Metal lightweight multilayer composite plate

Abstract

The invention relates to a metal lightweight multilayer composite plate, which comprises a first plate, a core plate and a second plate that are overlaid in order through bonding. The core plate is provided with several projections, the ends of which near the first plate are closed and the ends of which close to the second plate are in an openmouthed form. The specifications of the projections are smaller than the length-width specifications of the first plate and second plate, and the projections are hollow cylinders which have no contact among each other. The multilayer composite plate is characterized by high peeling strength. The outside of the first plate or second plate can also be overlaid with another core plate of the same structure and a third plate. Thus, the composite plate has strong bending stress on all directions. The projections can be spherical segment hollow cylinders or platform hollow cylinders, and the end face shape of the closing ends as well as the opening shape of the opening ends are both in elliptical. Cross sections of the projections are isosceles trapezoids with small closing ends and large opening ends. The composite plate of the invention has high production efficiency, high grade product rate, light unit area weight, low cost, and wide application field. The layouts and specifications of the projections are sufficient to make the composite plates non-permeable by light along the length-width directions. Thus, the bending stress on all directions of the composite plate can be further strengthened.

Description

technical field [0001] The invention relates to a metal lightweight multilayer composite board. Background technique [0002] At present, there are two kinds of metal composite panels. Among them, the structure of a metal composite panel is: it is composed of the first panel, the core panel of the honeycomb structure, and the second panel that are stacked sequentially by bonding, and the total thickness is 6 ~ 12mm, the bonded ends of the core board, the first board, and the second board are all open. The core board needs to be processed by precision machine tools, the production efficiency is low, and the price is relatively expensive. In order to avoid the shape of the bonded end of the core board from floating out on the first board and the second board, the first board and the second board need to use relatively high thick boards, so that the cost of metal composite boards is high; in addition, since the bonding ends of the core boards are all open, the bonding areas be...

AI Technical Summary

Problems solved by technology

When making the core board, it is difficult to control the radial and height dimensions of the crests and troughs, and the consistency of the crests and troughs is poor, resulting in a low yield and high cost of the metal composite board; in addition, the first board and the The crest bonding, the second plate and the trough bonding are all in line contact, and the bonding area is small. In addition, the consistency of each peak and each trough is poor, so the phenomenon of insufficient bonding often occurs, so that two adjacent The peel strength between the plates is poor; the composite plate only has a slightly stronger bending stress in the width direction, and the bending stress in the length direction is poor, making the application field of the metal composite plate relatively narrow

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