The invention discloses a ball flat
iron production technique, comprising steps of billet, heating, symmetrical rolling, straightening and
dissection. The invention is characterized in that the
dissection process is carried out after the processes of symmetric rolling and straightening; hole shapes in all the passages of a
rolling mill are constituted by two ball flat iron hole shapes which are symmetrically identical. By adopting the technique of symmetric rolling, the invention solves the problems that existing large and medium rolling mills can not produce small ball flat irons with symmetrical rolling and
dissection technology. The invention has the advantages of the small size fluctuation of profiles when producing, particularly the small size fluctuation of width, thickness, ball filling and the lower arc of the ball flat iron, rollers subject to uniform forces, easy control in rolling process, greatly reducing the scraping, the rolling mark and the
waves of the product by 50% to 70%, improving the quality of the product, enlarging the types of rolled products, leading large profiled bar
rolling mill to produce small ball flat iron, enlarging the profile of the billet, large corresponding
compression ratio, improving the comprehensive performance of the products, etc.