High-performance powder steel thermojet deposition forming process

Abstract

The invention discloses a high-performance powder steel thermojet deposition forming process, and belongs to the field of powder steel manufacturing processes. The high-performance powder steel thermojet deposition forming process comprises the steps that a technician controls a plunger to drop, and metal liquid is injected into a mixing chamber through a liquid guide block; at the same time, metal powder is guided into the mixing chamber through a solid input pipe so that the magnetized metal powder can be mixed with liquid metal; the liquid metal is atomized under the impact of high pressureairflow introduced by the atomization; and through the flow guide by a filter plate in a flow guide pipe, the metal powder and part of the atomized metal liquid enter an inner flow guide column, andthe other part of the atomized metal liquid flows through an outer flow guide column, so that the outer layer jetted out by the flow guide pipe is the atomized metal liquid, and the inner layer jettedout by the flow guide pipe is a double-layer jet flow body of the mixture of the metal powder and the atomized metal liquid. According to the high-performance powder steel thermojet deposition forming process, the jet deposition of powder steel can be achieved through the double-layer jet flow body, the metal powder and metal liquid output in the unit time are certain, and it is easy to make solid particles in the powder steel subjected to jet deposition distributed uniformly.

Description

technical field [0001] The invention relates to the field of powder steel manufacturing technology, more specifically, relates to a high-performance powder steel thermal spray deposition molding process. Background technique [0002] The principle of spray deposition technology is: the molten metal flowing out of the flow tube is broken by the high-speed airflow at the atomization spray outlet, atomized into fine and dispersed droplet jets, and the atomized droplet jets are accelerated under the action of high-speed airflow, and are combined with The air flow performs heat exchange. The droplets smaller than a certain critical size solidify into solid particles, the larger-sized droplets are still in the liquid state, and the intermediate-sized droplets are semi-solidified particles containing a certain proportion of liquid phase. These solidification degrees are different. After the molten droplets hit the deposition surface at high speed, they attach, spread, accumulate an...

AI Technical Summary

Problems solved by technology

[0003] Spray deposition technology is used to prepare metal matrix composite ingots. In the current research and practice, most of the intubation method is used to directly spray the reinforced solid phase particles into the metal melt atomization cone, but this method is not easy to ensure the solid phase Uniform distribution of particles in the deposited body with low material utilization

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