CN115125371A - Device for controlling temperature of aluminum alloy during heating and quenching - Google Patents
Device for controlling temperature of aluminum alloy during heating and quenching Download PDFInfo
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- CN115125371A CN115125371A CN202110330197.5A CN202110330197A CN115125371A CN 115125371 A CN115125371 A CN 115125371A CN 202110330197 A CN202110330197 A CN 202110330197A CN 115125371 A CN115125371 A CN 115125371A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a device for controlling the temperature of aluminum alloy during heating quenching, which comprises: the device comprises a guide rail seat, a guide rail, a sliding block, a box body, a heating block driving element, a first heating block and a second heating block guide rail seat, wherein the first heating block and the second heating block are arranged in pairs. The sliding block is connected with the guide rail in a sliding manner so as to slide along the guide rail in a first direction; the first heating blocks arranged in pairs and the second heating blocks arranged in pairs are arranged in the box body, and the box body is fixedly arranged on the sliding block; the heating block driving element is connected with the first heating block and the second heating block so as to drive the two first heating blocks to be separated from each other or relatively close to each other in the second direction and drive the two second heating blocks to be separated from each other or relatively close to each other in the second direction, wherein the second direction is perpendicular to the first direction.
Description
Technical Field
The invention relates to a temperature control device, in particular to an aluminum alloy temperature control device.
Background
As is well known, the high-strength aluminum alloy has excellent performance and has wide application prospect in the fields of aerospace and automobile light weight. However, in the conventional heat treatment forming process, the aluminum alloy may be bent due to the problems of uneven heating and improper cooling rate, and the volume of the aluminum alloy may be changed due to improper heating temperature and cooling rate. Of course, if the instantaneous thermal stress is insufficient during quenching, the aluminum alloy can crack, so that the traditional heat treatment equipment cannot meet the technological requirements of the high-strength aluminum alloy.
In order to solve the above problems, the prior art proposes a current heating method by: when the aluminum alloy needs to be heated in an electric heating salt bath or a low-temperature furnace, natural gas or electricity is used as heating energy, and the best heating effect is achieved. The electrical heating or resistance elements can be used at higher temperatures and the induction heat treatment apparatus can achieve smaller plate grain sizes.
However, the traditional resistance wire heating method cannot meet the temperature control requirements of rapid temperature rise, temperature reduction and the like under a high temperature condition, and the method adopting current heating and eddy current induction heating still may cause uneven temperature field distribution and further cause bending of the test piece.
Chinese patent publication No. CN111485186A, entitled "method and apparatus for heat treatment of aluminum alloy material" on publication No. 8/4/2020, discloses a method and apparatus for heat treatment of aluminum alloy material, which uses a heating furnace and a fan to heat and cool aluminum alloy, and controls the temperature by adjusting the motor power and the fan rotation speed, thereby improving the heat treatment efficiency. However, when the heat treatment method is adopted, the test piece needs to be taken out again when the test piece is subjected to the next temperature treatment, the process is complicated, and the subsequent series of tests are not facilitated.
Chinese patent publication No. CN210886118U, published as 2020, 6 and 30 days, entitled "a novel aluminum alloy solution heat treatment furnace", discloses a device for heating aluminum alloy by the mutual cooperation of a motor, a roller, a furnace plate, an electric heating wire and a heat-insulating layer, which can improve the intensity of a heat source. However, the heating furnace realizes the heat preservation function through a plurality of groups of heating grooves separated by partition plates, and the method has low efficiency and the heat preservation effect is lower than expected.
Therefore, there is a need for a heat treatment apparatus suitable for efficiently and stably controlling the temperature rise and decrease speed and magnitude in the heat treatment process of wrought aluminum alloys, wherein the apparatus structure is stable and reliable, so that the aluminum alloy can efficiently obtain the required structure, structure and performance, and the plasticity, processability and product usability of the aluminum alloy can be improved and enhanced.
Based on the above, aiming at the defects and shortcomings of the prior art, the invention is expected to obtain a device for controlling the temperature of heating quenching of aluminum alloy, which can realize stable and rapid heating, rapid cooling, dynamic heat preservation and other environmental controls of the deformed aluminum alloy in the complex temperature path process of the heat treatment of the deformed aluminum alloy, and can smoothly transfer a test piece by adopting the device so as to carry out the tensile test subsequently and efficiently, thereby effectively improving and enhancing the hot processing performance, the mechanical performance, the finished product performance and the plastic performance of the heat treatment of the deformed aluminum alloy in the fields of aerospace, automobile manufacturing and the like, and further providing technical support for the subsequent tensile test.
Disclosure of Invention
One of the purposes of the invention is to provide a device for controlling the temperature of heating quenching of an aluminum alloy, which can realize the stable and rapid heating, rapid cooling, dynamic heat preservation and other environmental controls of the deformed aluminum alloy in the complex temperature path process of the heat treatment of the deformed aluminum alloy.
In order to achieve the purpose, the invention provides a device for controlling the temperature of heating quenching of an aluminum alloy, which comprises:
the guide rail seat is provided with a guide rail;
a slider slidably coupled to the guide rail to slide along the guide rail in a first direction;
the box body is fixedly arranged on the sliding block;
the first heating blocks and the second heating blocks are arranged in pairs and are arranged in the box body;
and the heating block driving element is connected with the first heating blocks and the second heating blocks so as to drive the two first heating blocks to be separated or relatively close to each other in the second direction and drive the two second heating blocks to be separated or relatively close to each other in the second direction, wherein the second direction is vertical to the first direction.
Further, in the device for controlling the temperature of the aluminum alloy during the heating quenching according to the present invention, the heating block driving element includes:
a panel;
one end of the sliding rod is connected with the panel, and the other end of the sliding rod penetrates through the box body to be connected with the first heating block or the second heating block;
and the elastic element is arranged between the panel and the box body so as to drive the two first heating blocks to be relatively close to each other in the second direction and drive the two second heating blocks to be relatively close to each other in the second direction under the condition that the external force is removed.
Furthermore, in the device for heating, quenching and temperature controlling of the aluminum alloy, disclosed by the invention, each sliding rod is sleeved with a corresponding flange, and the flanges are fixedly connected with the wall of the box body.
Further, in the device for controlling the temperature of the aluminum alloy through heating quenching, a hollow-out part is arranged on the panel.
Furthermore, in the device for heating, quenching and temperature controlling of the aluminum alloy, each first heating block or each second heating block is correspondingly connected with the two sliding rods.
Further, in the device for controlling temperature of heating quenching of aluminum alloy according to the present invention, the first heating block and the second heating block each include:
the heating block body is internally provided with a cavity;
the heating rod is arranged in the cavity;
and the thermocouple is arranged in the heating block body.
In the technical scheme of the invention, the first heating block and the second heating block can also comprise heating rods arranged in the inner cavity of the heating block body, and the heating rods can be adopted to rapidly heat the heating blocks so as to improve the heating rate of the first heating block and/or the second heating block when the sample is heated.
Further, in the device for controlling the temperature of the aluminum alloy during heating quenching of the invention, the device further comprises:
an input heat source connected to the heating rod;
and the control device is respectively connected with the input heat source and the thermocouple, controls the heating temperatures of the first heating block and the second heating block, and receives a temperature feedback signal transmitted by the thermocouple.
In the above technical solution of the present invention, the control device may control the heating temperatures of the first heating block and the second heating block, and receive a temperature feedback signal transmitted by the thermocouple. Therefore, the control device in the device can utilize the thermocouple wire to feed back the temperature change in real time in the whole process based on the temperature feedback signal transmitted by the thermocouple, so as to realize the purpose of efficiently controlling the temperature change in real time, control the temperature fluctuation of the first heating block and/or the second heating block, ensure the stability of the temperature fluctuation and improve the uniformity of the internal temperature of the first heating block and/or the second heating block.
Further, in the device for controlling the temperature of the heating quenching of the aluminum alloy, the control device controls the heating temperature of the first heating block to be higher than the heating temperature of the second heating block.
In the technical scheme, the heating temperature of the first heating block is different from that of the second heating block, and the control device can control the heating temperature of the first heating block to be higher than that of the second heating block, so that the sample can be cooled to the heating temperature of the second heating block by the original high temperature in the heating process of the second heating blocks which are arranged in pairs, and the purposes of quickly cooling after heating and efficiently finishing the quenching process are achieved.
Furthermore, in the device for heating, quenching and temperature controlling of the aluminum alloy, provided by the invention, the box body is provided with a runway-shaped hole.
Further, in the device for heating, quenching and temperature controlling of the aluminum alloy, both the first heating block and the second heating block are copper blocks.
Compared with the prior art, the device for controlling the temperature of the aluminum alloy during heating quenching has the advantages and beneficial effects as follows:
the device for controlling the temperature of the heating quenching of the aluminum alloy can be effectively applied to the complex temperature path process of the heat treatment of the wrought aluminum alloy, and realizes the environmental control of stable rapid heating, rapid cooling, dynamic heat preservation and the like of the wrought aluminum alloy.
By adopting the device, the test piece can be stably transferred so as to be conveniently and efficiently subjected to subsequent tensile test, thereby effectively improving and improving the thermal processing performance, mechanical performance, finished product performance and plastic performance of the heat treatment of the wrought aluminum alloy in the fields of aerospace, automobile manufacturing and the like, and further providing technical support for subsequent tensile test.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for controlling temperature in heating quenching of aluminum alloy according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a slidable part of the device for controlling the temperature of the aluminum alloy during heating quenching according to an embodiment of the invention.
FIG. 3 is an assembly view of a box and a slide block of the device for controlling the temperature of aluminum alloy during heating quenching according to an embodiment of the invention.
Fig. 4 is a partially exploded view of the case and slider assembly shown in fig. 3.
FIG. 5 is an assembly diagram of a heating block driving element and a first heating block and a second heating block of the device for controlling the temperature of the aluminum alloy during heating quenching according to one embodiment of the invention.
Fig. 6 is a structural front view of an assembly structure of the heating block driving element shown in fig. 5 with the first heating block and the second heating block.
FIG. 7 is a schematic structural diagram of a first heating block of an apparatus for controlling temperature of aluminum alloy during heating quenching according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of heating a tensile test piece by the device for controlling the temperature of the aluminum alloy through heating quenching in an embodiment of the invention.
Detailed Description
The device for controlling the temperature of the aluminum alloy during the heating quenching according to the present invention will be further described with reference to the following specific examples and the attached drawings, but the description should not be construed as limiting the invention.
FIG. 1 is a schematic structural diagram of an apparatus for controlling temperature of aluminum alloy during heating quenching according to an embodiment of the present invention.
As shown in fig. 1, in this embodiment, the apparatus for controlling temperature in heating quenching of aluminum alloy according to the present invention may include: the device comprises a guide rail seat 1, a guide rail 2, a slide block 3, a box body 4, a heating block driving element 5, a first heating block 6 and a second heating block 7, wherein the first heating block and the second heating block are arranged in pairs. The guide rail 2 is arranged on the guide rail seat 1, the guide rail 2 is connected with the sliding block 3 in a sliding mode, the box body 4 is fixedly arranged on the sliding block 3, the box body 4 is internally provided with a first heating block 6 and a second heating block 7 which are arranged in pairs, and the heating block driving element is connected with the first heating block 6 and the second heating block 7.
In the present embodiment, the slider 3 of the apparatus according to the present invention is slidably coupled to the guide rail 2, and the sliding coupling enables the slider 3 to slide along the guide rail 2 in the first direction, and enables the slider 3, the housing 4, the heating block driving element 5, the first heating block 6 provided in pair, and the second heating block 7 provided in pair to slide along the guide rail 2 in the first direction, which may be specifically as shown in fig. 2 described below.
FIG. 2 is a schematic structural diagram of a slidable part of the device for controlling the temperature of the aluminum alloy during heating quenching according to an embodiment of the invention.
As shown in fig. 2, in the present embodiment, the slider 3, the housing 4, the heating block driving element 5, the first heating block 6 disposed in pair, and the second heating block 7 disposed in pair according to the present invention may collectively constitute a slidable portion of the apparatus according to the present invention, which is slidable in the first direction along the guide rail 2.
FIG. 3 is an assembly view of a box and a slide block of the device for controlling the temperature of aluminum alloy during heating quenching according to an embodiment of the invention.
Fig. 4 is a partially exploded view of the case and slider assembly shown in fig. 3.
As shown in fig. 3 and 4, in the present embodiment, the slider 3 is further provided with a hole 31 so that the slide rail 2 can pass through the slider 3, thereby achieving the sliding connection between the slider 3 and the guide rail 2. Accordingly, in the present embodiment, the hole 31 of the slider 3 may further be provided with a bearing 9, and an operator may apply a lubricant to the bearing 9 to make the slider 3 slide more smoothly along the guide rail 2 in the first direction.
Furthermore, as can be seen with further reference to fig. 3, the case 4 is fixedly disposed on the slider 3, and in the present embodiment, the case 4 may include: a bottom plate 41, an upper side plate 42, a rear main plate 43, a front main plate 44, and a lower side plate 45. The bottom plate 41 of the box 4 may be provided with a threaded hole 411 (as shown in fig. 4), and the bottom plate 41 and the slider 3 may be fixedly connected by a bolt.
Accordingly, referring to fig. 4 in combination, in the present embodiment, the upper side plate 42 and the lower side plate 45 of the box 4 according to the present invention are disposed between the front main plate 44 and the rear main plate 43 of the box 4, which can also be fixed by bolting. In the present embodiment, the lower side plate 45 is significantly different from the upper side plate 42 in structure, and the bottom plate 41 of the case 4 may be prefabricated with holes 412 in advance so that the two lower side plates 45 of the case 4 can be correspondingly inserted into the holes 412 of the bottom plate 41.
As can be seen by referring to fig. 3 and fig. 4, in the present embodiment, the rear main plate 43 is further provided with a threaded hole 431 and a hole 432; correspondingly, the front main plate 44 is also provided with a threaded hole 441, a hole 442 and a racetrack-type hole 443.
FIG. 5 is an assembly view of a heating block driving element and a first heating block and a second heating block of the device for controlling the temperature of aluminum alloy during heating quenching according to one embodiment of the invention.
Fig. 6 is a structural front view of an assembly structure of the heating block driving element shown in fig. 5 with the first heating block and the second heating block.
As shown in fig. 5 and 6, in the present embodiment, the heating block driving element 5 according to the present invention is connected to the first heating block 6 and the second heating block 7 which are provided in pairs.
As can be seen with further reference to fig. 5 and 6, in this embodiment, the heating block driving element 5 according to the present invention may include: a panel 51, a slide rod 52 and an elastic element 53. One end of the sliding rod 52 is connected to the panel 51, and the other end of the sliding rod can penetrate through the front main plate 44 or the rear main plate 43 of the box 4 according to the present invention, and the sliding rod 52 can penetrate through the hole 442 on the front main plate 44 or the hole 432 on the rear main plate 43 to connect with the first heating block 6 or the second heating block 7 in the box 4.
Accordingly, in the present invention, the elastic element 53 in the heating block driving element 5 can be disposed between the panel 51 and the case 4 of the device to bring the two first heating blocks 6 and the two second heating blocks 7 relatively together in the second direction when the external force is removed. Wherein the second direction is perpendicular to the first direction in which the slider 3 slides along the guide rail 2. In the present embodiment, the elastic element 53 may be a spring.
In this embodiment, each sliding rod 52 of the heating block driving element 5 according to the present invention is sleeved with a corresponding flange 54, and the flange 54 can be fixedly connected with the wall of the box 4. Referring to fig. 3, in this embodiment, the rear main plate 43 and the front main plate 44 of the case 4 of the apparatus of the present invention are respectively provided with a threaded hole 431 and a threaded hole 441, and the flange 54 sleeved on the sliding rod 52 can effectively fit the threaded hole 431 and the threaded hole 441, and is fixedly connected to the rear main plate 43 and the front main plate 44 of the case 4 by using a bolt connection manner.
FIG. 7 is a schematic structural diagram of a first heating block of an apparatus for controlling temperature of aluminum alloy during heating quenching according to an embodiment of the present invention.
As shown in fig. 7, in the present embodiment, the first heating block 6 according to the present invention may include a heating block body 61. The heating block body 61 may be provided with a slide bar hole 611, a heating rod hole 612, and a thermocouple wire hole 613.
In this embodiment, a cavity is provided in the heating block body 61, the heating rod can enter the cavity through a heating rod opening 612 formed in the heating block body 63, and the thermocouple can enter the heating block body 61 through a thermocouple wire opening 613 formed in a side wall of the heating block body 61. As can be seen, in the present invention, the first heating block 6 may include a heating block body 61, a heating rod (not shown in fig. 7), and a thermocouple (not shown in fig. 7).
Accordingly, in the present embodiment, the first heating block 6 and the second heating block 7 may have the same structure, and therefore, the second heating block 7 may also include: heating block body, heating rod and thermocouple.
In summary, as can be seen by referring to fig. 2, 3 and 5 in combination, in the present embodiment, the box 4 includes the first heating blocks 6 and the second heating blocks 7; the heating block driving element 5 outside the housing 4 may consist of 8 sliding bars 52, 8 flanges 54, 8 springs and 2 panels 51. Wherein, every two slide bars 52 are connected with a first heating block 6 or a second heating block 7, the slide bars 52 can be inserted into the slide bar holes 611 of the first heating block 6 and the second heating block 7, respectively, to realize the connection of the heating block driving element 5 with the first heating block 6 and the second heating block 7.
Accordingly, in this embodiment, each sliding rod 52 of the heating block driving element 5 may first pass through the front main plate 44 or the rear main plate 43 of the housing 4, then pass through the flange 54, and finally be connected to the panel 51.
In order to further explain the situation that the device for controlling the temperature of the aluminum alloy during heating quenching is used for heating the tensile test piece, the invention adopts a specific embodiment for explanation.
In this embodiment, the guide rail seat 1 of the device for controlling the temperature of the aluminum alloy through heating quenching according to the present invention is fixed on the existing stretching clamp by bolts, and the slide block 3 in the device can slide left and right along the guide rail 2. An operator can clamp the upper end 101 of the tensile test piece 10 by using the upper clamping end of the existing tensile clamp, so that the tensile clamp can be communicated with the tensile test piece 10 to move downwards in the vertical direction; at this time, the operator can control the device for controlling the temperature of the heating quenching of the aluminum alloy according to the present invention, and pull the panel 51 in the heating block driving element 5 to separate the first heating blocks 6 arranged in pairs.
By controlling the tensile fixture, the operator can control the tensile test piece 10 to slowly pass through the gap between the paired first heating blocks 6, so that the tensile test piece 10 moves downward in the vertical direction between the gaps of the paired first heating blocks 6 until the lower end 102 of the tensile test piece 10 can be clamped by the lower clamping end of the existing tensile fixture. At this time, the heating block pairs completely cover the gauge length section of the tensile test piece 10, and then the control releases the panel 51, under the action of the elastic element 53, the first heating blocks 6 arranged in pairs can effectively clamp and fix the tensile test piece 10, at this time, the upper and lower clamping ends of the existing tensile fixture clamp the upper end 101 and the lower end 102 of the tensile test piece 10 respectively, and the specific structure thereof can be as shown in fig. 8 described below.
Fig. 8 is a schematic structural diagram of heating a tensile test piece by the device for controlling the temperature of the aluminum alloy through heating quenching in an embodiment of the invention.
As shown in fig. 8, the first heating blocks 6 arranged in pairs clamp and fix the tensile test piece 10 by the elastic member 53, and the structure shown in fig. 8 does not show a tensile jig of the prior art.
Correspondingly, the device for controlling the temperature of the aluminum alloy in the heating quenching process further comprises the following steps: a heat source and a control device. Wherein, the input heat source can be connected with a heating rod arranged in the heating block body; the control device is connected with the input heat source and the thermocouple respectively, and can control the heating temperature of the first heating block 6 and the second heating block 7 and receive the temperature feedback signal transmitted by the thermocouple.
In this embodiment, after the tensile test piece 10 is clamped and fixed, the operator may control to turn on the input heat source through the control device, so that the heating rod obtains the heat source to heat the tensile test piece 10. At this time, the operator may control the first heating blocks 6 provided in pairs to heat the tensile specimen 10 to 535 ℃.
After the first stage heating is completed, the operator may control the pull panel 51 again to separate the first heating block 6 from the tensile test piece 10, and at the same time control the quick slide block 3 to transfer the tensile test piece 10 to a gap between the pair of second heating blocks 7. The control then releases the panel 51 and the second heating blocks 7 arranged in pairs clamp the tensile test piece 10 under the action of the elastic elements 53. An operator heats the second pair of heating blocks to the deformation temperature of the tensile test in advance through the temperature control system, and can cool or heat the tensile test piece 10 after heating. The heating temperature of the second heating blocks 7 arranged in pairs is generally lower than that of the first heating blocks, so as to simulate the cooling process of actual hot stamping. The tensile test piece 10 is kept warm during the stretching process until the stretching is finished.
In the second stage heating process, the tensile test piece 10 itself is kept still, and the left and right movement of the heating block is realized by the sliding of the slide block 3. In the process of heating by adopting the second heating blocks 7 arranged in pairs, the heating temperature of the second heating blocks 7 can be fed back to the control device by the thermocouple wires in real time, and the control device can dynamically adjust based on the temperature feedback signals so as to keep the temperature stable.
In addition, in the second stage heating process, the temperature of the second heating block 7 can be rapidly reduced for the tensile test piece 10, at this time, a static tensile loading unit in the existing universal tensile machine is started, static tensile loading is carried out on the tensile test piece 10 to be tested by adopting displacement control, and loading of high-temperature tensile load can be completed; meanwhile, the high-temperature non-contact strain gauge is started, and the strain field of the tensile test piece 10 in the observation hole can be measured. After the stretching is completed, the data can be processed, the loading force data in the existing universal stretching machine is matched with the strain of the high-temperature high-speed DIC test, meanwhile, the strain field distribution at each moment can be analyzed through software to serve as a basis for judging the thinning failure, and the stress-strain curve of each sample and the strain state when the thinning failure occurs can be obtained through subsequent data processing.
In conclusion, the device for controlling the temperature of the aluminum alloy during heating quenching can be effectively applied to the complex temperature path process of the heat treatment of the wrought aluminum alloy, and can realize the environmental control of stable rapid heating, rapid cooling, dynamic heat preservation and the like of the wrought aluminum alloy. By adopting the device, the test piece can be stably transferred so as to be conveniently and efficiently subjected to subsequent tensile test, thereby effectively improving and improving the thermal processing performance, mechanical performance, finished product performance and plastic performance of the heat treatment of the wrought aluminum alloy in the fields of aerospace, automobile manufacturing and the like, and further providing technical support for subsequent tensile test.
It should be noted that the prior art in the protection scope of the present invention is not limited to the examples given in the present application, and all the prior art which is not inconsistent with the technical scheme of the present invention, including but not limited to the prior patent documents, the prior publications and the like, can be included in the protection scope of the present invention.
In addition, the combination of the features in the present application is not limited to the combination described in the claims of the present application or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradictory to each other occurs.
It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention.
Claims (10)
1. A device for controlling the temperature of aluminum alloy heating quenching is characterized by comprising:
the guide rail seat is provided with a guide rail;
a slider slidably coupled to the guide rail to slide along the guide rail in a first direction;
the box body is fixedly arranged on the sliding block;
the first heating blocks are arranged in pairs, and the second heating blocks are arranged in pairs and are arranged in the box body;
and the heating block driving element is connected with the first heating blocks and the second heating blocks so as to drive the two first heating blocks to be separated or relatively close to each other in the second direction and drive the two second heating blocks to be separated or relatively close to each other in the second direction, wherein the second direction is vertical to the first direction.
2. The apparatus for controlling temperature in aluminum alloy thermal quenching according to claim 1, wherein the heating block driving element comprises:
a panel;
one end of the sliding rod is connected with the panel, and the other end of the sliding rod penetrates through the box body to be connected with the first heating block or the second heating block;
and the elastic element is arranged between the panel and the box body so as to drive the two first heating blocks to be relatively close to each other in the second direction and drive the two second heating blocks to be relatively close to each other in the second direction under the condition that the external force is removed.
3. The apparatus for controlling temperature of aluminum alloy heating quenching according to claim 2, wherein each slide bar is sleeved with a corresponding flange, and the flanges are fixedly connected with the wall of the box body.
4. The apparatus for controlling temperature of aluminum alloy during thermal quenching according to claim 2, wherein the panel has a hollow portion.
5. The apparatus for controlling temperature in aluminum alloy thermal quenching according to claim 2, wherein each of the first heating block or the second heating block is connected to two corresponding sliding bars.
6. The apparatus for controlling temperature in aluminum alloy heating quenching according to claim 1, wherein the first heating block and the second heating block each comprise:
the heating block body is internally provided with a cavity;
the heating rod is arranged in the cavity;
and the thermocouple is arranged in the heating block body.
7. The apparatus for controlling temperature in aluminum alloy quench as recited in claim 6, further comprising:
an input heat source connected to the heating rod;
and the control device is respectively connected with the input heat source and the thermocouple, controls the heating temperatures of the first heating block and the second heating block, and receives a temperature feedback signal transmitted by the thermocouple.
8. The apparatus for controlling temperature of aluminum alloy heating quenching according to claim 7, wherein the control device controls the heating temperature of the first heating block to be higher than the heating temperature of the second heating block.
9. The apparatus for controlling temperature of aluminum alloy heating quenching according to claim 1, wherein the box body is provided with a racetrack-shaped hole.
10. The apparatus for controlling temperature in aluminum alloy heating quenching according to claim 1, wherein the first heating block and the second heating block are both copper blocks.
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| CN111855435A (en) * | 2020-08-10 | 2020-10-30 | 上海交通大学 | Aluminum alloy sheet testing system and method |
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| US6340444B1 (en) * | 1999-04-23 | 2002-01-22 | Fuji Photo Film Co., Ltd. | Heat treatment apparatus |
| WO2014068493A1 (en) * | 2012-10-31 | 2014-05-08 | Aisin Takaoka Co., Ltd. | Die-quenching method and apparatus of an aluminum alloy material |
| CN206970670U (en) * | 2017-08-09 | 2018-02-06 | 清远市东上钢业有限公司 | A kind of high-precision steel plate rolling after annealing device |
| CN111206193A (en) * | 2020-01-22 | 2020-05-29 | 湖南科技大学 | Low-speed hot forming-quenching composite forming method for aluminum alloy component |
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