CN100577825C - Direct combustion type metallic tube bright heat treatment furnace - Google Patents
Direct combustion type metallic tube bright heat treatment furnace Download PDFInfo
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- CN100577825C CN100577825C CN200810061558A CN200810061558A CN100577825C CN 100577825 C CN100577825 C CN 100577825C CN 200810061558 A CN200810061558 A CN 200810061558A CN 200810061558 A CN200810061558 A CN 200810061558A CN 100577825 C CN100577825 C CN 100577825C
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Abstract
A direct burning type bright heat treatment furnace of metal tube belongs to the field of the fabrication technology of the heat treatment processing equipment for metal, which comprises a preheating chamber (19) which is equipped with a convey roller (3), a heating chamber (19), a heat insulation chamber (1), a cooling chamber (12) and a drying chamber (20) which are connected successively. The upper end and the lower end of the heating chamber (15) are equipped with an air conduit (8), a flue (9), and a fuel gas conduit (11) with a burner (10). The front end of the preheating chamber (19) is equipped with a curtain falling (5), the upper part is equipped with an upper flue (6) with a heat exchanger (7), and the heat exchanger (7) is connected with the air conduit (8) and a drying tube (13); The cooling chamber (12) is equipped with a cooling conduit (17) with a cooling water spray system (14). The drying tube (13) is positioned in the drying chamber (20). The direct burning type bright heat treatment furnace of metal tube has the advantages of the reasonable design of entire structure, effectively promoting the heating efficiency of fuel gas, and reducing the energy consumption and the heat treatment cost.
Description
Technical field
The present invention relates to a kind of direct combustion type metallic tube bright heat treatment furnace, belong to the manufacturing technology field of metal heat treatmet processing units.
Background technology
Metal current tubing bright heat treatment furnace mainly contains net belt type bright annealing oven, roller bottom type bright heat treatment furnace, roller spacer screen belt bright annealing oven, ride formula or flue formula vacuum annealing furnace etc.; but these annealing furnaces all be with electricity or heating tube as heating unit, also in stove, feed inertia such as nitrogen, nitrogen+hydrogen, argon gas or reducing gas specially and protect not oxidation of metal pipe material.But electricity belongs to secondary energy, and the cost height consumes greatly products production manufacturing cost height simultaneously.Especially also limited the production of product along with the anxiety of electric energy.The heating tubular type belongs to the secondary indirect heating, and flame needs earlier the heating tube heating, again by heating tube with heat radiation in burner hearth, heat temperature raising is slow, thermo-efficiency is low, consumes greatly, also needs to be introduced separately into the anti-oxidation of protective gas protection annealing product simultaneously.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can effectively improve the combustion gas heating efficiency, cut down the consumption of energy and the direct combustion type metallic tube bright heat treatment furnace of thermal treatment cost.
The present invention is a direct combustion type metallic tube bright heat treatment furnace, it is characterized in that comprising successively link to each other in establish the heating chamber that transmits roller-way, insulation slow cooling chamber, cooling room, kiln; Heating chamber and the outdoor bag thermal insulation fire-resistant of insulation slow cooling material, the interior two ends up and down of heating chamber are provided with air line, flue, the gas pipeline of band burner; Be provided with the cooling duct of band cool water shower device in the cooling room; Be provided with drying tube in the kiln.
The front end of described heating chamber also can be provided with the preheating chamber of outsourcing thermal insulation fire-resistant material.The top of described preheating chamber also can be provided with the top flue of heat exchanger, and heat exchanger links to each other with drying tube with air line.The front end of described preheating chamber also can be provided with and hold court from behind a screen, to prevent and to reduce the loss of metal pipe material ingress heat.
The present invention compared with prior art has following outstanding advantage and positively effect:
1, utilizes combustion gas such as Sweet natural gas, liquefied gas, coal gas directly burning in heating chamber, and in heating chamber, form the reducing atmosphere of malleation.The heat that fuel gas buring produces is not by other tangible medium, directly to heating by the metal pipe material in the heating chamber continuously, metal pipe material is heated fast heat up and reaches the desired softening temperature of technology, thermoplastic metal pipe material directly cools off by heat-eliminating mediums such as water, cold air immediately continuously fast, thereby annealing thermal treatment and cooled metal pipe material surface are not taken place or rare oxidation stain.Improved the heating efficiency and the heat utilization efficiency of combustion gas, shortened the heat temperature raising time of metal tube, improved continuously, saved electric energy simultaneously, reduced energy consumption by heat treated speed and treatment production efficient.
2, under the condition of no Additional Protection gas, can make burning be reducing flame by adjusting the air-fuel ratio of fuel gas buring, the CO, the H that utilize combustion gas self burning to produce
2, N
2, CO
2Etc. inertia and reducing gas, and form malleation, prevented in the outer air admission stove of stove, realize a step clean annealing of metal pipe material, guaranteed non-oxidation in the metal pipe material heat treatment process, reduce the consumption and the protective gas generating unit of protective gas.Metal pipe material surface-brightening after the annealing, no obvious oxidation tint need not carried out pickling and other surface treatments, have reduced the metal consumption of annealing rear surface processing and the processing and the discharging of pickle solution, have reduced the pollution to environment.
3, the metal pipe material after the thermal treatment directly sprays cooling fast by heat-eliminating mediums such as water, inertia cold air continuously, has accelerated speed of cooling, has shortened cooling time, has shortened the length of stove cooling zone.Thereby make metal pipe material under the condition that does not have the protection of rare gas element or reducing gas, also can reach the non-oxidizing purpose of metal pipe material surface-brightening.
Description of drawings
Fig. 1 is an one-piece construction sectional view of the present invention;
Fig. 2 is an A-A face structure sectional view shown in Figure 1.
Among the figure, 1 is insulation slow cooling chamber, and 2 is the thermal insulation fire-resistant material, and 3 for transmitting roller-way, 4 is metal pipe material, and 5 for holding court from behind a screen, and 6 is the top flue, and 7 is heat exchanger, 8 is air line, and 9 is flue, and 10 is burner, and 11 is gas pipeline, 12 is cooling room, and 13 is drying tube, and 14 is the cool water shower device, 15 is heating chamber, and 16 is cascade, and 17 is cooling duct, 18 is flame, and 19 is preheating chamber, and 20 is kiln.
Embodiment
The present invention mainly is made of the preheating chamber 19 of establishing transmission roller-way 3 in linking to each other successively, heating chamber 15, insulation slow cooling chamber 1, cooling room 12, kiln 20 etc.; Preheating chamber 19, heating chamber 15, insulation slow cooling chamber 1 outsourcing thermal insulation fire-resistant material 2, heating chamber 15 interior two ends up and down are provided with the gas pipeline 11 of air line 8, flue 9, band burner 10; The front end of preheating chamber 19 is provided with holds court from behind a screen 5, and top is provided with the top flue 6 of heat exchanger 7, and heat exchanger 7 links to each other with drying tube 13 with air line 8; Be provided with the cooling duct 17 of band cool water shower device 14 in the cooling room 12; Be provided with drying tube 13 in the kiln 20.
Below in conjunction with embodiment the present invention is further described, technical process of the present invention is divided into preheating section I, heating zone II, insulation slow cooling section III, cooling section IV and dryer section V, the transmission roller-way 3 of metal pipe material adopts the heat-resistance stainless steel roller, the surface is through polishing and polished finish, the last plane of transmitting roller-way 3 is the medullary ray of preheating chamber 19, heating chamber 15, insulation slow cooling chamber 1, cooling room 12, kiln 20, and preheating chamber 19, heating chamber 15, insulation slow cooling chamber 1, cooling room 12, kiln 20 are rectangle or rectangular configuration.
1, preheating section I: metal pipe material 4 enters in the preheating chamber 19, by the furnace gas in the heating chamber 15 metal pipe material 4 is carried out preheating, makes its temperature be elevated to 400～500 ℃ by room temperature.
2, heating zone II: quantity and model that burner in the burner 10 is set according to the annealing temperature of heat treatment requirements in the heating chamber 15, burner 10 places the both sides up and down of heating chamber 15, with the last plane of transmitting roller-way 3 is that the center is two misarrangement positions distribution up and down, to guarantee that metal pipe material 4 is heated evenly, the size of the flame 18 of burner 10 regulates air-flow according to thermal treatment temp automatically by the gas regulation control valve and tolerance is controlled, flame 18 and hot gas that burner 10 ejects directly spray in the heating chamber 15, so that the metal pipe material 4 that passes through continuously in the heating chamber 15 is heated to 700～900 ℃ at short notice.Air-fuel ratio by regulating combustion atmosphere is to guarantee that burner flame is a reducing flame simultaneously.Gaseous combustion generates CO, H
2, N
2, CO
2Etc. inertia and reducing gas, regulate tolerance and make the reducing atmosphere that remains malleation in the heating chamber 15, prevented the oxidation of metal pipe material 4 when heating.
Furnace gas after the heating carries out preheating through preheating chamber 19 inner segments to the metal pipe material 4 that enters in the heating chamber 15 simultaneously, metal pipe material 4 temperature after the preheating can reach 400～500 ℃, flue gas after the preheating enters into heat exchanger 7 by preheating chamber 19 top flues 6, the air that will enter in the burner 15 by air line 8 heat exchange in heat exchanger 7 carries out preheating, preheating temperature is 100～300 ℃, has improved efficiency of combustion so again.
3, insulation slow cooling section III: the metal pipe material 4 after the heating enters insulation slow cooling chamber 1 and cools off.The purpose one of insulation slow cooling section III is the calorific loss that reduces in the heating chamber 15, the 2nd, utilize the furnace gas in the heating chamber 15 to make the metal pipe material 4 of the condition of high temperature that an insulation annealing process be arranged before entering cooling section IV, make metal pipe material 4 behind the recrystallize that the process of a grain growth be arranged, prevent to cool off too fast and cause stress concentration and crystal grain meticulous, make metal pipe material 4 sclerosis and embrittlement.Temperature at indoor 1 metal pipe material 4 of insulation slow cooling will be reduced to 450～650 ℃ by original 700～900 ℃.
4, cooling section IV: the water that the cool water shower device 14 in the cooling room 12 is introduced cooling duct 17 is cascade 16 and sprays equably on the metal pipe material 4, make its be cooled fast to≤50 ℃, the metal pipe material 4 that has prevented certain temperature exposes in air and the oxidation that causes.
5, dryer section V: the narrow slit of row's aperture or width≤5mm is arranged at drying tube 13 bottoms in the kiln 20, after 150～300 ℃ of low temperature furnace gases after the heat exchange feed drying tube 13, gas sprays from aperture or narrow slit, dries up the water coolant of metal pipe material 4 remained on surface.
Said process is finished under the high-speed cruising of 450～800mm/min continuously according to the metal pipe material of different size, and the speed of the metal pipe material of prior art by heat treatment furnace is 150～350mm/min.Therefore, each stage of heat treatment process all is to finish in the short period of time, has so not only improved metal pipe material 4 heat treated efficient, metal pipe material 4 cleanings after the thermal treatment simultaneously, light.
Claims (4)
1, a kind of direct combustion type metallic tube bright heat treatment furnace, it is characterized in that comprising successively link to each other in establish the heating chamber (15) that transmits roller-way (3), insulation slow cooling chamber (1), cooling room (12), kiln (20); Heating chamber (15) and insulation slow cooling chamber (1) outsourcing thermal insulation fire-resistant material (2), the interior two ends up and down of heating chamber (15) are provided with air line (8), flue (9), the gas pipeline (11) of band burner (10); Be provided with the cooling duct (17) of band cool water shower device (14) in the cooling room (12); Be provided with drying tube (13) in the kiln (20).
2, by the described direct combustion type metallic tube bright heat treatment furnace of claim 1, it is characterized in that the front end of described heating chamber (15) also is provided with the preheating chamber (19) of outsourcing thermal insulation fire-resistant material (2).
3, by the described direct combustion type metallic tube bright heat treatment furnace of claim 2, it is characterized in that the top of described preheating chamber (19) is provided with the top flue (6) of heat exchanger (7), heat exchanger (7) links to each other with drying tube (13) with air line (8).
4, by claim 2 or 3 described direct combustion type metallic tube bright heat treatment furnaces, it is characterized in that the front end of described preheating chamber (19) also is provided with hold court from behind a screen (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810061558A CN100577825C (en) | 2008-05-06 | 2008-05-06 | Direct combustion type metallic tube bright heat treatment furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810061558A CN100577825C (en) | 2008-05-06 | 2008-05-06 | Direct combustion type metallic tube bright heat treatment furnace |
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| CN101270406A CN101270406A (en) | 2008-09-24 |
| CN100577825C true CN100577825C (en) | 2010-01-06 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845544A (en) * | 2010-05-22 | 2010-09-29 | 奉化市光亮热处理电炉有限公司 | Annealing furnace capable of preventing deformation of internal furnaces |
| CN102021303B (en) * | 2010-11-23 | 2012-05-23 | 冯新林 | Pipe inner combustion type nodular casting iron pipe conformal furnace shell annealing furnace |
| CN102051468B (en) * | 2010-12-07 | 2012-12-26 | 苏州中门子科技有限公司 | Reducing atmosphere heat treatment furnace |
| CN102041361A (en) * | 2010-12-10 | 2011-05-04 | 苏州中门子科技有限公司 | Heat recycle device on bearing steel isothermal spheroidizing annealing furnace |
| CN102002562A (en) * | 2010-12-10 | 2011-04-06 | 苏州中门子科技有限公司 | Bearing steel isothermal spheroidizing annealer |
| CN105671253A (en) * | 2016-02-23 | 2016-06-15 | 王亚萍 | Multifunctional annealing furnace |
| CN105925777A (en) * | 2016-06-02 | 2016-09-07 | 王爱华 | Multi-functional annealing furnace |
| CN108448366B (en) * | 2018-02-08 | 2020-03-20 | 烟台孚信达双金属股份有限公司 | Production process of copper-aluminum transition wiring terminal with limiting constraint condition |
| CN114836603A (en) * | 2022-04-12 | 2022-08-02 | 江苏常宝普莱森钢管有限公司 | Surface quality adjusting process for bright heat treatment furnace |
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| US4039148A (en) * | 1975-01-14 | 1977-08-02 | Kobe Steel Ltd. | Conveying device for long articles within heat treatment furnaces |
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2008
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| US4039148A (en) * | 1975-01-14 | 1977-08-02 | Kobe Steel Ltd. | Conveying device for long articles within heat treatment furnaces |
| CN2185268Y (en) * | 1994-04-18 | 1994-12-14 | 无锡市江南工业炉有限公司 | Efficient naked fire heat treating furnace for wire |
| CN2905817Y (en) * | 2006-06-02 | 2007-05-30 | 刘智玉 | Fuel gas type net belt annealing oven of bottle-making machine |
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| CN101270406A (en) | 2008-09-24 |
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