A method for forming and manufacturing non-equal-thickness u-ribs

Abstract

The invention discloses a production method for unequal thickness U rib formation. The production method comprises the steps of feeding, continuous hot forging deformation, roller type continuous cold bending deformation and shaping. The feeding means that plate materials of a steel plate is fed into a feeding roller. The continuous hot forging deformation means that the plate materials enable the upper portions of the side legs of a U rib to generate metal flow through the extrusion of an induction electric heating device and a hot forging roller die, the equal thickness changes to unequal thicknesses to form directly a groove shape, and the target plate materials are obtained. The roller type continuously cold bending deformation means that the target plate materials sequentially undergo the continuous cold bending deformation process to obtain continuous U rib products. The shaping means that the continuous U rib products are finished through a shaping paired roller die. Compared with traditional cross sections of the U ribs, the cross section of the unequal thickness U rib is better, the side leg portions are thickened, the thinning of transition fillet positions is reduced, and the self weight of a bridge is reduced. After the continuous hot forging formation, the groove shape is finished firstly, and the welding area can be increased; the continuous cold bending formation is performed, the product length can be determined arbitrarily, the uniformity of the products is good, the precision is high, and the quality is good.

Description

technical field [0001] The invention relates to a production method of steel structure building materials, in particular to a forming and manufacturing method of non-uniform-thickness U-ribs, belonging to the technical field of building material production. Background technique [0002] The manufacture of steel structures and its application in the construction industry has been rapidly developed, and has been widely used in factories, warehouses, gymnasiums, exhibition halls, supermarkets, multi-storey buildings and large-span structural buildings. The development of U ribs on steel bridge decks has also been greatly developed. In recent years, with the increase of investment in domestic infrastructure construction, the construction of steel structure bridges has flourished. The key to the construction of steel structure bridges lies in the application of long-span steel structure bridge deck girders. The domestic steel structure bridge manufacturing industry lacks special...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a non-equal-thickness U-rib forming manufacturing method with optimized product cross-section, reasonable deformation, stable quality and high production efficiency, so as to solve the problem of U-ribs in the prior art using a bending process and then milling grooves It leads to problems such as inconsistent bending dimensions, unclear stress release, unstable product quality, and small groove welding area.

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