Reduced metal particle high speed micro-forging forming process

Abstract

The invention relates to a reduced metal particle high speed micro-forging forming process. The process comprises the following steps: a) preparing spherical metal particles through an atomization method, and carrying out the micro-oxidation treatment on the particles; b) reducing the metal particles in a high temperature high pressure reducing cavity so as to make the metal particles obtain highactivity fresh surfaces, filling up the high pressure reducing cavity with a gas mixture of inert gas and hydrogen, setting the proportion of the hydrogen to between 1 and 6 percent, and setting the temperature of the metal particles inside the reducing cavity at 0.5Tm to 0.8Tm and the pressure at 20 to 40atm; and c) carrying out the high speed micro-forging forming of the metal particles on a die when the metal particles are accelerated by an accelerator, and obtaining a die surface-shaped material. The body material obtained through the high speed micro-forging forming of the fresh reduced metal particles with a high speed, a high temperature and high surface activity has a metallurgical integrated structure. The process is suitable for the preparation of metal materials with various complex shapes.

Description

High-speed micro-forging forming process of reduced metal particles technical field The invention relates to a reduction high-speed micro-forging forming technology of metal particles, in particular to a reduction metal particle high-speed micro-forging forming process in which surface micro-oxidized particles are directly micro-forged after reduction to form structural materials. Background technique Usually, metal structural materials are formed by the solidification of molten metal in a certain container. There are also some materials that are formed by solidification into a solid under a specific modeless condition. However, the formation of these materials is limited by the mold to a certain extent, and the shape of the preparation should not be too complicated. If the structure is complex, it will be difficult to process after the cast state is formed. The density of the metal is difficult to reach the ideal value, which affects the mechanical properties of the stru...

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Problems solved by technology

The cold spray technology completely utilizes the kinetic energy of the particles for deposition, which has extremely high requirements for the surface state of the particles. Once an oxide film exists on the surface, the energy consumption is extremely high, and the oxygen in the structure cannot be eliminated. Only erosion often occurs, and the deposition rate is relatively low. Low

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