| 摘要 |
PURPOSE:To make the operation on-line and to reduce the time required to descale a steel wire rod by mechanically breaking the scale on the rod at a restricted elongation percentage and by descaling the rod in a pickling bath contg. a monobasic acid, ferrous chloride and ferric sulfate. CONSTITUTION:A steel wire rod is passed through a roll bender, etc. and repeatedly subjected to bending and elongation at >=1% elongation percentage to mechanically break the scale. The rod is then passed through an acidic pickling soln. contg. a monobasic acid such as hydrochloric acid with 1wt%- the saturation concn., ferrous chlorde with 0.2wt%- the saturation concn. and ferric sulfate with 1%- the saturation concn. to carry out descaling by pickling. By this method the time required to descale the rod can be reduced. |
