| 摘要 |
<p>Mechanical component (10) having an surface (10a, 10b, 12a, 12b) at least one part (18) of which has been surface hardened by induction heating. A cross section of the mechanical component (10) through the surface (10a, 10b, 12a, 12b) exhibits a hardness Hsurface at the surface (10a, 10b) and a hardness Hcore at the non-hardened core (10c) of the mechanical component (10). The hardness profile of the cross section exhibits a first region (24) whose hardness is substantially equal to the hardness Hsurface at the surface (10a, 10b), a third region (26) whose hardness is substantially equal to the hardness Hcore at the non-hardened core (10c) of the mechanical component (10) and a second region (25) between the first and third regions (26). The hardness profile in the first region has an average hardness Y1, and the hardness profile in the third region has an average hardness Y3. If a line is drawn on the hardness profile in the second region (25) between the points (formula) and (formula), where 0 <k< 2, the hardness of the mechanical component in the second region (25) determined along the line decreases by less than 50 HRC per mm.</p> |
