A method for the production of walzstaeben and - wires

摘要

PURPOSE:To perform the rolling work at high thermal efficiency to obtain bars or rods of excellent quality, by dividing the whole rolling process into suitable two processes, and by making the relation of these two processes semicontinuous. CONSTITUTION:The material 1, after being passed the heating furnace 2 and being rolled by the roughing mill 3 and the intermediate rolling mill 4, is split by the shear 5 and two split materials are separately coiled by the coilers 11, 12. The successively coiled coils are sent to the warming furnace 8 and are set in the uncoilers 21-24. Next, the coil is uncoiled and is sent to the pinch rolls serving also as the pretreating devices 31-34, and then, is sent to the finishing mill groups 51-54 for the second rolling process. After the finishing pass, the material is passed the controlled cooling passes 61-64 and 71-74, and is coiled by the final coilers 81-84. According to this method, the rolling line becomes concise, and the control of the finishing temperature becomes free. Besides, the high reduction of area can be effected in the first rolling pass.