CN102399953B - Suspended isothermal normalizing production line - Google Patents
Suspended isothermal normalizing production line Download PDFInfo
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- CN102399953B CN102399953B CN 201110440307 CN201110440307A CN102399953B CN 102399953 B CN102399953 B CN 102399953B CN 201110440307 CN201110440307 CN 201110440307 CN 201110440307 A CN201110440307 A CN 201110440307A CN 102399953 B CN102399953 B CN 102399953B
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Abstract
The invention discloses a suspended isothermal normalizing production line. The suspended isothermal normalizing production line comprises a heating furnace, a chilling chamber and a slow cooling chamber, wherein the heating furnace and the slow cooling chamber are arranged side by side, and the chilling chamber is arranged on the left side of the heating furnace and the slow cooling chamber. According to the suspended isothermal normalizing production line, workpieces can be in a suspended state all the time in the heat treatment, chilling and slow cooling processes, so that the workpieces are not affected with one another, the heating and cooling processes are faster, the grade of the treated workpieces is better, and the influence of feeding carriers and peripheral workpieces on workpiece heating can be reduced; the moving locus of the workpieces in the chilling chamber is snake-like, so the cooling rate can be increased; a reversing valve and a gas mixing valve arranged in the slow cooling chamber can change the wind direction and the flow rate, so the contact area of the furnace gas and the workpieces is increased, and the workpieces can be uniformly cooled by fully using the furnace gas; and the temperature of the slowly cooled workpieces is strictly controlled by an infrared thermometer, so the processing quality of the isothermal normalizing technology can be improved, the energy is saved, the cost is reduced, the pollution is reduced and the environment is protected.
Description
Technical field
The invention belongs to the heat treatment technics field, particularly relate to a kind of suspended isothermal normalizing production line.
Background technology
At present workpiece normalizing treatment method commonly used is to carry out heat treated in process furnace, then workpiece is cooled to room temperature through over-quenching and annealing process.Known isothermal normalizing feeding style is pusher-tray type and the feeding of charging basket formula, and workpiece is each other stacking contact in the process of normalizing.Because the different workpieces size and number, it is inconsistent often can to occur inside and outside workpiece heating and cooling speed in the isothermal normalizing treating processes, so the problem such as workpiece temperature, hardness be inhomogeneous.And the charging basket feed mechanism is complicated, push-plate and the charging basket material requirements harshness used loading workpiece, some time of heating and cooling process to workpiece is that push-plate and charging basket are carried out heating and cooling, thereby make whole technological process consuming time longer, and the continuous production of push-plate and charging basket feeding is low, the process very complicated, cost is high, production capacity is low, energy consumption is large.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of simple in structure, energy consumption is low and can the quantity-produced suspended isothermal normalizing production line.
In order to achieve the above object, suspended isothermal normalizing production line provided by the invention comprises process furnace, the gentle cold house of quench chamber, and wherein the gentle cold house of process furnace is arranged side by side, and quench chamber is arranged on the left side of the gentle cold house of process furnace; Described process furnace comprises body of heater, trolley track, a plurality of underslung trolley and a plurality of suspension hook; Wherein body of heater is comprised of inner and outer shell, is filled with thermal insulation layer between the inner and outer shell, is respectively equipped with a discharging door and a charging fire door on the left and right side; Trolley track is horizontally set on the inside top surface of body of heater along charging fire door and discharging door line direction; A plurality of underslung trolleys are arranged on the trolley track with mobile mode standoff distance, and a suspension hook is installed on each underslung trolley; Quench chamber comprises chilling case and serpentine track; Wherein the right flank upper and lower of chilling case is formed with respectively a dolly import and dolly outlet, is provided with a plurality of blast inlets on the front end face, is provided with a plurality of air outlets on the aft end face; Serpentine track is arranged on the inside of chilling case, and its two ends lay respectively at dolly import and dolly exit, and is positioned at an end of dolly ingress on the serpentine track and links to each other with trolley track on the process furnace; The slow cooling chamber comprises slow cooling box, track, Gas mixing valve, reversing valve, the first blower fan and the second blower fan; Wherein the slow cooling chamber about end be respectively equipped with an opening for feed and a discharge port; Track is horizontally set on the inside top surface of slow cooling box along opening for feed and discharge port line direction, and the serpentine track in dolly exit is joined on the entrance end of track and the chilling case; Gas mixing valve, reversing valve, the first blower fan and the second blower fan all are arranged on the outside of slow cooling box, wherein reversing valve links to each other with slow cooling box with the second airway by the first airway, join by the 3rd airway and the 4th airway and Gas mixing valve simultaneously, Gas mixing valve is connected with the air outlet with inlet mouth simultaneously; The first blower fan and the second blower fan then are installed in respectively on the 4th airway and the 3rd airway.
An infrared thermometer also is installed on the described slow cooling box, is used for the temperature of workpiece is measured in real time.
Suspended isothermal normalizing production line provided by the invention can make workpiece be in all the time suspension status in heat treatment process, chilling and annealing process, will make like this between workpiece without influencing each other, therefore the heating and cooling process is quicker, and the workpiece product after processing are mutually better, and can reduce feeding carrier and workpiece impact that workpiece is heated on every side; Workpiece is snakelike at the running orbit of quench chamber, therefore can accelerate speed of cooling; The reversing valve of slow cooling indoor location and Gas mixing valve can change wind direction and flow, have therefore increased the contact area of furnace gas and workpiece, and can take full advantage of furnace gas, and workpiece can evenly be cooled off; Workpiece temperature after using infrared thermometer to slow cooling is strictly controlled, so can improve the processing quality of isothermal normalizing technique, saves the energy and reduces cost, reduces and pollutes, protection of the environment.
Description of drawings
Fig. 1 is suspended isothermal normalizing production line structure vertical view provided by the invention.
Fig. 2 is process furnace vertical structure sectional view in the suspended isothermal normalizing production line shown in Fig. 1.
Fig. 3 is quench chamber structure vertical view in the suspended isothermal normalizing production line shown in Fig. 1.
Fig. 4 is slow cooling cell structure synoptic diagram in the suspended isothermal normalizing production line shown in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments suspended isothermal normalizing production line provided by the invention is elaborated.
Such as Fig. 1-shown in Figure 4, suspended isothermal normalizing production line provided by the invention comprises process furnace 1, quench chamber 2 gentle cold houses 3, and wherein process furnace 1 gentle cold house 3 is arranged side by side, and quench chamber 2 is arranged on the left side of process furnace 1 gentle cold house 3; Described process furnace 1 comprises body of heater 4, trolley track 5, a plurality of underslung trolley 6 and a plurality of suspension hook 7; Wherein body of heater 4 is comprised of inner and outer shell, is filled with thermal insulation layer 8 between the inner and outer shell, is respectively equipped with a discharging door 9 and a charging fire door 10 on the left and right side; Trolley track 5 is horizontally set on the inside top surface of body of heater 4 along charging fire door 10 and discharging door 9 line directions; A plurality of underslung trolleys 6 are arranged on the trolley track 5 with mobile mode standoff distance, and a suspension hook 7 is installed on each underslung trolley 6; Quench chamber 2 comprises chilling case 11 and serpentine track 12; Wherein the right flank upper and lower of chilling case 11 is formed with respectively a dolly import 13 and dolly outlet 14, is provided with a plurality of blast inlets 15 on the front end face, is provided with a plurality of air outlets 16 on the aft end face; Serpentine track 12 is arranged on the inside of chilling case 11, and its two ends lay respectively at dolly import 13 and dolly exports 14 places, and is positioned at an end at dolly import 13 places on the serpentine track 12 and links to each other with trolley track 5 on the process furnace 1; Slow cooling chamber 3 comprises slow cooling box 17, track 18, Gas mixing valve 19, reversing valve 20, the first blower fan 21 and the second blower fan 22; Wherein slow cooling chamber 3 about end be respectively equipped with an opening for feed 23 and a discharge port 24; Track 18 is horizontally set on the inside top surface of slow cooling box 17 along opening for feed 23 and discharge port 24 line directions, and the serpentine track 12 that dolly exports 14 places on the entrance end of track 18 and the chilling case 11 is joined; Gas mixing valve 19, reversing valve 20, the first blower fan 21 and the second blower fan 22 all are arranged on the outside of slow cooling box 17, wherein reversing valve 20 links to each other with slow cooling box 17 with the second airway 26 by the first airway 25, join with Gas mixing valve 19 by the 3rd airway 27 and the 4th airway 28 simultaneously, Gas mixing valve 19 is connected with air outlet 30 with inlet mouth 29 simultaneously; The first blower fan 21 and the second blower fan 22 then are installed in respectively on the 4th airway 28 and the 3rd airway 27.
An infrared thermometer 31 also is installed on the described slow cooling box 17, is used for the temperature of workpiece 32 is measured in real time.
Now suspended isothermal normalizing production line production process provided by the invention is described: the lower end that at first in the outside that is positioned at body of heater 4 upper feeding fire doors 10 a plurality of workpiece 32 is suspended on respectively each suspension hook 7 by operator, then workpiece 32 will be mobile from right to left on trolley track 5 with underslung trolley 6, and enter the inside of body of heater 4 by charging fire door 10.The workpiece 32 that is in suspension status will carry out uniform heat treatment process in body of heater 4, then enter into successively the inside of chilling case 11 by discharging door 9 and dolly import 13, and continue mobile in serpentine track 12, in this process, air will blow in the chilling case 11 from blast inlet 15, then discharge from air outlet 16, because workpiece 32 changes its working direction every now and then, thereby can indirectly change the weather side of workpiece 32 in chilling case 11, each surface on the workpiece 32 can both be cooled off fast with uniform speed, obtain thus the structure of homogeneous microstructure.Workpiece 32 after chilling finishes will leave chilling case 11 from dolly outlet 14 with underslung trolley 6, finish thus the process of whole chilling.Workpiece 32 will enter into underslung trolley 6 inside of slow cooling box 17 from opening for feed 23 afterwards.At this moment, air will enter Gas mixing valve 19 from inlet mouth 29 under the suction of the first blower fan 21, change direction of air by this valve, then the 4th airway 28 of flowing through, and by the first blower fan 21 air is blowed to reversing valve 20, through reversing valve 20 commutations by the first airway 25 with air guide slow cooling box 17, the wind direction of air this moment in slow cooling box 17 is for from left to right, air is through the second airway 26 pilot operated directional control valves 20 afterwards, reversing valve 20 again with airflow-reversing to the second blower fan 22.The second blower fan 22 blows to Gas mixing valve 19 with air, relation because of Gas mixing valve 19 valve angles, portion of air will be from the air outlet 30 be discharged, another part is mixed to circulate in the 4th airway 28, arrive the first blower fan 21 by reversing valve 20 commutations, and arrive slow cooling chamber 17 via the second airway 26, this moment, air flow line was for from right to left, and behind the first airway 25, again arrive reversing valve 20, the second blower fan 22 and Gas mixing valve 29, thereby finish the commutation of slow cooling box 17 interior air.Can utilize the method for regulating Gas mixing valve 19 valve angles to control the air quantity at 30 places, air outlet, thereby can realize the circulation of air in whole system.
Claims (2)
1. suspended isothermal normalizing production line, it is characterized in that: described suspended isothermal normalizing production line comprises process furnace (1), the gentle cold house (3) of quench chamber (2), wherein the gentle cold house (3) of process furnace (1) is arranged side by side, and quench chamber (2) is arranged on the left side of the gentle cold house (3) of process furnace (1); Described process furnace (1) comprises body of heater (4), trolley track (5), a plurality of underslung trolley (6) and a plurality of suspension hook (7); Wherein body of heater (4) is comprised of inner and outer shell, is filled with thermal insulation layer (8) between the inner and outer shell, is respectively equipped with a discharging door (9) and a charging fire door (10) on the left and right side; Trolley track (5) is horizontally set on the inside top surface of body of heater (4) along charging fire door (10) and discharging door (9) line direction; A plurality of underslung trolleys (6) are arranged on the trolley track (5) with mobile mode standoff distance, and a suspension hook (7) is installed on each underslung trolley (6); Quench chamber (2) comprises chilling case (11) and serpentine track (12); Wherein the right flank upper and lower of chilling case (11) is formed with respectively a dolly import (13) and dolly outlet (14), is provided with a plurality of blast inlets (15) on the front end face, is provided with a plurality of air outlets (16) on the aft end face; Serpentine track (12) is arranged on the inside of chilling case (11), its two ends lay respectively at dolly import (13) and dolly outlet (14) and locate, and are positioned at a end that dolly import (13) locates on the serpentine track (12) and link to each other with trolley track (5) on the process furnace (1); Slow cooling chamber (3) comprises slow cooling box (17), track (18), Gas mixing valve (19), reversing valve (20), the first blower fan (21) and the second blower fan (22); Wherein slow cooling chamber (3) about end be respectively equipped with an opening for feed (23) and a discharge port (24); Track (18) is horizontally set on the inside top surface of slow cooling box (17) along opening for feed (23) and discharge port (24) line direction, and the serpentine track (12) that dolly outlet (14) is located on the entrance end of track (18) and the chilling case (11) is joined; Gas mixing valve (19), reversing valve (20), the first blower fan (21) and the second blower fan (22) all are arranged on the outside of slow cooling box (17), wherein reversing valve (20) links to each other with slow cooling box (17) with the second airway (26) by the first airway (25), join with Gas mixing valve (19) by the 3rd airway (27) and the 4th airway (28) simultaneously, Gas mixing valve (19) is connected with air outlet (30) with inlet mouth (29) simultaneously; The first blower fan (21) and the second blower fan (22) then are installed in respectively on the 4th airway (28) and the 3rd airway (27).
2. suspended isothermal normalizing production line according to claim 1 is characterized in that: an infrared thermometer (31) also is installed on the described slow cooling box (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110440307 CN102399953B (en) | 2011-12-26 | 2011-12-26 | Suspended isothermal normalizing production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110440307 CN102399953B (en) | 2011-12-26 | 2011-12-26 | Suspended isothermal normalizing production line |
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| Publication Number | Publication Date |
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| CN102399953A CN102399953A (en) | 2012-04-04 |
| CN102399953B true CN102399953B (en) | 2013-05-29 |
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| CN 201110440307 Expired - Fee Related CN102399953B (en) | 2011-12-26 | 2011-12-26 | Suspended isothermal normalizing production line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343216B (en) * | 2013-06-26 | 2015-04-29 | 乳山市黄海汽车配件有限公司 | Suspended heat treatment equipment for forge pieces and heat treatment method thereof |
| CN105002345B (en) * | 2015-07-07 | 2017-05-31 | 长兴县大云电炉制造有限公司 | A kind of continous way hub of motorcycle heat-treatment furnace |
| CN106319175A (en) * | 2016-08-31 | 2017-01-11 | 山东温岭精锻科技有限公司 | Heat treatment process and device of 21NiCrMo5H steel forge pieces |
| CN106893805A (en) * | 2017-03-08 | 2017-06-27 | 上海迅美工业设备有限公司 | A kind of continuous tunnel furnace and heat treatment of workpieces technique |
| CN108660296B (en) * | 2018-08-03 | 2019-07-30 | 天津鼎元热工工程有限公司 | Dual chamber isothermal normalizing air cooling system |
| CN110079661A (en) * | 2019-05-24 | 2019-08-02 | 中冶辽宁德龙钢管有限公司 | Oscillation time-effect method and timeliness movable stand in a kind of straight seam welded pipe production process |
| CN114561519A (en) * | 2022-03-17 | 2022-05-31 | 思博鲍尔(唐山)科技有限公司 | Isothermal normalizing system |
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| JPS5813546U (en) * | 1981-07-21 | 1983-01-27 | 株式会社東芝 | developing device |
| JPH10176217A (en) * | 1997-11-14 | 1998-06-30 | Daido Steel Co Ltd | Annealing furnace |
| JP4190964B2 (en) * | 2003-06-27 | 2008-12-03 | 中外炉工業株式会社 | Pressurized gas cooling device for heat treatment furnace and operation method thereof |
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