An active metal powder transfer oxygen barrier screening system

Abstract

The invention discloses an oxygen-isolation screening system for active metal powder transfer. An isolation box is used as the sealed vibrating screening environment of the vibrating screening machine. The gas circuit interface of the sensor is connected to the intake pipe of the oxygen sensor. The protective gas circuit interface is set on the side away from the gas circuit interface of the sensor. The protective gas source connected to the protective gas circuit interface is connected to the protective gas. The relative setting ensures the accuracy of the oxygen content detection of the isolation box. The dehumidifier is used to dehumidify and dry the isolation box, and the oxygen content detection sensor is used to perform closed-loop feedback control based on the oxygen content value. According to the actual working conditions of the metal powder, all The oxygen content value of the required environment can be set, which can be a specific value or a range value. When the system is working, the internal environment can be guaranteed and the oxygen content can be monitored in real time. The device of the present invention is simple, safe and reliable.

Description

technical field [0001] The invention belongs to the field of active metal powder screening and transfer, and in particular relates to an oxygen barrier screening system for active metal powder transfer. Background technique [0002] 3D printing technology has been successfully used in many fields such as automobiles, energy, ships, and aerospace, and has broad market prospects. As the most potential rapid prototyping technology, metal 3D printing technology has attracted wide attention. Among them, the process methods that can directly manufacture metal functional parts are mainly wire additive manufacturing and powder additive manufacturing, and metal powder additive manufacturing. Material manufacturing mainly includes: Selective Laser Sintering (Selective Laser Sintering, SLS) technology, Direct Metal Laser Sintering (DMLS), Selective Laser Melting (Selective Laser Melting, SLM) technology, laser near net shape (Laser Engineered Net Shaping, LENS) technology and electron...

AI Technical Summary

Problems solved by technology

The whole process cannot strictly guarantee the water and oxygen content inside the powder sieving machine. In addition, even if the argon gas is insufficient or the oxygen content exceeds the standard at the beginning of powder sieving, there will be no inert gas supplement in the follow-up. It is difficult to avoid the equipment due to poor air tightness. Leakage, which in turn leads to safety hazards in the unsifted powder process, and may not provide acceptable quality sieved powder

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