refine at 740-760°C , and degassed with high-purity argon, and slag was removed after standing for 15 minutes.

[0034] Step 3: Die Casting

[0035] The mold is pre-sprayed with release agent and preheated to 180°C, and the temperature of the molten aluminum is controlled within the range of 720°C to 740°C for pressure casting.

[0036] The alloy material obtained through the above steps contains 2.473% of nickel, 0.278% of iron, 0.085% of zirconium, 0....

Embodiment 3

[0040] Step 1: Ingredients

[0041] Element Specification Mass percentage dosage Industrial pure Al The purity is 99.85%, and the rest are impurity elements 77.6％ Al-Ni10 10.00% Ni, 0.001% impurity elements, the rest is aluminum 18％ Al-Fe10 10.00% Fe, 0.001% impurity elements, the rest is aluminum 3％ Al-Zr10 10.00% Zr, 0.001% impurity elements, the rest is aluminum 1％ Al-Cr10 10.00% Cr, 0.001% impurity elements, the rest is aluminum 0.2％ Al-V10 10.00% V, 0.001% impurity elements, the rest is aluminum 0.2％

[0042] Step 2: Smelting

[0043] Add pure aluminum ingots into the melting furnace, and then raise the temperature by 150°C per hour to 740°C. After the alloy is completely melted, add the Al-Ni10 master alloy and stir for 5 minutes after melting to ensure that the alloy composition is uniform. Then add Al-Fe10, Al-Zr10, Al-Cr10, Al-V10 master alloys, stir for 5 minutes after melting, then add commercial soli...

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Abstract

The invention discloses a high-conductivity heat-resistant pressure cast aluminum alloy and a preparation method thereof. The high-conductivity heat-resistant pressure cast aluminum alloy is prepared by pressure casting or squeeze casting technology, and its main components and their mass percentages are: nickel 1.8-3.8%, iron 0.25-0.30%, zirconium 0.006-0.15%, chromium 0.0015% ~0.025%, vanadium 0.001~0.02%, zinc ≤0.01%, titanium ≤0.005%, copper ≤0.02%, silicon ≤0.01%, other unavoidable trace impurity elements ≤0.1%, and the rest is aluminum. In the present invention, by adding and regulating the alloy element Ni, the damage to the electrical conductivity is minimized, and the formation of Al 3 The Ni eutectic phase increases its yield strength; adding trace elements Fe, Zr, Cr, V forms fine and dispersed intermetallic compounds stable at high temperature, and refines the grains to improve the high temperature strength of the alloy to achieve high electrical conductivity and good High-temperature strength, and good casting forming performance, especially suitable for manufacturing parts with lightweight, high electrical conductivity, and certain high-temperature strength requirements, and has very broad application prospects in the fields of automobiles and communications.

Description

technical field [0001] The invention relates to the field of preparation of aluminum alloy materials, in particular to a high-conductivity, high-temperature (>150°C) high-strength pressure-cast aluminum alloy material and a preparation method thereof. Background technique [0002] Aluminum alloy materials have high specific strength, good corrosion resistance, excellent electrical and thermal conductivity, and excellent processing performance, and have been widely used in many fields such as automobiles, aerospace, and machinery manufacturing. Cast aluminum alloys are widely used in the industrial field, usually satisfying one of mechanical strength, corrosion resistance or high electrical / thermal conductivity. However, in some special cases, dual or multiple performance requirements such as strength and electrical conductivity, strength and thermal conductivity will be involved. Deformation and rotational instability caused by insufficient strength. The development of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03B22D17/00B22D18/02
CPCC22C21/00C22C1/026C22C1/03B22D17/00B22D18/02
Inventor 张逸智赵海东长海博文
Owner SHENZHEN XINSHEN NEW MATERIAL TECH CO LTD