Papers by Keyword: Feeding Device

Abstract: The article presents technology of selective laser melting formation of heterogeneous powder structures. The results of comparative investigations of feeding device designs are shown. There is also presented a multi-powder system developed for providing dosed powder feed for different metals or alloys with set distribution in a layer.

Abstract: Through the experimental comparison of free feeding technology, roller feeding technology and spiral engagement feeding technology, it can be seen that the spiral engagement feeding technology has significantly increased production capacity, improved extrusion stability, reduced the energy consumption and does not hold shaft, not leak rubber, etc; at the same time, industrial application research on spiral engagement cold feeding extruder was carried out, as well as expanding its application research on this extruder with short fiber compound and environmental protection plate compound which is composed by waste plastic, rubber compound and waste oil. It proves that the work principle of spiral engagement cold feeding technology is feasible, also demonstrates that this extruder has a broad prospect of application.

Abstract: In order to study the performance of speed feeding, an experimental feeding device was designed. The main design considerations are: Easy to adjust parameters, separate movement control of each device structure, and distribution control for the suction and blowing in the feeding device. The control system is developed on windows PC system. KPCI-884 motion control card is adopted as the I/O interface for the motion control, feeding movement is driven by servo motors, a high-speed solenoid valve is used for gas distribution and system UI is developed in VC++ language. A test run indicates that the system is in good operational condition. In the research, the synchronous control of multiple servo motors in a open-loop state is achieved as well as the detection and control of peripheral signals.

Abstract: In strip casting process, surface wave and temperature distribution in the molten pool directly affect the process stability and the quality of products. In this paper, physical model and numerical model have been set up and simulated. It has been found that in the corner of the molten pool there is a large wave amplitude on the surface. However, in the middle of molten pool the surface wave is low. The temperature distribution of molten pool showed that the present feeding device need to be optimized.