Cooling device in t-bar hot-rolling line, and t-bar manufacturing facility and manufacturing method

A technology for manufacturing equipment and T-shaped steel, which is applied to workpiece cooling devices, manufacturing tools, metal rolling, etc., can solve problems such as hindering T-shaped steel, unable to solve cooling bending, etc., and achieve the effect of reducing equipment cost and simplifying equipment structure

Active Publication Date: 2014-09-17
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Due to the above reasons, in the conventional manufacturing method of T-shaped steel based on hot rolling, the problem of cooling bending due to the temperature difference between the flange and the web cannot be solved, and it hinders the manufacture of T-shaped steel by hot rolling.

Method used

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  • Cooling device in t-bar hot-rolling line, and t-bar manufacturing facility and manufacturing method
  • Cooling device in t-bar hot-rolling line, and t-bar manufacturing facility and manufacturing method
  • Cooling device in t-bar hot-rolling line, and t-bar manufacturing facility and manufacturing method

Examples

Experimental program
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Effect test

Embodiment

[0097] As a first example, using figure 1 The illustrated T-shaped steel manufacturing facility 1 rolls a T-shaped steel with target dimensions of web height 300 mm, flange width 100 mm, web thickness 9 mm, and flange thickness 16 mm from a steel ingot having a rectangular cross-section with a thickness of 250 mm and a width of 310 mm.

[0098] Such as figure 1 As shown, cooling devices 8, 9, 10 are provided before and after the intermediate rolling group 3 and in front of the finishing mill (universal finishing mill) 7. These cooling devices are arranged close to the outside of the rolling mill main body, and the distance D between the rolling mill main body and the cooling devices is 3 m. The spraying direction of the water-cooling nozzles (8a, 9a, etc.) on the outer surface of the flange is 10° downward relative to the horizontal direction. In addition, it is configured to be mounted on a side guide that guides the material H to be rolled to the side of the flange 22 of...

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Abstract

A cooling device (8) for a T-shaped steel hot-rolled production line capable of reducing the cooling bending caused by the temperature difference between the flange and the web as much as possible, comprising: a web (21) with a substantially T-shaped cross-section through water cooling and a convex The outer surface water-cooling nozzle (8a) for cooling the outer surface of the flange of the rolled material H formed by the edge (22); and / or the inner surface water-cooled nozzle for cooling the inner surface of the flange of the rolled material by water cooling. The outer surface water-cooling nozzle and / or the above-mentioned inner surface water-cooling nozzle are arranged at the following position and orientation, that is, when the web of the rolled material is inclined from a state that is substantially horizontal to the roller table (13) that conveys the rolled material to the web When the front end of the web is at the same height as the lower end of the flange, water can be injected into the outer surface and / or inner surface of the flange regardless of the inclination of the web.

Description

technical field [0001] The present invention relates to a cooling device, manufacturing equipment, and manufacturing method when manufacturing T-shaped steel (T-bar) by hot rolling. Background technique [0002] Figure 11 Indicates the cross-sectional shape of the T-shaped steel. The T-shaped steel 20 is a T-shaped section steel composed of a web (web) 21 and a flange (flange) 22 , and is widely used in fields such as shipbuilding and bridges. T-shaped steel is manufactured into finished products of various sizes according to its use, use conditions, use parts, etc. The size of T-shaped steel 20 commonly used is web height: about 200-1000mm, web thickness: about 8-25mm, web inner dimension: about 190-980mm, flange width: about 80-400mm, flange thickness: 12 ~ 40mm or so. In addition, in the case of T-shaped steel 20 used for shipbuilding, the height of the web is often more than twice the width of the flange. [0003] Generally speaking, the T-shaped steel 20 is manufac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B45/02B21B1/092
CPCB21B1/092B21B45/0215B21B45/0233B21B2045/0221
Inventor 高岛由纪雄高桥英树山口阳一郎中田直树
Owner JFE STEEL CORP
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