Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

SiCp/Al-Si-Cu composite powder material and preparation method

An al-si-cu, composite powder technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems that affect the performance of powder metallurgy formed products, difficult to control powder particle size, poor interface bonding performance, etc., to improve flow Sexuality and physical and chemical properties, reducing surface impurities, reducing the effect of surface tension

Active Publication Date: 2021-08-20
NONFERROUS METALLIC OF HEBEI NEW LIZHONG GRP CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the preparation of silicon carbide aluminum alloy composite material powder is basically made by mixing two kinds of material powder, or it is formed by double nozzle gas atomization, or it is solidified and casted. There are many defects in the above method: such as silicon carbide The bonding performance with the aluminum alloy matrix interface is poor, the dispersion of the two powders is high; the powder particle size is difficult to control; the powder oxygen content is high; the Si particle size is large; the sphericity is poor and other problems, which directly lead to its chemical composition, density, The process performance such as particle size distribution and fluidity is reduced, which will eventually affect the performance of powder metallurgy formed products. Therefore, it is necessary to provide a SiCp / Al-Si-Cu that directly prepares the final shape, high purity, high performance, fine particle size and good interface bonding. Composite powder preparation method is very necessary

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
  • SiCp/Al-Si-Cu composite powder material and preparation method
  • SiCp/Al-Si-Cu composite powder material and preparation method
  • SiCp/Al-Si-Cu composite powder material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] The embodiment of the present invention provides a method for preparing SiCp / Al-Si-Cu composite material powder with high purity, high performance and fine particle size, which includes the following steps:

[0037] S1, SiCp / Al-Si-Cu composite material composition design:

[0038] In S1, increase Si and Cu content to improve fluidity and mechanical properties; add Mg, Sb, P elements to modify and improve wettability; add Zr element to refine grains; in order to meet low expansion, wear resistance and other properties , add the SiCp component. Raw materials include: Si: 5-20%; Cu: 0.2-6%; Mg: 0.1-3.0%; Sb: 0.01-0.20%; Zr: 0.05-0.80%; Fe: 0.20-0.80%; : 0.05-0.50%, the rest is Al. The mass ratio of SiCp to Al-Si-Cu is (1:2)-(1:20).

[0039] S2, SiC powder pretreatment:

[0040] In S2, put 10-150 μm national standard silicon carbide powder into a container filled with acetone, and clean it in an ultrasonic cleaner. Cleaning time: 10-40min, heating temperature: 45-55°C,...

Embodiment 1

[0048] This embodiment provides a method for preparing a high-purity, high-performance, fine-grained SiCp / Al-Si-Cu composite material powder, the steps are as follows:

[0049] S1. Composition design of SiCp / Al-Si-Cu composite material, Al-Si-Cu components are calculated by mass fraction, raw materials include: Si: 5.0%; Cu: 6.0%; Mg: 0.1%; Sb: 0.20%; Zr : 0.80%; Fe: 0.20%; P: 0.05%, the balance is Al, and the mass ratio of SiCp to Al-Si-Cu components is 1:15.

[0050] S2. Add 10 μm national standard silicon carbide powder into a container filled with acetone, and clean it in an ultrasonic cleaning machine. The cleaning time is 10 minutes, the heating temperature is 50°C, the vibration frequency is 15khz, and then ultrasonic cleaning is performed twice with distilled water. dry.

[0051] S3, at first the AlSiCu alloy ingot that does not contain Sb, Mg, P, Zr element is melted at 680 ℃; After melting, add Al-Sb master alloy, Al-Zr master alloy, high-purity magnesium successiv...

Embodiment 2

[0055] This embodiment provides a high-purity, high-performance, fine-grain SiCp / Al-Si-Cu composite powder preparation method, the steps are as follows:

[0056] S1, SiCp / Al-Si-Cu composite composition design: Si: 9.5%; Cu: 3.0%; Mg: 1.0%; Sb: 0.1%; Zr: 0.25%; Fe: 0.5%; The amount is Al, and the mass ratio of SiCp to Al-Si-Cu components is 1:3.

[0057] S2. Add 70 μm national standard silicon carbide powder into a container filled with acetone, and clean it in an ultrasonic cleaning machine. Cleaning time: 20min, heating temperature: 53°C, vibration frequency 30khz. Ultrasonic cleaning was performed three times with distilled water, and then dried in a drying oven after cleaning. First at 65°C for 35 minutes, then at 300°C for 80 minutes to perform double-stage drying.

[0058] S3, first melt the AlSiCu alloy ingot without Sb, Mg, P, Zr elements at 720 ° C; after melting, add Al-Sb master alloy, Al-Zr master alloy, high-purity magnesium (adding temperature 760 °C) through a...

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
Bulk densityaaaaaaaaaa
Tap densityaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a SiCp / Al-Si-Cu composite powder material and a preparation method. The preparation method comprises the following steps that S1, components of the SiCp / Al-Si-Cu composite material are designed firstly; S2, SiC powder is pretreated, and wettability of SiCp and aluminum alloy melt is improved; S3, alloy is melted, after melting is completed, SiCp is added at the temperature of 580-700 DEG C, uniform stirring is conducted, and SiCp / Al-Si-Cu interface bonding is achieved; and S4, production processes such as melt and atomization parameters are controlled, and powder is prepared. The difficulty of directly preparing the SiCp / Al-Si-Cu composite powder material is broken through, the powder which is high in purity and sphericity degree, controllable in particle size distribution interval and uniform in mixing can be prepared, the powder has excellent physical properties, process properties and finished product mechanical properties, and the requirements of a powder metallurgy process for the powder technology can be met.

Description

technical field [0001] The invention relates to the technical field of alloy powder preparation, in particular to a SiCp / Al-Si-Cu composite powder material and a preparation method. Background technique [0002] With the development of automotive cylinder heads, pistons, cylinders and other components in the direction of lightweight, high power, high performance, and low energy consumption, it is particularly important to use reasonable manufacturing materials, which will help improve the efficiency of the engine and extend its service life. Reduce noise and exhaust pollution, etc. [0003] Since Al-Si-Cu alloy has low density, good thermal conductivity, good friction reduction, wear resistance, and good workmanship; silicon carbide has the advantages of low expansion and high rigidity, and the combination of the two can meet the requirements of specific gravity reduction. Requirements for lower coefficient of linear expansion, corresponding improvement in wear resistance a...

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): C22C21/04C22C29/06C22C32/00C22C1/10B22F9/08B22F1/00C22C1/03
CPCC22C21/04C22C32/0063C22C29/065C22C29/067C22C1/1036C22C1/1005B22F9/082B22F1/065C22C1/1047
Inventor 李海军宗福春胡增武臧立根李作平左李庆刘永昌苑高利韩广普韩艳
Owner NONFERROUS METALLIC OF HEBEI NEW LIZHONG GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com