| 摘要 |
The present invention relates to a heat treatment method of a work roll for rolling which is used for rough-rolling bar steel and sectional steel, and which comprises: a step for heating a work roll made by casting up to a first preset temperature so that austenite is formed in the organization of the work roll; a step for maintaining the first preset temperature for a preset time for the formed austenite phase to be stabilized in the organization; a step for cooling down the work roll to a second preset temperature after the first preset temperature is maintained for the preset time; a step for maintaining the second preset temperature for a preset time after the cooling to the second preset temperature is finished; and a step for rapidly cooling the work roll below the temperature enough to have pealite formed in the organization of the work roll. [Reference numerals] (AA) Start;(BB) End;(S10) Heating a work roll to the first preset temperature which may form austenite;(S20) Maintaining the first preset temperature for the formed austenite phase to be stabilized in the organization;(S30) Cooling down the work roll up to the second preset temperature lower than the first preset temperature;(S40) Maintaining the second preset temperature for the preset time;(S50) Rapidly cooling the work roll below the temperature enough to have pearlite formed in the organization of the work roll |
