| 摘要 |
A process for manufacturing slewing rings or bearings-rings by centrifugally casting steel to cause the migration of iron particles toward the exterior region of the casting and carbon particles toward the interior region of the casting, and subsequently, quenching the casting to produce a higher degree of hardness to its' internal region relative to its' external region and a higher degree of toughness to its' external region relative to its' internal region. |
