CN116179839B - Cooling rate control method, device and system for heat treatment - Google Patents
Cooling rate control method, device and system for heat treatment Download PDFInfo
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- CN116179839B CN116179839B CN202211383196.8A CN202211383196A CN116179839B CN 116179839 B CN116179839 B CN 116179839B CN 202211383196 A CN202211383196 A CN 202211383196A CN 116179839 B CN116179839 B CN 116179839B
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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
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
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Abstract
The invention discloses a cooling rate control method, a device and a system for heat treatment, which comprise the following steps: establishing a product cooling database, wherein the product cooling database comprises spraying rates corresponding to temperature falling rates under standard product thickness, respectively setting corresponding spraying rates for each product partition according to the temperature falling rates, cooling the product partition, acquiring temperature data of different product partitions through a temperature detection device, and obtaining the temperature falling rates of each product partition according to the temperature data; judging whether the temperature falling rate of each product partition is within a temperature falling rate threshold value range according to the temperature falling rate of each product partition, and if so, acquiring the partition temperature difference between adjacent product partitions to enable the partition temperature difference between the adjacent product partitions to be within a temperature difference threshold value; and if the temperature of all the product subareas is reduced to the set cooling temperature, stopping spraying, and finishing the cooling of the product.
Description
Technical Field
The invention relates to the field of cooling, in particular to a cooling rate control method, a device and a system for heat treatment.
Background
The cooling after heat treatment and heat preservation is a key step in the heat treatment process of the parts, the conventional use means is immersed in water or integral spraying treatment, and if the treatment is improper, the parts are directly scrapped with high probability. Some large-sized special products have the following defects due to special specifications and structures, such as cylindrical parts with large caliber and long length, or large parts with thin wall thickness and complex structure, and the like, and the conventional heat treatment cooling means are used:
1. because of large specification, the uniformity of integral cooling is difficult to realize by adopting a drainage or conventional spraying mode, and the integral cooling is inconsistent, so that the performance is uneven, and even an ideal microstructure cannot be obtained;
2. due to the complex and special structure, the local product partition can not be cooled by heat dissipation due to the high temperature;
3. the conventional means cannot learn the specific data of cooling, often meets the performance requirement, and can not effectively help the control of the material performance.
And due to the limitation of the specification of the product, the conventional heat treatment cooling means are difficult to realize or have too high realization cost, thereby resulting in low economic benefit. Therefore, a device, a system and a method for controlling the cooling rate of the heat treatment are needed to solve the above problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a cooling rate control method for heat treatment, which comprises the following steps:
step one, a product cooling database is established, wherein the product cooling database comprises spraying rates corresponding to temperature reduction rates under standard product thickness; dividing a product to be cooled into different product partitions, setting temperature dropping rates, respectively setting corresponding spraying rates for each product partition according to the temperature dropping rates, cooling the product partitions, acquiring temperature data of the different product partitions through a temperature detection device, and obtaining the temperature dropping rates of each product partition according to the temperature data;
judging whether the temperature falling rate of each product partition is within a temperature falling rate threshold value range according to the temperature falling rate of each product partition, and if so, entering a step four; if the temperature is not within the temperature falling rate threshold range, entering a step III;
step three, according to the difference value of the obtained temperature drop rate and the set temperature drop rate, the spray rate after feedback control of the spray adjusting module is obtained, the spray rate of the spray header is controlled according to the feedback control parameter, the temperature drop rate of the product partition is within the set temperature drop threshold range, and the step four is entered;
step four, acquiring temperature data of each product partition, acquiring a partition temperature difference value between adjacent product partitions, and if the partition temperature difference value is larger than a set temperature difference value threshold value, adjusting the spraying rate of the product partition with a high temperature value within a temperature falling rate threshold value range to enable the partition temperature difference value between the adjacent product partitions to be within the temperature difference value threshold value;
and fifthly, stopping spraying if the temperature of all the product subareas is reduced to the set cooling temperature, and finishing the cooling of the product.
Further, the step of respectively setting the corresponding spraying rates for each product partition according to the temperature decrease rate comprises the step of obtaining the corresponding spraying rates according to the set temperature decrease rate and the thicknesses of the product partitions：
Wherein n is the product partition, V is the standard spraying rate corresponding to the temperature drop rate under the standard thickness, and D is the standard product thickness.
Further, the step of obtaining the spray rate after feedback control by the spray adjustment module according to the obtained difference between the temperature decrease rate and the set temperature decrease rate comprises the steps ofAnd obtaining the spray rate variation:
a cooling rate control device for heat treatment applying a cooling rate control method for heat treatment comprises a temperature detection device, a temperature monitoring terminal, a spray adjusting device, a central control device, a measurement result output device, a communication device and a display module; the temperature detection device, the temperature monitoring terminal, the spray adjusting device, the measurement result output device, the communication device and the display module are respectively connected with the central control device;
the temperature detection device is used for detecting the temperature of a product to be cooled;
the temperature monitoring terminal is used for collecting temperature data of a product to be cooled in real time;
the spraying adjusting device is used for providing water required by cooling each product partition of the product to be cooled and adjusting the spraying rate;
the measurement result output device is used for outputting a temperature measurement result of the product to be cooled.
Preferably, the temperature detection device comprises a temperature sensor, a first processor and a first data memory;
the first processor is respectively connected with the temperature sensor, the first data memory and the central control device;
the temperature sensor is used for detecting actual environmental temperature information of an application scene of a product to be cooled;
the first data memory is used for storing threshold environmental temperature information required by the application scene of the product to be cooled.
Preferably, the spray adjusting device comprises a water pumping device, a second processor, an adjusting valve and a spray header.
The water pumping device is used for pumping water required by spray cooling from the water tank and outputting the water to the regulating valve;
the second processor is used for receiving signals of the central control device and controlling each regulating valve according to the signals;
the regulating valve controls the spray header of the product partition to finish spray cooling and temperature control of each product partition of the product to be cooled;
the spray header is used for cooling the spray water of each product partition required to be cooled.
A cooling rate control system for heat treatment applying the cooling rate control device for heat treatment, comprising a management module and a product cooling database server; the management module and the product cooling database server are respectively in communication connection with the communication device; the management module is in communication connection with the product cooling database server.
The beneficial effects of the invention are as follows: according to the scheme, after heat treatment and heat preservation of large-scale special products, the limitation of the field and the specifications of heat treatment target products can be eliminated, synchronous cooling can be accurately carried out on each product partition of the part, and continuous detection feedback and control adjustment can be carried out, so that the heat treatment cooling effect of the part is ensured, the performance of the part is ensured to meet the use requirement, and important technical support is provided for the performance control of research materials.
Drawings
FIG. 1 is a flow chart of a cooling rate control method for heat treatment;
FIG. 2 is a schematic diagram of a cooling rate control apparatus for heat treatment.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
For the purpose of making the technical solution and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention. It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
As shown in fig. 1, a cooling rate control method for heat treatment includes the steps of:
step one, a product cooling database is established, wherein the product cooling database comprises spraying rates corresponding to temperature reduction rates under standard product thickness; dividing a product to be cooled into different product partitions, setting temperature dropping rates, respectively setting corresponding spraying rates for each product partition according to the temperature dropping rates, cooling the product partitions, acquiring temperature data of the different product partitions through a temperature detection device, and obtaining the temperature dropping rates of each product partition according to the temperature data;
judging whether the temperature falling rate of each product partition is within a temperature falling rate threshold value range according to the temperature falling rate of each product partition, and if so, entering a step four; if the temperature is not within the temperature falling rate threshold range, entering a step III;
step three, according to the difference value of the obtained temperature drop rate and the set temperature drop rate, the spray rate after feedback control of the spray adjusting module is obtained, the spray rate of the spray header is controlled according to the feedback control parameter, the temperature drop rate of the product partition is within the set temperature drop threshold range, and the step four is entered;
step four, acquiring temperature data of each product partition, acquiring a partition temperature difference value between adjacent product partitions, and if the partition temperature difference value is larger than a set temperature difference value threshold value, adjusting the spraying rate of the product partition with a high temperature value within a temperature falling rate threshold value range to enable the partition temperature difference value between the adjacent product partitions to be within the temperature difference value threshold value;
and fifthly, stopping spraying if the temperature of all the product subareas is reduced to the set cooling temperature, and finishing the cooling of the product.
Further, the step of respectively setting the corresponding spraying rates for each product partition according to the temperature decrease rate comprises the step of obtaining the corresponding spraying rates according to the set temperature decrease rate and the thicknesses of the product partitions：
Wherein n is the product partition, V is the standard spraying rate corresponding to the temperature drop rate under the standard thickness, and D is the standard product thickness.
Further, the step of obtaining the spray rate after feedback control by the spray adjustment module according to the obtained difference between the temperature decrease rate and the set temperature decrease rate comprises the steps ofAnd obtaining the spray rate variation:
a cooling rate control device for heat treatment applying a cooling rate control method for heat treatment comprises a temperature detection device, a temperature monitoring terminal, a spray adjusting device, a central control device, a measurement result output device, a communication device and a display module; the temperature detection device, the temperature monitoring terminal, the spray adjusting device, the measurement result output device, the communication device and the display module are respectively connected with the central control device; the communication device is used for communicating with the product cooling database and acquiring related information.
The temperature detection device is used for detecting the temperature of a product to be cooled;
the temperature monitoring terminal is used for collecting temperature data of a product to be cooled in real time;
the spraying adjusting device is used for providing water required by cooling each product partition of the product to be cooled and adjusting the spraying rate;
the measurement result output device is used for outputting a temperature measurement result of the product to be cooled.
Preferably, the temperature detection device comprises a temperature sensor, a first processor and a first data memory;
the first processor is respectively connected with the temperature sensor, the first data memory and the central control device;
the temperature sensor is used for detecting actual environmental temperature information of an application scene of a product to be cooled;
the first data memory is used for storing threshold environmental temperature information required by the application scene of the product to be cooled.
Preferably, the spray adjusting device comprises a water pumping device, a second processor, an adjusting valve and a spray header.
The water pumping device is used for pumping water required by spray cooling from the water tank and outputting the water to each regulating valve;
the second processor is used for receiving signals of the central processing unit and controlling each regulating valve according to the signals;
each regulating valve controls a spray header of a product partition to be sprayed so as to finish spray cooling and temperature control of each product partition of the product to be cooled;
the spray header is used for cooling the spray water of each product partition required to be cooled.
A cooling rate control system for heat treatment applying the cooling rate control device for heat treatment, comprising a management module and a product cooling database server; the management module and the product cooling database server are respectively in communication connection with the communication device; the management module is in communication connection with the product cooling database server.
The management module is used for managing data in the product cooling database server and data uploaded by the cooling rate control device for heat treatment by management staff.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (4)
1. A cooling rate control method for heat treatment, comprising the steps of:
step one, a product cooling database is established, wherein the product cooling database comprises spraying rates corresponding to temperature reduction rates under standard product thickness; dividing a product to be cooled into different product partitions, setting temperature dropping rates, respectively setting corresponding spraying rates for each product partition according to the temperature dropping rates, cooling the product partitions, acquiring temperature data of the different product partitions through a temperature detection device, and obtaining the temperature dropping rates of each product partition according to the temperature data;
judging whether the temperature falling rate of each product partition is within a temperature falling rate threshold value range according to the temperature falling rate of each product partition, and if so, entering a step four; if the temperature is not within the temperature falling rate threshold range, entering a step III;
step three, according to the difference value of the obtained temperature drop rate and the set temperature drop rate, the spray rate after feedback control of the spray adjusting module is obtained, the spray rate of the spray header is controlled according to the feedback control parameter, the temperature drop rate of the product partition is within the set temperature drop threshold range, and the step four is entered;
step four, acquiring temperature data of each product partition, acquiring a partition temperature difference value between adjacent product partitions, and if the partition temperature difference value is larger than a set temperature difference value threshold value, adjusting the spraying rate of the product partition with a high temperature value within a temperature falling rate threshold value range to enable the partition temperature difference value between the adjacent product partitions to be within the temperature difference value threshold value;
fifthly, stopping spraying if all the product partition temperatures are reduced to the set cooling temperature, and finishing product cooling;
the corresponding spraying rates are respectively set for each product partition according to the temperature dropping rate, and the corresponding spraying rates are obtained according to the set temperature dropping rate and the thickness of the product partition：
Wherein n is the product partition, V is the standard spraying rate corresponding to the temperature dropping rate under the standard thickness, and D is the standard product thickness;
the spray rate after feedback control of the spray adjusting module is obtained according to the difference value of the obtained temperature falling rate and the set temperature falling rate, and the spray rate comprises the difference value according to the temperature falling rate and the set temperature falling rateAnd obtaining the spray rate variation:
。
2. a cooling rate control device for heat treatment applying a cooling rate control method for heat treatment according to claim 1, characterized by comprising a temperature detection device, a temperature monitoring terminal, a spray adjusting device, a central control device, a measurement result output device, a communication device, a display module; the temperature detection device, the temperature monitoring terminal, the spray adjusting device, the measurement result output device, the communication device and the display module are respectively connected with the central control device;
the temperature detection device is used for detecting the temperature of a product to be cooled;
the temperature monitoring terminal is used for collecting temperature data of a product to be cooled in real time;
the spraying adjusting device is used for providing water required by cooling each product partition of the product to be cooled and adjusting the spraying rate;
the measurement result output device is used for outputting a temperature measurement result of the product to be cooled.
3. A cooling rate control apparatus for heat treatment according to claim 2, wherein the temperature detecting means includes a temperature sensor, a first processor, a first data memory;
the first processor is respectively connected with the temperature sensor, the first data memory and the central control device;
the temperature sensor is used for detecting actual environmental temperature information of an application scene of a product to be cooled;
the first data memory is used for storing threshold environmental temperature information required by the application scene of the product to be cooled.
4. A cooling rate control device for heat treatment according to claim 3, wherein the spray adjusting means comprises a water pumping means, a second processor, an adjusting valve, a shower head;
the water pumping device is used for pumping water required by spray cooling from the water tank and outputting the water to the regulating valve;
the second processor is used for receiving signals of the central control device and controlling each regulating valve according to the signals;
the regulating valve controls the spray header of the product partition to finish spray cooling and temperature control of each product partition of the product to be cooled;
the spray header is used for cooling the spray water of each product partition required to be cooled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211383196.8A CN116179839B (en) | 2022-11-07 | 2022-11-07 | Cooling rate control method, device and system for heat treatment |
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| CN107338354A (en) * | 2017-05-26 | 2017-11-10 | 太原重工股份有限公司 | The control method of air-flow velocity |
| CN110184447B (en) * | 2018-02-23 | 2020-12-22 | 宝山钢铁股份有限公司 | Intelligent fine cooling control method for normalized pickling line |
| CN113106217A (en) * | 2021-03-25 | 2021-07-13 | 广州市型腔模具制造有限公司 | Cold machining process for nozzle point |
| CN113234903A (en) * | 2021-05-24 | 2021-08-10 | 湖北三环车桥有限公司 | Zone control heat treatment spraying system for front axle |
| CN113444860B (en) * | 2021-06-28 | 2022-07-01 | 二重（德阳）重型装备有限公司 | Quenching method for workpieces with large thickness difference |
| CN113695405B (en) * | 2021-09-07 | 2022-07-29 | 燕山大学 | Uniform cooling system and method for differential temperature rolling of large-scale shell ring |
| CN114635017B (en) * | 2022-05-19 | 2022-09-06 | 北京煜鼎增材制造研究院有限公司 | Spray type heat treatment device and heat treatment method for large metal component |
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