The quality of high-strength steel in this production line has steadily improved24.11.08

The acid rolling operation area of the cold rolling plant closely focuses on the "high-quality" strategy, aiming at the welding difficulties and rolling instability in the production process of high-strength steel and ultra-high-strength steel, combining with each process to strengthen and improve the production control scheme of ultra-high-strength steel, optimize parameter control, improve the success rate of welding of the welding machine, process drawing and leveling machine parameters, optimize and cure the secondary parameters of the rolling mill, and other measures. Ensure the production and quality of high strength steel steady improvement.

In this operation area, we should strengthen the calibration and find the difference and optimize the control measures. After the raw materials are stored, they shall be stored in accordance with the unified specifications, and the quality of incoming materials shall be checked uniformly. Confirm the process parameters, equipment running status, raw material quality, raw material coiling temperature and other items according to the production line check item list to ensure that the raw material coil meets the online requirements. According to the amount of material, the special rolls required for the production of ultra-high strength steel are organized and planned in advance to ensure that the roll change requirements of the process are met.
Continuously optimize the production plan of ultra-high strength steel to ensure stable production. By strengthening prediction and prediction, the operation area implements accurate control, and carries out statistical analysis in pre-production preparation, tracking during production, and handling abnormal situations after production. According to the specifications, width of the roll use state to comb, adjust the roll configuration, improve the production of ultra-high strength steel roll preparation. By simulating the rolling of ultrahigh strength steel and optimizing the rolling down procedure, the key production data of different kinds of high strength steel, such as tension, bending and rolling channeling, are maintained to the two-level model.

In order to solve the problem that the welding seam of ultra-high strength steel 780DHD is broken several times in the rolling mill, the technicians can ensure the full welding seam by adjusting the nozzle Angle of the welding wheel and improving the cleanliness of the focusing mirror. At the same time, the transition process of steel grade is optimized and revised, and the deformation and belt breaking of ultra-high strength steel above 700MPa is effectively reduced.

The working area shall organize technical personnel

Track the ultra-high strength steel production process through the whole process

Strictly monitor welding and tension straightener parameters

Stable rolling and mold compensation and other processes of production

Ensure the quality of the production line is good

Since this year

The quality qualification rate of high strength steel in acid rolling production line continues to improve

Production increased by more than 3% year-on-year