1, The design features of roller hearth furnace heat-treat production line with nitrogen - based atmosphere are introduced.

2, Some heat damage is so severe that the heat-treat condition of material is altered adjacent areas.

3, The paper discusses the design of the heat-treat ballast - water system which is applied on ship.

4, Discovery relevance of an unexpected and intriguing new heat-treat phenomenon, connection or method.

5, Bearing cones must be annealed prior to machining and a subsequent post heat-treat hardening.