CN201852433U - Atmosphere control mesh band type resistor furnace - Google Patents
Atmosphere control mesh band type resistor furnace Download PDFInfo
- Publication number
- CN201852433U CN201852433U CN2010206130082U CN201020613008U CN201852433U CN 201852433 U CN201852433 U CN 201852433U CN 2010206130082 U CN2010206130082 U CN 2010206130082U CN 201020613008 U CN201020613008 U CN 201020613008U CN 201852433 U CN201852433 U CN 201852433U
- Authority
- CN
- China
- Prior art keywords
- furnace
- atmosphere
- temperature controlled
- controlled region
- controller
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to an atmosphere control mesh band type resistor furnace comprising a furnace body, and a conveying mesh band and a heating radiant tube which are in the furnace body, wherein a heating room of the furnace body is divided into continuous a first, a second, a third, a fourth and a fifth temperature control areas along the advancing direction of the conveying mesh band; a thermocouple and even number of gas instillators are arranged at the middle part of the furnace top of each temperature control area; fans are respectively arranged at the furnace tops of the second and the fourth temperature control areas; oxygen probes are arranged at the furnace tops of the second, the third, the fourth and the fifth temperature control areas. For the resistor furnace, the atmosphere flows reasonably in an hearth of the resistor furnace, thus being obvious in atmosphere saving effect; the surface of a heat treated workpiece can not be subjected to oxidation and decarburization, and is even in the carburization, the workpiece color is light and the quality is stable; a great amount of carbon deposition are not generated in the hearth, thus being cleaner in the hearth, and reducing the adverse effect of the carbon deposition in the furnace on the service life of the oxygen probes.
Description
Technical field
The utility model relates to a kind of atmosphere control net belt type resistance furnace.
Background technology
Resistance furnace is to utilize electric current to make its heating by high-resistance electrothermic alloy, thereby to the industrial furnace of workpiece or material heating.Be extensive use of the net belt type resistance furnace in the industrial production metal material is heat-treated processing, the different Technology for Heating Processing of metal material adopts different atmosphere, and atmosphere such as methanol decomposition atmosphere, nitrogen+methyl alcohol atmosphere or ammonia dissolving atmosphere are adopted in the workpiece quenching; Methyl alcohol+enriched gas atmosphere or nitrogen+methyl alcohol+enriched gas atmosphere etc. are adopted in carburizing; Methyl alcohol+enriched gas+ammonia atmosphere, nitrogen+methyl alcohol+enriched gas+ammonia atmosphere etc. are adopted in carbo-nitriding.Atmosphere control in the heat treatment process directly influences the performance and the quality of product, and therefore, the reasonable disposition of controlled atmospher is the key that guarantees product quality.
The utility model content
The purpose of this utility model promptly provides a kind of atmosphere control net belt type resistance furnace that can reasonable disposition atmosphere.
For solving the problems of the technologies described above, the utility model is taked following technical scheme: a kind of atmosphere control net belt type resistance furnace, comprise body of heater, the foraminous conveyer of body of heater inside and add heat radiation tube, it is characterized in that, the heating clamber of described body of heater is divided into continuous first by described foraminous conveyer direct of travel, second, the 3rd, the the 4th and the 5th temperature controlled region, the furnace roof middle part of each temperature controlled region is equipped with thermocouple and even number atmosphere instillator, the furnace roof of described second temperature controlled region and described the 4th temperature controlled region is respectively equipped with blower fan, and described second, the 3rd, the furnace roof of the 4th and the 5th temperature controlled region is respectively equipped with oxygen probe.
Preferably, described thermocouple connects the temperature controller of described body of heater outside, and described temperature controller connects controller, power supply successively, and described power supply connects described radiant tube.
Preferably, described controller is power controller or solid-state relay.
Preferably, described each temperature controlled region is equipped with several gas flowmeters.
Preferably, the thermocouple of described each temperature controlled region is positioned on the straight line.
The utility model makes atmosphere Rational flow in the resistance furnace burner hearth, and the atmosphere reduction effect is obvious; Oxidation, decarburization can not take place in the heat treated part surface, and carburizing is even, workpiece color light, steady quality; Do not produce a large amount of knot carbon in the burner hearth, burner hearth is cleaner, has reduced and has tied the adverse effect of carbon to the life-span of oxygen probe in the stove.
Description of drawings
Fig. 1 is the structural representation of a kind of atmosphere control net belt type resistance furnace of the present utility model.
Fig. 2 is the schematic top plan view of the temperature controlled region among Fig. 1.
1-body of heater among the figure, 2-first temperature controlled region, 3-second temperature controlled region, 4-the 3rd temperature controlled region, 5-the 4th temperature controlled region, 6-the 5th temperature controlled region, 7-thermocouple, 8-atmosphere instillator, 9-blower fan, 10-radiant tube, 11-guipure.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Referring to Fig. 1, a kind of atmosphere control net belt type resistance furnace, comprise body of heater 1, the foraminous conveyer 11 of body of heater 1 inside and add heat radiation tube 10, the heating clamber of body of heater 1 is divided into the continuous the 1 by foraminous conveyer 11 direct of travels, the 23, the 34, the the 45 and the 5th temperature controlled region 6, the furnace roof middle part of each temperature controlled region is equipped with thermocouple 7 and even number atmosphere instillator 8, the furnace roof of second temperature controlled region 3 and the 4th temperature controlled region 5 is respectively equipped with blower fan 9, the 23, the 34, the furnace roof of the 45 and the 5th temperature controlled region 6 is respectively equipped with oxygen probe (not shown), to detect the carbon potential in the stove.Force furnace gas to circulate by blower fan 9, strengthen convection heat transfer' heat-transfer by convection, make furnace atmosphere and temperature even.
Thermocouple 7 connects the temperature controller (not shown) of body of heater 1 outside, and temperature controller connects controller (not shown), power supply (not shown) successively, and power supply connects radiant tube 10.After thermocouple 7 detects temperature in the stove, compare with the setting value of temperature controller, the temperature departure degree is delivered to controller, the break-make of controller control power supply with control radiant tube 10, realizes the temperature control in the stove.
Controller is power controller or solid-state relay, moves all very stable.
Each temperature controlled region is equipped with several gas flowmeters (not shown), and its quantity is corresponding with the atmosphere quantity that injects temperature controlled region, and every atmosphere pipeline correspondence is provided with a flowmeter, to detect gas flow.
The thermocouple 7 of each temperature controlled region is positioned on the straight line, is in the furnace roof middle part of each temperature controlled region simultaneously, and promptly detected temperature has reduced the measuring position error to thermometric influence all from the same area of each temperature controlled region.
When heat-treating, workpiece enters in the body of heater 1, advance forward along guipure 11, successively by the 1, the 23, the 34, the 45 and the 56 temperature controlled region, atmosphere instillator 8 by each temperature controlled region injects atmosphere in temperature controlled region, atmosphere is Rational flow in burner hearth.
Embodiment:
Specification is the net belt type resistance furnace of 1000*7600, guipure width 1000mm, and effectively heating clamber length 7600mm is divided into five temperature controlled region, heating power 400Kw, the output of heat treated part is 1000Kg/h, combustion space 8.0m
3, 2.5 times/h of rate of ventilation, furnace atmosphere consumption 20m
3/ h.
First temperature controlled region feeds nitrogen N
2, flow is 3.5m
3/ h.
Second temperature controlled region feeds nitrogen N
2+ methyl alcohol CH
3The OH cracking gas, atmosphere total burn-off 4m
3/ h, wherein N
2Be 2m
3/ h, dissociated methanol gas are 2m
3/ h, carbon potential 0.6 in this district.
The 3rd temperature controlled region feeds methyl alcohol CH
3OH cracking gas+propane C
3H
8Gas, for oozing the district by force, carbon potential is 1.0-1.2 in this district, atmosphere total burn-off 4.5m
3/ h, wherein C
3H
8Account for 3%, CH
3OH is 4.4m
3/ h.
The 4th temperature controlled region feeds nitrogen N
2+ methyl alcohol CH
3OH cracking gas+propane C
3H
8Gas, atmosphere total burn-off 4m
3/ h, wherein C
3H
8Account for 1.5%, N
2Account for 60%, all the other are methyl alcohol CH
3The OH cracking gas is the diffusion region, and carbon potential is 0.8-0.9.
The 5th temperature controlled region feeds nitrogen N with the 4th temperature controlled region
2+ methyl alcohol CH
3OH cracking gas+propane C
3H
8Gas, atmosphere total burn-off 4m
3/ h, wherein C
3H
8Account for 1.5%, N
2Account for 60%, all the other are methyl alcohol CH
3The OH cracking gas is the diffusion region, and carbon potential is 0.8-0.9.
Atmosphere reduction effect in this resistance furnace is significantly better than the conventional, electric-resistance stove; The phenomenon of oxidation, decarburization can not take place in heat treated surface of the work, and carburizing is even, workpiece color light, steady quality; Use in the rear hearth and can not produce a large amount of knot carbon, the burner hearth cleaning has reduced and has tied the adverse effect of carbon to the life-span of oxygen probe in the stove.
The above only is a better embodiment of the present utility model; protection domain of the present utility model does not exceed with above-mentioned embodiment; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (5)
1. an atmosphere is controlled the net belt type resistance furnace, comprise the foraminous conveyer of body of heater, body of heater inside and add heat radiation tube, it is characterized in that, the heating clamber of described body of heater is divided into the first, second, third, fourth and the 5th continuous temperature controlled region by described foraminous conveyer direct of travel, the furnace roof middle part of each temperature controlled region is equipped with thermocouple and even number atmosphere instillator, the furnace roof of described second temperature controlled region and described the 4th temperature controlled region is respectively equipped with blower fan, described second, third, the furnace roof of the 4th and the 5th temperature controlled region is respectively equipped with oxygen probe.
2. atmosphere control net belt type resistance furnace according to claim 1 is characterized in that described thermocouple connects the temperature controller of described body of heater outside, and described temperature controller connects controller, power supply successively, and described power supply connects described radiant tube.
3. atmosphere control net belt type resistance furnace according to claim 2 is characterized in that described controller is power controller or solid-state relay.
4. atmosphere control net belt type resistance furnace according to claim 1 is characterized in that described each temperature controlled region is equipped with several gas flowmeters.
5. atmosphere control net belt type resistance furnace according to claim 1 is characterized in that the thermocouple of described each temperature controlled region is positioned on the straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206130082U CN201852433U (en) | 2010-11-18 | 2010-11-18 | Atmosphere control mesh band type resistor furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206130082U CN201852433U (en) | 2010-11-18 | 2010-11-18 | Atmosphere control mesh band type resistor furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852433U true CN201852433U (en) | 2011-06-01 |
Family
ID=44094824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206130082U Expired - Fee Related CN201852433U (en) | 2010-11-18 | 2010-11-18 | Atmosphere control mesh band type resistor furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201852433U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003879A (en) * | 2010-11-18 | 2011-04-06 | 苏州工业园区热处理设备厂有限公司 | Atmosphere control mesh belt type resistance furnace and atmosphere control method thereof |
| CN114990470A (en) * | 2022-07-28 | 2022-09-02 | 连云港德友精工科技有限公司 | Surface carburizing treatment equipment for carbon steel tapping screw production |
-
2010
- 2010-11-18 CN CN2010206130082U patent/CN201852433U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003879A (en) * | 2010-11-18 | 2011-04-06 | 苏州工业园区热处理设备厂有限公司 | Atmosphere control mesh belt type resistance furnace and atmosphere control method thereof |
| CN114990470A (en) * | 2022-07-28 | 2022-09-02 | 连云港德友精工科技有限公司 | Surface carburizing treatment equipment for carbon steel tapping screw production |
| CN114990470B (en) * | 2022-07-28 | 2022-11-01 | 连云港德友精工科技有限公司 | Surface carburizing treatment equipment for producing carbon steel self-tapping screws |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102003879A (en) | Atmosphere control mesh belt type resistance furnace and atmosphere control method thereof | |
| CN100503878C (en) | Carburizing process for reducing internal oxidation | |
| CN101709364B (en) | Metal heat-treatment controllable slow-cooling device and intelligent on-line monitoring system | |
| CN100577825C (en) | Direct combustion type metallic tube bright heat treatment furnace | |
| CN106488994A (en) | The manufacture method of alloyed hot-dip galvanized steel sheet | |
| CN201852433U (en) | Atmosphere control mesh band type resistor furnace | |
| CN206001898U (en) | A kind of meshbeltfurnace heating system | |
| CN103602944A (en) | Thermal treatment furnace and thermal treatment technology thereof for super-huge type multifunctional natural gas energy-saving part | |
| CN106480553B (en) | A kind of pre-oxidation device for carbon fiber production | |
| CN203295556U (en) | Heat-treatment furnace system for waste heat recovery | |
| TW200740510A (en) | Process for denoxification of off-gases from annealing and pickling lines, and an annealing and pickling line, especially for stainless steel hot or cold strip | |
| CN209010566U (en) | A kind of inert gas quenching continuous production impewdance matching system | |
| CN102620561A (en) | Gas-electric compound heating mesh belt furnace with gas radiation pipes in vertical arrangement | |
| CN102620562A (en) | Carrier roller type gas-electric compound heating mesh belt furnace | |
| CN200988849Y (en) | Gas burning spheroidization annealing furnace | |
| CN203559094U (en) | Device for circulating shielding gas in thermal treatment furnace | |
| CN102778133A (en) | Air inlet system of trolley type gas heat treatment furnace | |
| CN202214381U (en) | Bidirectional trolley type thermal treatment furnace | |
| CN201901688U (en) | Thermal-storage efficient protective-atmosphere heat-treatment furnace | |
| CN106244978A (en) | A kind of gas carburizing system | |
| CN204251688U (en) | Atmosphere traverse cycle type mesh belt type carburizing furnace | |
| CN201792066U (en) | Hot blast flow guide structure in aluminum soldering thermal degreasing furnace | |
| CN202322921U (en) | Hearth structure of mesh-belt quenching furnace | |
| CN201186941Y (en) | Direct combustion type metal pipes bright heat treatment furnace | |
| CN202470736U (en) | Gas-electric compound heating wire-mesh belt furnace with longitudinally-arranged fuel gas radiant tubes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20151118 |
|
| EXPY | Termination of patent right or utility model |