SE528138C2 - Method and apparatus for heating elongated steel products - Google Patents
Method and apparatus for heating elongated steel productsInfo
- Publication number
- SE528138C2 SE528138C2 SE0402864A SE0402864A SE528138C2 SE 528138 C2 SE528138 C2 SE 528138C2 SE 0402864 A SE0402864 A SE 0402864A SE 0402864 A SE0402864 A SE 0402864A SE 528138 C2 SE528138 C2 SE 528138C2
- Authority
- SE
- Sweden
- Prior art keywords
- burner
- product
- oxidant
- fuel
- outlet opening
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
-
- 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
- C21D1/52—Methods of heating with flames
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details
- F23D14/48—Nozzles
- F23D14/56—Nozzles for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening or for heating workpieces
-
- 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
- C21D1/82—Descaling by thermal stresses
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Gas Burners (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
25 528 138 2 Föreliggande uppfinning löser dessa problem. The present invention solves these problems.
Föreliggande uppfinning hänför sig således till ett förfaran- de för värmning av làngsträckta stålprodukter, såsom rör, band- eller tràdformiga produkter eller stänger efter bear- betning såsom valsning eller tråddragning till en värmebe- handlingstemperatur, vanligen till omkring 50 till 900 grader C, där värmningen bringas att ske genom att produkten bringas att matas genom en brännare, vilken har en central genomgåen- de kanal, i vilken produkten matas och där bränsle och oxi- dant bringas att tillföras genom utanför nämnda centrala ka- nal förefintliga kanaler och utmärkes av, att bränsle och oxidant bringas att framatas med sådan hastighet att för- bränningen bringas att ske framför brännarens brännarhuvuds utloppsöppning av, att oxidanten bringas att innehålla åtmin- stone 85 volym% syre och av, att bränsle och oxidant tillfö- res i en vinkel av l till 90 grader mot produktens längdsaxel så att avlagringar, oljerester etc. förbränns och/eller blå- ses bort.The present invention thus relates to a process for heating elongate steel products, such as tubes, strip or wire-shaped products or bars, after processing such as rolling or wire drawing to a heat treatment temperature, usually to about 50 to 900 degrees C, where the heating is effected by feeding the product through a burner which has a central continuous channel in which the product is fed and where fuel and oxidant are supplied through channels present outside said central channel and are characterized by, that fuel and oxidant are brought forward at such a speed that the combustion is caused to take place in front of the burner head's outlet opening by the oxidant being caused to contain at least 85% by volume of oxygen and by the fact that fuel and oxidant are supplied at an angle of 1 to 90 degrees to the product's longitudinal axis so that deposits, oil residues, etc. are burned and / or blown away.
Uppfinningen hänför sig också till en anordning av det slag och med de huvudsakliga särdrag som anges i patentkravet 6.The invention also relates to a device of the type and with the main features stated in claim 6.
Nedan beskrivas uppfinningen närmare, delvis i samband med ett på bifogade ritning visat utföringsexempel av uppfinning- en, där - figur 1 visar ett snitt genom en brännare enligt före- liggande uppfinning.The invention is described in more detail below, partly in connection with an exemplary embodiment of the invention shown in the accompanying drawing, in which - figure 1 shows a section through a burner according to the present invention.
Föreliggande förfarande avser värmning av längsträckta stäl- produkter, såsom rör, band- eller trádformiga produkter eller stänger efter bearbetning såsom valsning eller tràddragning ht doc , 2006-06-21 10 15 20 25 528 138 till en värmebehandlingstemperatur, vanligen till omkring 50 till 900 grader C.The present process relates to heating elongate steel products, such as tubes, strip or wire products or bars, after processing such as rolling or wire drawing, to a heat treatment temperature, usually to about 50 to 900 ° C. grader C.
Enligt uppfinningen bringas värmningen att ske genom att pro- dukten bringas att matas genom en brännare. Brännaren har en central genomgående kanal i vilken produkten matas. Bränsle och oxidant bringas att tillföras genom utanför nämnda cen- trala kanal förefintliga kanaler. Enligt uppfinningen bringas vidare bränsle och oxidant att frammatas med sådan hastighet att förbränningen bringas att ske framför brännarens brännar- huvuds utloppsöppning- I figur l visas en anordning i form av en brännare 1 för värmning av långsträckta stålprodukter.According to the invention, the heating is effected by causing the product to be fed through a burner. The burner has a central continuous channel in which the product is fed. Fuel and oxidant are brought into supply through channels present outside the said central channel. According to the invention, further fuel and oxidant are brought forward at such a speed that the combustion is caused to take place in front of the burner head burner head outlet opening. Figure 1 shows a device in the form of a burner 1 for heating elongate steel products.
Brännaren l har en central genomgående kanal 2 anordnad för att mata produkten genom brännaren l. Kanalen 2 innefattar ett rör 3. Vidare förefinns kanaler 4, 5 i brännaren för 'tillförsel av bränsle 6 och oxidant 7, belägna utanför nämnda centrala kanal 2. Nämnda kanaler för tillförsel av bränsle och oxidant är enligt uppfinningen så anordnade att förbrän- ningen sker framför brännarens brännarhuvuds utloppsöppning.The burner 1 has a central continuous channel 2 arranged to feed the product through the burner 1. The channel 2 comprises a tube 3. Furthermore, channels 4, 5 are present in the burner for supplying fuel 6 and oxidant 7, located outside said central channel 2. channels for the supply of fuel and oxidant are according to the invention arranged so that the combustion takes place in front of the outlet opening of the burner head of the burner.
Materialet bringas enligt en föredragen utföringsform att matas genom brännaren motströms avgasströmen.According to a preferred embodiment, the material is fed through the burner countercurrent to the exhaust gas stream.
Materialet 9 matas genom brännaren 1 i pilens 10 riktning, medan avgaserna strömmar i pilens ll riktning. Förbränningen av bränslet sker således utanför brännarens 1 huvuds 12 öpp- ning 13. 10 15 25 528 138 4 Det är föredraget att bränsle och oxidant bringas att tillfö- ras i en vinkel av l till 90 grader mot produktens längdsax- el.The material 9 is fed through the burner 1 in the direction of the arrow 10, while the exhaust gases flow in the direction of the arrow 11. The combustion of the fuel thus takes place outside the opening 12 of the burner 1 head 13. It is preferred that fuel and oxidant be supplied at an angle of 1 to 90 degrees to the longitudinal axis of the product.
Enligt en föredragen utföringsform bringas flamman att bildas inuti ett flamrör 14 som sträcker sig ut från brännarens ut- loppsöppning 13 och koncentriskt med produktens transportba- na.According to a preferred embodiment, the flame is caused to form inside a flame tube 14 which extends from the outlet opening 13 of the burner and concentrically with the transport path of the product.
Genom att föra materialet genom brännaren säkerställs att den tillförda energin fördelas jämnt utmed den làngsträckta stål- ytans periferi; Värmningsintensiteten/värmningseffekten är stor i den första träffpunkten och avtar från brännarens mynning motströms materialet. Genom att anpassa längden på flamröret kan effekten av förvärmningen före den direkta träffen av flamman ("direct flame impingement”) varieras. Vad som varieras är flamtunnelns längd. Genom den àtercirkulation av avgaser som sker i flamtunneln kan förbränningsprocessen göras ”flamlös”.By passing the material through the burner, it is ensured that the supplied energy is evenly distributed along the periphery of the elongated steel surface; The heating intensity / heating effect is large at the first point of impact and decreases from the burner mouth towards the material. By adjusting the length of the flame tube, the effect of the preheating before the direct hit of the flame ("direct flame impingement") can be varied.
Enligt en annan föredragen utföringsform bringas oxidant och bränsle att matas ut från brännarens utloppsöppning 13 symf metriskt med avseende på produkten.According to another preferred embodiment, oxidant and fuel are caused to be discharged from the burner outlet opening 13 symmetrically with respect to the product.
Härvid är det föredraget att oxidant och bränsle bringas att matas ut från brännarens utloppsöppning jämnt fördelat längs produktens periferi.In this case, it is preferred that oxidant and fuel are brought out of the burner outlet opening evenly distributed along the periphery of the product.
Det är även föredraget att oxidanten bringas att innehålla åtminstone 85 volym% syre.It is also preferred that the oxidant be caused to contain at least 85% by volume of oxygen.
Genom den högre värmeöverföringen*förkortas värmningstiden för materialet i ugnen avsevärt, vilket medför att matnings- 10 15 25 528 158 5 hastigheten för materialet genom ugnen kan ökas betydligt vid en given ugn.Due to the higher heat transfer *, the heating time of the material in the furnace is considerably shortened, which means that the feed rate of the material through the furnace can be significantly increased at a given furnace.
Vidare uppnås genom materialets matningsriktning motströms avgaserna att avlagringar och oljerester etc., förbränns och/eller mekaniskt blåses bort. Ytan blir således fri från förbränningsprodukter och andra föroreningar före vidare be~ fhandling, exempelvis värmebehandling, bearbetning, oxidav- skiljning etc.Furthermore, through the feed direction of the material upstream of the exhaust gases, deposits and oil residues, etc., are burned and / or mechanically blown away. The surface thus becomes free from combustion products and other contaminants before further treatment, for example heat treatment, processing, oxide separation, etc.
I ett tvärsnitt kan en brännare enligt uppfinningen utföras så att den är delad i två halvor utmed dess längdsled. Den ena halvan är förskjutbar relativt den andra halvan medelst ett kraftgivande organ. Att utföra brännaren delad medför fördelen att den långsträckta stålprodukten inte behöver trädas genom brännaren vid uppstartning.In a cross section, a burner according to the invention can be designed so that it is divided into two halves along its longitudinal direction. One half is displaceable relative to the other half by means of a force-giving means. Making the burner split entails the advantage that the elongated steel product does not have to be threaded through the burner at start-up.
Det är således uppenbart att föreliggande uppfinning löser de inledningsvis nämnda problemen.Thus, it is obvious that the present invention solves the problems mentioned in the introduction.
Ovan har ett antal utföringsformer beskrivits. Det är emel- lertid uppenbart att brännarens detaljutformning kan varieras och optimeras med hänsyn till aktuell stålprodukt.A number of embodiments have been described above. However, it is obvious that the detailed design of the burner can be varied and optimized with regard to the steel product in question.
Föreliggande uppfinning skall således inte anses begränsad till ovan angivna utföringsformer utan kan varieras inom dess av bifogade patentkrav angivna ram.Thus, the present invention is not to be construed as limited to the above embodiments, but may be varied within the scope of the appended claims.
Claims (7)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0402864A SE528138C2 (en) | 2004-10-29 | 2004-11-24 | Method and apparatus for heating elongated steel products |
| CA002587035A CA2587035A1 (en) | 2004-10-29 | 2005-10-27 | Method and arrangement for heating extended steel products |
| KR1020077011037A KR20070073910A (en) | 2004-10-29 | 2005-10-27 | Heating method and heating device for extended steel products |
| JP2007538860A JP2008518106A (en) | 2004-10-29 | 2005-10-27 | Method and apparatus for heating drawn steel products |
| EP05796302A EP1812608A1 (en) | 2004-10-29 | 2005-10-27 | Method and arrangement for heating extended steel products. |
| PCT/SE2005/001613 WO2006046919A1 (en) | 2004-10-29 | 2005-10-27 | Method and arrangement for heating extended steel products. |
| BRPI0516668-3A BRPI0516668A (en) | 2004-10-29 | 2005-10-27 | method for heating drawn steel products and arrangement for heating drawn steel products |
| MX2007004849A MX2007004849A (en) | 2004-10-29 | 2005-10-27 | Method and arrangement for heating extended steel products. |
| US10/563,390 US20090174125A1 (en) | 2004-10-29 | 2005-10-27 | Method and arrangement for heating extended steel products |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0402622A SE527771C2 (en) | 2004-10-29 | 2004-10-29 | Procedure for the manufacture of elongated steel products |
| SE0402864A SE528138C2 (en) | 2004-10-29 | 2004-11-24 | Method and apparatus for heating elongated steel products |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE0402864D0 SE0402864D0 (en) | 2004-11-24 |
| SE0402864L SE0402864L (en) | 2006-04-30 |
| SE528138C2 true SE528138C2 (en) | 2006-09-12 |
Family
ID=36228081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0402864A SE528138C2 (en) | 2004-10-29 | 2004-11-24 | Method and apparatus for heating elongated steel products |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20090174125A1 (en) |
| EP (1) | EP1812608A1 (en) |
| JP (1) | JP2008518106A (en) |
| KR (1) | KR20070073910A (en) |
| BR (1) | BRPI0516668A (en) |
| CA (1) | CA2587035A1 (en) |
| MX (1) | MX2007004849A (en) |
| SE (1) | SE528138C2 (en) |
| WO (1) | WO2006046919A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2674721C (en) * | 2007-01-30 | 2018-04-03 | Verenium Corporation | Enzymes for the treatment of lignocellulosics, nucleic acids encoding them and methods for making and using them |
| CN102031360B (en) * | 2010-10-14 | 2012-08-08 | 浙江佰耐钢带有限公司 | Steel belt direct electrical continuous heater of pressure plate electrode |
| EP3314028B1 (en) | 2015-06-24 | 2020-01-29 | Novelis Inc. | Fast response heaters and associated control systems used in combination with metal treatment furnaces |
| KR102437565B1 (en) * | 2015-11-27 | 2022-08-29 | 삼성전자주식회사 | Method for manufacturing semiconductor package having heat slug and method for manufacturing heat slug |
| US12172204B2 (en) * | 2020-01-10 | 2024-12-24 | Te Connectivity Solutions Gmbh | Heated guide track for a press machine for manufacturing a strip |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3721520A (en) | 1971-09-02 | 1973-03-20 | Selas Corp Of America | Galvanizing wire |
| JPS5632877Y2 (en) * | 1977-04-30 | 1981-08-04 | ||
| JP4877680B2 (en) | 2001-03-28 | 2012-02-15 | 東京瓦斯株式会社 | Wire heating furnace |
-
2004
- 2004-11-24 SE SE0402864A patent/SE528138C2/en not_active IP Right Cessation
-
2005
- 2005-10-27 KR KR1020077011037A patent/KR20070073910A/en not_active Withdrawn
- 2005-10-27 MX MX2007004849A patent/MX2007004849A/en unknown
- 2005-10-27 WO PCT/SE2005/001613 patent/WO2006046919A1/en not_active Ceased
- 2005-10-27 US US10/563,390 patent/US20090174125A1/en not_active Abandoned
- 2005-10-27 BR BRPI0516668-3A patent/BRPI0516668A/en not_active Application Discontinuation
- 2005-10-27 EP EP05796302A patent/EP1812608A1/en not_active Withdrawn
- 2005-10-27 JP JP2007538860A patent/JP2008518106A/en not_active Abandoned
- 2005-10-27 CA CA002587035A patent/CA2587035A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| SE0402864L (en) | 2006-04-30 |
| CA2587035A1 (en) | 2006-05-04 |
| MX2007004849A (en) | 2008-10-24 |
| JP2008518106A (en) | 2008-05-29 |
| BRPI0516668A (en) | 2008-09-16 |
| EP1812608A1 (en) | 2007-08-01 |
| WO2006046919A1 (en) | 2006-05-04 |
| SE0402864D0 (en) | 2004-11-24 |
| US20090174125A1 (en) | 2009-07-09 |
| KR20070073910A (en) | 2007-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |