Method and device for preparing metal-based composite material by electric current direct heating dynamic sinter hot pressing

Abstract

The invention relates to a metal base composite material electric hot-pressed preparation and its device, which adopts electric hot-pressed furnace that comprises circuit control system, induction regulator, air-immersed transformer, dynamic caking furnace and computer data acquisition system. Thermal sintering mould comprises housing of normal carbon steel, mould and insulating ceramic layer, and mould is made of iron or high-purity carbite and its inner wall is embed insulating ceramic layer. The process proceeds under the conditions of pressure of 50-60MPa, input voltage of 5-20V and clinkering time of 5-20 minutes. The invention can produce products by high sintering in short time making use of low voltage and heavy current, and can produce product with good strength for extension and hardness.

Description

Technical field

[0001] The invention relates to the technical field of manufacturing metal matrix composite materials, and in particular to a method and device for preparing metal matrix composite materials by direct current heating dynamic sintering hot pressing. Background technique

[0002] Metal-matrix composites (MMC) are a type of composite materials, which have attracted people's attention because of their high specific strength, high specific modulus, high wear resistance and other excellent properties. The manufacturing process methods of MMC are generally divided into three categories, namely diffusion method, deposition method and casting method as shown in Table 1.

[0003] Table 1 Comparison of manufacturing methods of metal matrix composites

[0004] Method Enhancer Advantage Disadvantage Expand Scattered Law Powder metallurgy Pellets, short fibers Easy to handle, low reactivity Low productivity, high c...

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