EP0057385B1 - Verfahren zur direkten elektrischen Widerstandserwärmung von metallischen Werkstücken - Google Patents
Verfahren zur direkten elektrischen Widerstandserwärmung von metallischen Werkstücken Download PDFInfo
- Publication number
- EP0057385B1 EP0057385B1 EP82100407A EP82100407A EP0057385B1 EP 0057385 B1 EP0057385 B1 EP 0057385B1 EP 82100407 A EP82100407 A EP 82100407A EP 82100407 A EP82100407 A EP 82100407A EP 0057385 B1 EP0057385 B1 EP 0057385B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- periods
- resistance heating
- temperature
- workpiece
- current flow
- 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
-
- 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, in which, in addition, the temperature is influenced in certain time segments perpendicular to the direction of current flow by means of energy from the outside.
- the surface temperature of the workpiece that has been established has basically been used to determine the electrical parameters (current, voltage) 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 (US Pat. No. 1,704,036).
- 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 to produce a temperature distribution optimally adapted to the end purpose 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 to influence the temperature distribution.
- the object is achieved in that defined energy offers act on the metallic workpiece so briefly that there is no temperature compensation over the cross-section of the workpiece within these time periods of the additional energy offers, as a result of which the temperature distribution in the workpiece arises unevenly perpendicular to the direction of current flow.
- the time periods of the additional energy offers from the outside are before the resistance heating of the workpiece is initiated.
- these periods of additional temperature influence can also lie within the periods of direct electrical resistance heating of the workpiece or before and within the periods of resistance heating.
- the additional energy offers are provided by temperature supply and / or temperature dissipation.
- the surface temperature is warmed to a depth of 0.5 mm to 200 ° C by an external heating device in the form of a cylindrical, electrically heated high-performance furnace.
- an external heating device in the form of a cylindrical, electrically heated high-performance furnace.
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)
- Furnace Details (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Resistance Heating (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 EP0057385A2 (de) | 1982-08-11 |
EP0057385A3 EP0057385A3 (en) | 1982-08-18 |
EP0057385B1 true EP0057385B1 (de) | 1986-08-27 |
Family
ID=5528914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82100407A Expired EP0057385B1 (de) | 1981-02-02 | 1982-01-21 | Verfahren zur direkten elektrischen Widerstandserwärmung von metallischen Werkstücken |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0057385B1 (ru) |
AT (1) | ATE21799T1 (ru) |
CS (1) | CS247109B1 (ru) |
DD (1) | DD160550A3 (ru) |
DE (1) | DE3272791D1 (ru) |
SU (1) | SU1446170A1 (ru) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0340747A3 (de) * | 1988-05-04 | 1990-06-06 | VEB Draht- und Seilwerk Rothenburg | Verfahren und Vorrichtung zur Verbesserung der Beschichtungsqualität beschichteter strangförmiger metallischer Güter |
WO2000074441A1 (en) * | 1999-06-01 | 2000-12-07 | Mehmet Terziakin | Instant heating process with electric current application to the workpiece for high strength metal forming |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1704036A (en) * | 1924-11-20 | 1929-03-05 | Electric Furnace Co | Annealing furnace |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1448787A (fr) * | 1964-12-18 | 1966-03-18 | Geoffroy Delore | Procédé et dispositif pour le recuit en continu des fils métalliques |
DE1583406C3 (de) * | 1967-11-15 | 1974-07-25 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Anordnung zum Wärmebehandeln 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/de not_active Expired
- 1982-01-21 DE DE8282100407T patent/DE3272791D1/de not_active Expired
- 1982-01-21 AT AT82100407T patent/ATE21799T1/de active
- 1982-02-10 CS CS82888A patent/CS247109B1/cs unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1704036A (en) * | 1924-11-20 | 1929-03-05 | Electric Furnace Co | Annealing furnace |
Also Published As
Publication number | Publication date |
---|---|
ATE21799T1 (de) | 1986-09-15 |
EP0057385A2 (de) | 1982-08-11 |
CS247109B1 (en) | 1986-11-13 |
DD160550A3 (de) | 1983-09-14 |
DE3272791D1 (en) | 1986-10-02 |
SU1446170A1 (ru) | 1988-12-23 |
EP0057385A3 (en) | 1982-08-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3703498A1 (de) | Verfahren zum beschichten nicht-metallischer elemente | |
DE1957539C3 (de) | Einrichtung zum Verschweißen der Anschlüsse von elektronischen Bauteilen in Miniaturausführung | |
EP0057385B1 (de) | Verfahren zur direkten elektrischen Widerstandserwärmung von metallischen Werkstücken | |
DE2935416A1 (de) | Verfahren zum gleichmaessigen beheizen eines glasstromes in einem speiser und einrichtung zur durchfuehrung dieses verfahrens | |
EP0270803A1 (de) | Lötspitze | |
WO1981001115A1 (en) | Process for welding pieces and apparatus for implementing such process | |
JPS57120046A (en) | Heater for piping | |
DE2310284C3 (de) | Verfahren zum elektrischem Aufbringen von Glasteilchen auf einen Körper aus Halbleitermaterial | |
DE826325C (de) | Elektrischer Widerstandstheizkoerper | |
AT389969B (de) | Vorrichtung zum induktiven erwaermen eines metallischen werkstueckes | |
DE2619306A1 (de) | Elektroschmelz-schweissverfahren mit vorwaermung der elektrode und schweisskopf zur durchfuehrung des verfahrens | |
DE874165C (de) | Verfahren zum Trocknen von bleiumpressten Kabeln | |
DE2510202C3 (de) | Vorrichtung zum Beheizen eines Ultraschall-Reinigungsbades | |
EP0207329A1 (de) | Verfahren und Vorrichtung zum Umwandeln elektrischer Energie in Wärmeenergie | |
DD144195A1 (de) | Elektrisch beheizte kochplatte mit vorrichtung zur verringerung des waermeuebergangswiderstandes | |
DE1690647C (de) | Vorrichtung zum Widerstandsschweissen von mit Isolierstoff umgebenen Metallen, insbesondere isolierten Drähten | |
DE379686C (de) | Anode mit groesserer Metallmasse fuer elektrische Entladungsgefaesse | |
DE566925C (de) | Verfahren zum Betrieb elektrischer Induktionsoefen | |
DE838337C (de) | Verfahren zur Herstellung von Heissleitern bestimmter elektrischer Charakeristik | |
DE880017C (de) | Verfahren zur Herstellung heissgepresster Metallgraphitbuersten | |
DE322704C (de) | Verfahren zum Betriebe elektrischer Ringoefen oder Tunneloefen | |
DE1045668B (de) | Verfahren und Anordnung zum Brennen der Verbindungsmasse zwischen vorgebrannten Kunstkohlekoerpern | |
AT94976B (de) | Verfahren zum Schmelzen von Metallen mit hohem Wärmeleitvermögen, insbesondere zum Zusammenschmelzen von Kupfer und Zink zu Messing im elektrischen Lichtbogenofen. | |
DE620009C (de) | Elektrischer Ofen fuer hohe Temperatur | |
DE2628214C3 (de) | Verfahren zum Betrieb einer Niederdrucknatriumdampfentladungslampe und Schaltungsanordnung zur Durchführung des Verfahrens |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE DE FR LU NL |
|
AK | Designated contracting states |
Designated state(s): AT BE DE FR LU NL |
|
EL | Fr: translation of claims filed | ||
17P | Request for examination filed |
Effective date: 19821229 |
|
TCNL | Nl: translation of patent claims filed | ||
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE FR LU NL |
|
REF | Corresponds to: |
Ref document number: 21799 Country of ref document: AT Date of ref document: 19860915 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3272791 Country of ref document: DE Date of ref document: 19861002 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19870131 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19890131 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19891228 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19891229 Year of fee payment: 9 Ref country code: LU Payment date: 19891229 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19900312 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19900620 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19910121 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19910131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19910801 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19910930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19911001 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |