Metal composite plate processing technology based on PE physical micro-foaming technology

Abstract

The invention provides a metal composite plate processing technology based on a PE physical micro-foaming technology, and belongs to the technical field of machinery. The problem that an existing metal composite plate machining technology is not good is solved. The metal composite plate processing technology based on the PE physical micro-foaming technology comprises the following steps that PE raw materials and auxiliary materials are injected into a screw machine to be heated, fully stirred and melted, nitrogen is injected into the melted PE materials at high pressure, the PE raw materials injected with the nitrogen are subjected to constant-temperature stirring and foaming treatment, a square plate is formed through a die orifice assembly, and the square plate is subjected to heat preservation and heat preservation. The metal rolled plate and the polymer film are added to the two composite rollers together to form an upper base layer and a lower base layer, the square plate is injected between the upper base layer and the lower base layer, PE material waste heat is utilized for direct co-extrusion composite forming to form the metal composite plate, and after flattening and cooling, the two side edges of the metal composite plate are trimmed and cut into the specified size. The method has the advantages that the foaming rate of the metal composite plate is increased, foaming is more uniform and fine, and the production cost is reduced.

Description

Technical field [0001] The present invention belongs to the field of mechanical technology, relates to a metal composite plate, in particular to a metal composite plate processing process based on PE physical micro-foaming technology. Background [0002] Polyethylene referred to as PE is a thermoplastic resin made of ethylene by polymerization, metal composite plate has the advantages of light weight, strong stiffness, good heat insulation and sound insulation, etc., and these advantages mainly rely on countless pores on the metal composite board to achieve, widely used, the existing metal composite board includes the upper and lower base layers and the PE foam layer located between the two base layers, the base layer is composed of metal coil and polymer film, PE foam layer due to PE raw materials heating and stirring melting, And the base layer is compounded with the PE foam layer by melting the polymer membrane at a certain temperature. [0003] In the existing metal composite...

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Problems solved by technology

[0003] In the existing metal composite board processing technology, during the process from foaming PE raw materials to compounding with the base layer to form a metal composite board, the foaming rate of the PE foam layer is not high and the foaming is uneven. When performing composite molding, it is usually necessary to carry out secondary composite and secondary heating. The work efficiency is low, and the bonding strength between the metal composite panels is not enough, and the bonding is not tight enough, which greatly affects the quality of the metal composite panels.

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