Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder

A technology for manufacturing gas and metal powder, applied in the field of metal powder manufacturing, can solve the problems of complex atomization equipment and achieve better atomization effect

Inactive Publication Date: 2011-02-09
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has significantly improved the atomization effect, but the obtained powder is not s

Method used

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  • Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder
  • Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder
  • Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1:

[0016] Such as figure 1 As shown, the composite atomizer for manufacturing gas atomization rapid solidification spherical fine metal powder of this embodiment includes a clamp pot 2 for containing molten metal, and a metal liquid conduit 3 at the bottom of the clamp pot is connected to a high-speed gas flow source. The atomizer chamber 4 of the annular single-chamber structure of the common annular structure; the annular bottom surface surrounding the atomizer chamber is provided with two concentric inner and outer structures composed of a plurality of nozzles arranged in a uniform arrangement The nozzle rings 5 ​​and 6, and the nozzles are arranged in a slanting manner with their axis intersecting the lower extension line of the catheter axis; wherein, the axis of all the nozzles on the inner nozzle ring 5 close to the catheter axis are equal The axis of the catheter intersects with the apex point α1 of the atomization zone II, and the axis of all nozzles on ...

Example Embodiment

[0017] Example 2

[0018] Such as figure 2 As shown, the difference between this embodiment and embodiment 1 is that the atomizer chamber is a two-ring cavity structure separated by a vertically arranged annular partition, and the nozzles arranged on the inner nozzle ring 5 All are connected to the inner ring cavity 7, and the nozzles arranged on the outer nozzle ring 6 are all connected to the outer ring cavity 8.

[0019] When the composite atomizer of the present invention is used for the production of amorphous Al-Ni-Y alloy spherical powder, the gas atomization pressure is 1.0Mpa, and the cooling rate is 10 6 K / s, the average particle size of the prepared Al-Ni-Y amorphous powder is 7-12μm.

[0020] When the composite atomizer of the present invention is used for the production of Al-Mn quasicrystalline spherical powder, the atomization pressure is 1.5 Mpa, and the average particle size of the prepared Al-Mn quasicrystalline powder is 10-14 μm.

[0021] When the composite atom...

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Abstract

The invention relates to a composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder, which comprises a crucible for containing metal liquid and an atomizer stationing chamber which is arranged around a metal liquid guiding pipe at the bottom of the crucible, is communicated with a high-speed airflow source and has an annular structure. The composite atomizer is characterized in that: inner and outer nozzle rings which are formed by a plurality of nozzles arranged in a mode of uniform distribution and have structures of concentric circles are formed around the annular bottom surface of the atomizer stationing chamber, and the nozzles are arranged in a skew mode which makes the axes of the nozzles intersected with the lower extended line of the axis of the liquid guiding pipe, wherein the axes of all nozzles on the inner nozzle rings close to the axis of the liquid guiding pipe and the axis of the liquid guiding pipe intersect at a vertical angle point alpha 1 in an atomizing area II, the axes of all nozzles on the outer nozzle rings away from the axis of the liquid guiding pipe and the axis of the liquid guiding pipe intersect at a vertical angle point alpha 2 of an atomizing area III, and the distance between the two vertical angle points is between 0.1 and 0.4 millimeter; and the atomizing pressure is controlled to be between 0.5 and 2.5 MPa.

Description

technical field [0001] The invention belongs to the field of metal powder manufacture, and in particular relates to a composite atomizer for manufacturing gas atomized rapidly solidified spherical fine metal powder (amorphous, quasi-crystalline and microcrystalline powder). Background technique [0002] Stephen D. Ridder et al. summarized the atomization into three stages based on the atomization of ordinary gas taken by high-speed photography. Atomization zone I: the liquid flow at the outlet of the infusion tube expands into bands and is broken into scattered small liquid flows by the impact of the airflow for the first time; Atomization zone II: the small liquid flows through the impact of high-energy airflow to form a liquid mist, which is the main atomization zone ; Atomization Zone III: The liquid mist aggregates into small droplets and solidifies. [0003] According to the above analysis, preventing liquid mist aggregation is the key to improving the effect of powder...

Claims

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Application Information

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IPC IPC(8): B22F9/08
Inventor 米国发王狂飞王海燕王有超陈立林郑喜平
Owner HENAN POLYTECHNIC UNIV
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