Scale removing method of hot rolled steel strip

Abstract

Abstract PURPOSE: To remove scale at high efficiency with inexpensive equipment by performing mechanical descaling by the special method while cooling a metal strip of high temperature. CONSTITUTION: A hot rolled strip 2 of a high temperature state from an un-coiler 1 is cooled and is simultaneously subjected to mechanical descaling in a liquid honing unit 3. After it has passed through a post processing unit 4, it is taken up. As compared to conventional methods of descaling after cooling down to ordinary temperature, the rate of scale removal will be about twice higher. Cooling the strip with the cooling liquid from nozzles 6 and at the same time using a skin pass mill 7 and if necessary providing a descaling unit 8 may be employed for the abovementioned mechanical descaling unit. Also, a method of bending the strip in forward and backward directions with a bending unit 11 having a plurality of bending rollers 10 is equally well. As compared to conventional methods, the equipment is more inexpensive and the scale may be removed at higher efficiency. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Tomoaki Kimura
• 👤 Mitsuru Kubo

Bibliographic Details