Method and device for measuring atomization particle size distribution and atomization rate of high-melting-point materials

Abstract

The invention provides a method and device for measuring atomization particle size distribution and the atomization rate of high-melting-point materials. The device comprises a sealed container, a sealed crucible, heating devices, a collecting vessel and a pipeline adjusting device; the sealed crucible and the heating devices are arranged in the sealed container, the heating devices are arranged on the periphery of the sealed crucible, and the collecting vessel is connected with the lower part of the sealed crucible; the pipeline adjusting device comprises a main pipeline, a first branch pipeline, a second branch pipeline, an inflating hole and an exhaust hole, wherein the first branch pipeline and the second branch pipeline are connected with the main pipeline, and the inflating hole andthe exhaust hole are formed in the sealed container; the first branch pipeline communicates with the sealed container, and the second branch pipeline communicates with the sealed crucible; and a gas flowmeter is mounted on the main pipeline, and a pressure gauge is mounted on the second branch pipeline. All liquid drops in an atomization field are collected and cooled into solid particles, and theproblems that an existing method and device are insufficient in resolution ratio, and overall particle size distribution and atomization rate of the atomization field cannot be measured are solved successfully.

Description

technical field [0001] The invention relates to a method for measuring atomization particle size distribution and atomization rate, in particular to a method for measuring atomization particle size distribution and atomization rate of high melting point materials, and belongs to the field of research on atomization characteristics of high melting point materials. Background technique [0002] The fine metal powder produced by atomization pulverization technology is widely used in aviation, aerospace, ship, automobile, metallurgy and other fields, especially in some new fields of material preparation such as powder injection molding, self-propagating superalloy, metal Matrix composite materials are also based on fine metal powder. The atomization particle size distribution and atomization rate of metal spray are an important index of atomization powder making technology; in thermal spraying technology, it is necessary to use coating materials such as corrosion-resistant metal ...

AI Technical Summary

Problems solved by technology

For example, the imaging method uses a high-speed camera to record the spray process, and then combines image processing software to calculate the atomization rate and droplet size distribution. The high area is not applicable; another method is to use a spray particle size analyzer to measure the particle size distribution of the atomization field. Its working principle is based on the principle of laser forward scattering. Scattering occurs, and the distribution of scattered light energy is related to the size of the particles. The forward scattered light energy distribution is measured by a specially designed and manufactured fan-shaped multi-element photodetector, and then the measured data is processed by an inversion algorithm to obtain the measured The particle size distribution of the particles, however, this method can only measure the droplet size distribution passing through a straight line at a time, and use the particle size distribution on a straight line to infer the overall distribution, that is, it is assumed that the distribution of the atomization field is axisymmetric However, in actual situations, there may be large differences in the distribution of droplet sizes in different radial directions, which will lead to large errors, and these two methods cannot accurately measure the overall atomization rate of the spray field

Images