A mold and production equipment for preparing foam sandwich panels

Abstract

The invention discloses a mold and production equipment for preparing foam sandwich panels. The mold includes a mandrel, a die fixing plate, a die, a punch and a punch fixing plate. Production equipment includes box furnace, tube furnace, stirring paddle, paddle lifting device, adjustable speed motor, temperature regulator for the first temperature zone, temperature regulator for the second temperature zone, temperature regulator for the third temperature zone, box type Furnace temperature regulator, cooling flow rate regulator, mold lifting device, resistance wire, mold, first temperature zone baffle plate, second temperature zone baffle plate, third temperature zone baffle plate. On the basis of the melt foaming method, the present invention realizes one-time molding of closed-cell foam metal sandwich panels by controlling the surface temperature and internal temperature of the melt; For the production of sandwich panels, the production of sandwich panels with different thicknesses can be realized by adjusting the thickness of the gasket between the punch and the die.

Description

technical field [0001] The invention relates to the field of plate processing, in particular to a mold and production equipment for preparing foam sandwich panels. Background technique [0002] Metal foam is a porous metal material that forms countless three-dimensional space network structures in the metal matrix. It has both metal properties and some special physical properties of non-metals. It is a structure-function integrated material with low density and high density. Porosity and other characteristics, its performance has high specific strength, energy absorption, electromagnetic shielding, structural damping performance, etc., it is an optional material for different structural instruments and devices, and has been widely used in the fields of automobiles, construction, aerospace, but metal foam At the same time, there are some shortcomings such as rough surface, low surface elastic modulus, and low assembly performance, which limit its application. [0003] Foam s...

AI Technical Summary

Problems solved by technology

The preparation of the sandwich plate with metal foam as the sandwich material is mainly through the following methods: one is to put the metal powder, the mixed powder of the metal powder and the foaming agent, and the metal powder into the mold in sequence, and heat it to generate heat by hot pressing or other methods. Foam to obtain metal foam sandwich panels, but the cost of the mold used in this method is relatively high, and the requirements for the uniformity and purity of the metal powder are relatively high

The second is to use hot pressing, rolling and other methods to obtain the composite material of metal plate-foam metal prefabricated plate and then foam it. However, because the surface of the foam metal has a porous structure, the interface bonding is not high, the life of the plate is reduced, and the surface cannot be damaged. The size of the metal sheet is effectively controlled, and the above two methods belong to the powder metallurgy method

The disadvantage of this preparation method is that the pipe needs to be cleaned before compounding, and it cannot be formed at one time. The process is more complicated, the cost is higher, and the composition of the metal plate and the sandwich layer is inconsistent, and it is easy to produce stress concentration during use and affect the service life.

Images