Free-falling powder mixing gas atomizing water-cooling fast-setting magnetic abrasive preparing equipment

Abstract

The invention provides free-falling powder mixing gas atomizing water-cooling fast-setting magnetic abrasive preparing equipment which comprises a double-nozzle atomizing and water cooling device (41), a spiral mixed powder conveying device (17), a water seal dust removing device (42) and a gas station (44). In the atomizing process, a low-pressure mixed powder jetting nozzle and a high-pressure gas flow nozzle are adopted, and therefore the problem that when a single nozzle is used, erosive wear is caused is solved; a free-falling manner is adopted, and therefore the problems that erosive wear to a molten metal flow guide pipe is caused and molten metal flows back and is sprayed upwards are avoided; a cooling manner of water cooling and fast setting is adopted, the problem that hard abrasive particles drift away from a metal matrix and the problem of control over the depth of distribution are solved, and hard abrasive is controlled to be distributed on a surface shallow layer of the magnetic abrasive; meanwhile, the flight distance of powder mixed molten metal drops is shortened, and the overall height of the free-falling atomizing and condensing chamber and equipment is reduced. The equipment is new equipment provided for realizing a free-falling powder mixing gas atomizing water-cooling fast-setting magnetic abrasive preparing method and preparing the high-performance magnetic abrasive.

Description

technical field [0001] The invention provides a free-fall mixed powder gas atomization water-cooled fast-setting magnetic abrasive preparation equipment, which belongs to the technical field of magnetic particle abrasive material preparation. Background technique [0002] High-efficiency ultra-finishing machining technology is a long-term priority research field funded and encouraged by the state, and the new automatic machining theory and technology for ultra-smooth free-form surfaces is a hot spot that manufacturers and researchers all over the world pay attention to. The processing quality of ultra-smooth free-form surface is an important symbol to measure a country's manufacturing technology level, and it is of great significance to ensure the development of the country's cutting-edge industries and certain high-tech industries. In recent decades, with the rapid development of computer technology and modern control theory and other related technologies, flexible processi...

AI Technical Summary

Problems solved by technology

[0018] At present, the main problems of magnetic grinding and finishing are the low service life of magnetic abrasives, poor metal cutting ability, difficult preparation and high cost.

[0019] (1) Jet nozzle problem: due to the use of a single nozzle, the jet velocity of the gas-solid two-phase flow is high, resulting in rapid erosion and wear of the jet nozzle, and it fails in a very short time, and the preparation function of the magnetic abrasive is lost; at the same time, it is also due to the A single nozzle is used, and the hard abrasive and high-pressure gas are used as the atomizing medium. If the jet velocity of the gas-solid two-phase flow is low, the atomization effect will be poor and the magnetic abrasive particles will be coarse. However, if the jet velocity of the gas-solid two-phase flow is high, although the magnetic Although the particle size of the abrasive is reduced, the hard abrasive will splash out again after entering the molten metal, resulting in a sharp decrease in the hard abrasive contained in the metal matrix of the magnetic abrasive, and the grinding performance of the magnetic abrasive is significantly reduced

[0020] (2) Condensation ra

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