Deformed steel bar rolling method

The embodiment of the invention provides a deformed steel bar rolling method, the specification of rolled deformed steel bars is phi 12 deformed steel bars, or phi 14 deformed steel bars, or phi 16 deformed steel bars, or phi 18 deformed steel bars and phi 20 deformed steel bars, the deformed steel bar rolling method comprises the following steps: rolling the deformed steel bars with different specifications, and adopting the same rolling pass and pass structure for the first 18 rolling mills; and selecting special rolling passes and hole patterns from the nineteenth to twenty-fourth rolling mills so as to respectively roll the deformed steel bars with different specifications. According to the scheme, when deformed steel bars of different specifications are switched, hole pattern structures do not need to be replaced for the first 18 sorties of rolling mills, and the adjustment work of the 19-24 sorties of rolling mills is greatly reduced, so that the time required for adjustment is saved, and the working ef