Composite sealing assembly, plasma rotating electrode atomization powder manufacturing device and powder manufacturing method

Abstract

The invention relates to a composite sealing assembly, a powder manufacturing device and a powder manufacturing method, and relates to the technical field of powder manufacturing. The composite sealing assembly comprises a V-shaped sealing ring, a fixed plate, a movable plate, a flange, a V-shaped cushion block and a locking nut, wherein a cavity is formed in the fixed plate, and the movable platecapable of moving up and down is arranged in the cavity; the fixed plate is fixedly connected with the flange; the V-shaped sealing ring is arranged on the inner side of the flange; the outer side face of the flange is connected with the locking nut; and the V-shaped cushion block is arranged between the V-shaped sealing ring and the locking nut. The powder manufacturing device comprises a feeding platform, a rotary driving device and an atomization chamber, and the composite sealing assembly is arranged at an opening of the atomization chamber. The powder manufacturing method comprises the steps that an electrode bar penetrates through the composite sealing assembly, powder is manufactured, and the electrode bar exits from the composite sealing assembly. The V-shaped sealing ring of thecomposite sealing assembly can be used for tightly sealing the electrode bar and the like firstly, the movable plate is used for sealing the electrode bar and the like again, air leakage of the atomization chamber is prevented, the sealing effect is improved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of powder making, in particular to a composite sealing assembly, plasma rotating electrode atomization powder making equipment and a powder making method. Background technique [0002] Plasma rotating electrode atomization (PREP) technology is a metal powder preparation method based on the principle of high-speed rotary centrifugal atomization. The metal powder produced by this technology has excellent performance in hot isostatic pressing (HIP), thermal spraying, Porous catalytic packing and other powder metallurgy fields have been widely used. Titanium-aluminum alloy (brittle and difficult-to-machine material) is a new type of lightweight high-temperature material for engines with great application potential. The powder metallurgy near-net shape technology can obtain a microstructure that is finer and has a smaller interlayer spacing than casting metallurgy. Compared with the inert gas atomization powder ...

AI Technical Summary

Problems solved by technology

[0005] The problem existing in the prior art is mainly that the sealing device installed at the opening of the atomization chamber has a poor sealing effect, resulting in that when the tip of the transition rod and the brittle electrode rod material are pulled out from the atomization chamber and replaced with a new electrode rod material, the The inert atmosphere is destroyed, and the spray chamber needs to be evacuated and filled with inert gas again for the next production.

In this way, each bar needs to be vacuumed and filled with inert gas for pulverization, resulting in problems such as large consumption of inert gas, low production efficiency, and high cost.

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