Metal and polymer welding device and welding method

Abstract

The invention relates to a device and a method for welding metal and macromolecules. The device comprises an electric heating system, a pressure system, and a working platform (7), wherein a flat metal plate (6) to be welded is fixed onto the working platform (7); a flat macromolecule plate (4) to be welded is suspended above the flat metal plate (6) to be welded through the pressure system; the electric heating system heats the metal plate to be welded; and then the pressure system presses the flat macromolecule plate (4) onto the flat metal plate (6) so as to carry out welding. Compared withthe prior art, the device and the method for welding the metal and the macromolecules provided by the invention has the advantages that the downward pressing amount and the downward pressing depth inthe welding process can be accurately controlled; temperature and pressure data in the welding process can be accurately measured, pressure and temperature in the welding process can be automaticallyadjusted; the cooling speed in the post-welding process can be controlled, so that the strength of a connector for connecting macromolecule materials and the flat metal plate is improved; the environmental atmosphere in the preheating, welding and cooling process can be adjusted, and the oxydative degradation degree of the macromolecules is controlled; and the welding of the metal and the macromolecules in multiple modes such as a manual mode, a constant-pressure mode and a constant-temperature mode can be realized.

Description

technical field [0001] The invention relates to welding of dissimilar materials, in particular to a welding device and a welding method for polymer materials and metal materials. Background technique [0002] Polymer materials have the advantages of high specific strength, good fatigue resistance, low density, corrosion resistance, wear resistance and self-lubrication, high machinability and low cost, so they have been widely used in automobiles, machinery, aerospace, medical and other fields. Wide range of applications. However, compared with metal materials, it has disadvantages such as lower melting and degradation temperatures, insufficient mechanical properties, lower electrical and thermal conductivity, etc. At present, the composite use of metals and polymers is the mainstream, so polymers and polymers The effective connection of metals becomes a key issue. [0003] The connection methods of polymers and metals mainly include bonding, mechanical connection and weldi...

AI Technical Summary

Problems solved by technology

The patent of publication number CN 104228059B introduces a resistance welding device, which requires the use of additional thermoplastic adhesives, the pressure is manually applied, and cannot be accurately controlled, and the heating resistor needs to be placed between two composite material welding surfaces, and the heating element After welding, it still remains in the joint, which has a great impact on the welding quality

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