CN113634699A - Metal component high-temperature forging control method and control system thereof - Google Patents
Metal component high-temperature forging control method and control system thereof Download PDFInfo
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- CN113634699A CN113634699A CN202110940360.XA CN202110940360A CN113634699A CN 113634699 A CN113634699 A CN 113634699A CN 202110940360 A CN202110940360 A CN 202110940360A CN 113634699 A CN113634699 A CN 113634699A
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- forging
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- pressure
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- 238000005242 forging Methods 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 238000003754 machining Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/20—Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
Abstract
The invention discloses a high-temperature forging control system for a metal component, which comprises a temperature control module for controlling the temperature of a workpiece in the forging process and a forging control module for controlling the machining size of the workpiece in the forging process; the temperature control module comprises a temperature monitor for detecting the temperature of the end part of the workpiece and a temperature transmitter for performing supplementary control on the surface temperature of the workpiece in the forging process of the workpiece; the forging and pressing control module comprises a main cylinder pressure tester for monitoring the internal pressure of the main cylinder in the forging and pressing process and an infrared monitor for detecting the radial and axial dimensions of the workpiece; the invention also discloses a high-temperature forging control method of the metal component, which comprises the following steps: determining an S1 scheme; s2, judging whether the forging is in a set state; s3, judging whether forging is finished or not; the whole process of the invention adopts double negative feedback, and the precision and the efficiency are high.
Description
Technical Field
The invention relates to the field of forging, in particular to a high-temperature forging control method and a high-temperature forging control system for a metal component.
Background
Forging is a process of using forging machinery to apply pressure to a metal blank to make it plastically deform to obtain a forging with certain mechanical properties, certain shape and size. The defects of as-cast porosity and the like generated in the smelting process of metal can be eliminated through forging, the microstructure is optimized, and meanwhile, because the complete metal streamline is preserved, the mechanical property of the forging is generally superior to that of a casting made of the same material. Important parts with high load and severe working conditions in related machines are mainly forged pieces except for plates, sections or welding pieces which are simple in shape and can be rolled.
The forging thermal specification refers to selected thermodynamic parameters for forging, including forging temperature, degree of deformation, strain rate, stress state (forging method), heating plus cooling rate, and the like. These parameters directly influence the forgeability of metal materials and the structure and performance of forgings, and the reasonable selection of the thermodynamic parameters is an important link for the formulation of forging technology. How to grasp these parameters in the process is also the key point of automatic control of forging.
Disclosure of Invention
The invention aims to solve the defect that the forging automation cannot be well controlled in the prior art, and provides a high-temperature forging control method and a high-temperature forging control system for a metal component.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-temperature forging control system for a metal component comprises a temperature control module for controlling the temperature of a workpiece in the forging process and a forging control module for controlling the machining size of the workpiece in the forging process; the temperature control module comprises a temperature monitor for detecting the temperature of the end part of the workpiece and a temperature transmitter for performing supplementary control on the surface temperature of the workpiece in the forging process of the workpiece; the forging and pressing control module comprises a main cylinder pressure tester for monitoring the internal pressure of the main cylinder in the forging and pressing process and an infrared monitor for detecting the radial and axial dimensions of the workpiece.
Preferably, the infrared monitor measures the temperature difference of the forging space in a non-contact measuring mode, delineates the workpiece according to the temperature difference, and calculates the machining size according to the delineated workpiece.
Preferably, the temperature control system is applied to forging and pressing of the shaft parts, and the detected parts are the temperature of the regions at the end parts of the two sides of the shaft parts.
A high-temperature forging control method for a metal component comprises the following steps: determining an S1 scheme; determining a forging scheme of a workpiece to be machined according to the workpiece to be machined, determining time required by forging, dividing time nodes according to the working procedure difference and the state difference of machining, and determining forging parameters which are input pressure of forging, initial forging temperature and final forging temperature of forging according to the time nodes; s2, judging whether the forging is in a set state; the output pressure of the main cylinder and the surface temperature of the workpiece are subjected to feedback control in time in the forging process; s3, judging whether forging is finished or not; the machining size of the forge piece in the forging process is detected, and forging and pressing are stopped when the requirement for detecting the size is met.
Preferably, the step of determining whether the forging is in the set state at S2 includes two steps of pressure determination and temperature determination; s21 first records the pressure value of the master cylinder as F1Then inputting the set pressure value F of the master cylinder under the corresponding time node, and judging F1If the error between the first value and the second value F is not in accordance with the standard, adjusting the pressure output of the main cylinder if the error between the first value F and the second value F is not in accordance with the standard, judging again, and continuing to operate downwards if the error between the first value F and the second value F is in accordance with the standard; s22 measuring the temperatures of both ends and the middle part of the workpiece, calculating the average value T, and inputting the temperature range T set by the workpiece corresponding to the time2-T3Judging whether there is T2≤T1≤T3If not, activating a temperature transmitter to adjust the temperature required by the forging, and adopting one operation of heating up and cooling down; if yes, continue the downward operation.
Preferably, in the step of S21, it is determined whether | F-F is present or not1|/100＜0.03。
Preferably, in the step of determining whether forging is completed or not at S3, the axial dimension and the radial dimension of the workpiece are first detected by an infrared monitor to obtain L1And R1Whether the determination is finished or not is based on whether there is | R-R 1100 < 0.01 and L-L1|/100＜0.015。
The invention has the beneficial effects that: in the invention, (1) monitoring and managing the forging process, and respectively carrying out forging control from the input pressure of the cylinder body and the temperature of the middle part of the end part of the workpiece, so that the problems of workpiece deformation and workpiece cracks caused by over-low and over-high temperature can be better avoided; (2) a process plan is set according to the time node, so that the difference in the forging and pressing control process of the workpiece can be effectively carried out; (3) the infrared monitoring can be adopted to effectively realize the measurement of the size of the workpiece under the condition of not contacting the workpiece; the whole process adopts double negative feedback, and the precision and the efficiency are high.
Drawings
FIG. 1 is a schematic diagram of a control system according to the present invention;
fig. 2 is a flowchart of the control method of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 and 2, a high-temperature forging control system for a metal component comprises a temperature control module for controlling the temperature of a workpiece in a forging process and a forging control module for controlling the machining size of the workpiece in the forging process; the temperature control module comprises a temperature monitor for detecting the temperature of the end part of the workpiece and a temperature transmitter for performing supplementary control on the surface temperature of the workpiece in the forging process of the workpiece; the forging and pressing control module comprises a main cylinder pressure tester for monitoring the internal pressure of the main cylinder in the forging and pressing process and an infrared monitor for detecting the radial and axial dimensions of the workpiece.
In this embodiment, the infrared monitor measures the temperature difference of the forging space by a non-contact measurement method, delineates the workpiece according to the temperature difference, and calculates the machining size according to the delineated workpiece.
In this embodiment, the temperature control system is applied to the forging and pressing of the shaft-like part, and the detected positions are the temperatures of the regions at the two side ends of the shaft-like part.
A high-temperature forging control method for a metal component comprises the following steps: determining an S1 scheme; determining a forging scheme of a workpiece to be machined according to the workpiece to be machined, determining time required by forging, dividing time nodes according to the working procedure difference and the state difference of machining, and determining forging parameters which are input pressure of forging, initial forging temperature and final forging temperature of forging according to the time nodes; s2, judging whether the forging is in a set state; the output pressure of the main cylinder and the surface temperature of the workpiece are subjected to feedback control in time in the forging process; s3, judging whether forging is finished or not; the machining size of the forge piece in the forging process is detected, and forging and pressing are stopped when the requirement for detecting the size is met.
In the present embodiment, the step of determining whether the forging is in the set state at S2 includes two steps of pressure determination and temperature determination; s21 first records the pressure value of the master cylinder as F1Then inputting the set pressure value F of the master cylinder under the corresponding time node, and judging F1If the error between the first value and the second value F is not in accordance with the standard, adjusting the pressure output of the main cylinder if the error between the first value F and the second value F is not in accordance with the standard, judging again, and continuing to operate downwards if the error between the first value F and the second value F is in accordance with the standard; s22 measuring the temperatures of both ends and the middle part of the workpiece, calculating the average value T, and inputting the temperature range T set by the workpiece corresponding to the time2-T3Judging whether there is T2≤T1≤T3If not, activating a temperature transmitter to adjust the temperature required by the forging, and adopting one operation of heating up and cooling down; if yes, continue the downward operation.
In the present embodiment, in step S21, it is determined whether there is | F-F |1|/100＜0.03。
In the present embodiment, in the step of determining whether or not forging is completed at S3, the axial dimension and the radial dimension of the workpiece are first detected by an infrared monitor to obtain L1And R1Whether the determination is finished or not is based on whether there is | R-R 1100 < 0.01 and L-L1|/100＜0.015。
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A high-temperature forging control system for a metal component is characterized by comprising a temperature control module for controlling the temperature of a workpiece in the forging process and a forging control module for controlling the machining size of the workpiece in the forging process; the temperature control module comprises a temperature monitor for detecting the temperature of the end part of the workpiece and a temperature transmitter for performing supplementary control on the surface temperature of the workpiece in the forging process of the workpiece; the forging and pressing control module comprises a main cylinder pressure tester for monitoring the internal pressure of the main cylinder in the forging and pressing process and an infrared monitor for detecting the radial and axial dimensions of the workpiece.
2. The system as claimed in claim 1, wherein the infrared monitor measures a temperature difference of the forging space by a non-contact measurement method, delineates the workpiece according to the temperature difference, and calculates a machining dimension according to the delineated workpiece.
3. The system for controlling high-temperature forging of metal components as claimed in claim 1, wherein the temperature control system is applied to forging and pressing of shaft parts, and the detected positions are the temperatures of regions at both side ends of the shaft parts.
4. A high-temperature forging control method for a metal component is characterized by comprising the following steps:
determining an S1 scheme; determining a forging scheme of a workpiece to be machined according to the workpiece to be machined, determining time required by forging, dividing time nodes according to the working procedure difference and the state difference of machining, and determining forging parameters which are input pressure of forging, initial forging temperature and final forging temperature of forging according to the time nodes;
s2, judging whether the forging is in a set state; the output pressure of the main cylinder and the surface temperature of the workpiece are subjected to feedback control in time in the forging process;
s3, judging whether forging is finished or not; the machining size of the forge piece in the forging process is detected, and forging and pressing are stopped when the requirement for detecting the size is met.
5. The method of claim 4, wherein the step of determining whether the forging is in the set state at S2 includes two steps of pressure determination and temperature determination;
s21 first records the pressure value of the master cylinder as F1Then inputting the set pressure value F of the master cylinder under the corresponding time node, and judging F1If the error between the first value and the second value F is not in accordance with the standard, adjusting the pressure output of the main cylinder if the error between the first value F and the second value F is not in accordance with the standard, judging again, and continuing to operate downwards if the error between the first value F and the second value F is in accordance with the standard;
s22 measuring the temperatures of both ends and the middle part of the workpiece, calculating the average value T, and inputting the temperature range T set by the workpiece corresponding to the time2-T3Judging whether there is T2≤T1≤T3If not, activating a temperature transmitter to adjust the temperature required by the forging, and adopting one operation of heating up and cooling down; if yes, continue the downward operation.
6. The method of claim 4A method for controlling high-temperature forging of a metal member, characterized in that in step S21, it is judged whether or not | F-F is present1|/100＜0.03。
7. The method for controlling high-temperature forging of a metal member as recited in claim 4, wherein in the step of judging whether forging is completed or not at S3, the axial dimension and the radial dimension of the workpiece are first detected by an infrared monitor to obtain L respectively1And R1Whether the determination is finished or not is based on whether there is | R-R1100 < 0.01 and L-L1|/100＜0.015。
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- 2021-08-17 CN CN202110940360.XA patent/CN113634699A/en active Pending
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| CN1544180A (en) * | 2003-11-25 | 2004-11-10 | 南通工学院 | Intelligent control method for die hammer and intelligent die hammer produced according to said method |
| CN101819424A (en) * | 2010-01-25 | 2010-09-01 | 南京埃斯顿数字技术有限公司 | Method and controller for controlling position, pressure measurement and safe control of sliding block of forging machine tool |
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