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 switchvalve 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 advantagedin 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 ceramic powder thermal spraying, in particular to a continuous conveying device for ceramic powder thermal spraying. Background technique [0002] Thermal spraying is a method of preparing coatings and has become one of the new technologies for surface protection and strengthening of materials. It uses a heat source to heat the sprayed material to melt or soften it and spray it on the surface of the substrate at a certain speed to form a coating. The 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 the size of the workpiece is not limited, as large as iron towers, bridges, and small mechanical parts. The coating is prepared by spraying. The spraying materials can be metallic materials, inorganic non-metallic materials such as ceramics and ceramic-metal composite materials. Ce...

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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