We all know that the I-beam can be divided into hot-rolled I-beam and cold-rolled I-beam two.Now with the progress of production technology, I-beam processing technology is constantly increasing, and now can use the I-beam also has cold rolling and hot rolling of the points.But after these two kinds of technology to produce steel, what is the difference?
First, the free torsional stiffness of hot-rolled steel is higher than that of cold-rolled steel, so the torsion resistance of hot-rolled steel is better than that of cold-rolled steel.
Second, cold-rolled steel section allows partial buckling, which can make full use of the bearing capacity of the rod after buckling; and hot-rolled steel section does not allow partial buckling.
Third, the reasons for the different residual stress of hot-rolled I-beam and cold-rolled I-beam, so the distribution of cross-section is also very different.The residual stress distribution on the cold-formed thin-walled steel section is curved, while the residual stress distribution on the hot-rolled steel or welded steel section is thin-film.
With respect to the cold-rolled I-Steel for hot-rolled I-beam is heated by high temperature Rolling Steel, its strength is not very high, but enough to meet our use, its plasticity, weldability is better, so we in daily life is still more commonly used hot-rolled I-beam.
Well, the above is xiaobian to introduce you all about the difference between hot-rolled I-beam and cold-rolled I-beam, we must figure out when you buy, buy the products you need.
