CN101812582A - Steel wire heat processing naked-flame furnace - Google Patents
Steel wire heat processing naked-flame furnace Download PDFInfo
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- CN101812582A CN101812582A CN 201010155798 CN201010155798A CN101812582A CN 101812582 A CN101812582 A CN 101812582A CN 201010155798 CN201010155798 CN 201010155798 CN 201010155798 A CN201010155798 A CN 201010155798A CN 101812582 A CN101812582 A CN 101812582A
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Abstract
The invention relates to a steel wire heat processing naked-flame furnace. The front part of a heating section is set as a hot wind type structure, two sides of a hearth are provided with hot wind burning nozzles, the input end of the burning nozzle is provided with an air pipe and a gas pipe; the back part of the heating section is set as a pre-mixing type structure, two sides of the hearth are provided with a pre-mixing burning nozzle, the air pipe and the gas pipe are firstly connected to a pre-mixer, and then are connected to the pre-mixing burning nozzle by a mixed gas pipe; an integral gas discharging channel is arranged at the heating section, and a heat exchanger is arranged in the integral gas discharging channel. The invention efficiently utilizes the characteristic that the steel wire is oxidized at low speed at the temperature lower than 700 DEG C, and adopts the combined heating way of the hot wind heating and the pre-mixing heating, so that the energy is effectively utilized, the oxidation of the steel wire is little without decarburizing, and the heated steel wire has stable quality and the intensity difference is small.
Description
Technical field
The present invention relates to the Equipment for Heating Processing field, especially heat processing naked-flame furnace.
Background technology
The thermal treatment process of steel wire is that steel wire is made the important process in the production process, and main Equipment for Heating Processing is a direct-fired heater at present, and form commonly used has following two kinds.
A kind of is the hot air type heat processing naked-flame furnace, and as shown in Figure 2, blast main 2 carries air and combustion gas to the hot blast burner 4 of burner hearth both sides respectively with gas line 3, also burns in burner 4 internal mix, to the steel wire 1 of burner hearth 8 internal spray flame heating streamlines conveying.Such direct-fired heater can pass through the inner interchanger that is provided with of smoke-uptake with the air in the heat preheated air pipe 2 of flue gas, so funnel temperature low (300～400 ℃), and energy consumption is low, and thermal treatment steel wire per ton needs 26～30m approximately
3Sweet natural gas.But the shortcoming of the direct-fired heater of this type is accurately to control the ratio of combustion gas and air, the atmosphere of each heating zone of heat processing naked-flame furnace changes with variation of temperature in the stove, steel wire is bigger in the amount of oxidation of heat-processed, reaches 3%～4%, the decarburization phenomenon therefore often occurs; And because the velocity of flue gas of burner 4 outlets is low, only have an appointment about 70m/s, so non-uniform temperature in the stove, the temperature of both sides is higher, and the temperature of central authorities is lower, and the wire quality after therefore handling is poor, and the intensity of steel wire scattered error is big, generally between 50～100MPa.
Another kind of direct-fired heater is premixed heat processing naked-flame furnace, and as shown in Figure 3, air and combustion gas are delivered to premixer 5 earlier by blast main 2 and gas line 3 respectively and carry out premix, and the pre-mixing burner 6 that is delivered to burner hearth 8 both sides by mixture pipe 7 burns then.Premixer 5 is as the disclosed structure of utility model patent " the gas-air mixing tank of 200620072712.5---industrial furnace ", can pass through rotary regulating sleeve, can change the fuel gas inlet size, thereby accurately regulate the ratio of combustion gas and air, and then can accurately control the atmosphere of each heating zone of direct-fired heater, guarantee that steel wire 1 is littler in the amount of oxidation of heat-processed, actual value is not more than 0.3%, guarantees not decarburization of steel wire; Owing to adopt premixed combustion, combustion processes is carried out in pre-mixing burner 6 brick chambeies simultaneously, and the velocity of flue gas height of burner 6 outlets can reach 130m/s, can stir inner flue gas of the stove, makes the interior temperature of stove even; Therefore the steel wire in burner hearth is heated evenly, and the wire quality after the processing is stable, and the intensity scattered error is little, less than 30Mpa.But such direct-fired heater can not adopt and add warm air and carry out premix, otherwise security incident can occur, thereby can not effectively utilize the useless cigarette heat of smoke-uptake, and the funnel temperature height reaches 600～700 ℃, the energy consumption height, and thermal treatment steel wire per ton needs 42～45m approximately
3Sweet natural gas.
Summary of the invention
There are relative merits in the applicant separately at two kinds of main types of above-mentioned existing steel wire heat processing naked-flame furnace, can't better satisfy needs of production, a kind of steel wire heat processing naked-flame furnace rational in infrastructure is provided, thus can energy efficient, guarantee the thermal treatment quality of steel wire simultaneously.
The technical solution adopted in the present invention is as follows:
A kind of steel wire heat processing naked-flame furnace, the front portion of heating zone is set to the hot air type structure, is provided with the hot blast burner in the burner hearth both sides, and the burner input terminus is provided with blast main and gas line; The rear portion of heating zone is set to premixed structure, is provided with the pre-mixing burner in the burner hearth both sides, and blast main and gas line are connected to premixer earlier, connects the pre-mixing burner by mixture pipe again; In heating zone the smoke-uptake of one is set, inside is provided with interchanger.
The anterior hot air type scantling length of steel wire heat processing naked-flame furnace accounts for 1/4～1/2 of whole heading-length; The premixed scantling length in rear portion accounts for 1/2～3/4 of whole heading-length.
The present invention has effectively utilized wire temperature 700 ℃ of characteristics that following oxidation rate is low, adopts hot blast heating and premix heating blended type of heating, has not only effectively utilized the energy, and the thermal treatment of steel wire per ton needs 32～35m approximately
3Sweet natural gas, reduce about 20% than premixed heat processing naked-flame furnace; And steel wire amount of oxidation in high-temperature heating process is little, is not more than 0.3%, and guarantees not decarburization of steel wire, and the wire quality after the thermal treatment is stable, and the intensity scattered error is little, is not more than 30Mpa.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is the sectional view in A-A cross section among Fig. 1;
Fig. 3 is the sectional view in B-B cross section among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, the front portion of heating zone of the present invention is set to the hot air type structure, its length accounts for about 1/3 of whole heading-length, its rear portion is set to premixed structure, its length accounts for about 2/3 of whole heading-length, and above-mentioned length ratio can be adjusted according to the specification and the turnout of actual heat treatment product.As shown in Figure 2, burner hearth 8 both sides of forward hot air type structure are provided with hot blast burner 4, by blast main 2, gas line 3 input airs and combustion gas, mix in hot blast burner 4 and burning, to the steel wire 1 of burner hearth 8 internal spray flame heating streamlines conveying.As shown in Figure 3, burner hearth 8 both sides of the premixed structure at rear portion are provided with pre-mixing burner 6, air and combustion gas are delivered to premixer 5 earlier by blast main 2 and gas line 3 respectively and carry out premix, are delivered to pre-mixing burner 6 by mixture pipe 7 then and burn, and steel wire 1 is heated.Whole heating zone is provided with the smoke-uptake of one, can be by interchanger with air in the blast main 2 of the anterior hot air type structure of heat preheating of smoke-uptake flue gas.
Because when steel wire heated in the anterior heating zone of heat processing naked-flame furnace, wire temperature was not high, less than 700 ℃, the steel wire oxidation rate is low under this temperature, so this section oven cavity atmosphere is not obvious to the oxygenizement of steel wire; But the heat that needs in this section heating zone is very big, accounts for 50% of total heat requirement, so the present invention can effectively reduce fuel consumption at this section employing hot blast combustion system.And steel wire temperature height when the heating back segment, reach 800～900 ℃, oxidation easily takes place in steel wire, needs strict control oven cavity atmosphere this moment, makes the interior temperature of burner hearth even, the present invention adopts the premix type of heating in this section, premixer can accurately be controlled the ratio of combustion gas and air, thereby can accurately control oven cavity atmosphere, therefore can make steel wire amount of oxidation in high-temperature heating process littler, be not more than 0.3%, and guarantee not decarburization of steel wire; The inner flow of flue gas of the burner hearth of the mode of premixed combustion simultaneously is violent, and steel wire is heated evenly, and the wire quality after the thermal treatment is stable, and the intensity scattered error is little, is not more than 30Mpa.The present invention is provided with the smoke-uptake of one to whole heating zone, can be by interchanger with the air in the anterior hot air type blast main 2 of the heat preheating of smoke-uptake flue gas, so funnel temperature is low, about 350～450 ℃, the energy utilization rate height, the thermal treatment of steel wire per ton needs 32～35m approximately
3Sweet natural gas, reduce about 20% than premixed heat processing naked-flame furnace stove.
More than describing is explanation of the invention, not that institute of the present invention restricted portion is referring to claim, under the situation of spirit of the present invention to the qualification of invention, the present invention can do any type of modification, and for example the present invention also can be used for the thermal treatment process of steel band.
Claims (2)
1. steel wire heat processing naked-flame furnace, it is characterized in that: the front portion of heating zone is set to the hot air type structure, is provided with the hot blast burner in the burner hearth both sides, and the burner input terminus is provided with blast main and gas line; The rear portion of heating zone is set to premixed structure, is provided with the pre-mixing burner in the burner hearth both sides, and blast main and gas line are connected to premixer earlier, connects the pre-mixing burner by mixture pipe again; In heating zone the smoke-uptake of one is set, inside is provided with interchanger.
2. steel wire heat processing naked-flame furnace as claimed in claim 1 is characterized in that: described anterior hot air type scantling length accounts for 1/4～1/2 of whole heading-length; The premixed scantling length in rear portion accounts for 1/2～3/4 of whole heading-length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101557989A CN101812582B (en) | 2010-03-23 | 2010-03-23 | Steel wire heat processing naked-flame furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101557989A CN101812582B (en) | 2010-03-23 | 2010-03-23 | Steel wire heat processing naked-flame furnace |
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| CN101812582A true CN101812582A (en) | 2010-08-25 |
| CN101812582B CN101812582B (en) | 2011-07-20 |
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| CN2010101557989A Active CN101812582B (en) | 2010-03-23 | 2010-03-23 | Steel wire heat processing naked-flame furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105431559A (en) * | 2013-07-19 | 2016-03-23 | Fib比利时股份公司 | Method and device for heat treating metal wires |
| CN105886752A (en) * | 2016-05-31 | 2016-08-24 | 无锡市鑫沅工业窑炉有限公司 | Thermal treatment furnace for steel wires |
| CN108278602A (en) * | 2018-03-16 | 2018-07-13 | 马德凡 | A kind of burner of brass plating steel wire diffusion furnace |
| CN112593070A (en) * | 2020-12-04 | 2021-04-02 | 江苏胜达科技有限公司 | Bead steel wire drawing online heating furnace and heating method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010977B (en) * | 2010-12-28 | 2012-02-22 | 无锡市新科冶金设备有限公司 | Wire penetrating device of steel wire heat treatment firing furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328669Y (en) * | 1997-05-26 | 1999-07-14 | 易福明 | Oil combustion open fire heating furnace for heat treatment of micro oxidizing steel wire |
| CN101381804A (en) * | 2008-10-21 | 2009-03-11 | 宁波宏协机械制造有限公司 | Heat treating method of thin sheet steel type part |
| CN201313924Y (en) * | 2008-08-27 | 2009-09-23 | 北京京杰锐思技术开发有限公司 | Heat storage type heating furnace without oxidization |
| CN201660683U (en) * | 2010-03-23 | 2010-12-01 | 无锡市鑫润工业炉有限公司 | Steel wire heat treatment open-fire furnace |
-
2010
- 2010-03-23 CN CN2010101557989A patent/CN101812582B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328669Y (en) * | 1997-05-26 | 1999-07-14 | 易福明 | Oil combustion open fire heating furnace for heat treatment of micro oxidizing steel wire |
| CN201313924Y (en) * | 2008-08-27 | 2009-09-23 | 北京京杰锐思技术开发有限公司 | Heat storage type heating furnace without oxidization |
| CN101381804A (en) * | 2008-10-21 | 2009-03-11 | 宁波宏协机械制造有限公司 | Heat treating method of thin sheet steel type part |
| CN201660683U (en) * | 2010-03-23 | 2010-12-01 | 无锡市鑫润工业炉有限公司 | Steel wire heat treatment open-fire furnace |
Non-Patent Citations (3)
| Title |
|---|
| 《金属制品》 19940228 朱焱威等 钢丝明火加热炉的研制与开发 35-38 1-2 第20卷, 第2期 * |
| 《金属制品》 19980831 苗为钢 FIB明火加热炉在钢丝生产中的应用 32-35 1-2 第24卷, 第4期 * |
| 《金属制品》 20000831 方国胜等 马弗式燃油钢丝加热炉的改造 36-38，44 1-2 第26卷, 第4期 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105431559A (en) * | 2013-07-19 | 2016-03-23 | Fib比利时股份公司 | Method and device for heat treating metal wires |
| CN105431559B (en) * | 2013-07-19 | 2017-10-20 | Fib比利时股份公司 | Method and apparatus for heat-treated metal silk |
| CN105886752A (en) * | 2016-05-31 | 2016-08-24 | 无锡市鑫沅工业窑炉有限公司 | Thermal treatment furnace for steel wires |
| CN108278602A (en) * | 2018-03-16 | 2018-07-13 | 马德凡 | A kind of burner of brass plating steel wire diffusion furnace |
| CN112593070A (en) * | 2020-12-04 | 2021-04-02 | 江苏胜达科技有限公司 | Bead steel wire drawing online heating furnace and heating method thereof |
| CN112593070B (en) * | 2020-12-04 | 2022-04-19 | 江苏胜达科技有限公司 | Bead steel wire drawing online heating furnace and heating method thereof |
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| Publication number | Publication date |
|---|---|
| CN101812582B (en) | 2011-07-20 |
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