CN102312078A - Heat treatment furnace with movable furnace cover - Google Patents
Heat treatment furnace with movable furnace cover Download PDFInfo
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- CN102312078A CN102312078A CN201110274484A CN201110274484A CN102312078A CN 102312078 A CN102312078 A CN 102312078A CN 201110274484 A CN201110274484 A CN 201110274484A CN 201110274484 A CN201110274484 A CN 201110274484A CN 102312078 A CN102312078 A CN 102312078A
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Abstract
The invention relates to a heat treatment furnace with a movable furnace cover and belongs to the technical field of heat treatment. The heat treatment furnace with a movable furnace cover is connected with a combustion system, a measurement and control system and a smoke evacuation system, and comprises a furnace stage, inside which two combustion chambers and a flue are vertically arranged, wherein the flue is positioned between the two combustion chambers and two ends of the combustions are equipped with burners. The upper surface of the furnace stage is provided with a movable furnace cover, two ends of which are equipped with fire doors. A heating chamber is disposed in the inner space of the furnace cover. And the heating chamber respectively communicates with the combustion chambers and the flue through open pores on the furnace stage. In comparison with car-type furnaces, the heat treatment furnace provided by the invention has advantages of light furnace cover, low mobile power of the furnace cover, good furnace seal performance, uniform furnace temperature, few burners, full combustion and the like. The thermal efficiency of the furnace reaches up to more than 36% through measuring and calculating.
Description
Technical field
The present invention relates to a kind of heat treatment furnace, belong to the heat treatment technics field.
Background technology
Transformation of the way anneal of material is one of important procedure of standardized component manufacturing.Because big in batches, it is significant to reduce unit consumption of energy; Temperature uniformity is good, and is even through the material structure of anneal, plays keying action to boosting productivity.
Existing traditional fuel chassis process furnace pipeline and flue all are located at body of heater both sides and top, the health and the room temp condition in workshop directly exerted an influence, and hinder the operation of workshop bridge crane.Traditional structure body of heater both sides and top are associated with rigidity burner air distribution pipeline and flue, interchanger, and be fixing inactive, and the turnover of furnace bottom chassis is moved, and under high-load, hot conditions, moves for a long time, and the life-span is short, and failure rate is high, and stopping property is poor.The thermal treatment quality oxidation and decarbonization is serious, and temperature uniformity is poor, makes after the heat treatment of workpieces hardness uneven, and unit consumption of energy is higher.
Tradition car type furnace fuel combustion chamber and workpiece heating chamber merge into one, and burning oxygen supply and workpiece oxidation are carried out simultaneously, wayward furnace atmosphere, and surface oxidation is serious.
Car type furnace burner consumption is many, generally is arranged in the stove both sides, and 1.5-2m is provided with a pair of burner at interval, and staggered arrangement just needs 8 cover burners like the long burner hearth of 8m relatively, costs an arm and a leg, and facility investment is inevitable high.
Summary of the invention
The technical problem that the present invention will solve is defectives such as the unreasonable structure, the energy consumption that overcome existing car type furnace are high, annealing weak effect, and a kind of periodicity fuel (gas/oil) heating, the heat treatment furnace equipment that bonnet is removable, thermo-efficiency is high, furnace temperature is even, easy and simple to handle are provided.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The portable heat treatment furnace of bonnet is connected with firing system, TT&C system and fume exhaust system, and it comprises table, is provided with two combustion chambers and a flue in the said table, and wherein flue is positioned in the middle of two combustion chambers, and burner ends is established burner; The table upper surface is provided with movably bonnet, and fire door is established at the bonnet two ends, and the space is a heating chamber in the bonnet, and heating chamber is communicated with combustion chamber and flue respectively through the perforate on the furnace table surface.Enough big combustion space is arranged in the combustion chamber, and fuel carries out diffusivity and fully burns, and has reduced environmental pollution again.Hot gas flow in the combustion chamber can only upwards pass through air inlet runner, in the heating chamber of fast flow speed and direction double drum type, forms the big thermal field of monolithic stability main flow; Transmission of heat by convection is strengthened; Temperature uniformity is accelerated, and increases the secondary recycling of hot gas flow, improves heat exchanger effectiveness, energy-conservation.The combustion chamber is regulated and control easily, and workpiece for perfect combustion, produces heat, transfer heat in the section that heats up in a large number; This moment, furnace table surface place furnace pressure was a negative pressure; Being adjusted to oxygen debt burning during to holding stage, is pressure-fired, and heating chamber separates with the combustion chamber; The heating internal ambience is controlled easily, makes low or non oxidizing be heated as reality.
Cover plate is established in the furnace table surface runner perforate of combustion chamber and heating chamber junction, and the adjustable high temperature gas flow is big or small, thereby regulates the temperature uniformity of whole heating chamber.
Said removable bonnet is the semicircle arch; The bonnet bottom is established and is used for the roller that relative furnace table surface slides, and ground is provided with the sliding rail that cooperates with roller.Closed assembly aluminosilicate refractory fiber felt on the hardware wall of bonnet, whole bonnet weight has only 12000kg, and thermal capacity is little, conveniently moving, area of dissipation are little.
The fire door tightness system is established in said bonnet and furnace table surface junction; Said fire door tightness system comprise be arranged on furnace table surface, with the vertical corresponding heat resisting iron spill sealing groove of bonnet, but the refractory fibre of dress electric up-down founds piece in the sealing groove.Sealing mechanism utilizes the upright piece of aluminum silicate fiber to make between bonnet and the table and obturages, and switch fire door place in bonnet the place ahead establishes female mouthful of sealing of fibre felt.Each joint of stove does not produce the phenomenon of burning with anger, and it is minimum that thermal radiation loss reduces to.
Said burner ends is respectively established a burner, and full stove is totally four burners.
Lateral arrangement has a plurality of parallels on the furnace table surface, carry the large-tonnage workpiece after, start full fiber semicircle arch bonnet drive unit, the four-wheel bonnet is moved on two rails, in place after, close the locking fire door; Restart the electric pushrod that fire door sealing groove below is provided with, upwards rise the vertical refractory fiber block of groove inner shoe,, accomplish the soft seal action until holding out against the bonnet base.
The thermo-efficiency of industrial furnace is its most important thermal characteristics parameter, is the foundation that evaluation stove equipment thermal technology's level and energy utilize level, and thermo-efficiency can be explained the energy-saving effect of stove quantitatively.By the definition on the national standard " equipment thermal efficiency calculating general rule ": " equipment thermal efficiency is meant Thermal Equipment for reaching specific purpose, and energize utilizes degree of functioning expression quantitatively, and he equals the percentage ratio of useful energy to energize ".That is:
As previously mentioned, heat treatment furnace of the present invention adopts domes, utilizes the Rational flow of combustion gases in burner hearth; Reduce the area of dissipation of stove, select SB-80 type low pressure multistage atomizing burner for use, atomizing effect is good; Also can regulate furnace pressure wind/oil ratio, help abundant burning, fully play the BQ valuation of specified fuel through motor-driven control valve and TT&C system; Have only 60% of equal effectively windrow area car type furnace through calculating this stove area of dissipation, reduce body of heater surface radiating loss (Q widely
Lose).
The heat treatment furnace of the present invention's preparation, 1989 is the 40kg/t bar through adjusting the raw-material fuel specific of annealing.Calculate by (1) formula:
Q
Imitate=QCAt=1000 * 0.15 * (720-20)=105000 (KCal)
BQ
Estimate=40 * 10000=400000 (KCal)
The same identical heating process of the type of furnace, 2011 long-term produce examination after, this lehre thermo-efficiency has reached 36%, calculation result shows, the thermo-efficiency of this lehre and the fuel specific of annealed material all reach the advanced international level of identical or similar technology.
The full fiber of the present invention, the portable heat treatment furnace of bonnet are mainly used in the Spheroidizing Annealing after the vertical bar and the transformation of the way of wire rod material; Its objective is the crystal grain that utilizes phase transformation recrystallization process and slow cooling subsequently to come all even refinement hypoeutectoid steel; Toughness, elimination internal stress and reduction hardness to improve steel are beneficial to cold plastic deformation processing and screw thread manufacturing procedure.Compare with Bogie hearth furnace, heat treatment furnace of the present invention has that bonnet is light, bonnet moves that power is little, the stove good seal performance, advantages such as furnace temperature is even, burner is few, combustion air preheating, sufficient combustion.The thermo-efficiency of warp measuring and calculating stove is reaching advanced international level up to more than 36% aspect observation and control technology and the fuel consumption.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification sheets, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the application state figure of heat treatment furnace of the present invention;
Fig. 2 is the front view of the heat treatment furnace of Fig. 1;
Fig. 3 is the left view of the heat treatment furnace of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Embodiment 1
Like Fig. 1-shown in Figure 3; The portable heat treatment furnace 1 of bonnet is connected with firing system 2, TT&C system 3 and fume exhaust system 4, and it comprises table 12; Be provided with two combustion chambers 13 and a flue 14 in the table 12; Wherein flue 14 is positioned in the middle of two combustion chambers 13, is connected with fume exhaust system 4, is used to discharge flue gas; 13 two ends, combustion chamber respectively are provided with 1 burner 18, and full stove amounts to 4 burners 18, and wherein, burner 18 is connected with fuel system 2, and receive the supply of fuel of fuel system 2; The table upper surface is provided with movably bonnet 11; The fire door 16 (also being provided with fire door lifting mechanism 17) of fire door lifting mechanism is put in bonnet 11 two ends establishings; The space is a heating chamber 10 in the bonnet 11, and heating chamber 10 is communicated with combustion chamber 13 through the perforate on the furnace table surface, and the furnace table surface of said tapping is established cover plate 19; Adjustable flame is big or small, thereby regulates the temperature uniformity of whole heating chamber; Heating chamber 10 is connected with flue 14 through the exhaust smoke hole 121 that is positioned at table 12.TT&C system 3 is connected respectively with fume exhaust system 4 with the portable heat treatment furnace 1 of bonnet, fuel system 2, through the temperature data that TP is gathered, regulates and control fuel supply, intensity of combustion and smoke evacuation situation according to the production needs.
Movably bonnet 11 is the semicircle arch, and the bottom is established and is used for the roller that relative furnace table surface slides, and ground is provided with the sliding rail (roller and sliding rail 111) that cooperates with roller; Closed assembly aluminosilicate refractory fiber felt on the hardware wall of bonnet.Bonnet 11 is established fire door tightness system 15 with the furnace table surface junction, it comprise be arranged on the table side, with the vertical corresponding heat resisting iron spill sealing groove of bonnet, but the refractory fibre of adorning electric up-down in the sealing groove founds piece.Sealing mechanism utilizes the upright piece of aluminum silicate fiber to make between bonnet and the table surrounding and obturages, and bonnet the place ahead is offered the fire door place and established fibre felt and seal for female mouthful.
Lateral arrangement has a plurality of parallels on the furnace table surface, carry the large-tonnage workpiece after, start full fiber semicircle arch bonnet drive unit, the four-wheel bonnet is moved on two rails, in place after, through fire door lifting mechanism locking fire door; Restart the electric pushrod that fire door sealing groove below is provided with, upwards rise the vertical refractory fiber block of groove inner shoe,, accomplish the soft seal action until holding out against the bonnet base.
The main technical details of the heat treatment furnace of present embodiment is as shown in table 1; To carry out hardness through this heat treatment furnace gained anneal material, metallographicinspection shows; 5 grades of hardness maximum deviation HB11 (seeing table 2) grain fineness numbers, decarburization add carbon poor layer less than 0.08mm (seeing table 3).
The main technical details of table 1 present embodiment heat treatment furnace
The hardness test result of table 2 present embodiment heat treatment furnace gained annealed material
The metallographicinspection result of table 3 present embodiment heat treatment furnace gained annealed material
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the portable heat treatment furnace of bonnet is connected with firing system, TT&C system and fume exhaust system, and it comprises table, it is characterized in that: be provided with two combustion chambers and a flue in the said table, wherein flue is positioned in the middle of two combustion chambers, and burner ends is established burner; The table upper surface is provided with movably bonnet, and fire door is established at the bonnet two ends, and the space is a heating chamber in the bonnet, and heating chamber is communicated with combustion chamber and flue respectively through the perforate on the furnace table surface.
2. the portable heat treatment furnace of bonnet according to claim 1, it is characterized in that: said combustion chamber and heating chamber are separate type, the furnace table surface tapping of junction is established cover plate, adjustable flow.
3. the portable heat treatment furnace of bonnet according to claim 1, it is characterized in that: said removable bonnet is the semicircle arch, interior extension entire fibre lining.
4. the portable heat treatment furnace of bonnet according to claim 3 is characterized in that: said bonnet bottom is established and is used for the roller that relative furnace table surface slides, and is provided with the sliding rail that cooperates with roller on the ground.
5. the portable heat treatment furnace of bonnet according to claim 1, it is characterized in that: the fire door tightness system is established in said bonnet and junction, furnace table surface surrounding.
6. the portable heat treatment furnace of bonnet according to claim 5 is characterized in that: said fire door tightness system comprise be arranged on furnace table surface, with the vertical corresponding heat resisting iron spill sealing groove of bonnet, but the refractory fibre of adorning electric up-down in the sealing groove founds piece.
7. the portable heat treatment furnace of bonnet according to claim 1, it is characterized in that: said burner ends is respectively established a burner, and full stove is totally four burners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110274484 CN102312078B (en) | 2011-09-15 | 2011-09-15 | Heat treatment furnace with movable furnace cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110274484 CN102312078B (en) | 2011-09-15 | 2011-09-15 | Heat treatment furnace with movable furnace cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102312078A true CN102312078A (en) | 2012-01-11 |
| CN102312078B CN102312078B (en) | 2013-09-11 |
Family
ID=45425645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110274484 Expired - Fee Related CN102312078B (en) | 2011-09-15 | 2011-09-15 | Heat treatment furnace with movable furnace cover |
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| CN (1) | CN102312078B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1275706A (en) * | 2000-05-19 | 2000-12-06 | 赵富举 | Smoke and fire enclosed type secondary combustion heating furnace |
| CN2656821Y (en) * | 2003-10-30 | 2004-11-17 | 杜维新 | Coal-fired gasification industrial furnace and kiln |
| CN202297688U (en) * | 2011-09-15 | 2012-07-04 | 王家琪 | Heat treatment furnace with mobile furnace cover |
-
2011
- 2011-09-15 CN CN 201110274484 patent/CN102312078B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1275706A (en) * | 2000-05-19 | 2000-12-06 | 赵富举 | Smoke and fire enclosed type secondary combustion heating furnace |
| CN2656821Y (en) * | 2003-10-30 | 2004-11-17 | 杜维新 | Coal-fired gasification industrial furnace and kiln |
| CN202297688U (en) * | 2011-09-15 | 2012-07-04 | 王家琪 | Heat treatment furnace with mobile furnace cover |
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| Publication number | Publication date |
|---|---|
| CN102312078B (en) | 2013-09-11 |
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Owner name: WANG JIAQI Free format text: FORMER OWNER: BEIJING JINGLU XINGHUA INDUSTRIAL FURNACE CO., LTD. Effective date: 20120426 |
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Effective date of registration: 20120426 Address after: 101203, Beijing, Daxing District Zhuang Road prosperous Park 7-3-102 Applicant after: Wang Jiaqi Address before: 101203, 1000 meters south of Huangcun Town, Huangcun Town, Beijing, Daxing District Applicant before: Beijing Jinglu Xinghua Industrial Furnace Co.,Ltd. |
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Granted publication date: 20130911 Termination date: 20210915 |
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