Bottom leakage casting ultrasonic auxiliary system and bottom leakage casting system

Abstract

The invention relates to the field of small-size metal particle casting, and particularly relates to a bottom leakage casting ultrasonic auxiliary system and a bottom leakage casting system. The ultrasonic auxiliary device comprises an ultrasonic generator, an annular transducer and a pressing device; the pressing device is connected with the annular transducer and is used for arranging the annular transducer at the bottom of the outer wall of a crucible through the pressing device; the ultrasonic generator is in signal connection with the annular transducer and used for sending ultrasonic signals to the annular transducer. According to the bottom leakage casting ultrasonic auxiliary system and the bottom leakage casting system, the situation that when small-size metal particles are prepared, a crucible bottom hole is small in size and prone to being blocked can be effectively avoided, the particle size uniformity and the nearly spherical appearance of the prepared metal particles areguaranteed, meanwhile, the particle size of the metal particles prepared through a bottom leakage casting method can be further reduced, the quality of the metal particles is improved, so that the application range of the system is wider.

Description

technical field [0001] The invention relates to the field of casting of small-sized metal particles, in particular to an ultrasonic auxiliary system for bottom leak casting. Background technique [0002] There are many methods for preparing spherical and near-spherical metal particles. Among them, the metal melt is directly poured from a crucible with a bottom hole into a cooling water tank or other specially prepared liquid by using the bottom leakage casting method. By adjusting the number and size of the bottom holes, injecting Depending on the process parameters such as speed, cooling liquid composition and temperature, metal particles of different sizes can be obtained. [0003] The principle is that when the metal melt falls into the cooling liquid below, it will condense into a spherical shape through the split coupling effect of gravity and the tension of the cooling liquid, and solidify under the rapid cooling of the cooling liquid, and spherical or nearly spherical...

AI Technical Summary

Problems solved by technology

[0004] If the size of the bottom hole is too large, the injection speed of the molten metal will be too fast, causing adhesion during the falling process; if the size of the bottom hole is too small, the molten metal may not fall smoothly or even block the bottom hole during the casting process. May cause the final product to be prepared not to be spherical or nearly spherical, but to form filaments or irregular shapes

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