Preparation process for metal rubber damping sandwich plate based on vacuum electron beam welding

Abstract

The invention provides a preparation process for a metal rubber damping sandwich plate based on vacuum electron beam welding. The upper and lower panels of the sandwich plate are metal plates, and thecore material is the metal rubber with a space grid structure and woven by metal wires; the process is used for covering the plate on the surface of the metal rubber through a welding process so as to prepare high damping sandwich plate structure; the process comprises the following steps: A1. Cleaning the plate and core material through ultrasonic until the oxide and impurities at the welding surfaces of the plate and the core material are removed; A2. Assembling the plate and the core material, and fixing the plate and the core material through a welding jig to form a part to be welded, moving the part to be welded to a vacuum chamber, and pumping the vacuum chamber by an exhaust device; A3. After preheating the welding position between the panel plate and the core material, welding thewelding position by a vacuum electron beam welding machine, so that the plate is connected with the core material in a welding manner to form the sandwich plate. The preparation process can prepare the metal rubber damping sandwich plate through the electron beam welding method.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to the preparation technology of a metal rubber damping sandwich panel based on vacuum electron beam welding. Background technique [0002] With the development of industrial technologies such as aerospace, marine chemical industry and nuclear energy equipment, the requirements for the comprehensive performance of vibration-damping and buffering functional elastic structural materials are increasing. Complex service environments such as high and low temperature, heavy load impact, and salt spray have also improved the elastic damping performance of the material. The sandwich structure is composed of two thinner panels and a thicker lightweight porous core layer in the middle. It combines the excellent characteristics of the panels and the core layer, and has excellent properties such as light weight, high specific strength, high specific stiffness and impact resistance. . Under t...

AI Technical Summary

Problems solved by technology

[0004] 1) The metal damping sandwich panel is prepared by the adhesive method, which usually uses an adhesive to bond the solid metal panel and the core layer together in a large area, which has the problems of low bonding strength, poor high temperature resistance, and corrosion failure. Small capacity, easy to layer

[0005] 2) The metal damping sandwich panel is prepared by the bolt connection method, the interface bonding strength is low, the product specification is small, and the uneven force during work is prone to local failure, which greatly reduces the life of the sandwich panel

[0006] Both the adhesive method and the bolt connection are physical connection methods, the product stability is poor, and the use environment has certain limitations, which greatly limits the preparation of large-sized sandwich panels and their application in related fields.

Images