Passage System and Rolling Method of Narrow Flange Asymmetric Steel Track Beam Hot Rolling Mill
An asymmetric, track beam technology, applied in the direction of metal rolling, can solve the problems of poor welding quality and difficult processing, and achieve the effect of avoiding inaccurate precision, accurate size, and conducive to effective forming
Active Publication Date: 2021-08-03
河北津西钢板桩型钢科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a narrow-flange asymmetric steel track beam hot-rolling mill pass system and a rolling method using the pass system, so as to solve the problem in the prior art that the narrow-flange asymmetric steel is processed by welding. Technical problems of difficult processing and poor welding quality
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[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0031] Please also refer to Figure 1 to Figure 6 , the narrow flange asymmetric steel track beam hot rolling mill pass system provided by the present invention and the rolling method using the pass system will be described. The pass system of the narrow-flange asymmetric steel track beam hot rolling mill includes a preliminary rolling pass 100 and a rough rolling pass 200. The preliminary rolling pass 100 includes a first horizontal hole 110 and two first vertical holes 120; The first vertical holes 120 are respectively located at both ends of the first horizonta...
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Abstract
The present invention provides a pass system and rolling method for a narrow-flange asymmetrical section steel track beam hot rolling mill, which relates to the technical field of section steel rolling technology, including preliminary rolling pass and rough rolling pass, and the preliminary rolling pass includes the first One horizontal hole and two first vertical holes; the outer lower part of the first vertical hole is respectively provided with a first opening; the rough rolling pass includes a second horizontal hole and two second vertical holes; The ends are respectively provided with second openings. The narrow-flange asymmetric steel track beam hot-rolling mill pass system provided by the present invention uses the roughing pass to realize the limitation of the upper part height of the continuous casting slab and the effective extension of the lower part height, and uses the two first openings below to realize the waste The derivation of the rough rolling slab is obtained, and then the rough rolling pass is used to further reduce the wall thickness of the blooming slab. There are multiple second openings, which is beneficial to the effective forming of the outer end of the product. The product obtained by hot rolling has a large bearing capacity. , high strength and precise size advantages.
Description
technical field [0001] The invention belongs to the technical field of section steel rolling technology, and more specifically relates to a pass system of a narrow-flange asymmetrical section steel track beam hot rolling mill and a rolling method using the pass system. Background technique [0002] With the rapid development of transportation, rail transit, as a kind of public transportation, plays an increasingly important role in cities, and is an effective way to fundamentally improve the urban public transportation situation. Urban rail transit is usually powered by electric energy and adopts the method of wheel-rail transportation. It is a fast and large-capacity public transportation. The track beams used in rail transit are generally rolled by hot rolling process, and belong to a special section steel whose wall thickness and structure are different from traditional section steel. [0003] In the existing steel rolling production, what generally use is the section st...
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IPC IPC(8): B21B1/088
CPCB21B1/088
Inventor 纪建华马永福李升叶高旗纪广胜程新超李永锋温小杰杨雪松代永生郭利芝
Owner 河北津西钢板桩型钢科技有限公司