Defective front and back end shapes formed during the reversible multi-pass hot rolling process lead to significant cropping losses.
The present invention aims to reduce cropping losses in reversible multi-pass hot rolling of flat-ended blooms into bars by designing preform end shapes using finite element analysis. A three-dimensional simulation predicted defective end shapes after rolling, similar to actual observations. Reverse material tracking was applied to finite element simulations to determine approximate preform end shapes, which were then used in further simulations. The results showed a considerable reduction in cropping losses.
- Utilization of three-dimensional finite element analysis to simulate reversible multi-pass hot rolling
- Application of reverse material tracking to identify and design preform end shapes
- Iterative process to refine preform shapes, leading to reduced end defects and cropping losses
- Significant reduction in cropping losses (up to 87.3% reduction)
- Improved yield and reduced waste in metal forming processes
- Potential for substantial material and monetary savings
A three-dimensional model of the bloom with preform end shapes was created and simulated through 15 passes, showing reduced end defects and cropping losses.
The technology has been simulated and tested, demonstrating its effectiveness in reducing cropping losses. Further iterations and optimizations are possible for even better results.
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This technology reduces material waste in steel manufacturing, promoting sustainability and more efficient resource use. It lowers production costs, potentially reducing consumer prices, and supports environmental conservation by minimizing the industry's footprint.
Steel manufacturing, Metal forming and processing
- Steel manufacturing and processing industries
- Hot rolling mills producing bars from blooms
712/MUM/2012
446401