Steel tube online cooling process control system and method

Abstract

The invention relates to online heat treatment technologies for steel tube production, in particular to a steel tube online cooling process control system and method. The steel tube online cooling process control method comprises the steps that the steel tube online cooling process control system receives steel tube original data and cooling target technological data which are sent by an upper computer system; and according to steel tube actually-measured data in the previous working procedure and through operation of a model comprising a presetting calculation module, a feedforward control module and a feedback control calculation module, a steel tube operation speed curve of an online cooling area, spraying ring configuration and the cooling water pressure and flow are set for a steel tube online cooling basic automation system, automatic control over the steel tube online cooling process is achieved, and accordingly precise temperature control over the final cooling temperature of the steel tube product is achieved. The steel tube online cooling process control system and method is used for automatic control over the cooling process of a steel tube online cooling production device, and the steel tube online cooling production device is arranged beside a main conveying roller way line behind a sizing mill parallelly.

Description

technical field [0001] The invention relates to on-line heat treatment technology for steel pipe production, in particular to a process control system and control method for on-line cooling of steel pipes. Background technique [0002] On-line cooling of a certain cooling rate range is implemented on hot-rolled seamless steel pipes, the purpose is to improve the strength and toughness of steel pipes, replace off-line heat treatment, simplify the process, reduce energy consumption, and reduce costs. [0003] For the production process of hot-rolled seamless steel pipes, considering the stability of the rolling line and the smoothness of production, in order to reduce the deformation resistance of metal materials in the process of pipe piercing and rolling deformation, the heating and forming process of the current pipe billet is usually required to be relatively high. within the temperature range. High-temperature heating and high-temperature deformation will make it difficu...

AI Technical Summary

Problems solved by technology

[0004] At present, some research institutions and manufacturers at home and abroad have carried out experimental research on controlled cooling of hot-rolled seamless steel pipes after rolling, but at present they mainly focus on the on-line normalization (heating) process and direct on-line quenching process. It is not used in large quantities on products, but only used for performance improvement of a small number of products, etc.

Images