Steel pipe cooling device to prevent water from entering the inner wall of the pipe

Abstract

The invention discloses a steel pipe cooling device for prevention of water induction into pipe inner wall, which belongs to the technical field of metallurgy. The steel pipe cooling device for prevention of water induction into pipe inner wall compromises a circular water ring and a plurality of spray devices which is evenly arranged on the inner circumference of the water ring. The spray device compromises a frame, a nozzle, a connecting rod, a swing arm and a reset spring. One end of the swing arm and the central area of the nozzle are hinged to the frame. The connecting rod is fixedly connected with one end of the swing arm and the central area of the nozzle to form a link mechanism. The reset spring is connected with the frame and the nozzle. One end of a plurality of nozzles is communicated with a water chamber of the water ring, and the other end is close to the center of the steel pipe to form a first inlet of the steel pipe. The other end of a plurality of swing arms is close to the center of the steel pipe to form a second inlet of the steel pipe. The steel pipe cooling device for prevention of water induction into pipe inner wall achieves the automatic reverse swing of the nozzle in the cooling process of steel pipe through four link mechanism, prevents the water induction of a steel pipe head and a tail inner wall, and improves the longitudinal cooling uniformity.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a cooling device capable of preventing water from entering the inner wall of a steel pipe. Background technique [0002] The controlled rolling and controlled cooling process is an effective and economical technical means to improve the performance of steel materials. For the production of steel pipes, the online water cooling method is adopted after the rolling mill to achieve grain refinement and phase transformation by controlling the cooling path after rolling. Strengthening can achieve the purpose of improving the strength and toughness of the steel pipe and reducing the cost of the alloy. However, due to the special product shape of the steel pipe, the uniformity of cooling in the circumferential and longitudinal directions of the steel pipe has always been a problem, which is mainly restricted by the following two aspects. The falling water will affect the ...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a steel pipe cooling device that prevents water from entering the inner wall of the pipe. The circumferential nozzle can swing back and forth along the direction of steel pipe travel, which can effectively solve the problems of water entering the head of the steel pipe and water entering the tail after passing through. problem, improve the uniformity of cooling in the longitudinal direction of the steel pipe

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