GB1020626A - Heat treatment of deep drawing steel - Google Patents
Heat treatment of deep drawing steelInfo
- Publication number
- GB1020626A GB1020626A GB339964A GB339964A GB1020626A GB 1020626 A GB1020626 A GB 1020626A GB 339964 A GB339964 A GB 339964A GB 339964 A GB339964 A GB 339964A GB 1020626 A GB1020626 A GB 1020626A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- staging
- steel
- rate
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0473—Final recrystallisation annealing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
A method of annealing aluminium killed steel comprises the steps of heating the steel at a rate of not less than 50 DEG C. per hour to a staging temperature below the recrystallization temperature and within a staging temperature zone of from 450-525 DEG C. causing the steel temperature to dwell in said staging zone at or above said staging temperature for a time of not less than 30 minutes and not more than 4 hours, then heating the steel to an annealing temperature within the range of from 600-750 DEG C. at a rate of not more than 150 Centigrade degrees per hour, holding the steel at the annealing temperature for a predetermined period and then allowing or causing the steel to cool to atmospheric temperature to produce an annealed steel. The time for which the steel is held at the staging temperature, is dependent upon the temperature chosen for staging; i.e. the time varies in accordance with a straight line law from 4 hours at a staging temperature of 450 DEG C. to 30 minutes at a staging temperature of 525 DEG C. Alternatively the staging period may be achieved by slowly heating the steel through a portion of the staging zone, having a span of at least 30 DEG C., at rate of 50 Centigrade degrees/hour or less.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU27781/63A AU268610B2 (en) | 1963-02-26 | Heat treatment of deep drawing steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1020626A true GB1020626A (en) | 1966-02-23 |
Family
ID=3716094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB339964A Expired GB1020626A (en) | 1963-02-26 | 1964-01-27 | Heat treatment of deep drawing steel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1020626A (en) |
-
1964
- 1964-01-27 GB GB339964A patent/GB1020626A/en not_active Expired
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