Preparation method for ceramic particle reinforced aluminum alloy

A ceramic particle and aluminum alloy technology, which is applied in the field of preparation of ceramic particle reinforced aluminum alloy, can solve the problems of decreased fluidity of alloy liquid, reduced casting formability, reinforcement cost, etc., to reduce stirring speed, reduce quantity, and promote particle dispersion uniform effect

Inactive Publication Date: 2021-03-12
WUHU GUODING MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on the preparation of composite materials by stirring casting method is mainly focused on the use of sand casting. Due to the addition of reinforcing particles, the viscosity of the composite material solution increases. According to the theory of multiphase fluid mechanics, the fluidity of the alloy liquid decreases and the casting formability decreases; Casting and gravity metal casting generally have follow-up processing, and the existence of reinforcing particles has caused great difficulties to follow-up work and increased the cost of manufacturing and processing, especially for complex parts. Therefore, it is necessary to develop a composite with high efficiency and near net shape Material processing technology is the key to the popularization and application of this material. The present invention provides a preparation method of ceramic particle reinforced aluminum alloy to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment is a preparation method of ceramic particle reinforced aluminum alloy, which includes the following steps:

[0025] Step 1. Pretreatment of SiC particles: SiC particles are cleaned with industrial alcohol. After SiC particles and industrial alcohol are mixed in a stainless steel basin, they are put into ultrasonic cleaning, and multi-batch cleaning is used. 1kg of SiC particles are cleaned each time, and 750mL of alcohol is added. It is more appropriate; the same batch of SiC particles is washed repeatedly for 3 to 4 times; then the cleaned SiC particles are placed in a vacuum drying oven at 70°C to dry until the alcohol is completely evaporated and then taken out for high-temperature oxidation treatment;

[0026] Step 2. Adding SiC particles: SiC particles should be added from the center of the vortex generated by the stirrer; after the SiC particles are added, the stirring speed should be 100r / min, based on the damage caused by the surface metal liquid;...

Embodiment 2

[0037] This embodiment is a preparation method of ceramic particle reinforced aluminum alloy, which includes the following steps:

[0038] Step 1. Pretreatment of SiC particles: SiC particles are cleaned with industrial alcohol. After SiC particles and industrial alcohol are mixed in a stainless steel basin, they are put into ultrasonic cleaning, and multi-batch cleaning is used. 1kg of SiC particles are cleaned each time, and 750mL of alcohol is added. It is more appropriate; the same batch of SiC particles is washed repeatedly for 3 to 4 times; then the cleaned SiC particles are placed in a vacuum drying oven at 70°C to dry until the alcohol is completely evaporated and then taken out for high-temperature oxidation treatment;

[0039] Step 2. Adding SiC particles: SiC particles should be added from the center of the vortex generated by the stirrer; after the SiC particles are added, the stirring speed should be 100r / min, based on the destruction of the surface metal liquid; the...

Embodiment 3

[0050] This embodiment is a preparation method of ceramic particle reinforced aluminum alloy, which includes the following steps:

[0051] Step 1. Pretreatment of SiC particles: SiC particles are cleaned with industrial alcohol. After SiC particles and industrial alcohol are mixed in a stainless steel basin, they are put into ultrasonic cleaning, and multi-batch cleaning is used. 1kg of SiC particles are cleaned each time, and 750mL of alcohol is added. It is more appropriate; the same batch of SiC particles is washed repeatedly for 3 to 4 times; then the cleaned SiC particles are placed in a vacuum drying oven at 70°C to dry until the alcohol is completely evaporated and then taken out for high-temperature oxidation treatment;

[0052] Step 2. Adding SiC particles: SiC particles should be added from the center of the vortex generated by the stirrer; after the SiC particles are added, the stirring speed should be 100r / min, based on the destruction of the surface metal liquid; t...

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Abstract

The invention belongs to the field of material preparation, and particularly relates to a preparation method for a ceramic particle reinforced aluminum alloy. According to a continuous stirring and casting process principle, a set of stirring, smelting and stirring process as well as preparation schemes for preparing a SiC particle reinforced composite material, which mainly include pretreatment of SiC particles, adding of the SiC particles and preparation of castings; an extrusion casting method is adopted for preheating a mold to a temperature of about 200 DEG C, and a 1000KN press is adopted for extruding and casting the composite material; pressure is controlled by a PLC, and 50MPa extrusion pressure is adopted in the preparation process, a casting temperature of the composite materialis 650 DEG C, and pressure-maintaining time lasts for 30 seconds, so that the castings are prepared. The semi-solid-state and liquid-state stirring method is an effective method for preparing the composite material, so that mold filling ability of the composite material is favorably improved and the complete castings can be obtained.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a preparation method of ceramic particle reinforced aluminum alloy. Background technique [0002] In recent years, with the rapid development of the aviation industry, higher requirements have been placed on the performance of materials, especially in terms of light weight, high temperature resistance and dimensional stability. Metal-matrix composites represented by particle-reinforced aluminum-matrix composites are well-applied in the aerospace field due to their excellent performance. [0003] The preparation method of particle-reinforced aluminum matrix composites includes the stirring casting method. The stirring casting method uses mechanical, ultrasonic, and electromagnetic stirrers to make the aluminum liquid form a rotating motion, and the reinforcing particles are added to the melt, and through the rotating motion of the aluminum liquid, the The particles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/02C22C21/02B22D18/02
CPCC22C1/1036C22C21/02B22D18/02C22C1/1047
Inventor 俞家华
Owner WUHU GUODING MACHINERY MFG
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