| 摘要 |
<p>A process for producing components made from austenitic-ferritic cast iron, also known as Austempered Ductile Iron (ADI), in which a pearlitic initial structure is converted to an austenitic-ferritic structure by a multi-stage heat treatment, in particular austempering. The components are surface-hardened at least partly (local/selective surface hardening) after the conversion to the austenitic-ferritic structure, e.g. by one of the local surface hardening methods known as induction hardening or electron-beam hardening. The components made by this process are used for many applications, in particular for gears of heavy machines.</p> |
