| dc.description.abstract | Metal additive manufacturing is a technology that is currently being developed in the fields of automobile, aerospace, military industry, etc. In order to meet the needs of today′s industrial applications, but due to the metal powder is expensive and extremely demanding. In order to reduce the cost of raw materials, this research has developed an automated powder recovery system.
Nano-sized powders are prone to screen clogging during sieving, so ultrasonic vibration is added to test the effect of ultrasonic power on the sieving process to find the best ultrasonic power for the systems.
Use the best ultrasonic power with five powder mass flow rates and different gas flow rate, Experiments were carried out to observe the effects of different system front-end operating conditions on system performance, and the efficiency of the system was evaluated by screening efficiency, and the screening area was used for evidence.
In this study, the cumulative mass of the powder and the image analysis method were used to calculate the screening efficiency and the screening area. The experimental results confirmed that the screening area was proportional to the screening efficiency, and the appropriate ultrasonic power, powder mass flow rate and the system were used during the operation of the system. By conveying the gas flow rate, the classification of recycled powder and waste powder can be effectively carried out. Therefore, the automatic powder recovery system of this set can reduce the raw material cost of the powder bed melt molding technology in practical application.
| en_US |