Method for preparing metal honeycomb core and honeycomb sandwich board

Abstract

The invention discloses a method for preparing a metal honeycomb core and honeycomb sandwich board. Aluminum, stainless steel and copper honeycomb core and honeycomb boards are prepared by using a brazing filler metal brazing method; according to the invention, a prepared product joint can form a metallurgical structure, which can be secondarily welded, can be machined and is featured with light weight, high strength, large rigidity, good stability, heat and sound insulation properties and no pollution; and the defect that the performance of an adhesive greatly influences the traditional adhesive honeycomb board honeycomb core is overcome; the mechanical property of the metal honeycomb core and honeycomb sandwich board is far higher than that of an adhesive material; moreover, a preparation process and operation means are simpler; all the performances are obviously improved; and the method for preparing the metal honeycomb core and honeycomb sandwich board, disclosed by the invention, is suitable for industrial production.

Description

technical field [0001] The invention relates to a technology for preparing a metal sandwich plate, in particular to a method for preparing a metal honeycomb core material and a honeycomb sandwich plate. Background technique [0002] Metal honeycomb panels have been widely used in aerospace, aircraft, trains, ships, construction and other fields due to a series of advantages such as light weight, high specific strength, high rigidity, good stability, heat insulation and sound insulation, and no pollution. At present, the common honeycomb panels at home and abroad, whether it is the core material itself or the composite between the panel and the core material, are all glued, and the connection method is physical combination. Its strength, service life and allowable working environment are largely affected. Adhesive performance constraints. For example, in the working environment with high humidity, frequent vibration (including alternating positive and negative air pressure),...

AI Technical Summary

Problems solved by technology

For example, in the working environment with high humidity, frequent vibration (including alternating positive and negative air pressure), high or low temperature, the panel is easy to degumming, resulting in the load during use is far less than the material used. Failure due to yield limit, lower mechanical properties

Solving the combination between metal honeycomb cores and between honeycomb cores and metal panels is the key to improving the mechanical properties of metal honeycomb panels, but it is very limited to achieve a leap in the performance of honeycomb panels only through the improvement and improvement of adhesive properties

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