Preparation device of foamed aluminum capable of effectively inhibiting drainage phenomenon

Abstract

The invention provides a preparation device of foamed aluminum capable of effectively inhibiting the drainage phenomenon. The preparation device comprises a crucible and an air blowing pipe, the crucible is divided into a liquid storage chamber and a foaming chamber, the liquid storage chamber is isolated from the foaming chamber through a partition plate, and the partition plate at the bottom of the crucible is provided with a drainage hole; the air blowing pipe is fixedly mounted on the side wall of the crucible, one end of the air blowing pipe is located in the foaming chamber, and the other end of the air blowing pipe is located outside the crucible and communicated with an air blowing source; a foam output pipe is communicated to the side wall of the crucible at the top of the foaming chamber, and an electromagnetic field generator is mounted on the foam output pipe. The direction of a magnetic induction line of an electromagnetic field generated by the electromagnetic field generator is perpendicular to the direction of gravity. According to the preparation device, the electromagnetic braking principle is initiatively introduced into a foam aluminum preparation process, the drainage phenomenon is effectively inhibited, the thickness of a bubble liquid film can be manually controlled, the bubble combination phenomenon is effectively prevented, and bubbles in a melt are distributed more evenly.

Description

technical field [0001] The invention belongs to the technical field of aluminum foam preparation, and in particular relates to an aluminum foam preparation device which can effectively suppress the liquid separation phenomenon. Background technique [0002] As a new type of material, aluminum foam has excellent physical properties, chemical properties and mechanical properties, and is recyclable. The specific properties include light weight, high specific stiffness, good acoustic properties, excellent electromagnetic shielding properties, and good thermal properties. , high damping shock absorption performance and high impact energy absorption rate, etc., due to these excellent properties of aluminum foam, it has broad application prospects in today's material field, and is an engineering material with good development prospects, especially in transportation Applications in industry, aerospace industry and building structure industry. [0003] The performance of foamed alum...

AI Technical Summary

Problems solved by technology

[0003] The performance of foamed aluminum is mainly determined by its pore structure characteristics, and the pore structure characteristics mainly include pore size, pore shape and porosity. A large number of studies have shown that in the preparation process of foamed aluminum, the foam generated in the intermediate link is inevitably affected by gravity factors. Under the influence of gravity, the foam will appear liquid separation phenomenon. When the liquid separation phenomenon occurs, the bubble liquid film in the foam will be obviously thinner, and individual small bubbles will merge into large bubbles, and the bubbles in the melt There will also be uneven distribution, which will lead to the instability of the pore structure characteristics, and finally affect the material properties of foamed aluminum

Therefore, if a way to suppress the phenomenon of liquid separation cannot be found as soon as possible, it will seriously restrict the improvement of the performance of foamed aluminum materials.

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