The essence of 5G is a connection technology, which is characterized by one high (high reliability) , two low (low power consumption and low delay) , three large (large capacity, large coverage and large connection) . It not only connects people and people, people and computers, people and things, machines and things, and connect to all kinds of applications. 5g enabled blockchain, artificial intelligence, big data and other technologies, to achieve a deeper integration of technology applications.

1.Chemical composition and classification of grades of processed copper and copper alloy products

Pure copper: 47 Grades (CU & GT; 99.7%) ; high copper: 59 Grades; Brass: 128 Grades (Cu-Zn) ; White Copper: 51 Grades (Cu-ni) ; Bronze: 58 Grades (Other) .

2.Advanced casting technology of copper alloy

LPROCAST and continuous casting, directional solidification technology, ultra-high temperature gradient directional solidification (ZMLMC) , electromagnetic constrained shaping directional solidification (DSEMS) , laser ultra-high temperature gradient rapid solidification (LRM) continuous directional solidification technology (OCC)

3.Advanced Copper Alloy processing technology

In order to analyze the relationship between strain rate and deformation temperature and strain rate sensitivity index, power dissipation efficiency and instability system, in a two-dimensional plane with the logarithm of strain rate and temperature as coordinates, transform A THREE-DIMENSIONAL GRAPH INTO A TWO-DIMENSIONAL CONTOUR MAP.

Extrusion temperature field: Peeling back extrusion, billet temperature 180 °C, 200-16 extrusion ratio 156, extrusion speed 1.5 mm/s. When the extrusion ratio is 20, some experiments on the extrusion process of bar are carried out under the same conditions as the above-mentioned simulation. As shown in figures 5.6 and 5.7, the surface quality of the extruded bar in the safe zone is good, the results show that the extrusion limit diagram can be used to design the extrusion process of zinc alloy bars. Conclusion: The extrusion limit diagram can be designed by the extrusion process of zinc alloy.

1. Material Research: Content: Research and development of WAAM special wire; objective: develop WAAM special wire according to Waam special requirement; 2. SHAPE CONTROL RESEARCH: Content: MULTI-DIMENSIONAL WAAM component forming control; objective: Improve Component Dimension precision and surface quality; 3. Controllability research: Content: MULTI-DIMENSIONAL WAAM component quality optimization; objective: Optimize Component Microstructure, improve mechanical properties;

4.New application scenario and technology of 5G communication

High strength and high conductivity Copper Alloy (Cu-Cr-Zr) ; High Elastic Copper Alloy Strip (Cu-Ni-Si) ; Ultra High Strength Copper Alloy (Cu-Ni-Sn, Cu-ti) ; high performance heat dissipation material (Cu-Ni-P) ; dispersion strengthened copper (Cu/Al2O3) ; ultra high conductivity copper composite (Cu/gr) ;

5.Conclusion

The application of digitalization and numerical simulation in copper alloy processing should be strengthened to establish a material-centered technological ecosystem. Strengthening basic research in the materials science and making breakthroughs in major scientific issues. Improve the comprehensive performance of materials, strengthen the cooperation of industrial chain. Adhere to the development principle of "one generation of materials, one generation of equipment" , correctly position the basic role of new materials in national economy and national defense construction. 

Source: Shanghai non-ferrous Metal Net

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