Chromatized thread steel controlled rolling and controlled cooling equipment

Abstract

The invention discloses chromatized thread steel controlled rolling and controlled cooling equipment which comprises a water input pipe, spraying sets, a conveying portion and a water collecting portion. The spraying sets comprise a first section spraying set, a second section spraying set and a third section spraying set. The water input end of the first section spraying set is further connectedwith a first auxiliary water input pipe. The water input end of the second section spraying set is further connected with a second auxiliary water input pipe. The water collecting portion corresponding to the spraying sets in position is arranged below the spraying sets. The second water output pipe corresponding below the second section spraying set is connected with the first auxiliary water input pipe. A third water output pipe corresponding below the third section spraying set is connected with the first auxiliary water input pipe and the second auxiliary water input pipe. A water circulating structure is arranged in the chromatized thread steel controlled rolling and controlled cooling equipment, thus the water can be utilized in a circulating manner, the water conveying energy is reduced, energy is saved, and meanwhile, the equipment can be adjusted, is good in applicability and is particularly applicable to HRB400-Cr controlled rolling and controlled cooling.

Description

technical field [0001] The invention relates to the technical field of screw steel processing, in particular to controlled rolling and cooling equipment for chromium-added screw steel. Background technique [0002] The core of the controlled rolling and controlled cooling technology of steel is to improve the strength, toughness and welding performance of steel by controlling the heating temperature, rolling process, cooling conditions and other process parameters during the rolling process. Controlled cooling: by controlling the cooling conditions of the hot-rolled steel after rolling, the state of the austenite structure, the phase transformation conditions, the carbide precipitation behavior, and the structure and properties of the steel after phase transformation are controlled. [0003] In the controlled rolling and cooling control device of the prior art, the cooling control system part is a segmented cooling control structure, and the control cooling system for HRB400...

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Problems solved by technology

[0003] In the controlled rolling and cooling control device of the prior art, the cooling control system part is a segmented cooling control structure, and the control cooling system for HRB400-Cr is generally divided into the head and tail, the middle section, the tail end, and the cooling control system. Through cold water cooling, all cooling sections use water in the pool, and frequent transportation of water in the system consumes a lot of energy

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