Full hydraulic rolling type quenching system for ultrathin high-strength steel plate

Abstract

The invention belongs to the technical field of heat treatment of steel plates, and relates to a full hydraulic rolling type quenching system for an ultrathin high-strength steel plate. The system comprises a quenching rack and supporting system, a roller way and drive system, a water spray system, a hydraulic pressing system and a purging system. The quenching rack and supporting system realizesindependent pressing or lifting of more than two groups of independent quenching racks, the hydraulic pressing system is combined for servo control, a roll gap between an upper roller way and a lowerroller way and a pressing force during steel plate quenching are accurately controlled, and quenching deformation of the steel plate is restrained; and the water spray system is formed by more than two types of jet nozzles so as to form a forced cooling area and a low cooling area, and is combined with the purging system, so that steel plate surface flow zone control, orderly heat exchange controland quenching control according to a process path are realized. The full hydraulic rolling type quenching system for the ultrathin high-strength steel plate provided by the invention solves the problems of plate shape deterioration, nonuniformity in cooling, low final cooling temperature control accuracy and the like during an ultrathin high-strength steel plate quenching process, quenching production with high straightness and high uniformity is realized, and a post-quenching performance and performance uniformity of the ultrathin high-strength steel plate are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of steel plate heat treatment, and relates to a full-hydraulic rolling quenching system for an ultra-thin high-strength steel plate. Background technique [0002] Ultra-thin high-strength steel plates are key raw materials in equipment manufacturing, transportation, petrochemical, military and other fields, and are crucial to the development of large-scale and lightweight equipment. This kind of steel plate needs to be heat treated after rolling, and different heating and cooling systems are used to control the structure and shape of the steel plate to obtain better performance. Due to the advantages of high cooling strength, uniform quenching, high control precision and continuous production, the roller quenching machine has become the main quenching equipment for ultra-thin and high-strength steel plates. [0003] However, as the thickness of the steel plate is reduced to 2-4mm, the high cooling uniformit...

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Problems solved by technology

[0009] Aiming at the problems of poor uniformity and poor plate shape existing in quenching 2-4 mm ultra-thin high-strength steel plates by existing roll-type quenching machines, the purpose of the present invention is to provide a full-hydraulic roll-type quenching system for ultra-thin high-strength steel plates, which can meet such Fully hydraulic roller press quenching system for high uniformity and high flatness quenching of steel plates

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