ES412418A1 - Quick heat treatment of steels - Google Patents
Quick heat treatment of steelsInfo
- Publication number
- ES412418A1 ES412418A1 ES412418A ES412418A ES412418A1 ES 412418 A1 ES412418 A1 ES 412418A1 ES 412418 A ES412418 A ES 412418A ES 412418 A ES412418 A ES 412418A ES 412418 A1 ES412418 A1 ES 412418A1
- Authority
- ES
- Spain
- Prior art keywords
- heat treatment
- temperature
- austenitic transformation
- steel
- steels
- 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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/40—Direct resistance heating
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 Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
An elongated steel workpiece is quickly heat treated in a single heat treatment, by passing it between spaced electrodes and applying a current to the steel between the electrodes thereby to heat it above the austenitic transformation temperature at a heating rate of at least 50 DEG per second, preferably 200 DEG to 100,000 DEG C. per second, holding it at such annealing temperature for at most 300 seconds, preferably 0.04 to 3 seconds, so as to recrystallize the ferrite while dissolving substantially none of the carbides. The annealing temperature is no more than 85% and preferably 50-75% of the melting temperature of the steel in Kelvin degrees. The material is then quenched below the austenitic transformation temperature to prevent austenitic transformation and carbide precipitation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HUPO000510 | 1972-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES412418A1 true ES412418A1 (en) | 1976-01-01 |
Family
ID=11000569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES412418A Expired ES412418A1 (en) | 1972-03-07 | 1973-03-07 | Quick heat treatment of steels |
Country Status (15)
Country | Link |
---|---|
US (1) | US3855013A (en) |
JP (1) | JPS49119A (en) |
AT (1) | AT343159B (en) |
AU (1) | AU5299773A (en) |
BE (1) | BE796418A (en) |
CS (1) | CS190402B2 (en) |
DD (1) | DD103461A5 (en) |
DE (1) | DE2311283A1 (en) |
ES (1) | ES412418A1 (en) |
FR (1) | FR2220585B1 (en) |
IT (1) | IT982872B (en) |
LU (1) | LU67168A1 (en) |
NL (1) | NL7303220A (en) |
SE (1) | SE396769B (en) |
ZA (1) | ZA731588B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5178733A (en) * | 1974-12-28 | 1976-07-08 | Kawasaki Steel Co | Takaijisokumitsudoo jusuruichihokoseidenjikohanno seizohoho |
US4040872A (en) * | 1976-04-16 | 1977-08-09 | Lasalle Steel Company | Process for strengthening of carbon steels |
US4457789A (en) * | 1979-11-09 | 1984-07-03 | Lasalle Steel Company | Process for annealing steels |
AU537333B2 (en) * | 1979-11-09 | 1984-06-21 | La Salle Steel Co. | Process for annealing steels |
US4791896A (en) * | 1982-07-29 | 1988-12-20 | Howard Bidwell | Water cooled scavenged crankcase type Otto internal combustion engine |
US4830683A (en) * | 1987-03-27 | 1989-05-16 | Mre Corporation | Apparatus for forming variable strength materials through rapid deformation and methods for use therein |
US4874644A (en) * | 1987-03-27 | 1989-10-17 | Mre Corporation | Variable strength materials formed through rapid deformation |
US20040024376A1 (en) * | 2001-01-24 | 2004-02-05 | The Procter & Gamble Company | Absorbent interlabial device |
DE10212819B4 (en) * | 2002-03-22 | 2004-07-08 | Benteler Automobiltechnik Gmbh | Process for the production of a metallic component |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2938820A (en) * | 1958-04-24 | 1960-05-31 | Selas Corp Of America | Method of spheroidizing steel by rapid heating |
GB877793A (en) * | 1959-01-07 | 1961-09-20 | British Iron Steel Research | Improved process of annealing low carbon steel |
BE624419A (en) * | 1961-11-07 | |||
GB1039354A (en) * | 1962-02-28 | 1966-08-17 | Yawata Iron & Steel Co | Short-time heat-treating process for steels |
US3551216A (en) * | 1967-11-23 | 1970-12-29 | Hoesch Ag Hauptverwaltung | Method of producing a steel packing strip of high strength |
US3591427A (en) * | 1969-07-25 | 1971-07-06 | United States Steel Corp | Method of processing steel sheet or strip |
US3692591A (en) * | 1970-08-31 | 1972-09-19 | United States Steel Corp | Method for effecting the rapid heat-treatment of steel plate |
-
1973
- 1973-03-01 SE SE7302933A patent/SE396769B/en unknown
- 1973-03-05 US US00337910A patent/US3855013A/en not_active Expired - Lifetime
- 1973-03-06 CS CS731617A patent/CS190402B2/en unknown
- 1973-03-06 FR FR7307996A patent/FR2220585B1/fr not_active Expired
- 1973-03-06 IT IT48614/73A patent/IT982872B/en active
- 1973-03-06 DD DD169238A patent/DD103461A5/xx unknown
- 1973-03-07 BE BE128497A patent/BE796418A/en unknown
- 1973-03-07 AU AU52997/73A patent/AU5299773A/en not_active Expired
- 1973-03-07 LU LU67168A patent/LU67168A1/xx unknown
- 1973-03-07 JP JP48026240A patent/JPS49119A/ja active Pending
- 1973-03-07 ZA ZA731588A patent/ZA731588B/en unknown
- 1973-03-07 DE DE19732311283 patent/DE2311283A1/en active Pending
- 1973-03-07 ES ES412418A patent/ES412418A1/en not_active Expired
- 1973-03-07 AT AT200973A patent/AT343159B/en not_active IP Right Cessation
- 1973-03-07 NL NL7303220A patent/NL7303220A/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FR2220585A1 (en) | 1974-10-04 |
CS190402B2 (en) | 1979-05-31 |
US3855013A (en) | 1974-12-17 |
ZA731588B (en) | 1973-11-28 |
DD103461A5 (en) | 1974-01-20 |
IT982872B (en) | 1974-10-21 |
ATA200973A (en) | 1977-09-15 |
NL7303220A (en) | 1973-09-11 |
DE2311283A1 (en) | 1973-09-20 |
AU5299773A (en) | 1974-09-12 |
JPS49119A (en) | 1974-01-05 |
SE396769B (en) | 1977-10-03 |
AT343159B (en) | 1978-05-10 |
FR2220585B1 (en) | 1977-02-04 |
BE796418A (en) | 1973-07-02 |
LU67168A1 (en) | 1973-05-22 |
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