Abstract
Hot pressing is considered for borided and unborided powder blanks. In the hot additional pressing of unborided steel compacts, protection from decarburization is required. The hot pressing of borided blanks should be conducted at 1200°C in the presence of liquid eutectic phase. This produces good quality in the borided layer. Cracks do not arise at the ends of the blanks. The cracks that arise on the side surfaces at the start of deformation are filled by liquid phase in the final stage. The best conditions have been established for heating the blanks made by solid-phase and liquid-phase boriding.
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