Method for heat-treating steel material
US7767044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2006 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Dec 29, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B19/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is an efficient heat treatment method which can be performed in a short time. Specifically disclosed is a method for heat-treating a steel material wherein a plastically deformed steel work is introduced into a heat treatment furnace when the work still retains the heat applied thereto during the plastic deformation, then the work is heated preferably at a heating rate of 15-50 DEG C./min and held at a temperature between Ac1 and Ac3 for 10 minutes or less, and then the work is slowly cooled at a cooling rate of 5-45 DEG C./min. This heat treatment method enables to easily produce a steel material having a uniform metal structure by simple facilities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.