CN85109465A - A kind of energy-saving annealing process and annealing energy-saving furnace - Google Patents
A kind of energy-saving annealing process and annealing energy-saving furnace Download PDFInfo
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- CN85109465A CN85109465A CN85109465.1A CN85109465A CN85109465A CN 85109465 A CN85109465 A CN 85109465A CN 85109465 A CN85109465 A CN 85109465A CN 85109465 A CN85109465 A CN 85109465A
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Abstract
The invention provides a kind of energy-saving annealing process that utilizes the heated parts heat content to improve the annealing furnace heat utilization efficiency.It is characterized in that annealing workpiece system relatively passes through same burner hearth from two ends, make between the cold and hot workpiece and carry out heat exchange in the natural convection mode.The present invention also provides a kind of annealing energy-saving furnace of implementing above-mentioned technology, i.e. subtend slope tunnel like continuous annealing furnace.Its principal character is two slope shape tracks that are mounted with symmetric offset spread in burner hearth, and with some lateral partitions burner hearth is divided into central heating zone and several heat transfer zone of both sides.Not only simple in structure being easy to of this annealing furnace made, and good energy-conserving effect, can realize the serialization production operation.
Description
The invention belongs to the technical field of metallic substance and workpiece annealing process, a kind of subtend slope tunnel like continuous annealing furnace that utilizes the energy-saving annealing process of hot swapping and implement this technology promptly is provided.
When metallic substance and workpiece (being designated hereinafter simply as workpiece) are annealed thermal treatment, be heated to the desired temperature of annealing process (being designated hereinafter simply as technological temperature) earlier and be incubated the regular hour, and then it is cooled down.Usually the heat that absorbs owing to metal enthalpy increased value has just dissipated in process of cooling, fails to be fully utilized.Though the public clear 55-38012 of Japanese Patent such as spy, spy open clear 56-158812 and the clear 57-134512 of Te Kai etc. and once reported self energy utilization (or claiming recovery of heat) energy-saving annealing process and continuous heat treating furnace, but these heat treatment furnaces all are to adopt the forced convection form to carry out heat exchange, that have even between two plan furnaces, carry out the forced convection heat exchange, thereby its device structure is comparatively complicated, area of dissipation is big, and power consumption is also bigger.
The present invention is directed to the shortcoming of above-mentioned patent, a kind of energy-saving annealing process that utilizes the heated parts heat content to improve the annealing furnace heat utilization efficiency has been proposed, it is characterized in that allowing annealing workpiece from two ends opposite to each other by same burner hearth, make between the hot and cold workpiece mode directly carry out heat exchange with natural convection.The present invention also provides a kind of subtend slope tunnel like continuous annealing furnace of realizing above-mentioned energy-saving annealing process, in the annealing furnace burner hearth, be provided with two slope shape tracks of subtend (being that bi-directional symmetrical is arranged), and burner hearth is divided into central heating zone (being the soaking zone) and monosymmetric several heat transfer zone (being heat exchange zone) with some horizontal fire walls, respectively be provided with inside and outside two groups of sealing doors at track two ends, slope in order to reduce heat lost by radiation and to control the movement velocity of workpiece on the track of slope, fire door system adopts the linkage type bilayer structure in it.The slope shape track can adopt stationary structure, also can adopt the track type removable frame.During annealing, workpiece is under the control of interior fire door interlinked mechanism, enter in the burner hearth from top, slope, annealing furnace two ends respectively one by one (or by volume), they rely on its deadweight (or by crawler belt transmission) intermittent type to advance on slope track separately, in regular turn by each heat transfer zone of both sides, the heat that cold workpiece is released by heated work pieces in heat transfer zone and heating heats up gradually, enter then in the heating zone that is in the burner hearth central part, workpiece finally reaches technological temperature and is incubated the regular hour (thermal treatment of promptly annealing) in the heating zone by the heating unit heating, heating unit can be nichrome wire or globars, and this is identical with known annealing furnace.Annealed heat treated workpiece continuation travels forward along the slope track and enters in the heat transfer zone of burner hearth opposite side, will emit heat as heated work pieces this moment oncoming cold workpiece is heated up.Come to this heat energy recycling of being emitted during work-piece cools after annealing furnace provided by the present invention will be annealed in the heat transfer zone of its both sides.Because two slope tracks are symmetric fully, so charging (cold workpiece) always is in the top of burner hearth, discharging (heated work pieces) then always is in the below of burner hearth, when both sides, central heating zone burner hearth being divided into several heat transfer zone (it is even that this helps each heat transfer zone internal temperature) with horizontal fire wall, in each heat transfer zone, because hot-fluid rises, cold air descends, the heat exchange of natural convection mode will be formed, it is simple in structure in this natural convection heat exchange, effect is preferable, thereby can save energy consumption significantly.With 600 ℃ of annealing temperatures is example, and the cold workpiece of 20 ℃ (being room temperature) enters heat transfer zone can be warming up to 350 ℃, enter central heating zone and be warming up to 600 ℃, and then the heat transfer zone that enters opposite side with cold workpiece heat exchange, be cooled to 200 ℃ and come out of the stove.Like this, annealing workpiece is heated to 600 ℃ nearly over half being left in the stove of heat content, thereby has reduced the heat that infeeds of annealing furnace significantly.
Subtend provided by the present invention slope its hot-fluid synoptic diagram of tunnel annealing furnace as shown in Figure 1.As can be seen from Figure 1: original process net heat (Qx) equals to infeed heat (Qg) and deducts once heat radiation (Qs
1) add reheat (Qc) again, also equaling reheats adds secondary heat radiation (Qs
2) reprocessing part take heat (Qd) out of, that is:
Qx＝Qg-Qs
1+Qc＝Qc+Qs
2+Qd
Therefore, (1) if reheat greater than once the heat radiation, then the original process net heat can be greater than infeeding heat; (2) infeeding heat equals workpiece and takes that heat adds once heat radiation and secondary dispels the heat out of.Original process net heat system is determined by workpiece thermal capacity and annealing process system thereof, in the annealing furnace operational process, can see invariant as, as long as take heat out of and improve the furnace wall adiabatic condition so reduce workpiece, promptly allow workpiece in burner hearth, carry out heat exchange and the thicker good quality refractory filamentary material making furnace lining of heat-insulating property of employing as far as possible repeatedly, just can directly reduce to infeed heat, improve the heat utilization efficiency of annealing furnace effectively.
Two-way slope tunnel annealing furnace embodiment provided by the present invention such as Fig. 2, shown in Figure 3.Fig. 2 is the longitudinal sectional view of annealing furnace; Fig. 3 is the horizontal fire wall scheme of installation of annealing furnace heat transfer zone.
Among Fig. 2 and Fig. 3, (1) is outer fire door, and it is by steam-operating (or hydraulic pressure) mechanism urges; (2) be interior fire door, its adopt linkage type bilayer structure (be Yishanmen when mentioning in addition Yishanmen fall simultaneously).Though the structure of inside and outside fire door itself is a prior art, but it is creative in the tunnel annealing furnace of two-way slope, adopt this door structure, seal thermal insulation good (forming a transition chamber between inside and outside two fire doors) on the one hand, can make annealing workpiece one by one (or by volume) into and out of burner hearth on the other hand, can control the movement velocity of workpiece by annealing soaking time length.Because two slope tracks are symmetric fully, so the door structure at track two ends, a slope that only drawn in Fig. 2.(3) be annealing workpiece (being the coil of wire that is wrapped on the H-wheel among the figure); (4) be horizontal fire wall; (5) be slope track or crawler belt; (6) be heating unit; (7) be the furnace wall.In the embodiment of Fig. 2, annealing furnace includes a central heating zone (I) and both sides totally six heat transfer zone (II).In Fig. 3, have two holes on the dividing plate, two slope tracks pass from the hole respectively, and one on the other, the workpiece on getting on the right track is cold workpiece; On the lower railway is heated work pieces.Between two dividing plates, in the formed heat transfer zone, except two slope tracks, can not add and force convection device (as fan), rely on natural convection mode (also including the radiation conduction certainly) to carry out heat exchange between the hot and cold workpiece.So this annealing furnace is not only simple in structure, processing and fabricating is comparatively easy, and good energy-conserving effect, can realize the serialization production operation.Metal wire or cross section that it is particularly suitable for being wrapped on the H-wheel are the circular large batch of annealing thermal treatment of workpiece.
Claims (3)
1, a kind of energy-saving annealing process that utilizes the heated parts heat content to improve the annealing furnace heat utilization efficiency, it is characterized in that annealing workpiece system from two ends opposite to each other by same burner hearth, make between the hot and cold workpiece mode directly carry out heat exchange with natural convection.
2, a kind of continuous annealing furnace of implementing the described energy-saving annealing process of claim 1, it is made up of institutes such as tunnel-type hearth, fire door and heating units, it is characterized in that:
A, in burner hearth, be provided with two slope shape tracks that bi-directional symmetrical is arranged,
B, burner hearth is divided into central heating zone and monosymmetric several heat transfer zone with some horizontal fire walls,
C, two ends fire door are divided into inside and outside two groups, and fire door adopts the linkage type bilayer structure in it.
3, by the described continuous annealing furnace of claim 2, it is characterized in that the slope shape track can adopt fixed structure, also can adopt caterpillar removable frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85109465 CN1014268B (en) | 1985-12-27 | 1985-12-27 | Energy-saving annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85109465 CN1014268B (en) | 1985-12-27 | 1985-12-27 | Energy-saving annealing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85109465A true CN85109465A (en) | 1987-07-01 |
| CN1014268B CN1014268B (en) | 1991-10-09 |
Family
ID=4796344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85109465 Expired CN1014268B (en) | 1985-12-27 | 1985-12-27 | Energy-saving annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014268B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436635C (en) * | 2006-03-24 | 2008-11-26 | 江苏常发制冷股份有限公司 | Continuous annealing process of blown aluminium plate |
| CN102002563A (en) * | 2010-12-10 | 2011-04-06 | 苏州中门子科技有限公司 | Arranging structure of heaters on bearing-steel isothermal spheroidized annealing furnace |
| CN102317728A (en) * | 2009-02-16 | 2012-01-11 | 株式会社Ihi | Annealing device |
| CN102851678A (en) * | 2012-10-19 | 2013-01-02 | 溧阳市超强链条制造有限公司 | Metal box body capable of heating cleaning water in water box by using waste heat and heating process thereof |
-
1985
- 1985-12-27 CN CN 85109465 patent/CN1014268B/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436635C (en) * | 2006-03-24 | 2008-11-26 | 江苏常发制冷股份有限公司 | Continuous annealing process of blown aluminium plate |
| CN102317728A (en) * | 2009-02-16 | 2012-01-11 | 株式会社Ihi | Annealing device |
| CN102317728B (en) * | 2009-02-16 | 2015-01-14 | 株式会社Ihi | Annealing apparatus |
| CN102002563A (en) * | 2010-12-10 | 2011-04-06 | 苏州中门子科技有限公司 | Arranging structure of heaters on bearing-steel isothermal spheroidized annealing furnace |
| CN102002563B (en) * | 2010-12-10 | 2012-06-27 | 苏州中门子科技有限公司 | Arranging structure of heaters on bearing-steel isothermal spheroidized annealing furnace |
| CN102851678A (en) * | 2012-10-19 | 2013-01-02 | 溧阳市超强链条制造有限公司 | Metal box body capable of heating cleaning water in water box by using waste heat and heating process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1014268B (en) | 1991-10-09 |
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