Uniform foaming and compositing technology for hard light composite material

Abstract

The invention discloses a uniform foaming and compositing technology for a hard light composite material. According to the technical scheme of the uniform foaming and compositing technology, a traditional metal foaming structure is changed, through the characteristic that the thermal conductivity of ceramic balls is poor, the ceramic balls with the surface internal temperature subjected to differential treatment are uniformly added into foamed aluminum, the ceramic balls enter a foaming melt with the cooling capacity, internal cooling of the melt is accelerated, and the difficult problem of melt foaming layering is solved; the uniformity of a foaming material is improved, the finished product rate of the foaming material is increased, and the product cost and price are greatly reduced; andthe spatial structure and three-dimensional supporting of the composite material are reinforced, and the indexes such as energy absorption density, the compressive yield strength, the noise reductioncoefficient and the thermal-insulating property of the foaming material are improved, so that the developed hard light composite material can be more advantageously applied and popularized.

Description

technical field [0001] The invention relates to the technical field of compounding of foamed metal and light non-metallic materials, in particular to a uniform foaming and compounding process of rigid light-weight composite materials. Background technique [0002] Porous metal foam material is composed of metal skeleton and pores, which is a kind of functional material developed in recent years. Since its inception, as a structural material, it has the characteristics of light weight and high specific strength; as a functional material, it has many advantages such as porous, vibration reduction, damping, sound absorption, sound insulation, fire prevention, moisture resistance, heat dissipation, impact energy absorption, electromagnetic shielding, etc. This kind of good physical properties, combined with its characteristics of easy processing, easy installation, surface coating and recycling, meets the needs of current development, and has been more and more widely used in ge...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the process defects existing in the prior art, the present invention proposes a process of using a metal cage to forcibly press and immerse lightweight foamed ceramic balls with a high temperature on the surface and a low temperature inside into the metal foaming melt for foaming and compounding. The process absorbs heat from the surrounding melt through the internal low-temperature ceramic balls to realize rapid cooling of the melt from the inside, reduce the fluidity of the melt, and control the upward floating of the bubbles generated by the foaming agent, which solves the problem caused by the gradient change of the melt foaming. Uniformity is difficult. At the same time, the ceramic balls can be densely packed and arranged regularly under the constraint of the metal cage, so that the metal can be foamed with high uniformity and evenly combined with the ceramic balls to form a hard and light-weight composite material.