| 摘要 |
<p>Reduced decarburization production of steel is achieved by the process provided herein. It includes the step of preliminarily cleaning and roughing the exterior of a steel workpiece, and then applying an adherent removable protective surface coating of metal material onto the exterior of a steel workpiece to be heated, e.g., by providing a metallized, e.g., aluminized, adherent removable protection surface coating on that cleaned surface of the steel workpiece, Then the process involves carrying out such heating of the hereby protected steel workpiece, such heating including at least one hot working step, e.g., by heating for hot-working and/or annealing, e.g., of the semi-finished billet. Then the resultant metal material coating is removed. Novel metallized coating products are thereby fabricated. Thus, by this invention, an efficient and economical process for heating tool steel substantially protected against attendent decarburization during such heating is provided. This avoids the problems of conventional heating techniques.</p> |
