EP0057385A2 - Procédé de chauffage électrique résistant direct de pièces métalliques - Google Patents
Procédé de chauffage électrique résistant direct de pièces métalliques Download PDFInfo
- Publication number
- EP0057385A2 EP0057385A2 EP82100407A EP82100407A EP0057385A2 EP 0057385 A2 EP0057385 A2 EP 0057385A2 EP 82100407 A EP82100407 A EP 82100407A EP 82100407 A EP82100407 A EP 82100407A EP 0057385 A2 EP0057385 A2 EP 0057385A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- direct electrical
- workpiece
- electrical resistance
- resistance heating
- heating
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0004—Devices wherein the heating current flows through the material to be heated
- H05B3/0009—Devices wherein the heating current flows through the material to be heated the material to be heated being in motion
-
- 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
Definitions
- the invention relates to a method for the direct electrical resistance heating of metallic workpieces, wherein the temperature is influenced perpendicular to the direction of current flow.
- the surface temperature of the workpiece that has been established has basically been used to determine the electrical parameters without taking into account the temperature distribution perpendicular to the direction of current flow, which is the result of heating and radiation conditions. This applies to all known methods for the direct electrical resistance heating of metallic workpieces.
- the aim of the invention is to avoid the deficiencies of the prior art by using a method which enables the setting of targeted temperature distributions in a metallic workpiece perpendicular to the direction of current flow.
- the invention has for its object an opti the end purpose times adjusted temperature distribution perpendicular to the direction of current flow with direct electrical resistance heating of metallic workpieces, the dependence of the specific electrical resistance on the temperature being used in a targeted manner to influence the temperature distribution.
- this object is achieved in that the workpiece to be heated is first passed through n known heating and / or cooling devices (n 0 0), which cause an uneven temperature distribution in the workpiece perpendicular to the direction of current flow, that the workpiece is then in itself is heated in a known manner by means of direct electrical current passage, during the direct electrical resistance heating in the ezheating section on the workpiece m heating or cooling devices (m ⁇ 0) with defined energy offers per unit of time simultaneously or in succession, and so briefly that no temperature compensation over the cross section is possible, where m + n must be> 0.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Control Of Resistance Heating (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Resistance Heating (AREA)
- Furnace Details (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD227372 | 1981-02-02 | ||
DD81227372A DD160550A3 (de) | 1981-02-02 | 1981-02-02 | Verfahren zur direkten elektrischen widerstandserwaermung von metallischen werkstuecken |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0057385A2 true EP0057385A2 (fr) | 1982-08-11 |
EP0057385A3 EP0057385A3 (en) | 1982-08-18 |
EP0057385B1 EP0057385B1 (fr) | 1986-08-27 |
Family
ID=5528914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82100407A Expired EP0057385B1 (fr) | 1981-02-02 | 1982-01-21 | Procédé de chauffage électrique résistant direct de pièces métalliques |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0057385B1 (fr) |
AT (1) | ATE21799T1 (fr) |
CS (1) | CS247109B1 (fr) |
DD (1) | DD160550A3 (fr) |
DE (1) | DE3272791D1 (fr) |
SU (1) | SU1446170A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0340747A2 (fr) * | 1988-05-04 | 1989-11-08 | VEB Draht- und Seilwerk Rothenburg | Procédé et dispositif pour améliorer la qualité de l'enduction du matériau métallique en forme de barres |
WO2000074441A1 (fr) * | 1999-06-01 | 2000-12-07 | Mehmet Terziakin | Procede de chauffage instantane avec application de courant electrique a la piece dans une operation de formage de metaux a resistance elevee |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1704036A (en) * | 1924-11-20 | 1929-03-05 | Electric Furnace Co | Annealing furnace |
DE1483374A1 (de) * | 1964-12-18 | 1969-05-22 | Delore Sa Geoffroy | Verfahren und Vorrichtung zum kontinuierlichen Weichgluehen von Metalldraehten |
DE1583406A1 (de) * | 1967-11-15 | 1970-08-13 | Siemens Ag | Anordnung zum Waermebehandeln von Stranggut durch elektrische Widerstandserhitzung |
DE2538045A1 (de) * | 1975-08-27 | 1977-03-10 | Henrich Kg | Vorrichtung zum gleichzeitigen erwaermen und/oder gluehen von mehreren durch die vorrichtung laufenden strangfoermigen guetern |
-
1981
- 1981-02-02 DD DD81227372A patent/DD160550A3/de not_active IP Right Cessation
-
1982
- 1982-01-06 SU SU827772236A patent/SU1446170A1/ru active
- 1982-01-21 EP EP82100407A patent/EP0057385B1/fr not_active Expired
- 1982-01-21 AT AT82100407T patent/ATE21799T1/de active
- 1982-01-21 DE DE8282100407T patent/DE3272791D1/de not_active Expired
- 1982-02-10 CS CS82888A patent/CS247109B1/cs unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1704036A (en) * | 1924-11-20 | 1929-03-05 | Electric Furnace Co | Annealing furnace |
DE1483374A1 (de) * | 1964-12-18 | 1969-05-22 | Delore Sa Geoffroy | Verfahren und Vorrichtung zum kontinuierlichen Weichgluehen von Metalldraehten |
DE1583406A1 (de) * | 1967-11-15 | 1970-08-13 | Siemens Ag | Anordnung zum Waermebehandeln von Stranggut durch elektrische Widerstandserhitzung |
DE2538045A1 (de) * | 1975-08-27 | 1977-03-10 | Henrich Kg | Vorrichtung zum gleichzeitigen erwaermen und/oder gluehen von mehreren durch die vorrichtung laufenden strangfoermigen guetern |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0340747A2 (fr) * | 1988-05-04 | 1989-11-08 | VEB Draht- und Seilwerk Rothenburg | Procédé et dispositif pour améliorer la qualité de l'enduction du matériau métallique en forme de barres |
EP0340747A3 (fr) * | 1988-05-04 | 1990-06-06 | VEB Draht- und Seilwerk Rothenburg | Procédé et dispositif pour améliorer la qualité de l'enduction du matériau métallique en forme de barres |
WO2000074441A1 (fr) * | 1999-06-01 | 2000-12-07 | Mehmet Terziakin | Procede de chauffage instantane avec application de courant electrique a la piece dans une operation de formage de metaux a resistance elevee |
Also Published As
Publication number | Publication date |
---|---|
DD160550A3 (de) | 1983-09-14 |
CS247109B1 (en) | 1986-11-13 |
DE3272791D1 (en) | 1986-10-02 |
ATE21799T1 (de) | 1986-09-15 |
EP0057385B1 (fr) | 1986-08-27 |
EP0057385A3 (en) | 1982-08-18 |
SU1446170A1 (ru) | 1988-12-23 |
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