A weighing device is installed between the cutting of the fire cutting machine and the billet collection device, which is called weighing after cutting. This can effectively distinguish which flow the billet is produced from, and can provide feedback on the actual weighing after cutting.
At the same time, the target length deviation is automatically calculated by comparing the theoretical weight of the billet of this specification with the actual weight of the billet weighing. In this way, if the actual weight obtained is heavier than the estimated theoretical weight, the cutting length of the second billet is readjusted to make it shorter; if the actual weight obtained is lighter than the estimated theoretical weight, the cutting length of the second billet is readjusted to make it longer.
In order to further reduce costs, optimize indicators and fine management, the system solves the problem of reasonable tolerance rolling in steel mills, improves the yield rate and length rate of its products, and reduces production costs. Automatic length and weight intelligent cutting is one of the key links and effective means to achieve it.
The automatic length and weight intelligent cutting system of steel billets collects the image information of moving steel billets from a long distance through Ethernet infrared cameras, adopts image processing technology, identifies the length of hot steel billets online, and uses computers to process image information through pattern recognition programs and closed-loop feedback devices to achieve length and weight intelligent cutting, so as to improve the weight accuracy of billets.
After the transformation, each strand can be cut at a fixed time or in real time with a fixed weight, and automatically closed-loop control. At that time, each strand is transported to the rolling mill, which not only avoids the uneven length of the tail of the rolled material, the secondary transportation to the steel mill for recycling, but also avoids the waste of electricity, water, gas, and labor caused by the secondary recycling; it achieves high yield production and improves actual economic benefits.
Weighing and sizing system
Weighing and sizing is a system that automatically adjusts the length of the billet in a closed loop by combining a high-precision weighing system, a high-resolution digital camera sizing system, and an automatic billet stop and limit system to intelligently measure the billet weight.
Working principle of weighing and sizing
- The system uses advanced image processing technology (non-contact) to identify the length of hot steel billets online, automatically control the fire cutting machine to cut to length, and the detection of the billet is collected remotely by infrared camera.
- In the closed-loop state, the system performs fixed-weight self-learning mode cutting, and the weighing signal returns to the system in a closed loop for calculation, and the fixed-length length is fine-tuned online in real time according to weight; in the open-loop state, the system performs fixed-length cutting mode and can be adjusted manually.
Read More： Necessity of Billet Weight
