Totally closed gas atomization pulverization device

A gas atomization and pulverizing device technology, which is applied in the field of gas atomization melt to manufacture ultra-fine powder, can solve the problems of oxide and nitride blockage, metal blockage of guide pipe, etc. Cooling and solidification, the effect of flushing the ends

Inactive Publication Date: 2012-04-18
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to solve the above-mentioned technical problems and provide a fully enclosed gas atomization powder making device, which can effectively solve the problem of metal blockage of the nozzle of the atomizer, especially the blockage of oxides and nitrides

Method used

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  • Totally closed gas atomization pulverization device
  • Totally closed gas atomization pulverization device
  • Totally closed gas atomization pulverization device

Examples

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Embodiment 1

[0056] A fully enclosed gas atomization powder making device, the schematic diagram of its appearance and structure is as follows: figure 1 As shown, in the figure, 1 is a thermal insulation crucible, 2 is an extraction port A, 3 is a telescopic plastic tube A, 4 is a glove I, 5 is a power supply interface I connected to the heating body of the nebulizer, 6 is a glove II, and 7 is a The nozzle of the atomizer, 8 is the intake pipe of the nozzle, 9 is the retractable plastic tube B, 10 is the glove III, 11 is the extraction port B, 12 is the atomization tower, 13 is the valve of the atomization tower, 14 is the glove III 15 is the power supply interface II for the heating body of the atomizer, 16 is the vacuum pump interface, 17 is the glove V, and 18 is the glove VI.

[0057] There is a two-layer vacuum valve on the above-mentioned extraction port A2, and the structural diagram is as follows: figure 2 As shown, among the figure, 21 is an inner layer vacuum valve, 22 is an i...

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Abstract

The invention discloses a totally closed gas atomization pulverization device. The device comprises a heat insulation crucible, an atomizer, an atomization tower, a telescopic plastic pipe A, a telescopic plastic pipe B and the like, wherein the atomizer is arranged in the telescopic plastic pipe A; the telescopic plastic pipe A is respectively connected with the heat insulation crucible and the upper surface of a nozzle of the atomizer in a sealed mode; the atomization tower is connected with the lower surface of the nozzle through the telescopic plastic pipe B in the sealed mode; and two half metal cylindrical barrels are arranged in inner and outer metal grooves on the lower surface of the nozzle and on the atomization tower, so that a totally closed system structure is formed. The structure can prevent oxide and nitride from being formed on the atomizer and blocking the atomizer. The totally closed gas atomization pulverization device has the advantages that: the device has a simple structure and is convenient to install, blocking is effectively prevented, the quality of powder is improved, and the like.

Description

technical field [0001] The invention relates to the technical field of producing ultrafine powders from gas atomized melts, more specifically to a method for preparing ultrafine powders of metals or alloys Fully enclosed gas atomization powder making device . Background technique [0002] In the industry of preparing metal and alloy powders, gas atomization technology has become one of the main methods for producing high-performance powders. The process of vacuum atomization pulverization is as follows. Firstly, the metal or metal alloy is smelted under vacuum conditions. The molten metal that reaches a certain degree of superheat is kept for an appropriate time and then transferred to the heat preservation crucible (tundish). Under the condition of gas protection, , the metal liquid flows out through the guide tube, and the metal liquid is atomized and broken into a large number of fine droplets by the high-pressure inert gas flow through the nozzle. These fine droplets so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 江国健徐家跃
Owner SHANGHAI INST OF TECH
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