Dalian Konform has developed new model TLJ630U continuous extrusion machine a few years ago. It extrudes U-shaped copper busbar (Maximum width is 450mm). After flattening and rolling, it can ultimately produce copper strip with Min thickness of 0.3mm. The advantages of continuous extrusion process to make copper strip are mainly in energy conservation, environmental protection, high material utilization, high production efficiency, and stable product performance.
1. Energy conservation and environmental protection
TLJ630U continuous extrusion machine adopts continuous extrusion and rolling technology, eliminating the heating, annealing, and pickling processes in traditional processing. It reduces energy consumption and pollutant emission.
2. High material utilization rate
By optimizing processing parameters, the material utilization rate can reach 88% -90%. It can significantly reduce raw material waste. For example, It requires multiple heat treatments traditional processing, while this technology achieves efficient utilization through the short process.
3. Outstanding production efficiency
It is fully automated production for TLJ630U continuous extrusion machine, output capacity up to 60 tons per day, greatly improve processing efficiency.
4. Stable product performance
After flattening, the crack on both side is very small, and the grain size of the copper strip is less than 80 microns, with uniform equiaxed grain structure. Its conductivity and corrosion resistance are better than traditional processes. For example, in application scenarios of new energy vehicle battery packs, higher reliability is demonstrated. The surface is not prone to defect such as peeling and burrs.
The variation laws of product speed, temperature, and block stress during the continuous extrusion process of U-shaped copper material were analyzed using Hyper Xtrude simulation software. The conclusion is that U-shaped products have uniform stress and longer tooling life.
The TLJ630 U shaped continuous extrusion machine which made by Dalian Konform has been widely used in copper strip product, replacing traditional horizontal casting and hot rolling process. It is currently the leading solution for producing wide and fine grained copper strip.