CN116099919A - Hot-press forming process for metal product - Google Patents
Hot-press forming process for metal product Download PDFInfo
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- CN116099919A CN116099919A CN202310130657.9A CN202310130657A CN116099919A CN 116099919 A CN116099919 A CN 116099919A CN 202310130657 A CN202310130657 A CN 202310130657A CN 116099919 A CN116099919 A CN 116099919A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 76
- 239000002184 metal Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 139
- 238000011084 recovery Methods 0.000 claims abstract description 54
- 239000002994 raw material Substances 0.000 claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000007731 hot pressing Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 239000012809 cooling fluid Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 46
- 210000001061 forehead Anatomy 0.000 claims description 24
- 238000005507 spraying Methods 0.000 claims description 22
- 239000002826 coolant Substances 0.000 claims description 12
- 238000004064 recycling Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000000137 annealing Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
Abstract
The invention provides a metal product hot-press forming process applied to the field of hot-press treatment processes, wherein the metal product hot-press forming process is prepared by processing metal raw materials; then preheating the metal raw material to T2 ℃; after the metal raw material is preserved for a certain time, placing the preheated metal raw material into spray equipment, and carrying out sectional spray treatment on the metal raw material by using cooling fluid to cool the metal raw material, wherein the spray equipment outputs heat recovery fluid, and the heat recovery fluid is recovered in sections and stored in a fluid tank; preheating a die, loading the metal raw material to be processed into the die, and carrying out hot pressing treatment according to a certain pressure; cooling the metal product after the hot pressing treatment to cool the mold, and finally taking out the metal product in the mold; the scheme realizes the preheating treatment of the die by utilizing the recovered waste heat, so that the temperature difference between the die and a workpiece is not easy to be large in the hot pressing process, and larger temperature stress is not easy to be generated in the die.
Description
Technical Field
The application relates to the field of hot press treatment processes, in particular to a hot press forming process of a metal product.
Background
The annealing process is commonly used for preheating a metal workpiece in a metal hot-pressing process to ensure the structural stability of the metal process in the hot-pressing process, and the annealing refers to slowly heating the metal to a certain temperature, maintaining the metal for a sufficient time, and then cooling the metal at a proper speed. The aim is to reduce the hardness and improve the machinability; residual stress is reduced, the size is stabilized, and the deformation and crack tendency are reduced; refining grains, adjusting the structure, and eliminating the structure defect;
the heat loss in the annealing and hot pressing process is larger, the heat utilization rate is not high, and the energy waste is larger;
meanwhile, in the metal hot-pressing process, if the temperature difference between the surface of the die, which is in contact with the workpiece, and the non-contact surface is large, temperature stress is caused in the die, and the service life of the die is easy to reduce, so that the die needs to be preheated, and most of the die preheating of the die is directly heated by using heating equipment, and no utilization method of the waste heat recovered in the hot-pressing process is available for preheating the die at present.
Disclosure of Invention
The application aims to provide a hot press molding process for metal products, which is characterized by comprising the following specific process steps of:
s1, preparing a metal raw material;
s2, preheating the metal raw material to T2 ℃, wherein the preheating mode comprises sectional heating; the first stage is to heat the metal raw material to T1 ℃; the second stage heats the metal raw material to T2 ℃;
s3, after the metal raw material is kept warm for a certain time, placing the preheated metal raw material into spray equipment, and carrying out sectional spray treatment on the metal raw material by using cooling fluid to cool the metal raw material to T1 ℃, outputting heat recovery fluid by the spray equipment, and carrying out sectional recovery on the heat recovery fluid and storing the heat recovery fluid in a fluid tank;
s4, preheating the die to T4 ℃;
s5, loading the metal raw material to be processed into a die, and carrying out hot pressing treatment according to a certain pressure;
s6, cooling the metal product subjected to the hot pressing treatment to cool the die to T3 ℃, and taking out the metal product in the die;
s7, repeating the steps S4-S6 until the metal workpiece to be processed is processed.
The scheme realizes the preheating treatment of the die by utilizing the recovered waste heat, so that the temperature difference between the die and a workpiece is not easy to be large in the hot pressing process, and larger temperature stress is not easy to be generated in the die.
Optionally, the heat treatment device comprises a pair of segmented heating pipes, and heat exchange pipes are connected between the segmented heating pipes and are wound pipe type heat exchangers.
Optionally, the hot press treatment device comprises a pressurizing device and a die, wherein the die comprises a lower die and an upper die, and a heat exchange row and a heating device are arranged in the lower die.
Optionally, the cooling treatment mode of the step S6 includes a segmentation method with adjustable cooling rate.
Alternatively, the cooling fluid comprises a liquid coolant or a gaseous coolant, the liquid coolant comprising water, heavy water, hydrocarbons, liquid metal and low melting point molten salt, the gaseous coolant comprising an inert gas and carbon dioxide.
Optionally, the step S3 of the segmented spraying process includes the following steps:
a1, spraying cooling fluid for a period of time to cool a workpiece to a certain temperature;
a2, recovering the spray fluid and storing the spray fluid in a fluid tank;
a3, repeating the work of A1-A2 for a plurality of times until the temperature of the workpiece is reduced to T1 ℃.
Optionally, the heat recovery control system is further comprised, the control system comprises a controller matched with the hot pressing treatment equipment, the heating equipment, the spraying equipment and the mold cooling system are all connected with the controller, the controller is connected with a recovery fluid allocation module, temperature sensors matched with the recovery fluid allocation module are all installed in the heating equipment, the spraying equipment, the mold and the fluid tank, the recovery fluid allocation module is connected with a fluid constant temperature regulator and a fluid pump, and the fluid tank, the winding pipe type heat exchanger and the mold are all connected with the fluid constant temperature regulator.
Optionally, the fluid tank storesAfter the recovered spray fluid is stabilized, measuring the temperature, combining and counting the fluid in the fluid tank with the stable temperature being more than T5 ℃ to obtain Q Recovery of ，Q Recovery of The determination formula of (2) is as follows;
Q recovery of ＝Q 1 +Q 2 +Q 3 …Q n ；
Q n To stabilize the fluid volume in the fluid tank at a temperature greater than T5 ℃; q (Q) 1 -Q n And outputting the mixed fluid to a fluid thermostatic regulator, cooling to T5 ℃ through the fluid thermostatic regulator, and preserving heat to obtain the heat recovery fluid for the primary metal workpiece spraying treatment.
Optionally, the recovery fluid allocation module can regulate and control the preheating thermal fluid quantity to be Q Total output of ，Q Total output of The determination formula of (2) is as follows;
Q total output of ＝X*Q Recovery of ；
X is the total number of preheated workpieces retained between the hot press device and the spraying equipment.
Optionally, the required T5 ℃ temperature fluid quantity of the die in the designated time is Q Forehead (forehead) If Q Total output of ≥Q Forehead (forehead) And the recycling fluid allocation module directly inputs heat recycling fluid to the die through the constant temperature regulator to preheat the die, otherwise, the recycling fluid allocation module performs sectional heating treatment on the die or performs compensation heating treatment on the recycled preheating fluid.
Compared with the prior art, the advantage of this application lies in:
(1) The scheme realizes the preheating treatment of the die by utilizing the recovered waste heat, so that the temperature difference between the die and a workpiece is not easy to be large in the hot pressing process, and the die is not easy to generate large temperature stress, thereby being easy to prolong the service life of the die.
(2) When the heat recovery fluid amount for preheating the die is insufficient, the die can be subjected to sectional heating treatment or compensation heating treatment on the recovered preheating fluid, so that the heat utilization rate of the recovered heat fluid and the requirement of preheating the die are met.
(3) The scheme includes a heat recovery control system, the control system includes with hot pressing treatment facility assorted controller, heating equipment, spray equipment and mould cooling system all are connected with the controller, be connected with on the controller and retrieve fluid allotment module, heating equipment, spray equipment, mould and fluid tank in all install with retrieve fluid allotment module assorted temperature sensor, be connected with fluid thermostatic regulator and fluid pump on retrieving fluid allotment module, fluid tank, winding tubular heat exchanger and mould all are connected with fluid thermostatic regulator, regulate and control through retrieving fluid allotment module, retrieve and export heat recovery fluid, easily satisfy the preheating requirement of mould.
Drawings
FIG. 1 is a process flow diagram of the present application;
FIG. 2 is a topology of the present application;
FIG. 3 is a perspective view of a thermal processing apparatus of the present application;
FIG. 4 is a system block diagram of the present application;
FIG. 5 is a logic flow diagram of the present application;
FIG. 6 is a logic flow diagram of the present application with pre-heat fluid replenishment;
FIG. 7 is a topology of the present application with pre-heat fluid replenishment;
FIG. 8 is a logic flow diagram of the present application with mold segment heating;
fig. 9 is a topology diagram of the present application when die segment heating is performed.
The reference numerals in the figures illustrate:
1 a sectional heating pipe and 2 a heat exchange pipe.
Detailed Description
The embodiments will be described in detail and throughout the specification with reference to the drawings, wherein, based on the embodiments in the application, all other embodiments obtained by persons skilled in the art without making creative efforts are within the scope of protection of the application.
Example 1:
referring to fig. 1-6, the invention provides a hot press molding process for metal products, which comprises the following specific process steps:
s1, preparing a metal raw material, wherein the preparing comprises the steps of processing a cutter, a grinding machine and a lathe;
s2, preheating a metal raw material to T2 ℃ (T2 = 600 ℃ in the embodiment);
the preheating mode comprises sectional heating; in the first stage, the metal raw material is heated to T1 ℃ (T1 ℃ is the temperature of the workpiece subjected to hot press treatment, and t1=350 ℃ in the embodiment); the second stage heats the metal raw material to T2 ℃ (T2 ℃ is the temperature of the highest heat treatment);
s3, after the metal raw material is kept warm for a certain time, placing the preheated metal raw material into spraying equipment, and carrying out sectional spraying treatment on the metal raw material by using cooling fluid (the cooling fluid comprises liquid coolant or gas coolant, the liquid coolant comprises water, heavy water, hydrocarbon, liquid metal (sodium and potassium) and low-melting molten salt, the gas coolant comprises inert gas and carbon dioxide), so that the metal raw material is cooled to T1 ℃, the spraying equipment outputs heat recovery fluid, and the heat recovery fluid is recovered in sections and stored in a fluid tank;
the sectional spraying flow comprises the following steps:
a1, spraying cooling fluid for a period of time to cool a workpiece to a certain temperature;
a2, recovering the spray fluid and storing the spray fluid in a fluid tank;
a3, repeating the operation of A1-A2 for a plurality of times (n sections of heat recovery fluid can be obtained by repeating the operation of A1-A2 for n times) until the temperature of the workpiece is reduced to T1 ℃.
S4, preheating the die to T4 ℃; (T4 ℃ is the preheating temperature of the die, t4=300 ℃ in the embodiment, the numerical value of T4 is set by the skilled person according to the highest temperature of the fluid recovered by the spraying equipment, and the temperature difference between T1 ℃ and T4 ℃ is less than 100);
s5, loading the metal raw material to be processed into a die, and carrying out hot pressing treatment according to a certain pressure;
s6, cooling the metal product subjected to the hot pressing treatment, wherein the cooling treatment mode comprises a segmentation method with an adjustable cooling rate, so that the temperature of a die is reduced to T3 ℃ (T3 ℃ is the temperature of the die when a workpiece is demolded, and in the embodiment, T3 = 150 ℃), and taking out the metal product in the die;
s7, repeating the steps S4-S6 until the metal workpiece to be processed is processed.
The heat treatment device in the scheme comprises a pair of segmented heating pipes, wherein heat exchange pipes are connected between the segmented heating pipes and are wound pipe type heat exchangers.
The hot pressing treatment equipment comprises a pressurizing device and a die, wherein the die comprises a lower die and an upper die, a heat exchange row and a heating device are arranged in the lower die, heat recovery fluid output by the recovery fluid allocation module is input into the heat exchange row, and the die is subjected to preheating treatment through the heat exchange row.
The scheme also comprises a heat recovery control system, wherein the control system comprises a controller matched with the hot pressing treatment equipment, the heating equipment, the spraying equipment and the mold cooling system are all connected with the controller, the controller is connected with a recovery fluid allocation module, and temperature sensors matched with the recovery fluid allocation module are arranged in the heating equipment, the spraying equipment, the mold and the fluid tank;
the winding tube type heat exchanger, the spraying equipment, the heat exchange disc and the fluid tank are all provided with electromagnetic flow regulating valves matched with a recovered fluid allocation module, the recovered fluid allocation module is connected with a fluid constant temperature regulator and a fluid pump, the fluid tank, the winding tube type heat exchanger and the die are all connected with the fluid constant temperature regulator, and the fluid constant temperature regulator is used for regulating input fluid to a specified temperature.
Measuring the temperature of the recovered spray fluid stored in the fluid tank after the recovered spray fluid is stabilized, and combining and counting the fluid in the fluid tank with the stable temperature being more than T5 ℃ to obtain Q Recovery of ，Q Recovery of The determination formula of (2) is as follows;
Q recovery of ＝Q 1 +Q 2 +Q 3 …Q n ；
Q n To stabilize the fluid quantity in a fluid tank with the temperature higher than T5 ℃ (T5 ℃ is the fluid temperature required for preheating a die to T4 ℃ in a specified time), carrying out n-stage spray treatment to obtain n-stage heat recovery fluid; q (Q) 1 -Q n After confluence, outputting to a fluid thermostatic regulator, cooling to T5 ℃ through the fluid thermostatic regulator, and preserving heat to obtain a primary metal workpieceThe treated heat recovery fluid is sprayed.
The adjustable preheating thermal fluid quantity of the reclaimed fluid allocation module is Q Total output of ，Q Total output of The determination formula of (2) is as follows;
Q total output of ＝X*Q Recovery of ；
X is the total number of preheated workpieces retained between the hot press device and the spraying equipment.
The fluid quantity of the temperature of T5 ℃ required by the die to finish preheating to T4 ℃ within the appointed time T (T is the workpiece hot pressing interval) is Q Forehead (forehead) (those skilled in the art can calculate Q based on the specification parameters of the mold and heat exchanger bars, the heat treatment time and the heat loss of the fluid transfer Forehead (forehead) And T5 ℃ and) when Q Total output of ≥Q Forehead (forehead) And when the recycling fluid blending module is used, the recycling fluid blending module directly inputs the heat recycling fluid to the die through the constant temperature regulator to preheat the die.
Example 2:
referring to fig. 6 to 7, wherein the same or corresponding parts as in embodiment 1 are designated by the same reference numerals as in embodiment 1, only the differences from embodiment 1 are described below for the sake of brevity. This embodiment 2 is different from embodiment 1 in that:
when Q is Total output of ＜Q Forehead (forehead) In this case, the recovery fluid deployment module determines the amount of supplemental warming fluid required, as determined by: q (Q) Forehead (forehead) -Q Total output of ＝Q Tonifying device ；
The recovered fluid allocation module carries out compensation heating treatment on the recovered preheated fluid to obtain Q Tonifying device When the heat treatment equipment heats the metal workpiece in a sectioning way, the metal workpiece is heated to a certain temperature through a sectioning heating pipe, then the workpiece is moved into the winding pipe type heat exchanger to heat the preheating fluid to T1, and then the metal workpiece passes through the winding pipe type heat exchanger to move to the next sectioning heating pipe to heat the workpiece to T2 ℃;
at the moment, the retention time of the heated metal workpiece moving in the winding tube type heat exchanger can be prolonged, and when the retention time is prolonged, the conveying speed of the conveying equipment for moving the metal workpiece is correspondingly adjusted, so that the time difference of the processing treatment of two adjacent metal workpieces to be processed is ensured to be stable.
During the moving process of the metal workpiece heated in the first stage in the winding tube type heat exchanger, introducing heat recovery fluid (the heat recovery fluid is the fluid with the temperature lower than the required temperature in the fluid tank) into the winding tube type heat exchanger, so that the heat recovery fluid is heated to the required temperature, and finishing the compensation heating treatment;
will Q Tonifying device Input thermostat and Q Total output of And outputting the hot fluid with the required temperature to preheat the die after confluence.
Example 3: in which the same or corresponding parts as those in embodiment 1 are denoted by the corresponding reference numerals as those in embodiment 1, only the points of distinction from embodiment 1 will be described below for the sake of brevity. This embodiment 3 is different from embodiment 1 in that:
referring to FIGS. 7-8, when Q Total output of ＜Q Forehead (forehead) When the method is used, the fluid recovery allocation module carries out sectional heating treatment on the die, and the fluid recovery allocation module carries out Q Total output of ：Q Forehead (forehead) The preheating time of the fluid used by the die is adjusted in equal proportion to obtain t Adjustment of Wherein Q is Total output of /Q Forehead (forehead) ＝t Adjustment of T; the temperature rise time of the die is regulated in equal proportion; ensuring that the heat of the heat recovery fluid is fully utilized within the appointed preheating time;
using Q Total output of At t for the die Adjustment of Preheating in a time period, and raising the temperature of the die by T X The recycling fluid allocation module adjusts the heating power of the heating equipment;
making the heating device subtracting t from t Adjustment of The auxiliary die temperature is controlled from T in the rest time period X And (4) rising to T4, so that the sectional heating treatment of the die is completed.
The foregoing is merely a preferred embodiment of the present application, which is used in connection with the actual requirement, but the scope of the present application is not limited thereto.
Claims (10)
1. A metal product hot press molding process is characterized by comprising the following specific process steps:
s1, preparing a metal raw material;
s2, preheating the metal raw material to T2 ℃, wherein the preheating mode comprises sectional heating; the first stage is to heat the metal raw material to T1 ℃; the second stage heats the metal raw material to T2 ℃;
s3, after the metal raw material is kept warm for a certain time, placing the preheated metal raw material into spray equipment, and carrying out sectional spray treatment on the metal raw material by using cooling fluid to cool the metal raw material to T1 ℃, outputting heat recovery fluid by the spray equipment, and carrying out sectional recovery on the heat recovery fluid and storing the heat recovery fluid in a fluid tank;
s4, preheating the die to T4 ℃;
s5, loading the metal raw material to be processed into a die, and carrying out hot pressing treatment according to a certain pressure;
s6, cooling the metal product subjected to the hot pressing treatment to cool the die to T3 ℃, and taking out the metal product in the die;
s7, repeating the steps S4-S6 until the metal workpiece to be processed is processed.
2. The hot press forming process of a metal product according to claim 1, wherein the heat treatment device comprises a pair of segmented heating pipes, and a heat exchange pipe is connected between the segmented heating pipes, and the heat exchange pipe is a wound pipe type heat exchanger.
3. The hot press forming process of a metal product according to claim 1, wherein the hot press processing apparatus comprises a pressurizing device and a mold, the mold comprises a lower mold and an upper mold, and the heat exchanging row and the heating apparatus are installed in the lower mold.
4. The hot press molding process of claim 1, wherein the cooling treatment in step S6 includes a sectioning method with an adjustable cooling rate.
5. A metal product hot press forming process according to claim 1, wherein the cooling fluid comprises a liquid coolant or a gas coolant, the liquid coolant comprising water, heavy water, hydrocarbons, liquid metal and low melting molten salt, the gas coolant comprising inert gas and carbon dioxide.
6. The hot press forming process of a metal product according to claim 1, wherein the step S3 of the stage spraying process comprises the steps of:
a1, firstly, spraying cooling fluid for a period of time to cool the workpiece to a certain temperature,
a2, recovering the spray fluid and storing the spray fluid in a fluid tank;
a3, repeating the work of A1-A2 for a plurality of times until the temperature of the workpiece is reduced to T2 ℃.
7. The hot press forming process of metal products according to claim 6, further comprising a heat recovery control system, wherein the control system comprises a controller matched with the hot press treatment equipment, the heating equipment, the spraying equipment and the mold cooling system are all connected with the controller, the controller is connected with a recovery fluid allocation module, temperature sensors matched with the recovery fluid allocation module are arranged in the heating equipment, the spraying equipment, the mold and the fluid tank, the recovery fluid allocation module is connected with a fluid constant temperature regulator and a fluid pump, and the fluid tank, the winding pipe type heat exchanger and the mold are all connected with the fluid constant temperature regulator.
8. The process of claim 7, wherein the temperature is measured after the recovered spray fluid stored in the fluid tank is stabilized, and the fluid in the fluid tank with the stabilized temperature being greater than T5 ℃ is combined and counted to obtain Q Recovery of ，Q Recovery of The determination formula of (2) is as follows;
Q recovery of ＝Q 1 +Q 2 +Q 3 …Q n ；
Q n To stabilize fluids having a temperature greater than T5 DEG CAmount of fluid in the tank; q (Q) 1 -Q n And outputting the mixed fluid to a fluid thermostatic regulator, cooling to T5 ℃ through the fluid thermostatic regulator, and preserving heat to obtain the heat recovery fluid for the primary metal workpiece spraying treatment.
9. The hot press molding process of a metal product according to claim 7, wherein: the adjustable preheating thermal fluid quantity of the recovery fluid allocation module is Q Total output of ，Q Total output of The determination formula of (2) is as follows;
Q total output of ＝X*Q Recovery of ；
X is the total number of preheated workpieces retained between the hot press device and the spraying equipment.
10. The process of claim 9, wherein the die requires a fluid quantity Q at a temperature of T5 ℃ for a predetermined period of time Forehead (forehead) If Q Total output of ≥Q Forehead (forehead) And the recycling fluid allocation module directly inputs heat recycling fluid to the die through the constant temperature regulator to preheat the die, otherwise, the recycling fluid allocation module performs sectional heating treatment on the die or performs compensation heating treatment on the recycled preheating fluid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310130657.9A CN116099919B (en) | 2023-02-17 | 2023-02-17 | Hot-press forming process for metal product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310130657.9A CN116099919B (en) | 2023-02-17 | 2023-02-17 | Hot-press forming process for metal product |
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| CN116099919A true CN116099919A (en) | 2023-05-12 |
| CN116099919B CN116099919B (en) | 2023-12-22 |
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| CN217891762U (en) * | 2022-07-08 | 2022-11-25 | 安徽金誉科技有限责任公司 | Injection mold annealing device |
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