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Hot rolled sheet strip liquid nitrogen ultrafast cooling device

An ultra-fast cooling and hot-rolled plate technology, which is applied in workpiece cooling devices, length measuring devices, metal rolling, etc., can solve the lack of theoretical and technical research on efficient and controllable liquid nitrogen cooling equipment, limit the application field of liquid nitrogen and process development Process, control difficulty and other problems, to achieve the effect of improving cooling efficiency and cooling control accuracy, improving detection accuracy and calculation accuracy, and optimizing cooling control parameters

Active Publication Date: 2019-04-19
北京秦冶众智科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of liquid nitrogen, it is very difficult to control its flow rate, pressure, temperature and gas-liquid phase. In addition, if the equipment or parts are large or irregular, the application of liquid nitrogen in a large area will bring great potential safety hazards, which largely limits the application field and process development process of liquid nitrogen
In the field of traditional heavy-duty machining, the application of liquid nitrogen is still rare, and there is also a lack of efficient and controllable liquid nitrogen cooling equipment and corresponding theoretical and technical research.

Method used

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  • Hot rolled sheet strip liquid nitrogen ultrafast cooling device
  • Hot rolled sheet strip liquid nitrogen ultrafast cooling device
  • Hot rolled sheet strip liquid nitrogen ultrafast cooling device

Examples

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Embodiment Construction

[0030] Exemplary embodiments, features, and performance aspects of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0031] Such as figure 1 with 2Shown, a kind of hot-rolled strip liquid nitrogen ultra-quick cooling device, it comprises thermometer, controller 15 and a plurality of cold section districts, a plurality of cold section districts are located in series between finishing mill 2 and coiler, The thermometers are respectively located between the finishing mill 2 and the cold section area and between the cold section area and the coiler. The cold section area includes an upper cooling device 4 and a lower cooling device 5 symmetrically arranged on both sides of the strip. The arra...

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Abstract

The invention relates to a hot rolled sheet strip liquid nitrogen ultrafast cooling device. The hot rolled sheet strip liquid nitrogen ultrafast cooling device comprises thermo detectors, a controllerand a plurality of cooling sections connected between a finishing mill and a winding machine in series; the thermo detectors are located before an outlet of the finishing mill and the winding machine; each cooling section comprises an upper controlled cooling device and a lower controlled cooling device which are arranged on the two sides of a sheet strip, and the upper controlled cooling deviceand the lower controlled cooling device each comprise a controlled cooling transverse beam guide rail, a guide rail type supporting frame, slice nozzle assemblies, pressure nozzles, a displacement cylinder, a liquid nitrogen container, an infrared temperature measurement device and solenoid valves; the guide rail type supporting frames are slidably connected with the controlled cooling transversebeam guide rails and pushed by the displacement cylinders to move in the rolling direction; the multiple slice nozzle assemblies are fixed to the guide rail type supporting frames in the rolling direction, a plurality of pressure nozzles are fixed to the slice nozzle assemblies, inclined angles are formed between the nozzles and the rolling direction of the sheet strip, and the nozzles are connected with the liquid nitrogen containers through powder heat insulated pipes; the solenoid valves are arranged on the pressure nozzles and connected with the controller; and the two ends of the coolingsections are provided with the infrared temperature measurement devices.

Description

technical field [0001] The invention belongs to the technical field of automatic measurement and control of rolling equipment, and in particular relates to a liquid nitrogen ultra-fast cooling device for hot-rolled strips. Background technique [0002] With the acceleration of the industrialization process and the continuous subdivision of the deep processing industry, various fields such as aviation, aerospace, navigation, chemical industry, bridges, automobiles, construction, etc. have more specific requirements for performance indicators such as hardness, strength, fracture, toughness, and elongation of the strip. and specialization. For hot-rolled strips, the temperature not only affects the three-dimensional deformation law of the entire rolling process, but also in the long-distance cooling stage after rolling, different cooling rates or cooling control methods will directly affect the metallographic structure and shape of the final strip. Therefore, controlled coolin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02B21B37/74B21B38/00
CPCB21B37/74B21B38/006B21B45/0218B21B45/0233
Inventor 杨利坡刘耕良商好强刘树光张永顺于华鑫
Owner 北京秦冶众智科技有限公司
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