Heat-resisting cast aluminum alloy with high elongation and pressure casting preparation method thereof

A technology of casting aluminum alloy and high elongation rate, which is applied in the field of high elongation heat-resistant casting aluminum alloy and its pressure casting preparation, can solve the problems of elongation rate, insufficient heat resistance, application restrictions, etc., and achieve improved recycling rate, The effect of reducing inclusion requirements, improving mechanical properties and corrosion resistance

Active Publication Date: 2019-07-19
NINGBO HELI TECH CO LTD +1
View PDF9 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the industrial problem that the existing A380 and other die-casting aluminum alloys have insufficient elongation and heat resistance, which greatly restricts their application, the present invention provides a high-elongation and heat-resistant cast aluminum alloy and its Preparation

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat-resisting cast aluminum alloy with high elongation and pressure casting preparation method thereof
  • Heat-resisting cast aluminum alloy with high elongation and pressure casting preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The weight percent of a high-elongation heat-resistant cast aluminum alloy is: according to the theoretical ratio, 9.0% Si, 0.05% Cu, 0.05% Mg, 0.05% Sc, 0.3% Zr, the balance is Al and unavoidable impurities Fe .

[0039] Its preparation method is:

[0040] (1) After properly considering the burning loss, calculate the amount of raw materials required according to the above alloy composition and stoichiometric ratio; remove the oxide layer from industrial pure aluminum ingots, industrial pure magnesium ingots and Al-Si master alloy AlSi23 and dry them in advance. Heat to 200°C; calculate the amount of raw materials required according to the composition and stoichiometric ratio of the alloy;

[0041] (2) After melting the industrial pure aluminum ingots accounting for 25% of the height of the crucible into a molten pool at 710°C, add the remaining aluminum ingots;

[0042] (3) After the aluminum ingot is completely melted, the temperature is raised to 720°C, and the Al...

Embodiment 2

[0048] The weight percent of a high-elongation heat-resistant cast aluminum alloy is: according to the theoretical ratio, 11.0% Si, 0.4% Cu, 0.02% Mg, 0.1% Sc, 0.3% Zr, 0.1% Ti, and the balance is Al and not Avoid impurity Fe.

[0049] The preparation method is as follows: (1) Remove the oxide layer from industrial pure aluminum ingots, industrial pure magnesium ingots and Al-Si master alloy AlSi28, dry and preheat to 200°C; calculate the required the amount of raw material used;

[0050] (2) After melting the industrial pure aluminum ingots accounting for 25% of the height of the crucible into a molten pool at 715°C, add the remaining aluminum ingots;

[0051] (3) After the aluminum ingot is completely melted, the temperature is raised to 720°C, and the Al-Si master alloy is added in 3 times, and the temperature is kept constant at 715°C;

[0052] (4) After the Al-Si master alloy is completely melted, heat up to 760°C, add AlCu50, AlZr4 master alloy, AlTi5 master alloy, AlS...

Embodiment 3

[0057] The weight percent of a high-elongation heat-resistant cast aluminum alloy is: according to the theoretical ratio, 12.0% Si, 0.4% Cu, 0.05% Mg, 0.1% Sc, 0.1% Zr, 0.1% Ti, 0.2% V, the balance It is Al and unavoidable impurity Fe.

[0058] Its preparation method is:

[0059] (1) Remove the oxide layer from industrial pure aluminum ingots, industrial pure magnesium ingots and Al-Si master alloy AlSi23 and dry and preheat to 200°C; calculate the amount of raw materials required according to the composition and stoichiometric ratio of the alloy;

[0060] (2) After melting the industrial pure aluminum ingots accounting for 25% of the height of the crucible into a molten pool at 710°C, add the remaining aluminum ingots;

[0061] (3) After the aluminum ingot is completely melted, the temperature is raised to 720°C, and the Al-Si master alloy is added in 2 times, and the temperature is kept constant at 710°C;

[0062] (4) After the Al-Si master alloy is completely melted, rais...

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
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a heat-resisting cast aluminum alloy with high elongation and a pressure casting preparation method thereof. The alloy comprises, by weight percent, 9.0%-12.0% of Si, 0.05-0.4%of Cu, 0.02-0.05% of Mg, 0.05-0.1% of Sc, 0.3-0.5% of M, and the balance Al and inevitable impurities, wherein M is at least one element of Ti, Zr and V. After pressure casting is conducted on the heat-resisting cast aluminum alloy with high elongation, the yield strength of the pressure casting alloy reaches 169MPa at the room temperature, the elongation reaches 10.0%, the extension strength reaches 190MPa at the high temperature of 200 DEG C, the high temperature elongation reaches 14.0%, the room temperature and heat-resisting performance are excellent, the alloy can be applied to automobile parts without solid solution heat treatment, and the need of automobile lightweight development is met.

Description

technical field [0001] The invention relates to a high-elongation heat-resistant cast aluminum alloy and a pressure casting preparation method thereof, belonging to the field of industrial aluminum alloys and their manufacture. Background technique [0002] Aluminum alloy has the characteristics of low density, high specific strength and specific stiffness, good corrosion resistance, excellent electrical and thermal conductivity, easy recycling, and good low-temperature performance. It is widely used in transportation, aerospace, electronics and other fields. Die casting is a casting method in which liquid metal is filled into the die-casting mold cavity at high speed under high pressure and solidified under pressure to form a casting. Die casting not only makes castings have high strength, dimensional accuracy and surface finish, but also is easy to realize mechanization and automation, high production efficiency, and can produce thin-walled castings with complex shapes. W...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/03C22C1/06B22D17/00
CPCB22D17/00C22C1/026C22C1/03C22C1/06C22C21/02
Inventor 姚杰王春涛叶兵蒋海燕丁文江
Owner NINGBO HELI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap