EP1809775A2 - Vorrichtung zum kühlen von langen gegenständen - Google Patents
Vorrichtung zum kühlen von langen gegenständenInfo
- Publication number
- EP1809775A2 EP1809775A2 EP05797187A EP05797187A EP1809775A2 EP 1809775 A2 EP1809775 A2 EP 1809775A2 EP 05797187 A EP05797187 A EP 05797187A EP 05797187 A EP05797187 A EP 05797187A EP 1809775 A2 EP1809775 A2 EP 1809775A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- cooling
- diameter
- cladding tube
- nozzles
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 19
- 239000000112 cooling gas Substances 0.000 claims abstract description 5
- 238000005253 cladding Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 31
- 239000001307 helium Substances 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
Definitions
- the invention relates to a device for cooling long objects according to the preamble of claim 1.
- Long articles are understood to mean wires, tubes, rods, spring steels, plates and similar articles whose
- Length expansion is much greater than the dimensions in width and / or in height. In making (casting or drawing) such "endless" articles or after the heat treatment, rapid quenching is often required to suitably transform microstructures.
- the object of the invention is to propose a device with which long or endless objects can be gas-cooled reliably, quickly and economically. This object is achieved by a device with the features of claim 1. Embodiments of the invention are objects of dependent claims.
- the device according to the invention has two differently dimensioned chambers or regions, wherein in the first chamber (nozzle region) a plurality of nozzles are provided, which blow cold gas jets onto the object to be cooled.
- the second area (cladding tube) is relatively long and encloses the object to be cooled over a relatively long area.
- the gap formed between the object to be cooled and the inner wall of the cladding tube flows through the cold gas which has been sprayed from the nozzles towards the object and thus either further cools the article as the article moves or cools it in the direction of the gas when the direction of movement of the object is against the gas direction.
- the cross section of the cladding tube is adapted to the object to be cooled. If the object is round, the cladding tube is also cylindrical, rectangular in the case of rectangular bars. The cladding closely encloses the article so that the cooling gas is conducted close to the article.
- the invention may be located on one side of the nozzle portion, a sealing region which rests relatively close to the object to be cooled and prevents refrigerant gas escaping in this direction. This has the advantage that the cooling gas flows only in the preferred direction.
- the cladding tube has a smaller diameter than the nozzle area.
- N 2 , H 2 , helium or N 2 H 2 mixtures, N 2 -helium mixtures, H 2 -helium mixtures or ternary mixtures of N 2 , H 2 and helium are advantageous.
- the dimensions of the objects to be cooled can range from wires of about 1 mm in diameter to tubes of any diameter, that is from a few centimeters to a few meters in diameter.
- Starting temperatures can be in the range of 400 to 1400 0 C, wherein the starting temperature depends on the alloy and the requirements of quenching.
- the gas pressures during spraying can be between 0 and 10 bar.
- the nozzles for discharging the gas jets are preferably oriented so as to blow in the radial direction on the object to be cooled, so that the entire circumference of the object is uniformly applied.
- the preferred distance between the article to be cooled and the gas-carrying casing is chosen such that the gas velocity in the cladding tube gap is between one and ten meters per second (preferably between 3 and 6 m / s).
- the direction of the gas can run both with the product direction and against the product direction. If such a plant is connected to a heating furnace or to a device for casting, drawing or producing the metal, this object will always move in one direction. The gas may then flow parallel thereto or in the opposite direction. The gas flow in is preferred
- the gap between the cooling jacket and the object should not be so small that a considerable back pressure is created and the gas from flowing ⁇ prevents, so that a significant back pressure against the current flowing from the nozzle gas.
- the gas volume should be controlled so that the gas leaving the unit is not unduly hot.
- Turbulence generating units can be installed inside the pipe, which destroy the laminar flow, create turbulence and therefore lead to better cooling.
- Product speed reaches the intended final temperature of the product. This is possible due to greater length if a lower end temperature is desired.
- the figure shows schematically the object 2 to be cooled, in this case a rod or a tube, within the cooling device according to the invention.
- the cooling device according to the invention comprises a nozzle region 2 and a cladding tube 6, which adjoins the nozzle region 4, in the nozzle region 4, the nozzles 8 are shown schematically.
- a sealing region 10 connects, which rests relatively close to the object 2 and prevents leakage of the gas to the left.
- swirling elements 12 which may also extend over the entire circumference of the cladding tube.
- the object 2 to be cooled moves either from left to right or from right to left through the device according to the invention.
- cold gas is blown through the nozzles 8 onto the object 2.
- the object 2 cools strongly in the nozzle area 4.
- the gas then flows through the gap between the article 2 and the cladding tube 6 to the right, where it further cools the article 2.
- Preferred dimensions are:
- the length of the cladding tube is 2 to 50, preferably 30 to 50 times as large as its diameter, so for example between 0.1 and 1 m.
- the gaps between the object 2 and the cladding tube 6 are between 5 and 20 mm.
- the nozzle diameters are eg 1, 2 mm.
- the length of the nozzle area is a few centimeters to decimeters. For a good heat transfer coefficient, the following should apply:
- d 0, 1 to 0.2 x H preferably: d 0, 18 H and
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 Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004054627A DE102004054627A1 (de) | 2004-11-11 | 2004-11-11 | Vorrichtung zum Kühlen von langen Gegenständen |
| PCT/EP2005/011447 WO2006050814A2 (de) | 2004-11-11 | 2005-10-25 | Vorrichtung zum kühlen von langen gegenständen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1809775A2 true EP1809775A2 (de) | 2007-07-25 |
| EP1809775B1 EP1809775B1 (de) | 2009-01-14 |
Family
ID=35355624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05797187A Expired - Lifetime EP1809775B1 (de) | 2004-11-11 | 2005-10-25 | Vorrichtung zum kühlen von langen gegenständen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7497984B2 (de) |
| EP (1) | EP1809775B1 (de) |
| AT (1) | ATE420979T1 (de) |
| BR (1) | BRPI0517300B1 (de) |
| DE (2) | DE102004054627A1 (de) |
| ES (1) | ES2321120T3 (de) |
| WO (1) | WO2006050814A2 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9290823B2 (en) | 2010-02-23 | 2016-03-22 | Air Products And Chemicals, Inc. | Method of metal processing using cryogenic cooling |
| EP2933342A1 (de) * | 2014-04-15 | 2015-10-21 | Böhler-Uddeholm Precision Strip GmbH | Verfahren und Vorrichtung zur Herstellung eines Bandstahls mit bainitischer Gefügestruktur |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3675908A (en) * | 1971-01-04 | 1972-07-11 | Ajax Magnethermic Corp | Quenching device |
| JPS5767134A (en) * | 1980-10-09 | 1982-04-23 | Nippon Steel Corp | Method and installation for continuous annealing method of cold-rolled steel strip |
| DE3234863C2 (de) * | 1982-09-21 | 1986-04-10 | Messer Griesheim Gmbh, 6000 Frankfurt | Verfahren und Vorrichtung zum Blankglühen von metallischen Werkstücken mit Stickstoff als Schutzgas |
| US6656413B2 (en) * | 2001-06-21 | 2003-12-02 | Can-Eng Furnaces Ltd | Method and apparatus for quenching metal workpieces |
| FR2844809B1 (fr) * | 2002-09-20 | 2007-06-29 | Air Liquide | Procede de refroidissement rapide de pieces par transfert convectif et radiatif |
-
2004
- 2004-11-11 DE DE102004054627A patent/DE102004054627A1/de not_active Withdrawn
-
2005
- 2005-10-25 AT AT05797187T patent/ATE420979T1/de not_active IP Right Cessation
- 2005-10-25 BR BRPI0517300-0A patent/BRPI0517300B1/pt not_active IP Right Cessation
- 2005-10-25 ES ES05797187T patent/ES2321120T3/es not_active Expired - Lifetime
- 2005-10-25 DE DE502005006494T patent/DE502005006494D1/de not_active Expired - Lifetime
- 2005-10-25 WO PCT/EP2005/011447 patent/WO2006050814A2/de not_active Ceased
- 2005-10-25 EP EP05797187A patent/EP1809775B1/de not_active Expired - Lifetime
-
2007
- 2007-05-10 US US11/801,455 patent/US7497984B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006050814A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0517300A (pt) | 2008-10-07 |
| BRPI0517300B1 (pt) | 2014-11-04 |
| EP1809775B1 (de) | 2009-01-14 |
| WO2006050814A2 (de) | 2006-05-18 |
| ATE420979T1 (de) | 2009-01-15 |
| WO2006050814A3 (de) | 2007-12-13 |
| DE102004054627A1 (de) | 2006-05-18 |
| US20070289678A1 (en) | 2007-12-20 |
| ES2321120T3 (es) | 2009-06-02 |
| DE502005006494D1 (de) | 2009-03-05 |
| US7497984B2 (en) | 2009-03-03 |
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