Ceramic powder thermal spraying continuous delivering apparatus

Abstract

The invention relates to a ceramic powder thermal spraying continuous delivering apparatus which comprises a vibration hopper. A cover plate is covered on the vibration hopper. The cover plate is connected with the vibration hopper in a sealed manner. A material outlet of the vibration hopper is connected to a spraying nozzle of a spraying apparatus through a powder conveying pipe. The apparatus also comprises a material storage chamber. A material chamber cover is covered on the material storage chamber. The material chamber cover and the material storage chamber are connected in a sealed manner. A powder delivering pipe is arranged on the bottom of the material storage chamber. The lower part of the powder delivering pipe is inserted into the vibration hopper. A powder delivering switch valve is arranged on the powder delivering pipe. An upper nitrogen delivering pipe used for filling nitrogen into the material storage chamber is arranged on the upper part of the material storage chamber. A lower nitrogen delivering pipe used for filling nitrogen into the vibration hopper is arranged on the upper part of the vibration hopper. The apparatus provided by the invention is advantaged in that: thermal spraying is carried out by using the ceramic powder continuous delivering apparatus, such that ceramic spraying equipment can work continuously without interruption. Therefore, time and effort of operators are saved, and spraying quality is ensured.

Description

technical field [0001] The invention relates to a powder feeding device for thermal spraying of ceramic powder, in particular to a continuous conveying device for thermal spraying of ceramic powder. Background technique [0002] Thermal spraying is a method of preparing coatings and has become one of the new technologies for material surface protection and strengthening. It uses a heat source to heat, melt or soften the sprayed materials, and sprays them onto the surface of the substrate at a certain speed to form a coating. Its substrate can be almost all kinds of materials, including inorganic materials such as metal, ceramics, glass, and organic materials such as plastic, wood, paper, cloth, etc., and there is no limit to the size of the workpiece, as large as iron towers, bridges, and as small as mechanical parts. Spray to prepare the coating. Spraying materials can be metal materials, or inorganic non-metallic materials such as ceramics and ceramic-metal composite mate...

AI Technical Summary

Problems solved by technology

The equipment needs to be disassembled and assembled frequently, which will easily lead to the loss of powder conveying equipment; the machine needs to be shut down after the powder is added, and the temperature of the matrix will drop after the shutdown, and it needs to be preheated again, which reduces the utilization rate of the equipment; the difference in the coating quality is caused by the difference in the temperature of the matrix after the powder is added. , easy to cause the coating to fall off; due to the difference in powder height before and after spraying, it is easy to cause the difference in powder feeding amount, resulting in uneven coating thickness

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