WO2011000006A2 - Verfahren zum erwärmen von leichtmetallblöcken - Google Patents
Verfahren zum erwärmen von leichtmetallblöcken Download PDFInfo
- Publication number
- WO2011000006A2 WO2011000006A2 PCT/AT2010/000209 AT2010000209W WO2011000006A2 WO 2011000006 A2 WO2011000006 A2 WO 2011000006A2 AT 2010000209 W AT2010000209 W AT 2010000209W WO 2011000006 A2 WO2011000006 A2 WO 2011000006A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light metal
- metal blocks
- heat transfer
- heat
- contact surface
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- 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
-
- 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
-
- 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
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
-
- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
- F27B17/0016—Chamber type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
- F27D17/18—Arrangements for using waste heat for preheating solid materials
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
Definitions
- the invention relates to a method for heating light metal blocks, wherein the light metal blocks are heated by hot burner exhaust gases in an oven.
- the light metal blocks are heated in an oven, usually a blast furnace.
- an oven usually a blast furnace.
- the combustion air required for the burner is preheated with the hot exhaust gases in the heat exchange, whereby fuel savings can be achieved.
- Higher flame temperatures support an environmentally harmful nitric oxide formation.
- the invention is therefore based on the object, a method for heating of light metal blocks of the type described in such a way that under utilization of the waste heat of the kiln exhaust gases, a preheating of the light metal blocks with a reduction of environmental pollution is possible by nitrogen oxides.
- the invention solves the problem set by the fact that the light metal blocks are preheated before being heated in the oven via at least one surface preheating, which is acted upon by a liquid, heated in heat exchange with the hot exhaust gases from the oven, circulated heat transfer medium.
- a circulating, liquid heat transfer medium is heated in heat exchange with the help of the sensible waste heat of the hot exhaust gases from the furnace, with the aid of which then the preheating device is applied, to which the light metal blocks to be heated surface.
- the preheating device is applied, to which the light metal blocks to be heated surface.
- the preheating can also be placed remotely from the oven, because yes, the heat carrier can be pumped without great effort over longer distances in insulated pipes.
- the preheating of the light metal blocks can thus be inserted at an advantageous location in the processing line of the light metal blocks.
- the heat exchanger is to be arranged together with a light metal blocks in a planar system receiving preheating in a heat transfer fluid for a liquid heat transfer, so not through the heat exchanger combustion air for the kiln burner, but a liquid heat carrier is heated its heat to the light metal blocks receiving preheater emits.
- the preheating device may have a frame with a contact surface for the light metal blocks and with a transverse to the contact surface extending, forming a contact surface for the light metal blocks, flowed through by the heat transfer heat transfer plate.
- the heat transfer plate is preferably composed of two layers forming at least one flow channel for the heat carrier between them, of which the layer forming the contact surface for heat transfer should have advantageous properties.
- the opposite position is to be designed so that heat losses are avoided as possible, which requires either a layer of a thermally insulating material or provided with the thermal insulation layer.
- Another measure to support a surface conditioning of the preheater to the light metal block is to resiliently support the heat transfer plate on the side facing away from the contact surface. This resilient support allows independent compensation when the contact surface is not parallel to the adjacent surface of the light metal blocks.
- the footprint of the frame for the light metal blocks drops against the contact surface of the heat transfer plate out.
- the light metal block to be heated in each case slides along the contact surface against the contact surface, in order to fit snugly against this contact surface.
- the footprint can have rollers with an axis parallel to the footprint and the contact surface of the heat transfer plate axes, so that an attached to the rollers of the footprint, for example by means of a hoist light metal block moved by gravity on the rollers against the contact surface of the heat transfer plate and with a weight-related force component is pressed against this contact surface.
- FIG. 1 shows a device according to the invention for heating light metal blocks in a schematic block diagram
- Fig. 2 is a preheating device for the light metal blocks in a vertical cross section
- Fig. 3 is a section along the line IM-III of Fig. 2 on a smaller scale.
- a furnace 2 for heating of light metal blocks 1
- a furnace 2 usually a blast furnace, is provided, which is heated by means of burners 3.
- a fan 4 for distributing the hot burner exhaust gases in the furnace 2 at least one fan 4 is provided.
- the hot exhaust gases from the furnace 2 are withdrawn via an exhaust gas line 5 and fed to a heat exchanger 6, which is part of a heat transfer circuit 7.
- This heat transfer circuit has, in addition to the heat exchanger 6 for heating the liquid heat carrier, a circulation pump 8 and a preheating device 9, which encloses a heat exchanger in the form of a heat transfer plate 10 through which the liquid heat carrier flows.
- the area recorded by the preheater 9 light metal blocks 1 are thus preheated on the adjacent heat exchanger plate 10 by means of the circulated heat transfer medium to be heated after preheating in the oven 2 to the required hot rolling temperature, with the help of the hot burner exhaust gases whose sensible Waste heat after heating the light metal blocks 1 is used for heating the liquid heat carrier in the heat exchanger 6.
- the utilization of the sensible waste heat of the exhaust gases from the furnace 2 not only improves the energy balance, but also allows the furnace 2 to be cooled with a lower flame temperature. To drive the burner 3, so that the risk of increased nitrogen oxide formation can be largely avoided.
- the preheating device 9 itself is shown in more detail in FIGS. 2 and 3.
- the preheating device 9 has a frame 11 which determines a contact surface 13 formed by rollers 12. Transverse to this contact surface 13, and preferably perpendicular thereto, the heat transfer medium flows through the heat transfer plate 10, which is supported on support legs 14 of the frame, as shown in FIG. 2 can be seen. Since the frame 11 is arranged so that the support surface 13 drops against the heat transfer plate 10 and the axes of the rollers 12 of the support surface 13 parallel to the support surface 13 and parallel to the heat exchanger plate 10, the light metal blocks 1 placed on the rollers 12 are due to the weight against the heat exchanger plate 10, which forms a contact surface 15 for the light metal blocks 1. The over the contact surface 15 fed to the respective light metal block 1 heat exchanger plate 10 thus transmits due to the given temperature differences, the heat of the heat exchanger plate 10 by flowing heat transfer to the respective light metal block. 1
- the heat exchanger plate 10 has two layers 16 and 17, between which there is at least one flow channel 18 for the liquid heat carrier, which is connected to a flow 19 and a return 20 of the heat transfer circuit 7.
- the meandering flow channel 18 in the exemplary embodiment according to FIG. 3 is formed, for example, by milling into one of the two layers 16 and 17, preferably into the layer 17 facing away from the contact surface 15. Since it does not depend on a mutual dense delimitation of the individual sections of the flow channel 18, it is sufficient to seal the two layers 16 and 17 against each other by a peripheral circumferential seal 21.
- this layer 16 can be divided by grooves 22 in fields separated from each other, wherein the grooves form bending points, which in an exposure of the layer 16 by the liquid heat transfer an adjustment allow the contact surface 15 to the opposite surface of the respective light metal block 1 by a corresponding deformation of the layer 16.
- the opposite layer 17 must represent a corresponding abutment and either have sufficient bending stiffness or be supported rigidly.
- the facing away from the light metal block 1 layer 17 of the heat exchanger plate 10 is provided with a thermal insulation 23. But it could also be the layer 17 itself be made of a thermally insulating material.
- Another way to support the whopping system of light metal block 1 on the contact surface 15 of the heat exchanger plate 10 is to support the heat exchanger plate 10 via spring elements 24 against the support legs 14 of the frame 11, whereby an independent overall orientation of the heat exchanger plate 1 against the abutment surface of the respective Alloy block 1 is enabled.
- spring elements 24 are indicated in the form of coil springs, but this is not mandatory.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Furnace Details (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Air Supply (AREA)
- Tunnel Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10788222A EP2449144A2 (de) | 2009-07-03 | 2010-06-14 | Verfahren zum erwärmen von leichtmetallblöcken |
| US13/381,704 US20120125569A1 (en) | 2009-07-03 | 2010-06-14 | Method for heating lightweight metal ingots |
| JP2012518689A JP2012531526A (ja) | 2009-07-03 | 2010-06-14 | 軽金属インゴットを加熱するための方法 |
| CN2010800364366A CN102471858A (zh) | 2009-07-03 | 2010-06-14 | 用于加热轻金属块的方法 |
| RU2012103563/02A RU2012103563A (ru) | 2009-07-03 | 2010-06-14 | Способ и устройство для нагрева легкометаллических блоков |
| ZA2012/00030A ZA201200030B (en) | 2009-07-03 | 2012-01-03 | Method for heating lightweight metal ingots |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0104009A AT507669B1 (de) | 2009-07-03 | 2009-07-03 | Verfahren zum erwärmen von leichtmetallblöcken |
| ATA1040/2009 | 2009-07-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2011000006A2 true WO2011000006A2 (de) | 2011-01-06 |
| WO2011000006A3 WO2011000006A3 (de) | 2011-09-01 |
Family
ID=42313262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT2010/000209 Ceased WO2011000006A2 (de) | 2009-07-03 | 2010-06-14 | Verfahren zum erwärmen von leichtmetallblöcken |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20120125569A1 (de) |
| EP (1) | EP2449144A2 (de) |
| JP (1) | JP2012531526A (de) |
| KR (1) | KR20120110079A (de) |
| CN (1) | CN102471858A (de) |
| AT (1) | AT507669B1 (de) |
| RU (1) | RU2012103563A (de) |
| TW (1) | TW201102601A (de) |
| WO (1) | WO2011000006A2 (de) |
| ZA (1) | ZA201200030B (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827009A (zh) * | 2018-07-23 | 2018-11-16 | 易平 | 往复顺序循环预热装置 |
| CN114136136B (zh) * | 2021-11-10 | 2023-11-28 | 中国航发沈阳发动机研究所 | 一种压力波换热器 |
| CN114540609B (zh) * | 2022-01-14 | 2024-05-03 | 湖州中合鑫顺特钢股份有限公司 | 一种基于热量回收的斜底加热工艺 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2014777A1 (de) | 2007-07-11 | 2009-01-14 | Neue Materialien Bayreuth GmbH | Verfahren sowie Vorrichtung zur thermischen Behandlung von Metallblech |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3142860A1 (de) * | 1981-10-29 | 1983-05-11 | Italimpianti (Deutschland) Industrieanlagen GmbH, 4000 Düsseldorf | "verfahren und vorrichtung zum vorwaermen" |
| JPS6260825A (ja) * | 1985-09-10 | 1987-03-17 | Kawasaki Steel Corp | 鋼帯の連続熱処理における予熱方法 |
| JP2007003065A (ja) * | 2005-06-22 | 2007-01-11 | Sanyo Special Steel Co Ltd | 双室炉及び鋼材の加熱方法 |
| CN201106061Y (zh) * | 2007-09-03 | 2008-08-27 | 北京佰能电气技术有限公司 | 电炉加料废钢预热装置 |
| CN101363067A (zh) * | 2008-09-27 | 2009-02-11 | 袁长胜 | 联合式双预热装置 |
-
2009
- 2009-07-03 AT AT0104009A patent/AT507669B1/de not_active IP Right Cessation
-
2010
- 2010-06-14 RU RU2012103563/02A patent/RU2012103563A/ru not_active Application Discontinuation
- 2010-06-14 KR KR1020127000192A patent/KR20120110079A/ko not_active Withdrawn
- 2010-06-14 WO PCT/AT2010/000209 patent/WO2011000006A2/de not_active Ceased
- 2010-06-14 CN CN2010800364366A patent/CN102471858A/zh active Pending
- 2010-06-14 US US13/381,704 patent/US20120125569A1/en not_active Abandoned
- 2010-06-14 JP JP2012518689A patent/JP2012531526A/ja not_active Withdrawn
- 2010-06-14 EP EP10788222A patent/EP2449144A2/de not_active Withdrawn
- 2010-06-23 TW TW099120352A patent/TW201102601A/zh unknown
-
2012
- 2012-01-03 ZA ZA2012/00030A patent/ZA201200030B/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2014777A1 (de) | 2007-07-11 | 2009-01-14 | Neue Materialien Bayreuth GmbH | Verfahren sowie Vorrichtung zur thermischen Behandlung von Metallblech |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201102601A (en) | 2011-01-16 |
| KR20120110079A (ko) | 2012-10-09 |
| EP2449144A2 (de) | 2012-05-09 |
| AT507669A4 (de) | 2010-07-15 |
| WO2011000006A3 (de) | 2011-09-01 |
| ZA201200030B (en) | 2013-04-24 |
| AT507669B1 (de) | 2010-07-15 |
| JP2012531526A (ja) | 2012-12-10 |
| US20120125569A1 (en) | 2012-05-24 |
| RU2012103563A (ru) | 2013-08-10 |
| CN102471858A (zh) | 2012-05-23 |
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