CN105441665A - Thermal treatment furnace zero time holding control method and system thereof - Google Patents
Thermal treatment furnace zero time holding control method and system thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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Abstract
For accurately determining that a heated workpiece reaches a zero time holding condition in real time, the invention discloses a thermal treatment furnace zero time holding control method. A current realtime temperature T71 of a temperature detecting element reaches a set processing temperature T0, then a realtime temperature T72 detected by the temperature detecting element is close to or reaches the set processing temperature T0, and the output power of a heater is gradually close to and reaches steady state power P0; when the conditions of a fluctuation temperature difference deltaT and input power of the heater are reached, the workpiece reaches a zero time holding state. The invention also discloses a thermal treatment furnace zero time holding control device for realizing the method, comprising the temperature detecting element mounted in a heating furnace; a temperature detecting module realizes detection on the temperature in the electric heating furnace through the temperature detecting element; the temperature detecting element at least comprises a front temperature detecting element close to the heater and a rear temperature detecting element close to the workpiece. The thermal treatment furnace zero time holding control method and system have the advantages that holding time can be shortened, energy is saved, processing cost is lowered, and product quality is improved.
Description
Technical field
The present invention relates to a kind of thermal treatment control method and system thereof, particularly relate to high-accuracy control method and the system thereof of a kind of thermal treatment " zero-time holding ".
Background technology
In field of machining, thermal treatment is conventional and necessary operation, the general heating uniformity all needing guarantee workpiece, and currently used industrial furnace adds and hankers, technique person often rule of thumb writes heat treated heating process, comprises well heater rapid heating condition, decline close to the heater wattage output after process goal temperature the slow temperature-rise period being warmed up to process goal temperature gradually, the insulating process reaching process goal temperature post-heater employing thermal equilibrium power.But in actual heat-processed, whether inside workpiece temperature reaches the target temperature of processing requirement, do not detect by accurate way, therefore in order to ensure processing requirement, the selection of the soaking time of its heating is all comparatively conservative, generally all partially long, cause energy dissipation, even there is " burning " or " burning not saturating ", cause workpiece to scrap, bring unnecessary financial loss.
Nearly decades, for workpiece heat technique, occur that not only energy-conservation but also timesaving " zero-time holding " is theoretical, but it can not meet actual requirement due to fabrication evaluation means, still there is many shortcomings in practice, be substantially also in theory stage, less in actual applications.
Chinese Patent Application No. 881059188, title " heat treatment of workpieces ' zero-time holding ' puts microcomputer control device ", because it controls according to the mathematical model that " zero-time holding " is theoretical and derived by heat transfer theory, controling parameters is easily subject to the impact of external conditions change, therefore inevitable exist error with the workpiece control temperature of reality, cause workpiece to be heated inequality and " burning not saturating " or " burning " etc., particularly high to heat treatment requirements technique, it can not meet the demands.
Chinese Patent Application No. 951060007, title " controlling instrument for electric-heating technical parameter ", it is arranging controling parameters " the engineering basis for estimation K of samming process
0" time be also set in advance based on experience value, record as its specification sheets and " ensure samming temperature difference △ T=T
1-T
3< 10 DEG C ", so its control temperature difference precision is lower, and fire box temperature T
1reach target value, object heart portion temperature T
3although differ < 10 DEG C with it, object heart portion temperature, still in slow rising, illustrates that material is also in endothermic process, can not judge the temperature condition of material zero-time holding with this.And in actual heat-processed, very difficult or even cannot implement to the detection of workpiece surface and internal temperature, for the technique that processing requirement is high, can not its requirement be met.
Above-mentioned two kinds of technology are all the modes utilizing furnace temperature judgement, the judgement of inside workpiece temperature and power to judge to adopt continuous convergence simultaneously, carry out derivation to the power condition whether reaching zero-time holding to draw, therefore often in actual computer heating control, there is temperature deviation, power deviation, can not reach the heat treated requirement of high precision, this is also the reason that the theoretical temperature measurement control system of existing utilization " zero-time holding " does not obtain effectively promoting.Mainly Control System for Heat Treatment control temperature precision is not high, controling parameters adaptability is not wide for it, detection electrical parameter is complete, it is not high to detect electrical parameter precision, the reasons such as existence and stability is poor, misjudgement erroneous judgement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high precision thermal treatment control method can determining to be reached by heated parts zero-time holding condition exactly, in real time.
The present invention solves its technical problem and adopts heat treatment furnace zero-time holding control method, comprises well heater rapid heating condition, slowly temperature-rise period and insulating process; Its insulating process is as follows,
The real time temperature T that Current Temperatures measuring element detects
71reach setting process temperature T
0, the real time temperature T that rear detector unit detects
72close to or reach setting process temperature T
0, the output rating of well heater progressively close to and reach steady state power P
0;
Control real time temperature T
71and T
72within the scope of fluctuation temperature difference △ T, detection and control is carried out to the output rating of well heater, n Temperature Measure Control cycle T
kinside meet the output rating condition of following well heater:
ΔP
TKi＝P
0-P
TKi
Detect that well heater is in each Temperature Measure Control cycle T simultaneously
kinterior average output power P
tkiaround steady state power P
0upper and lower fluctuating error is less than X%; P
0it is the average power content of multiple Temperature Measure Control cycle average output power;
When meeting above-mentioned fluctuation temperature difference △ T and heater wattage output condition, workpiece reaches zero-time holding state.
Further, fluctuation temperature difference △ T controls at ± 0.5 ~ 5 DEG C, and well heater 6 output power error X% controls≤0.5 ~ 10%; Preferably, fluctuation temperature difference △ T controls at ± 0.5 ~ 2 DEG C, and well heater 6 output power error X% controls 0.5 ~ 2%.
The real time temperature T that Current Temperatures measuring element detects
71, the real time temperature T that rear detector unit detects
72close to or reach setting process temperature T
0after, the real time temperature T that front detector unit detects
71with the real time temperature T that rear detector unit detects
72there is deviation.
Described process furnace is electrical heater, and electrical heater output power comprises following several mode:
(1) contactor break-make mode is adopted to control, and by time scale determination output rating;
(2) silicon control zero-cross is adopted to control, PWM mode uniform interchange break-make ratio-dependent output rating or current signal is obtained to the direct filtering of electronic current transducer current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power;
(3) adopt phase shift system to control silicon controlled rectifier, gather the direct filtering of electronic current transducer current signal and obtain current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power;
(4) linear accurate phase shift system is adopted to control silicon controlled rectifier, power P is AC current-voltage product, by its linearization process, obtain θ=F (P) linearization equations, gather the direct filtering of electronic current transducer current signal and obtain current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power.
All right, described process furnace is gas furnace, and gas horsepower controls to adopt following two kinds of modes:
(1) break-make combustion gases type of heating: generally leave ever-burning flame and ignite, controls heating power by make-and-break time ratio, gathers period ratio, obtains output rating, time accurate, also will ensure bleed pressure factor;
(2) combustion gas flow mode is regulated: detect or calculate gas flow quality, obtaining output rating.
Also be provided with and patrol and examine temperature sensor detection by the surface temperature of heated parts and other furnace inner space point temperature.
The present invention additionally provides a kind of heat treatment furnace zero-time holding Controlling System realizing heat treatment furnace zero-time holding control method simultaneously, comprises temperature detecting module, power control unit, heater power detection module; The well heater installed in process furnace, the workpiece by heating, detector unit, temperature detecting module realizes detecting the temperature in electrical heater by detector unit; Described detector unit at least comprises the front detector unit near well heater and the rear detector unit near workpiece.
Further, described front detector unit and rear detector unit are arranged on the same straight line in heat flow direction, rear detector unit can be one or more, and preferred amount is 2 ~ 4.
The center of well heater, front detector unit, rear detector unit and workpiece or process furnace lumen centers are on the same line.
Heat flow directions different in process furnace arranges many group front detector unit, rear detector unit respectively.
Adopt heat treatment furnace zero-time holding control method of the present invention and device thereof, the internal temperature of workpiece can be detected in time, the error of observed temperature and " zero-time holding " target temperature can≤1 DEG C, prevent from burning not saturating and " burning ", shorten soaking time, save energy, cuts down finished cost, and improves the quality of products.
Accompanying drawing explanation
Fig. 1 is that measuring element of the present invention arranges schematic diagram;
Fig. 2 is temperature and the heating power curve schematic diagram of each check point;
Fig. 3 is the control chart of this electrical heater;
Shown in figure: upper computer 1, lower computer 2, temperature detecting module 21, power control unit 22, detecting voltage by three phase module 23, three-phase current detection module 24, patrol and examine thermal module 25, heater power detection module 26, process furnace 3, workpiece 4, power power element 5, well heater 6, front detector unit 71, rear detector unit 72, patrols and examines temperature sensor 73.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Heat treatment furnace zero-time holding Controlling System of the present invention, comprises temperature detecting module 21, power control unit 22, heater power detection module 26.Temperature detecting module 21 realizes detecting the temperature in electrical heater 3 by detector unit, and the output rating of heater power detection module 26 pairs of well heaters 6 detects, and the output rating of power control unit 22 pairs of well heaters 6 controls.
As shown in Figure 1, well heater 3 is installed in process furnace 6, is placed in process furnace 3 by the workpiece 4 heated.Described temperature detecting module 21 realizes detecting the temperature in electrical heater 3 by least two detector units be arranged in process furnace 3.Detector unit at least comprises the front detector unit 71 near well heater 6 and the rear detector unit 72 near workpiece 4.Because heat conduction direction is from well heater 6 to by heated parts 4, because of the temperature T before this detected by detector unit 71
71in workpiece 4 temperature-rise period, by the temperature T detected higher than rear detector unit 72
72, its heating curve as shown in Figure 2.
As shown in Figure 2, through t heat-up time
0after, the temperature T at front detector unit 71 place
71reach the thermal treatment Heating temperature T of setting
0, and also do not reach T due to the internal temperature of workpiece 4
0, therefore workpiece 4 is still in the heat absorption temperature rise period, and the heat in process furnace 3 flows to workpiece 4, the temperature T that the later detector unit 72 of institute detects
72also just also T is not reached
0.
Through t heat-up time
1after, the temperature T that rear detector unit 72 detects
72close to or reach T
0, the temperature substantially constant in process furnace 3 is described, heat no longer flows, and namely workpiece 4 no longer absorbs heat, and its internal temperature should reach design temperature T
0.But because workpiece 4 may exist error delayed and affected by environment in actual temperature-rise period, whether the internal temperature of workpiece 4 truly reaches heat treated design temperature T
0, also need further to examine and check, therefore present invention also offers heat treatment furnace zero-time holding control method.
Because front detector unit 71 and rear detector unit 72 need to detect heat flow situation, therefore should be arranged on the same straight line in heat flow direction, as shown in Figure 1, the one group of measuring element be made up of front detector unit 71, rear detector unit 72 and well heater 6, workpiece 4 center are on the same line, when workpiece 4 quantity is more or center is not easy to determine, front detector unit 71, rear detector unit 72, well heater 6 and process furnace lumen centers are on the same line.Front detector unit 71 and rear detector unit 72 can adopt " a kind of thermopair " as the patent No. 201420618854.1, the more compact and better effects if of this spline structure.
Also in order to improve detected result more accurately, all right multiple step-by-step arrangement of detector unit after in one group of measuring element, as shown in left side in Fig. 1, detector unit 72a also set up between front detector unit 71, rear detector unit 72 after.Rear detector unit 72 preferred amount is 2 ~ 4.At process furnace 3 during comparatively large or heat treatment of workpieces temperature requirement height, in order to improve detection and control precision, detector unit 71, rear detector unit 72 before group more than heat flow directions different in process furnace 3 is arranged respectively, as shown in Figure 1, detector unit 71, rear detector unit 72 before the left and right sides of workpiece is provided with one group respectively.
Heat treatment furnace zero-time holding control method of the present invention is as follows:
A, well heater heating with full power are rapidly heated: workpiece 4 is placed in process furnace 3, and heater 6 also exports thermal source with output rating Pg; By front detector unit 71, rear detector unit 72 detects real time temperature T respectively
71and T
72.Described Pg is the output rating of the conventional heating with full power according to the formulation of workpiece heat processing requirement or the required well heater 6 of controlled slope heating.
B, heater wattage output downcurve heat up: when through warm-up time t
p, workpiece 4 temperature is close to T
0time, well heater 6 is according to the output rating downcurve P of well heater 6
1quantity of heat given up heated parts.
When through warm-up time t
0, front detector unit 71, the real time temperature T detected
71reach T
0; When through warm-up time t
1the real time temperature T that rear detector unit 72 detects respectively
72also T is reached
0, the output rating of well heater 6 progressively close to and reach steady state power P
0.
C, control real time temperature T
71and T
72within the scope of fluctuation temperature difference △ T, detection and control is carried out to the output rating of well heater 6, n Temperature Measure Control cycle T
kinside meet following well heater 6 output rating condition:
ΔP
TKi＝P
0-P
TKi
Fluctuation temperature difference △ T and well heater 6 output power error X% is arranged according to heat treatment of workpieces processing requirement.
The average output power P in each Temperature Measure Control cycle of well heater 6 detected simultaneously
tkiaround steady state power P
0fluctuate up and down, n Temperature Measure Control cycle T
kthe change of interior appearance+△ P and-△ P, namely existing △ P > 0, has again △ P < 0.
When meeting above-mentioned fluctuation temperature difference △ T and well heater 6 output rating condition, illustrate that workpiece no longer absorbs heat, well heater 6 output rating P
0balance with the dissipate energy of body of heater, workpiece reaches zero-time holding state.
When fluctuation temperature difference △ T controls at ± 0.5 ~ 5 DEG C, well heater 6 output rating by mistake X% controls generally just can meet heat treatment requirements≤0.5 ~ 10% time.For the workpiece that heat treatment requirements is high, fluctuation temperature difference △ T controls at ± 0.5 ~ 2 DEG C, and well heater 6 output power error X% controls 0.5 ~ 2%.
Due to front detector unit 71, rear detector unit 72 is arranged on from well heater 6 distance different with workpiece 4, and the influence degree being therefore controlled well heater 6 is different, Current Temperatures measuring element real time temperature T
71, rear detector unit real time temperature T
72close to or reach setting process temperature T
0, the deviation allowed according to process furnace characteristic and processing requirement and there is difference, but the fluctuation temperature difference △ T of front detector unit 71
71with the fluctuation temperature difference △ T of rear detector unit 72
72all should control at ± 0.5 ~ 5 DEG C.Such as, due to process furnace shape, structure difference, the impact of heater performance change or workpiece shapes, putting position etc., the setting process temperature T of front detector unit 71
01with the setting process temperature T of rear detector unit 72
02there is deviation, but the requirement of temperature homogeneity and thermal treatment temp in body of heater can be met, that is to say the detection real time temperature of the detection real time temperature of rear detector unit 72 close to front detector unit 71, such as the setting process temperature T of front detector unit 71
01be 800 DEG C, the setting process temperature T of rear detector unit 72
02be 798 DEG C, but real time temperature T
71and T
72the fluctuation temperature difference all in span of control, the heat absorption basic equalization of workpiece is also just described.
Temperature Measure Control cycle T
kpreferred value: n=3 ~ 15, T
k=8 ~ 60 seconds.
Embodiment one
Process furnace is electrical heater, and as shown in Figure 3, comprise upper computer 1 and lower computer 2, described lower computer 2 comprises temperature detecting module 21, power control unit 22, detecting voltage by three phase module 23 and three-phase current detection module 24 and forms heater power detection module 26; Data exchange between described upper computer 1 and lower computer 2, upper computer 1 can also carry out Long-distance Control.
Each heat phase device 6 that described power control unit 22 sends signal control electrical heater to power power element 5 in each temperature control cycle works.Each heat phase device 6 is formed in parallel by multiple heating unit, such as: adopt multiple heater strip or the parallel connection of heating carbon-point, described power power element 5 can select alternating current contactor, zero passage silicon controlled module, phase shift trigger unit for thyristor or IGBT DC Module, and described power control unit 22 is equipped with corresponding drive pattern control power power element 5 and works.Described detecting voltage by three phase module 23 detects the input voltage of each heat phase device 6; According to the precision that will arrive, described detecting voltage by three phase module 23 can select 10-24 A/D conversion chips, common voltage table or accurate voltage table.Described three-phase current detection module 24 detects the working current of each heat phase device 6.According to the precision that will arrive, described three-phase current detection module 24 selects employing 10-24 A/D conversion chips, common current table or precision ammeter.
For electrical heater, gather three-phase voltage and electric current, determine output rating, output rating comprises following several control mode:
1, contactor break-make mode is adopted to control, further by time scale determination output rating.
2, silicon control zero-cross is adopted to control, PWM mode uniform interchange break-make ratio can determine output rating, and another kind of method obtains current signal to the direct filtering of electronic current transducer current signal exactly, is multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power;
3, adopt phase shift system to control silicon controlled rectifier, gather the direct filtering of electronic current transducer current signal and obtain current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power;
4, adopt linear accurate phase shift system to control silicon controlled rectifier, horse-power formula P=VI, power P is AC current-voltage product, nonlinear, after its linearization process, obtain θ=F (P) linearization equations, control furnace temperature more accurate than simple phase shift system.Gather the direct filtering of electronic current transducer current signal and obtain current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power.
Embodiment two
When process furnace is gas furnace, comprise upper computer and lower computer, described lower computer comprises temperature detecting module, power control unit, gas horsepower detection module; Carry out data exchange between described upper computer and lower computer, upper computer can also carry out Long-distance Control.
Gas horsepower controls to adopt following two kinds of modes:
1, break-make combustion gases type of heating: generally leave ever-burning flame and ignite, controls heating power by make-and-break time ratio, gathers period ratio, obtains output rating, time accurate, also will detect bleed pressure, ensures bleed pressure factor.
2, combustion gas flow mode is regulated: detect or calculate gas flow quality, obtaining output rating.
In above-mentioned two kinds of embodiments, when being large-scale workpiece by heated parts 4, only adopt temperature detecting module 21 detect electrical heater furnace wall 3 and by between heated parts 4 along the temperature of at least two points on heat conduction direction, can't guarantee that in-furnace temperature reaches thermal equilibrium completely, zero-time holding state is reached by heated parts 4, as preferred embodiment, described lower computer 2 also comprises patrols and examines thermal module 25, described thermal module of patrolling and examining comprises multi channel testing temperature sensor, each road is patrolled and examined temperature sensor and is detected by the surface temperature of each point on heated parts 4 and other furnace inner space point temperature.No. 32 temperature sensors can be adopted at most to detect large-scale by the surface temperature of heated parts 4 and other furnace inner space point temperature.
The upper computer of native system, adopts PC computer, also can adopt PLC, or develop special micro-chip as upper computer.
Upper computer and the next module 21,22,23,24,25, according to customer need, are selected combination to make Single Controller, are realized the extraordinary controller of the principle of the invention by native system.
Claims (10)
1. heat treatment furnace zero-time holding control method, comprises well heater rapid heating condition, slowly temperature-rise period and insulating process; It is characterized in that: its insulating process is as follows,
The real time temperature T that Current Temperatures measuring element (71) detects
71reach setting process temperature T
0, the real time temperature T that rear detector unit (72) detects
72close to or reach setting process temperature T
0after, the output rating of well heater (6) progressively close to and reach steady state power P
0;
Control real time temperature T
71and T
72within the scope of fluctuation temperature difference △ T, detection and control is carried out to the output rating of well heater (6), n Temperature Measure Control cycle T
kinside meet the output rating condition of following well heater (6):
ΔP
TKi＝P
0-P
TKi
The average output power P in each Temperature Measure Control cycle of well heater (6) detected simultaneously
tkiaround steady state power P
0fluctuate up and down;
When meeting above-mentioned fluctuation temperature difference △ T and well heater (6) output rating condition, workpiece reaches zero-time holding state.
2. heat treatment furnace zero-time holding control method as claimed in claim 1, is characterized in that, fluctuation temperature difference △ T controls at ± 0.5 ~ 5 DEG C, and well heater (6) output power error X% controls≤0.5 ~ 10%; Preferably, fluctuation temperature difference △ T controls at ± 0.5 ~ 2 DEG C, and well heater (6) output power error X% controls 0.5 ~ 2%.
3. heat treatment furnace zero-time holding control method as claimed in claim 1 or 2, is characterized in that, the real time temperature T that Current Temperatures measuring element detects
71, the real time temperature T that rear detector unit detects
72close to or reach setting process temperature T
0after, the real time temperature T that front detector unit detects
71with the real time temperature T that rear detector unit detects
72there is deviation.
4. heat treatment furnace zero-time holding control method as claimed in claim 1 or 2, it is characterized in that, described process furnace is electrical heater, and electrical heater output power comprises following several mode:
(1) contactor break-make mode is adopted to control, and by time scale determination output rating;
(2) silicon control zero-cross is adopted to control, PWM mode uniform interchange break-make ratio-dependent output rating or current signal is obtained to the direct filtering of electronic current transducer current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power;
(3) adopt phase shift system to control silicon controlled rectifier, gather the direct filtering of electronic current transducer current signal and obtain current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power;
(4) linear accurate phase shift system is adopted to control silicon controlled rectifier, power P is AC current-voltage product, by its linearization process, obtain θ=F (P) linearization equations, gather the direct filtering of electronic current transducer current signal and obtain current signal, be multiplied by corresponding phase voltage, obtain three phase power respectively, then summation obtains total power.
5. heat treatment furnace zero-time holding control method as claimed in claim 1 or 2, it is characterized in that, described process furnace is gas furnace, and gas horsepower controls to adopt following two kinds of modes:
(1) break-make combustion gases type of heating: generally leave ever-burning flame and ignite, controls heating power by make-and-break time ratio, gathers period ratio, obtains output rating, time accurate, also will ensure bleed pressure factor;
(2) combustion gas flow mode is regulated: detect or calculate gas flow quality, obtaining output rating.
6. heat treatment furnace zero-time holding control method as claimed in claim 1, is characterized in that, is also provided with and patrols and examines temperature sensor (73) detection by the surface temperature of heated parts (4) and other furnace inner space point temperature.
7. realize the heat treatment furnace zero-time holding Controlling System of heat treatment furnace zero-time holding control method as claimed in claim 1, comprise temperature detecting module (21), power control unit (22), heater power detection module (26); At the well heater (6) of the middle installation of process furnace (3), by the workpiece (4), the detector unit that heat, temperature detecting module (21) realizes detecting the temperature in electrical heater (3) by detector unit; It is characterized in that, described detector unit at least comprises the front detector unit (71) near well heater (6) and the rear detector unit (72) near workpiece (4).
8. heat treatment furnace zero-time holding Controlling System as claimed in claim 7, it is characterized in that, described front detector unit (71) and rear detector unit (72) are arranged on the same straight line in heat flow direction; Rear detector unit is one or more, and preferred amount is 2 ~ 4.
9. heat treatment furnace zero-time holding Controlling System as described in claim 7 or 8, it is characterized in that, the center of well heater (6), front detector unit (71), rear detector unit (72) and workpiece (4) or process furnace lumen centers are on the same line.
10. heat treatment furnace zero-time holding Controlling System as claimed in claim 9, it is characterized in that, detector unit (71), rear detector unit (72) before group more than heat flow directions different in process furnace (3) is arranged respectively.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849933A (en) * | 2019-11-25 | 2020-02-28 | 王晓民 | Intelligent heating and thorough-burning detection system for heat-treated parts |
| CN112513770A (en) * | 2018-08-10 | 2021-03-16 | 唯希科技 | Industrial temperature control device with functions of automatically correcting heat preservation time and self-diagnosing heating abnormity and method thereof |
| CN113481361A (en) * | 2021-06-25 | 2021-10-08 | 中航工程集成设备有限公司 | Proportional cooling control method for heat treatment furnace of differential heating process |
| CN113625801A (en) * | 2021-09-03 | 2021-11-09 | 罗定职业技术学院 | Temperature control method of heating furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030149A (en) * | 1988-07-13 | 1989-01-04 | 铁道部成都机车车辆工厂 | Heat treatment of workpieces " zero insulation " some microcomputer control device |
| CN1160083A (en) * | 1996-03-15 | 1997-09-24 | 张龙 | Method for automatic determination and control of heating time during heat treatment |
| EP1208334A1 (en) * | 1999-06-16 | 2002-05-29 | David Seitz | Fluid heating and control system |
| CN102876881A (en) * | 2012-10-12 | 2013-01-16 | 首钢京唐钢铁联合有限责任公司 | Method for shortening soaking time of plain carbon steel in heating furnace |
| CN104328273A (en) * | 2014-11-24 | 2015-02-04 | 湖北江山重工有限责任公司 | Control method for temperature of thermal treatment heating furnace |
| CN205275657U (en) * | 2016-01-15 | 2016-06-01 | 成都工业学院 | Heat treating zero heat preservation control system in stove |
-
2016
- 2016-01-15 CN CN201610028901.0A patent/CN105441665B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030149A (en) * | 1988-07-13 | 1989-01-04 | 铁道部成都机车车辆工厂 | Heat treatment of workpieces " zero insulation " some microcomputer control device |
| CN1160083A (en) * | 1996-03-15 | 1997-09-24 | 张龙 | Method for automatic determination and control of heating time during heat treatment |
| EP1208334A1 (en) * | 1999-06-16 | 2002-05-29 | David Seitz | Fluid heating and control system |
| CN102876881A (en) * | 2012-10-12 | 2013-01-16 | 首钢京唐钢铁联合有限责任公司 | Method for shortening soaking time of plain carbon steel in heating furnace |
| CN104328273A (en) * | 2014-11-24 | 2015-02-04 | 湖北江山重工有限责任公司 | Control method for temperature of thermal treatment heating furnace |
| CN205275657U (en) * | 2016-01-15 | 2016-06-01 | 成都工业学院 | Heat treating zero heat preservation control system in stove |
Non-Patent Citations (2)
| Title |
|---|
| 李安铭: "零保温热处理对27SiMn钢组织性能的影响", 《煤炭学报》 * |
| 王学前: "奥氏体状态控制及零保温加热工艺", 《四川工业学院学报》 * |
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| CN112513770A (en) * | 2018-08-10 | 2021-03-16 | 唯希科技 | Industrial temperature control device with functions of automatically correcting heat preservation time and self-diagnosing heating abnormity and method thereof |
| EP3637219A4 (en) * | 2018-08-10 | 2021-04-21 | V & C-Tech | Industrial temperature control device having automatic soak time correction and self-diagnosing heating anomaly function, and method therefor |
| CN110849933A (en) * | 2019-11-25 | 2020-02-28 | 王晓民 | Intelligent heating and thorough-burning detection system for heat-treated parts |
| CN113481361A (en) * | 2021-06-25 | 2021-10-08 | 中航工程集成设备有限公司 | Proportional cooling control method for heat treatment furnace of differential heating process |
| CN113625801A (en) * | 2021-09-03 | 2021-11-09 | 罗定职业技术学院 | Temperature control method of heating furnace |
| CN113625801B (en) * | 2021-09-03 | 2022-12-27 | 罗定职业技术学院 | Temperature control method of heating furnace |
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