Study on the influence of continuous casting billet temperature on rebar properties under direct rolling condition
In the process of DROF,it is large for the temperature drop of continuous casting billet in the casting and conveying process,which leads to the fluctuation of product performance.In this paper,the temperature field and temperature drop process of continuous casting billet were compared and analyzed,and the microstructure and mechanical properties of φ25 hot rolled ribbed bar were studied by rapid direct rolling and heat preservation direct rolling.The results show that the heat preservation process plays an important role in reducing the temperature fluctuation of the billet.Although the strength index of the product after rapid direct rolling is higher than that of the heat preservation direct rolling process,the fluctuation is large and the stability is poor.Along the direction of billet rolling,the strength index of the product is higher at both ends and lower in the middle.Therefore,in order to stabilize and control the performance of the product,the heat preservation direct rolling process is more beneficial to the production of anti-seismic rebar products,and a new process solution is proposed.
DROFdirect rolling without heatingtemperature fielddirect rolling
NETL
NSTL
万方数据
