Plate-and-strip online heating device used in rolling process of magnesium alloy

Abstract

The invention discloses a plate-and-strip online heating device used in the rolling process of magnesium alloy. The plate-and-strip online heating device comprises an induction heating device, a gas heating device and infrared thermometers which are installed at the rolling inlet and outlet positions of the magnesium alloy. The infrared thermometers are used for monitoring the online temperature of the magnesium alloy in real time and are further connected with a control system of the induction heating device and the gas heating device. The whole heating system can achieve closed-loop controlby setting a target temperature. The medium-frequency induction heating mode is adopted in the induction heating device, and the induction heating device comprises a frequency conversion device, an induction heating furnace body and a furnace front control device. The gas heating device comprises a combustion chamber, an ignition electrode, an ignition control system and a gas distributing cylinder. The induction heating furnace body and the gas heating combustion chamber are distributed up and down. Magnesium alloy plates and strips to be rolled penetrate through the gap between the inductionheating furnace body and the combustion chamber and further enter rollers for rolling. By means of the plate-and-strip online heating device, the magnesium alloy temperature can be controlled withinthe optimal rolling temperature range quickly and efficiently; and meanwhile, the temperature uniformity of the magnesium alloy plates and strips to be rolled can be improved, and the purpose of plateshape control is achieved.

Description

technical field [0001] The invention relates to processing equipment for magnesium alloy sheet rolling and forming, in particular to an on-line heating device for strips during magnesium alloy rolling. Background technique [0002] Magnesium alloy is the lightest metal among structural materials. In recent years, it has been gradually applied to fields such as aerospace, national defense and military industry, automobiles, and electronic communications. At the same time, the requirements for its performance and efficiency in these fields are also increasing. Traditional cast magnesium alloys have gradually failed to meet the requirements, and wrought magnesium alloy products produced by extrusion, forging, rolling and other processes have higher strength, better ductility, and more diverse mechanical properties. Among them, rolling, as an important means of plastic processing of magnesium alloys, has been greatly developed. [0003] Magnesium alloy has a close-packed hexago...

Images