CN215162953U - Variable-rate heating device and cryogenic treatment equipment - Google Patents
Variable-rate heating device and cryogenic treatment equipment Download PDFInfo
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- CN215162953U CN215162953U CN202120602375.0U CN202120602375U CN215162953U CN 215162953 U CN215162953 U CN 215162953U CN 202120602375 U CN202120602375 U CN 202120602375U CN 215162953 U CN215162953 U CN 215162953U
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Abstract
The present disclosure relates to a variable rate heating apparatus and a cryogenic treatment apparatus. The variable-rate temperature increasing device includes: the temperature-rising workpiece table is used for placing a workpiece; the temperature raising mechanism comprises one or more temperature raising spray heads and is used for spraying a temperature raising medium towards the workpiece positioned on the temperature raising workpiece table so as to heat the workpiece; and the water tank is arranged below the heating spray head of the heating mechanism and used for receiving and storing the heating medium sprayed by the heating spray head. According to the variable-rate heating device and the cryogenic treatment equipment, the workpiece is sprayed with the heating medium through the heating nozzle at the heating mechanism for heating treatment, so that the heating rate of the workpiece can be increased, and the variable-rate heating effect is realized. And moreover, the heating medium is further pressurized and heated, and particularly the gaseous heating medium has the characteristic of high temperature, and the workpiece is heated in a spraying mode, so that the heating rate of the workpiece can be effectively increased, and the workpiece can be heated to a higher temperature.
Description
Technical Field
The disclosure belongs to the field of heat treatment, and particularly relates to a variable-rate heating device and cryogenic treatment equipment.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The metal heat treatment is one of important processes in mechanical manufacturing, and under the condition of not changing the shape and the whole chemical composition of a workpiece, the temperature and the temperature change rate are controlled to change the microstructure or the surface chemical composition in the workpiece, so that the performance of a metal component is changed, or the problems of large residual stress, deformation, poor dimensional stability and the like in the component caused by uneven plastic deformation caused by phase change and temperature unevenness are solved.
With the development of the technology, the technical requirements of metal components such as service performance, service life, dimensional stability and the like are higher and higher, the traditional heat treatment process is difficult to meet, and the deep cooling treatment is taken as a new process measure, and after the deep cooling treatment, the temperature rise treatment is generally required to be carried out on the workpiece.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a variable rate temperature increasing device, a cryogenic treatment apparatus, and a method for performing temperature increasing treatment on a workpiece.
The utility model provides a variable rate rising temperature device for carry out intensification processing to the work piece, include:
the temperature-rising workpiece table is used for placing a workpiece;
the temperature raising mechanism comprises one or more temperature raising spray heads and is used for spraying a temperature raising medium towards the workpiece positioned on the temperature raising workpiece table so as to heat the workpiece;
and the water tank is arranged below the heating spray head of the heating mechanism and used for receiving and storing the heating medium sprayed by the heating spray head.
Preferably, the heating workpiece table comprises a heating track for bearing a storage vehicle, the storage vehicle bears the workpiece, and the workpiece is moved to the heating track to be subjected to heating treatment.
Preferably, the heating mechanism further comprises a pair of heating nozzle installation modules arranged oppositely, the heating track is located between the heating nozzle installation modules, and the heating nozzle is movably connected to the heating nozzle installation modules and faces the heating workpiece table to adjust the extending length of the heating nozzle.
Preferably, the temperature-increasing spray heads are connected to different connecting pipes to spray corresponding temperature-increasing media toward the workpiece, and the temperature-increasing spray heads are rotatably connected to the temperature-increasing nozzle mounting module to adjust a spray angle of the temperature-increasing spray heads.
Preferably, the heating mechanism further comprises a heating shell, the heating shell is provided with a containing cavity, the heating workpiece platform and the heating sprayer are arranged in the containing cavity, the heating shell is arranged above the water tank, and the containing cavity is communicated with the water tank to receive a heating medium sprayed by the heating sprayer.
Preferably, the heating mechanism further comprises one or more exhaust fans, the heating shell is provided with exhaust holes corresponding to the exhaust fans, and the exhaust fans are connected to the heating shell, so that the exhaust fans can exhaust gas in the accommodating cavities of the heating shell through the exhaust holes.
Preferably, the temperature raising mechanism further comprises a temperature sensor arranged in the cavity of the temperature raising housing and used for detecting the temperature of the cavity of the temperature raising housing.
The present disclosure also provides a cryogenic treatment apparatus, comprising:
the cryogenic device is used for carrying out cryogenic treatment on the workpiece and comprises a cryogenic workpiece table, the cryogenic workpiece table comprises a storage vehicle and a cryogenic track, and the storage vehicle is movably connected to the cryogenic track so that the storage vehicle moves the workpiece along the cryogenic track;
the heating device is used for heating the workpiece;
the heat preservation device is used for carrying out heat preservation treatment on the workpiece and comprises a heating furnace, and a heat preservation track is arranged in the heating furnace;
the workpiece carried by the object placing vehicle is arranged on the heating track of the heating device for heating treatment and/or on the heat insulation track of the heat insulation device for heat insulation treatment after the cryogenic treatment is completed by the cryogenic device.
Preferably, the vehicle further comprises a first connecting track, a second connecting track and a rotary reversing device, the first connecting track is connected to the deep cooling track and the warming track, the second connecting track is arranged on the rotary reversing device, and when the second connecting track is in butt joint with the warming track, the storage vehicle moves to the second connecting track from the warming track; when the rotary reversing device rotates to the second connecting rail to be in butt joint with the heat preservation rail, the object placing vehicle moves to the heat preservation rail from the second connecting rail.
Preferably, the heating furnace is provided with a furnace door and a motor connected with the furnace door for opening or closing the furnace door.
Compared with the prior art, the variable-rate heating device and the cryogenic treatment equipment have the advantages that the workpiece is sprayed with the heating medium through the heating nozzle at the heating mechanism for heating treatment, so that the heating rate of the workpiece can be increased, and the variable-rate heating effect is realized. And moreover, the heating medium is further pressurized and heated, and particularly the gaseous heating medium has the characteristic of high temperature, and the workpiece is heated in a spraying mode, so that the heating rate of the workpiece can be effectively increased, and the workpiece can be heated to a higher temperature.
Furthermore, the variable-rate heating device and the cryogenic treatment equipment can adjust the extension length and the spraying angle of the heating spray head according to the heating requirements, the size, the geometric characteristics and other factors of the workpiece, realize the partitioned and graded spraying heating, achieve the control of the residual stress, the organization and the performance of the workpiece according to the needs, reduce the replacement needs of cooling and heating media, and save the cost.
Furthermore, the cryogenic treatment equipment reasonably arranges the cryogenic device, the heating device and the heat preservation device to form an organic whole, and lifts, transfers, cools and heats the workpiece at each position, so that smooth transfer among the devices of the cryogenic treatment equipment is facilitated, transfer time is controlled by controlling the moving speed of the storage trolley, rapid cooling, heating and heat preservation of the workpiece are realized, residual stress and deformation caused by uneven temperature change are reduced, experiments can be accurately carried out according to the set process, heat treatment process parameters of the experimental workpiece can be accurately recorded, process repeatability is high, an accurate data base is provided for extrapolating heat treatment process parameters of workpieces with other dimensions according to the experimental result, and the process research is very important.
Drawings
In order to illustrate the embodiments more clearly, the drawings that will be needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are some examples of the disclosure, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic view of the structure of a cryogenic treatment plant.
FIG. 2 is a schematic diagram of the structure of a cryogenic plant.
FIG. 3 is a schematic diagram of the internal structure of a cryogenic plant.
FIG. 4 is a schematic structural diagram of a cryogenic workpiece stage and a first cryogenic mechanism.
FIG. 5 is a schematic diagram of the structure of the second cryogenic mechanism.
Fig. 6 is a schematic configuration diagram of the temperature increasing device.
Fig. 7 is a schematic view of the internal structure of the temperature increasing device.
FIG. 8 is a schematic view of the structure of the heat retaining device.
Description of the main elements
The following detailed description will further illustrate the disclosure in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the present disclosure can be more clearly understood, a detailed description of the present disclosure will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present disclosure, and the described embodiments are merely a subset of the embodiments of the present disclosure, rather than a complete embodiment. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.
In various embodiments, for convenience in description and not limitation of the disclosure, the term "coupled" as used in the specification and claims of the present disclosure is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
FIG. 1 is a schematic structural diagram of a cryogenic treatment plant, and as shown in FIG. 1, the cryogenic treatment plant includes a variable rate cryogenic device 10, a temperature raising device 20, a temperature keeping device 40, a first connecting track 50, a second connecting track 51, and a rotary reversing device 30. The first connecting track 50 is arranged between the deep cooling device 10 and the heating device 20, the second connecting track 51 is arranged between the heating device 20 and the heat preservation device 40, so that a workpiece 61 made of a metal material can move between the deep cooling device 10, the heating device 20 and the heat preservation device 40 through the storage vehicle 60, smooth transfer among devices of deep cooling treatment equipment is facilitated, transfer time of the workpiece 61 can be controlled by controlling moving speed of the storage vehicle 60, rapid cooling, heating and heat preservation of the workpiece 61 are achieved, and residual stress and deformation caused by uneven temperature change are reduced.
FIG. 2 is a schematic diagram of the construction of variable rate cryogenic plant 10, and FIG. 3 is a schematic diagram of the construction of the interior of cryogenic plant 10. As shown in fig. 2 and 3, the cryogenic device 10 is used for cryogenic treatment of a workpiece 61, and includes a cryogenic workpiece stage, a first cooling mechanism, a second cooling mechanism, and a transfer member.
FIG. 4 is a schematic structural diagram of a cryogenic workpiece stage and a first cryogenic mechanism. As shown in fig. 3 and 4, the cryogenic workpiece stage is used to move and carry a workpiece 61 to be cooled, including a cart 60 and the cryogenic track 16. Cryogenic track 16 is disposed within the first cooling mechanism and extends in a horizontal direction or has an inclination angle with the horizontal within a predetermined range. The cart 60 includes rollers and locking screws 62. The roller is rotatably arranged at the bottom of the storage cart 60, and the rolling surface of the roller is in contact with the deep cooling track 16, so that the storage cart 60 can bear the workpiece 61 to run on the deep cooling track 16. The pair of locking screws 62 are oppositely arranged on the object placing vehicle 60, and after the workpiece 61 is placed on the object placing vehicle 60, the locking screws 62 are rotated, so that the locking screws 62 move oppositely and abut against the workpiece 61 to fix the workpiece 61, and meanwhile, a hanging mechanism is provided for the movement of the object placing vehicle 60.
The first cryogenic mechanism is used for spraying cooling medium towards the workpiece 61 located on the cryogenic workpiece table, and comprises a cryogenic shell 11 (shown in fig. 2), a cryogenic nozzle installation module 151 and a plurality of cryogenic spray heads 15. In this embodiment, the bottom of the deep cooling casing 11 is open, and is detachably disposed on the deep cooling chamber 13 of the second deep cooling mechanism, so that the internal cavity of the deep cooling casing 11 is communicated with the deep cooling chamber 13 of the second deep cooling mechanism. At least one side surface of the cryogenic shell 11 is further provided with a cryogenic door 111, and the cryogenic door 111 can be opened or closed. During the cryogenic treatment, the cryogenic door 111 is in a closed state, and after the cryogenic treatment is completed, the storage vehicle 60 can carry the workpiece 61 to exit from the cryogenic door 111 along the cryogenic track 16.
The cryogenic nozzle mounting modules 151 are generally flat plate-like structures and are arranged in pairs in the cavity of the cryogenic housing 11. In this embodiment, the cryogenic nozzle mounting modules 151 extend in the vertical direction, are disposed opposite to each other, and are respectively located on both sides of the cryogenic track 16. The number of cryogenic spray heads 15 may be one or more. In this embodiment, cryogenic spray head 15 is movably mounted on cryogenic nozzle mounting module 151, and can move in a direction close to or away from cryogenic track 16 to adjust the relative position difference of cryogenic spray head 15 in this direction. In addition, the cryogenic spray head 15 may also be rotatably connected to the cryogenic nozzle installation module 151 for adjusting the spray angle of the cryogenic spray head 15. In the cooling process, the cooling speed of the workpiece 61 can be controlled by adjusting the spraying parameters (extension length, spraying angle, spraying medium and the like) of the cryogenic spray head 15, and the variable-rate cryogenic function is realized.
The tail part of the cryogenic spray head 15 is connected with a connecting pipeline, and a switch valve and an adjusting valve are arranged on the connecting pipeline. The other end of the connecting pipe is connected with a cooling medium, so that the cooling medium can be sprayed on the workpiece 61 through the cryogenic spray head 15 for cooling. The connecting pipes connecting the cryogenic spray heads 15 can be connected with the same type of cooling medium or different types of cooling medium, and the cooling medium can be liquid cooling medium or gaseous cooling gas. The pressure of the cooling medium sprayed by each cryogenic spray head 15 can be the same or different, so that the extension length, the spraying angle and the spraying pressure of the cryogenic spray heads 15 can be adjusted to various different sizes, materials and geometric characteristics by selecting the cooling medium, the spraying pressure and the cooling medium sprayed by the cryogenic spray heads 15, and the partitioned and graded variable-speed cooling of the workpiece 61 is realized. In order to realize controllable and repeatable cooling rate, a recovery pipeline of gaseous cooling medium can be arranged in the cavity of the deep cooling shell 11, and the recovery pipeline is connected with a vacuum pump and used for extracting gas in the cavity. In addition, a thermocouple can be arranged in the cavity and at the upper deep cooling position, so that the temperature of the cavity in the deep cooling shell 11 can be controlled.
FIG. 4 is a schematic diagram of the structure of the second cryogenic mechanism. As shown in fig. 4, the second cryogenic mechanism includes an open cryogenic chamber 13 and a cooling pipe 131. In the present embodiment, the deep cooling chamber 13 is provided below the deep cooling casing 11 of the first cooling mechanism. Between the deep cooling shell 11 and the deep cooling chamber 13 of the first cooling mechanism, a movable partition plate 12 is further arranged and used for isolating or communicating the accommodating cavity and the deep cooling chamber 13. When the partition plate 12 extends between the cryogenic chamber 13 and the cryogenic shell 11, the partition plate 12 can isolate the cavity of the cryogenic shell 11 from the cryogenic chamber 13; after the partition 12 is drawn out, the cavity of the cryogenic housing 11 is in communication with the cryogenic chamber 13.
Referring back to fig. 3 and 4, the transfer member is used to transfer the workpiece 61 between the first cryogenic mechanism and the second cryogenic mechanism, i.e., transfer the workpiece 61 between the cavity of the cryogenic housing 11 of the first cryogenic mechanism and the cryogenic chamber 13. The transfer means comprise a transfer track 17. The transfer rail 17 extends in the vertical direction, with one end located in the cavity of the cryogenic housing 11 and the other end extending to the cryogenic chamber 13. The cryrogenic track 16 of cryrogenic work piece platform through slider 161 movably connect in transfer track 17, with follow transfer track 17 removes extremely the deep cooling chamber 13, it is right work piece 61 carries out cryrogenic treatment.
In order to drive cryogenic track 16 to move along transfer track 17, the transfer unit further includes drive motor 14, crown block 143, traveling block 144, and connecting cord 142. Drive motor 14 is fixedly mounted on the top of deep cooling housing 11, and a winding drum 141 is connected to the output shaft, so that drive motor 14 can drive winding drum 141 to rotate. The fixed pulleys 143 are provided in plurality and rotatably connected to the inner wall of the cryogenic casing 11, and the position of the connection rope 142 can be changed so that the connection rope 142 runs along a proper position without blocking the movement of the cart 60 along the cryogenic track 16 or the transfer track 17. A traveling pulley 144 is rotatably connected to the cryogenic track 16. One end of the connecting rope 142 is connected to the deep cooling rail 16, and the other end is connected to the winding drum 141 of the driving motor 14 after passing around the movable pulley 144 and the fixed pulley 143. Thus, under the driving of the driving motor 14, the connection rope 142 pulls the cryogenic track 16 to ascend or descend along the transfer track 17.
Fig. 6 is a schematic configuration diagram of the temperature increasing device 20. The temperature increasing device 20 is configured to perform a heating temperature increase process on the workpiece 61. As shown in fig. 6, the temperature raising device 20 includes a temperature raising stage, a temperature raising mechanism, and a water tank 22. The temperature-raising workpiece table is used for placing and clamping the workpiece 61, and the temperature-raising mechanism is used for spraying a temperature-raising medium on the workpiece 61 to heat and raise the temperature of the workpiece 61 at a variable speed. The water tank 22 is used for collecting the heating medium sprayed by the heating spray head 23,
fig. 7 is a schematic internal structural diagram of the temperature raising device 20, and as shown in fig. 7, the temperature raising workpiece stage includes a temperature raising rail 24 for carrying the cart 60, and the cart 60 carries the workpiece 61, and can move along the temperature raising rail 24 and stay on the temperature raising rail 24 to perform the temperature raising process.
The heating mechanism is used for spraying a heating medium on the workpiece 61 and comprises a heating shell 21 (shown in fig. 6), a heating nozzle installation module 231 and a plurality of heating spray heads 23. In this embodiment, the temperature-raising housing 21 has a cavity and an opening at the bottom, and the temperature-raising workpiece stage and the temperature-raising nozzle 23 are disposed in the cavity. The heating shell 21 is detachably arranged above the water tank 22, and the cavity is communicated with the water tank 22 to collect the heating medium sprayed by the heating nozzle 23. In this embodiment, two exhaust holes (not shown in the figure) are further disposed at the top of the warming housing 21 of the warming mechanism, and an exhaust fan (not shown in the figure) corresponding to the exhaust holes is clamped in the exhaust holes, so that the exhaust fan exhausts the gas in the cavity of the warming housing 21 through the exhaust holes.
The temperature raising nozzle mounting blocks 231 have a substantially flat plate-like structure and are provided in pairs in the cavities of the temperature raising housing 21. In the present embodiment, the temperature-raising nozzle mounting modules 231 extend in the vertical direction, are disposed to face each other, and are located on both sides of the temperature-raising rail 24. The number of the temperature-increasing spray heads 23 may be one or more. In the present embodiment, the temperature-increasing nozzle 23 is movably mounted on the temperature-increasing nozzle mounting block 231, and can move in a direction approaching or departing from the temperature-increasing rail 24 to adjust the relative position difference of the temperature-increasing nozzle 23 in this direction. Meanwhile, the temperature-raising spray head 23 may also be rotatably connected to the temperature-raising nozzle mounting module 231 for adjusting the spraying angle of the temperature-raising spray head 23.
In addition, the tail of the heating spray head 23 is connected to a connecting pipeline, and a switch valve and an adjusting valve are arranged on the connecting pipeline. The other end of the connecting pipeline is connected with a heating medium, so that the heating medium can be sprayed on the workpiece 61 through the heating spray head 23 to be heated. The connecting pipeline connected with the heating spray head 23 can be connected with the same type of heating medium or different types of heating medium, and the heating medium can be high-temperature liquid or gaseous high-temperature gas. The pressure of the heating medium sprayed by each heating nozzle 23 can be the same or different, so that the extension length, the spraying angle and the spraying pressure of the heating nozzle 23 or the type of the heating medium can be adjusted according to the size, the material and the geometric characteristics of the workpiece 61 by setting the parameters of the heating medium, the spraying pressure, the type of the heating medium and the like sprayed by the heating nozzles 23, the switching of different heating media is realized by controlling a switch valve, the requirements of heating rates and heating temperatures with large differences are met, and the partitioned and graded uniform heating of the workpiece 61 is realized. In addition, the temperature raising mechanism further comprises a temperature sensor arranged in the cavity of the temperature raising shell 21 and used for detecting the temperature of the cavity of the temperature raising shell 21.
The top of the water tank 22 is open, is arranged below the heating nozzle 23 of the heating mechanism and is in butt joint with the cavity of the heating shell 21, and is used for collecting and storing the liquid heating medium sprayed by the heating nozzle 23. In the present embodiment, a drain pipe (not shown) is further provided at the bottom of the water tank 22 for discharging the liquid temperature-raising medium in the water tank 22.
Fig. 8 is a schematic structural view of the temperature keeping device 40. As shown in fig. 8, the heat retaining device 40 is used to retain the heat of the workpiece 61. The heat preservation device 40 comprises a heating furnace 41, and a heat preservation track 42 is arranged in the heating furnace 41. The heating furnace 41 is further provided with a furnace door 411 and a motor (not shown in the drawings) connected to the furnace door 411 for opening or closing the furnace door 411.
In the present embodiment, the cryogenic device 10 and the warming device 20 are arranged in a straight line, the heat preservation device 40 is disposed at the right rear side of the warming device 20, in order to facilitate the transmission and transfer of the workpiece 61, the cryogenic treatment equipment further includes a rotary reversing device 30, and the rotary reversing device 30 is disposed between the warming device 20 and the heat preservation device 40.
Can move between deep cooling device 10, rising temperature device 20 and heat preservation device 40 in order to put thing car 60, first connection track 50 connect in rising temperature device 20's deep cooling track 16 and rising temperature track 24, second connection track 51 connect in rising temperature track 24 with heat preservation track 42. Specifically, the second connecting rail 51 is disposed on the rotating reversing device 30. The rotary reversing device 30 comprises a rotatable turntable, and when the second connecting rail 51 is butted with the warming rail 24, the storage cart 60 moves from the warming rail 24 to the second connecting rail 51; when the rotary reversing device 30 rotates to the second connecting rail 51 to abut against the heat-preserving rail 42, the cart 60 moves from the second connecting rail 51 to the heat-preserving rail 42 through the oven door 411. After the cryrogenic processing is accomplished to work piece 61 that storage vehicle 60 bore, pass through in proper order first connecting track 50 removes extremely heating up device 20's intensification track 24 carries out the intensification processing, and the warp second connecting track 51 removes extremely heat preservation device 40's heat preservation track 42 carries out the heat preservation processing.
The operation of the above-described cryogenic treatment plant is described in detail below.
First, a metal workpiece 61 to be heat-treated is attached to the cart 60 by the locking screw 61, and the cart 60 is controlled to move to the deep cooling track 16 of the deep cooling apparatus 10.
Then, parameters such as cooling medium (which may be gaseous or liquid cooling medium), extension length, spraying angle and the like sprayed by the cryogenic spray head 15 are set according to the size, geometrical characteristics and the like of the workpiece 61, and the workpiece 61 is sprayed with the cooling medium, so that the workpiece 61 can be cooled in a grading manner and in a partitioning manner, and variable-speed cooling is realized.
After the storage cart 60 carries the workpiece 61 to perform deep cooling on the deep cooling track 16 of the deep cooling device 10 to reach a specified temperature, the driving motor 14 pulls the deep cooling track 16 to move downwards along the transfer track 17 to the deep cooling chamber 13 through the connecting rope 142, and the temperature in the deep cooling chamber 13 is controlled through the cooling pipeline 131 and the temperature sensor in the deep cooling chamber 13, so that the workpiece 61 continues to be cooled in the deep cooling chamber 13.
Then, the driving motor 14 drives the deep cooling rail 16 to move upwards to the accommodating cavity of the deep cooling shell 11, and when the deep cooling rail 16 and the first connecting rail 50 are at the same height, the storage vehicle 60 is controlled to carry the workpiece 61 to move along the deep cooling rail 16. The storage cart 60 moves to the first connecting track 50 from the deep cooling door of the deep cooling casing 11, and moves to the warming casing 21 of the warming device 20 along the first connecting track 50, and stays on the warming track 24 in the warming casing 21.
Then, the spraying parameters of the temperature-raising nozzle 23 are set according to the parameters of the size, the geometric characteristics and the like of the workpiece. The spraying parameters comprise a sprayed temperature raising medium (which can be a gaseous or liquid temperature raising medium), a protruding length, a spraying angle and the like, and the temperature raising medium is sprayed to the workpiece 61, so that the workpiece 61 can be subjected to graded temperature raising and zone temperature raising, and variable-rate temperature raising control is realized.
Then, after the temperature raising process of the workpiece 61 is completed, the rotating reversing device 30 rotates to an angle of abutting against the second connecting rail 51, and the cart 60 carries the workpiece 61 and moves along the temperature raising rail 16, passes through the temperature raising door 211 of the temperature raising housing 21, and moves onto the second connecting rail 51.
Finally, after the rotary reversing device 30 rotates to the position where the second connecting rail 51 abuts against the heat-preserving rail 42 in the heating furnace 41, the storage vehicle 60 is controlled to enter the heating furnace 41 of the heat-preserving device 40 from the furnace door 411 of the heating furnace 41, and the storage vehicle 60 stays on the heat-preserving rail 42 in the heating furnace 41 to carry out heat-preserving treatment, so that the whole heat treatment process is finally completed.
The heat treatment process is subjected to three processes of deep cooling, temperature rising and heat preservation. However, one skilled in the art can select any one of the heat treatment processes according to actual needs, and does not have to completely go through the three heat treatment processes.
After the cryogenic device 10 and the cryogenic treatment equipment cool the workpiece 61 to the specified temperature through the cooling medium sprayed by the cryogenic spray nozzle 15 at the first cryogenic mechanism, the workpiece table bearing the workpiece 61 is moved to the cooling chamber of the second cooling structure along the transfer track 17 through the transfer component, and heat preservation is carried out in the specified dimension, so that the residual stress, the structure and the performance of the workpiece 61 can be controlled as required, the heat treatment effect of the workpiece 61 is improved, the replacement requirements on cooling and heating media are reduced, and the cost is saved.
Furthermore, the first cooling mechanism of the deep cooling device 10 can realize controllable cooling in a partitioned and graded manner according to the material, the geometric characteristics, the technical requirements and the like of the workpiece 61, so as to give full play to the characteristics of the material and realize variable speed cooling. The second cooling mechanism can be used for deep cooling and heat preservation after the workpiece 61 reaches the specified temperature, and the heat treatment effect of the workpiece 61 is improved.
Further, the temperature raising device 20 described above can perform the temperature raising process by spraying the temperature raising medium onto the workpiece 61 at the temperature raising mechanism through the temperature raising nozzle 23, and can increase the temperature raising rate of the workpiece 61. Moreover, the temperature raising medium is further pressurized and heated, and particularly the gaseous temperature raising medium has the characteristic of high temperature, and the temperature raising treatment of the workpiece 61 in a spraying mode can effectively improve the temperature raising rate of the workpiece 61 and raise the temperature to a higher temperature.
Moreover, the heating device 20 can also adjust the extension length and the spraying angle of the heating nozzle 23 according to the heating requirements, the size, the geometric characteristics and other factors of the workpiece 61, so as to realize the partitioned and graded spraying heating, realize the variable-speed heating effect, achieve the control on the residual stress, the organization and the performance of the workpiece 61 as required, reduce the replacement requirements on cooling and heating media, and save the cost.
Furthermore, the deep cooling device 10 and the deep cooling treatment equipment form the deep cooling device 10, the heating device 20 and the heat preservation device 40 into an organic whole through reasonable arrangement, and the processes of lifting, transferring, cooling, heating and the like of the workpiece 61 at each position, thereby facilitating smooth transfer among devices of the cryogenic treatment equipment, controlling the transfer time to be controllable by controlling the moving speed of the storage vehicle 60, thereby realizing the rapid cooling and heating of the workpiece 61 and the heat preservation, simultaneously reducing the residual stress and the deformation caused by uneven temperature change, but also can accurately carry out experiments according to the set process, can accurately record the heat treatment process parameters of the experimental workpiece 61, has high process repeatability, meanwhile, an accurate data basis is provided for extrapolating the heat treatment process parameters of the workpieces 61 with other dimensions according to the experimental results, which is very important for process research.
In several embodiments provided in the present disclosure, it will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.
Although the present disclosure has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present disclosure.
Claims (10)
1. A variable-rate temperature increasing apparatus for performing temperature increasing processing on a workpiece, comprising:
the temperature-rising workpiece table is used for placing a workpiece;
the temperature raising mechanism comprises one or more temperature raising spray heads and is used for spraying a temperature raising medium towards the workpiece positioned on the temperature raising workpiece table so as to heat the workpiece;
and the water tank is arranged below the heating spray head of the heating mechanism and used for receiving and storing the heating medium sprayed by the heating spray head.
2. The variable rate heating apparatus according to claim 1, wherein the heating workpiece stage includes a heating track for carrying a carriage, the carriage carrying the workpiece and moving to the heating track to perform a heating process.
3. The variable rate temperature increasing device according to claim 2, wherein the temperature increasing mechanism further comprises a pair of temperature increasing nozzle installation modules disposed oppositely, the temperature increasing rail being located between the temperature increasing nozzle installation modules, the temperature increasing head being movably connected to the temperature increasing nozzle installation modules and facing the temperature increasing work stage to adjust a protruding length of the temperature increasing head.
4. The variable rate temperature increasing device according to claim 3, wherein the temperature increasing nozzle head is connected to different connecting pipes to spray the corresponding temperature increasing medium toward the workpiece, and the temperature increasing nozzle head is rotatably connected to the temperature increasing nozzle mounting module to adjust a spray angle of the temperature increasing nozzle head.
5. The variable rate heating apparatus according to claim 1, wherein the heating mechanism further comprises a heating housing, the heating housing has a cavity, the heating stage and the heating nozzle are disposed in the cavity, the heating housing is disposed above the water tank, and the cavity is communicated with the water tank to receive the heating medium sprayed by the heating nozzle.
6. The variable rate heating apparatus according to claim 5, wherein the heating mechanism further comprises one or more exhaust fans, the heating enclosure is provided with exhaust holes corresponding to the exhaust fans, and the exhaust fans are connected to the heating enclosure such that the exhaust fans exhaust the gas in the cavities of the heating enclosure through the exhaust holes.
7. The variable rate heating apparatus of claim 6, wherein said warming mechanism further comprises a temperature sensor disposed within the cavity of said warming housing for sensing the temperature of the cavity of said warming housing.
8. A cryogenic treatment plant, comprising:
the cryogenic device is used for carrying out cryogenic treatment on the workpiece and comprises a cryogenic workpiece table, the cryogenic workpiece table comprises a storage vehicle and a cryogenic track, and the storage vehicle is movably connected to the cryogenic track so that the storage vehicle moves the workpiece along the cryogenic track;
a temperature increasing apparatus according to any one of claims 1 to 7, for subjecting the workpiece to a heating temperature-increasing treatment;
the heat preservation device is used for carrying out heat preservation treatment on the workpiece and comprises a heating furnace, and a heat preservation track is arranged in the heating furnace;
the workpiece carried by the object placing vehicle is arranged on the heating track of the heating device for heating treatment and/or on the heat insulation track of the heat insulation device for heat insulation treatment after the cryogenic treatment is completed by the cryogenic device.
9. The cryogenic treatment plant according to claim 8, further comprising a first connection rail connected to the cryogenic rail and the warming rail, a second connection rail provided to the rotary reversing device, and a rotary reversing device, wherein the cart moves from the warming rail to the second connection rail when the second connection rail is butted to the warming rail; when the rotary reversing device rotates to the second connecting rail to be in butt joint with the heat preservation rail, the object placing vehicle moves to the heat preservation rail from the second connecting rail.
10. The cryogenic treatment apparatus according to claim 9, wherein the heating furnace is provided with an oven door and a motor connected to the oven door for opening or closing the oven door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114807547A (en) * | 2022-05-25 | 2022-07-29 | 江苏明越精密高温合金有限公司 | Method for reducing quenching residual stress of die forging |
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