A method for on-line transformation of rail foundation under furnace

Abstract

The invention relates to an under-furnace steel rail base on-line transformation method. The under-furnace steel rail base on-line transformation method comprises the steps that steel frames are manufactured in advance; an under-furnace steel rail base is hit downward to obtain a pit slot with the width of 380-420 mm and the depth of 250-300 mm; the interior of the pit slot is leveled with reinforced concrete, with the depth of elevation -0.39mm; the plurality of manufactured steel frames are laid in the pit slot, and after every two adjacent steel frames are welded stably, a plurality of passes of longitudinal steel bars are knitted on the steel frames; and after a grouting material is injected into the pit slot in which the steel frames are laid, 20 mm steel plates are laid on accordingto normal steel rail construction, phi 25-26 mm circular holes are formed in the parts, corresponding to positions where bolts are welded to the frames, are formed in the steel plates, and nuts are fastened and then welded with the steel plates for reinforcement. Under-furnace steel rail base on-line transformation is realized, the requirement on the limitation to the overhaul time can be met, thestrength of the embedded bolts can be improved, the damage to an base is minimum, production can be resumed as soon as possible by additionally finding welding positions on the steel frames if the bolts are damaged, and the construction time is short.

Description

technical field [0001] The invention relates to a rail foundation transformation technology, in particular to an online transformation method for a steel rail foundation under a furnace. Background technique [0002] The rail foundation of the steelmaking converter is usually made of reinforced concrete. Because of the original design, the 180-ton converter uses 3400mm gauge rails, so the rails are directly exposed outside the slope of the furnace. Due to the splash of the converter and the leakage of the water cooling parts And other reasons, it is very easy to cause foundation damage. Once the steel bar is damaged, the embedded bolts are burned or corroded, the entire steel rail under the furnace will no longer be restricted, and it is easy to cause accidents such as ladle transport vehicles and slag tank transport vehicles falling off the road. In daily production, thermal shutdowns and accidents caused by such reasons occur several times a year. Generally, similar prob...

AI Technical Summary

Problems solved by technology

Generally, similar problems are solved by cleaning the position of the embedded bolts and welding the new embedded bolts with the original steel bars. Not only the strength is poor, but also it cannot be treated for a long time.

The radical solution is to dismantle the original foundation and recast it, but due to the limitation of maintenance time, it cannot be realized at all.

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