A kind of manufacturing method of non-equal thickness u-rib

Abstract

The invention relates to a manufacturing method of a non-equal-thickness U rib. The manufacturing method includes the following steps of firstly, feeding; secondly, extrusion forming, wherein a steel plate material is subjected to cold extrusion through multiple forming units, the two ends of the plate material are thickened, groove shapes are directly formed, and the target plate material is obtained; thirdly, centering; fourthly, flattening; fifthly, centering; sixthly, bending, wherein the target plate material centered in the fifth step passes through multiple bending units, and a continuous U rib product is obtained; seventhly, shaping, wherein the continuous U rib product obtained in the sixth step is shaped through multiple shaping units; and eighthly, saw cutting. According to the manufacturing method of the non-equal-thickness U rib, the two ends of the plate material are extruded to form the groove shapes through multiple ways of forming, and then the plate material is bent, shaped and cut through a saw; a traditional milling or planing procedure is omitted, and production efficiency is improved; and in addition, the finally-formed product is in a more reasonable non-equal-thickness shape, the welding area of the product is increased, and the welding quality of the U rib can be easily improved.

Description

technical field [0001] The invention relates to a method for manufacturing U-ribs with non-uniform thickness, belonging to the technical field of steel structure 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 equipment, and the lack of auxiliary equipment in some auxiliary processes is commo...

AI Technical Summary

Problems solved by technology

According to the traditional process, the U rib is first bent and formed, and then the two sides are milled or planed separately. Not only the deformation is large, the product consistency is not enough, but also the efficiency is low, and the quality is difficult to guarantee.

Continuous cold-formation can be mass-produced, with high precision and small deformation. However, the difficulty of cold-formation of U ribs is that the plate is of equal thickness, and the welding cross-sectional area is small after edge milling.

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