Graphite mould used for manufacturing local reinforcement aluminum matrix composite materials

Abstract

The invention relates to a graphite mould used for manufacturing local reinforcement aluminum matrix composite materials. The graphite mould comprises a graphite mould body and a fastening iron frame. The graphite mould body is of a cuboid structure, two aluminum melt filling chambers of cylindrical structures are arranged inside the graphite mould body, an aluminum melt casting port is arranged between the two aluminum melt filling chambers, and the aluminum melt casting port is communicated with the aluminum melt filling chambers on the two sides through an aluminum melt channel; air holes are formed in the bottoms of the two aluminum melt filling chambers respectively, quartz sand pad bodies are arranged above the air holes, and tungsten-rhenium thermocouples are inserted in the two air holes; the graphite mould body is sleeved with the fastening iron frame, and the fastening iron frame is fastened through fastening screws. The graphite mould is simple in structure, the compound particle local reinforcement aluminum matrix composite materials manufactured by utilizing the graphite mould have the advantages of being quick in response, simple in process, good in filling performance and excellent in overall performance, matrixes and reinforced particles are combined firmly, and expensive reinforcement phases can be saved.

Description

technical field [0001] The invention relates to a graphite mold for preparing locally reinforced aluminum matrix composite materials, belonging to the technical field of metal matrix composite material preparation. Background technique [0002] At present, aluminum matrix composites are widely used in technical fields such as aerospace, automobile transportation and electronic components, and their reinforcing phases are mainly SiC, TiC, Al 2 o 3 Integral reinforcement particles mainly composed of ceramic particles. On the one hand, these overall reinforcement particles react violently in the cavity and are difficult to control; on the other hand, although these overall reinforcement particles are beneficial to improve the overall wear resistance of composite wear-resistant parts, they reduce the overall toughness of composite wear-resistant parts. , Moreover, reinforcement particles appear in parts that do not require reinforcement, which leads to waste of reinforcement p...

AI Technical Summary

Problems solved by technology

The traditional TiC preparation adopts the carbothermal reduction method, which is to convert Ti or TiO 2 The mixture with C is heated in a vacuum graphite tube furnace and carbonized at a high temperature above 2200°C, which has the disadvantages of complex equipment, long reaction time, high energy consumption, low carbon content and low purity of the product.

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