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过去建筑物的梁和柱大多采用焊接H型钢,而很少用轧制H型钢。这是因传统热轧H型热存在以下问题:由于轧制H型钢的万能轧机,其水平辊辊身长度固定不变,因此生产的H型钢的腹板内高是一定的,翼缘厚度规格岩不同,则腹板外高随之变化,给现场施工带来麻烦;从轧制性能上来看,不能使腹板厚度更薄,因此无法减轻建筑物钢骨架的重量。为解决这些问题,日本住友金属工业公司研究成功用
In the past, beams and columns of buildings used to weld H-beams mostly, but rarely used H-beams. This is because the traditional hot-rolled H-type heat has the following problems. Since the H-beam universal mill has a constant length of the horizontal roll barrel, the internal height of the H-section steel produced is constant and the flange thickness specification Different rock, then the outer web changes along with it, bringing trouble to the construction site; from the rolling point of view, can not make the web thinner, it can not reduce the weight of the building steel skeleton. In order to solve these problems, Japan’s Sumitomo Metal Industries Co., Ltd. successfully used