Copper-aluminum composite plate made by explosive composite method
At present, there are many methods for producing metal copper-aluminum composite plates, which can be generally divided into three categories: solid-solid composite method, liquid-solid composite method and liquid-liquid composite method. Explosion composite method, extrusion composite method, explosion welding hot rolling method, rolling composite method, diffusion composite method, diffusion welding method, etc., all belong to solid-solid composite method; liquid-solid composite method includes composite casting method, reverse solidification method, spray composite method, brazing method, casting and rolling method, etc.; liquid-liquid composite method has fewer production methods, and currently only electromagnetic continuous casting is used to produce composite plates. After decades of research and practice in the metal composite plate industry, many research results have been achieved in the production methods of copper-aluminum bimetallic composite plates. Next, I will introduce the production of copper-aluminum composite plates by explosion composite method in detail.
Production of copper-aluminum composite plates by explosion composite method
This method uses explosives as the energy source. After the explosives are detonated, the explosives will accelerate themselves, transform into a stable explosion, and move forward at a certain speed. Under the pressure of shock waves and detonation products, the composite plate collides with the substrate at a certain angle, achieving metallurgical bonding between the substrate and the composite plate. The copper-aluminum composite plate produced by this method has the characteristics of high bonding strength and fast speed. When welding a few square meters of plates, the above process only takes a few thousandths of a second to complete. Therefore, the explosive composite method is particularly suitable for large-scale plate cladding of one metal and another metal, pipe-to-pipe welding, and welding of metals that are difficult or impossible to produce by other methods (differences in the melting points of the two metals, huge differences in thermal expansion coefficients, and huge differences in hardness).
The above advantages of the explosive composite method have special advantages for copper-aluminum bimetallic composite plates in many aspects. In addition, the explosive composite method can also achieve self-cleaning of the interface, simplify the production process, and greatly reduce the difficulty of composite. However, due to the different detonation positions, distances, charge forms, and propagation methods of the detonation wave, the composite rate is easy to reduce, the interface is easy to over-melt, and it is difficult to meet the technical requirements of composite rate and roughness to obtain higher welding quality. Since explosives are used as energy in the explosive composite method, people are more concerned about their safety, so the choice of factory location is also limited.
The above is an introduction to the manufacturing method of copper-aluminum composite panels compiled by the editor. I hope it can be helpful to everyone and allow everyone to have a further understanding and knowledge of copper-aluminum composite panels and their manufacturing processes.
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