CN113134532A - Experimental device for be used for preparing gradient quenching tissue sheet material - Google Patents
Experimental device for be used for preparing gradient quenching tissue sheet material Download PDFInfo
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- CN113134532A CN113134532A CN202010051765.3A CN202010051765A CN113134532A CN 113134532 A CN113134532 A CN 113134532A CN 202010051765 A CN202010051765 A CN 202010051765A CN 113134532 A CN113134532 A CN 113134532A
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- temperature control
- control module
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- pore channel
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- 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
Abstract
The invention discloses an experimental device for preparing a gradient quenching tissue plate, which comprises an upper template and a lower template corresponding to the upper template; the lower surface of the upper template is connected with an upper temperature control module, and an upper temperature control pore channel and an upper temperature measurement pore channel are formed in the upper temperature control module; the upper surface of the lower template is connected with a lower temperature control module, and the lower temperature control module is provided with a lower temperature control pore channel, a lower temperature measurement pore channel and a sheet material temperature measurement pore channel; a positioning block is connected to the side surface of the lower temperature control module; a material supporting block is arranged on the upper surface of the lower temperature control module; the lower surface of the upper temperature control module and the upper surface of the lower temperature control module are plate contact surfaces. The experimental device provided by the invention has complete functions, simple and reliable structure and convenience in operation, and is convenient for researching and customizing hot stamping process parameters.
Description
Technical Field
The invention relates to the technical field of sheet stamping forming, in particular to an experimental device for preparing a gradient quenching tissue sheet.
Background
In recent years, the concept of lightweight automobiles has been keenly and profoundly influenced by body manufacturing techniques, typically high-strength steel hot stamping techniques, the use of which has resulted in some typical high-strength parts, such as B-pillars, bumpers, door impact beams, and the like. A large number of collision tests have shown that the higher the overall strength of the part is, the better the collision resistance is, and on the contrary, matching the performance of different parts with the use requirements is more beneficial to fully developing the potential of the part, and the preparation of the part with gradient performance distribution requires a special hot stamping technology, namely, a customized hot stamping technology.
The customized hot stamping technology is currently a research hotspot in the industry and the academia, and can realize the gradient distribution of the performance of parts by using different thicknesses or tailor-welded plates through selective cooling (heating), local heat treatment after forming and the like, wherein the selective cooling (heating) technology has stronger operability and larger flexibility and obtains wide attention by controlling the temperature and the cooling rate of different parts of the plates in the forming process, so that different microstructures and corresponding mechanical properties are obtained. In the aspect of experimental research of customized hot stamping technology, an important problem is to simply obtain a plate material (or a characteristic part) with different gradient quenching tissues, and then evaluate the mechanical property of the plate material, so as to search and obtain the optimal process parameters, which can provide beneficial reference for the actual production process, so that the experimental device used is required to flexibly simulate different working conditions of the forming process, and simultaneously, the experimental device has a simple structure so as to be convenient to operate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an experimental device for preparing a gradient quenching tissue plate, and provides an experimental device which has complete functions, simple and reliable structure and convenient operation and is convenient for researching and customizing hot stamping process parameters.
In order to achieve the purpose, the invention adopts the following technical scheme:
an experimental device for preparing a gradient quenching tissue plate comprises an upper template and a lower template corresponding to the upper template;
the lower surface of the upper template is connected with an upper temperature control module, and an upper temperature control pore channel and an upper temperature measurement pore channel are formed in the upper temperature control module;
the upper surface of the lower template is connected with a lower temperature control module, and the lower temperature control module is provided with a lower temperature control pore channel, a lower temperature measurement pore channel and a sheet material temperature measurement pore channel;
a positioning block is connected to the side surface of the lower temperature control module;
a material supporting block is arranged on the upper surface of the lower temperature control module;
the lower surface of the upper temperature control module and the upper surface of the lower temperature control module are plate contact surfaces.
The upper temperature control module is an upper heating block and/or an upper cooling block.
The lower temperature control module is a lower heating block and/or a lower cooling block.
The diameters of the upper temperature control pore channel and the lower temperature control pore channel are both 8-12 mm, and the distance between the central point of the upper temperature control pore channel and the central point of the lower temperature control pore channel and the contact surface of the plate is 15-20 mm.
The upper temperature control pore channel and the lower temperature control pore channel are at least two, and the center distance of the pore channels is 30-50 mm.
The diameters of the upper temperature measuring pore channel and the lower temperature measuring pore channel are 3-5 mm, and the distance between the central point of the upper temperature measuring pore channel and the contact surface of the plate is 3-5 mm.
The sheet material temperature measurement pore is set as a taper hole or a step hole, and the diameter of the small end of the sheet material temperature measurement pore is 5-8 mm.
The upper template and the upper temperature control module and the lower template and the lower temperature control module are connected through fixing bolts.
The material supporting block is connected to the upper surface of the lower temperature control module through a supporting spring.
And heat insulation plates are arranged between the upper heating block and the upper cooling block and between the lower heating block and the lower cooling block.
The experimental device for preparing the gradient quenching tissue plate provided by the invention also has the following beneficial effects:
1) the experimental device can monitor and feed back the temperature of the temperature control module in real time by arranging the temperature measuring pore channel, each heating (cooling) block can be independently controlled, and meanwhile, the heating (cooling) blocks can be flexibly combined, so that various working conditions in the hot stamping process can be conveniently customized, and the exploration of a process window is facilitated;
2) according to the experimental device, the temperature measuring pore channel is arranged on the temperature control module, so that the temperature of the plate in the quenching process can be monitored in real time, and the change of the plate in the quenching process can be conveniently and comprehensively known;
3) the experimental device is provided with the material supporting block, so that the plate material can be prevented from being quenched violently due to temperature change in the die assembly process, and the structure is simple, reliable and effective;
4) the experimental device is provided with the positioning block, so that the plate can be quickly positioned when being transferred onto the experimental device, and the transfer time is effectively reduced.
Drawings
FIG. 1 is a schematic structural view of example 1 of an experimental apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of example 2 of the experimental apparatus of the present invention;
FIG. 3 is a schematic structural diagram of example 3 of the experimental apparatus of the present invention;
FIG. 4 is a schematic structural diagram of experimental apparatus example 4 of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment.
Referring to fig. 1, an embodiment 1 of an experimental apparatus for preparing a gradient quenched tissue plate provided by the present invention includes an upper template 1 and a lower template 2 corresponding to the upper template.
Preferably, the lower surface of the upper template 1 is connected with an upper heating block 4 and an upper cooling block 5 through a fixing bolt 3, and the upper heating block 4 and the upper cooling block 5 are both provided with an upper temperature control pore passage 6 and an upper temperature measurement pore passage 7.
Preferably, the upper surface of the lower template 2 is also connected with a lower heating block 8 and a lower cooling block 9 through fixing bolts, and the lower heating block 8 and the lower cooling block 9 are respectively provided with a lower temperature control pore channel 10, a lower temperature measurement pore channel 11 and a plate temperature measurement pore channel 12.
Preferably, gaps with the width t are separated between the upper heating block 4 and the upper cooling block 5, and between the lower heating block 8 and the lower cooling block 9, so as to avoid direct contact heat transfer, and a heat insulation plate 13 is arranged in the gaps to reduce heat transfer.
Preferably, the lower heating block 8 and the lower cooling block 9 are further provided with a material supporting block 14, and the material supporting block 14 is supported by a supporting spring 15. When the upper template 1 and the lower template 2 are not matched, the combination of the material supporting block 14 and the supporting spring 15 can ensure that the horizontal plane of the material supporting block 14 is slightly higher than the horizontal planes of the lower heating block 8 and the lower cooling block 9 by 1-3 mm, so that the plate 100 is prevented from directly contacting with the horizontal planes of the lower heating block 8 and the lower cooling block 9 when the upper template and the lower template are not matched, and the plate 100 is prevented from being quenched due to severe temperature change. When the die is closed, the combination of the material supporting block 14 and the supporting spring 15 can be completely pressed into the grooves at the corresponding parts of the lower heating block 8 and the lower cooling block 9, so that the plate 100 and the lower heating block 8 and the lower cooling block 9 are fully contacted and quenched.
Preferably, the side surfaces of the lower heating block 8 and the lower cooling block 9 are connected with a plurality of positioning blocks 17 through fixing bolts 16, so that the plate 100 can be positioned and placed quickly.
Preferably, the upper template 1 and the lower template 2 should be made of pressure-resistant and heat-insulating materials, such as heat-insulating boards (glass fiber and resin) specially used for molds.
Preferably, the upper heating block 4, the upper cooling block 5, the lower heating block 8, and the lower cooling block 9 should be made of hard high temperature resistant die steel, such as H13, CALDIE, etc.
Preferably, the heat insulation board 13 should be made of a material with good heat insulation performance, such as a heat insulation board (glass fiber + resin) for mold.
Preferably, the material of the plate 100 may be boron steel for hot stamping, aluminum alloy, or the like.
Preferably, the widths t of the gaps between the upper heating block 4 and the upper cooling block 5 and between the lower heating block 8 and the lower cooling block 9 can be determined according to actual requirements, so as to facilitate the insertion of the heat insulation plate 13.
Preferably, go up heating block 4 go up temperature control pore 6 with heating block 8 down put into heating element and heat in the temperature control pore 10 down, for guaranteeing heating heat preservation efficiency, the pore diameter is generally 8 ~ 12mm, the central point in pore with sheet material contact surface distance is generally 15 ~ 20mm, go up temperature control pore 6 down temperature control pore 10 all is equipped with two at least, and the centre-to-centre spacing in pore is 30 ~ 50mm, and pore quantity can be rationally confirmed according to the device size, and heating element can be resistance heating stick etc..
Preferably, flowing cooling media are introduced into the upper temperature control hole channel 6 of the upper cooling block 5 and the lower temperature control hole channel 10 of the lower cooling block 9 for cooling, in order to guarantee cooling efficiency, the diameter of the hole channels is generally 8-12 mm, the distance between the center point of the hole channels and the contact surface of the plate is generally 15-20 mm, at least two upper temperature control hole channels 6 and at least two lower temperature control hole channels 10 are arranged, the center distance of the hole channels is 30-50 mm, the number of the hole channels can be reasonably determined according to the size of the device, and the cooling media can be water and the like.
Preferably, the upper temperature measuring hole 7 and the lower temperature measuring hole 11 are used for placing a temperature measuring element so as to monitor the temperature of the module in real time, the diameter of the temperature measuring hole is 3-5 mm, the distance between the central point of the upper temperature measuring hole 7 and the central point of the lower temperature measuring hole 11 and the contact surface of the plate is 3-5 mm, the temperature measuring element feeds back the measured temperature to the controller so as to control the heating power or the cooling speed, the temperature of the module is controlled in real time, and the temperature measuring element can be a thermocouple and the like.
Preferably, the sheet material temperature measuring hole 12 is used for monitoring the temperature of the sheet material 100 in real time, the hole can be a tapered hole or a stepped hole, the diameter of the small end of the hole is 5-8 mm, and the measuring mode can be infrared temperature measurement and the like.
Referring to fig. 2, an embodiment 2 of an experimental apparatus for preparing a gradient quenched tissue plate provided by the present invention includes an upper template 1 and a lower template 2 corresponding to the upper template.
Preferably, the lower surface of the upper template 1 is connected with an upper heating block 4 and an upper cooling block 5 through a fixing bolt 3, and the upper heating block 4 and the upper cooling block 5 are both provided with an upper temperature control pore passage 6 and an upper temperature measurement pore passage 7.
Preferably, the upper surface of the lower template 2 is also connected with a lower heating block 8 and a lower cooling block 9 through fixing bolts, and the lower heating block 8 and the lower cooling block 9 are respectively provided with a lower temperature control pore channel 10, a lower temperature measurement pore channel 11 and a plate temperature measurement pore channel 12.
Preferably, a gap with a width t is formed between the upper heating block 4 and the upper cooling block 5, and between the lower heating block 8 and the lower cooling block 9, so as to avoid direct contact heat transfer.
Preferably, the lower heating block 8 and the lower cooling block 9 are further provided with a material supporting block 14, and the material supporting block 14 is supported by a supporting spring 15. When the upper template 1 and the lower template 2 are not matched, the combination of the material supporting block 14 and the supporting spring 15 can ensure that the horizontal plane of the material supporting block 14 is slightly higher than the horizontal planes of the lower heating block 8 and the lower cooling block 9 by 1-3 mm, so that the plate 100 is prevented from directly contacting with the horizontal planes of the lower heating block 8 and the lower cooling block 9 when the upper template and the lower template are not matched, and the plate 100 is prevented from being quenched due to severe temperature change. When the die is closed, the combination of the material supporting block 14 and the supporting spring 15 can be completely pressed into the grooves at the corresponding parts of the lower heating block 8 and the lower cooling block 9, so that the plate 100 and the lower heating block 8 and the lower cooling block 9 are fully contacted and quenched.
Preferably, the side surfaces of the lower heating block 8 and the lower cooling block 9 are connected with a plurality of positioning blocks 17 through fixing bolts 16, so that the plate 100 can be positioned and placed quickly.
Preferably, the upper template 1 and the lower template 2 should be made of pressure-resistant and heat-insulating materials, such as heat-insulating boards (glass fiber and resin) specially used for molds.
Preferably, the upper heating block 4, the upper cooling block 5, the lower heating block 8, and the lower cooling block 9 should be made of hard high temperature resistant die steel, such as H13, CALDIE, etc.
Preferably, the heat insulation board 13 should be made of a material with good heat insulation performance, such as a heat insulation board (glass fiber + resin) for mold.
Preferably, the material of the plate 100 may be boron steel for hot stamping, aluminum alloy, or the like.
Preferably, the gap widths t of the upper heating block 4 and the upper cooling block 5 and the lower heating block 8 and the lower cooling block 9 can be determined according to actual requirements.
Preferably, go up heating block 4 go up temperature control pore 6 with heating block 8 down put into heating element and heat in the temperature control pore 10 down, for guaranteeing heating heat preservation efficiency, the pore diameter is generally 8 ~ 12mm, the central point in pore with sheet material contact surface distance is generally 15 ~ 20mm, go up temperature control pore 6 down temperature control pore 10 all is equipped with two at least, and the centre-to-centre spacing in pore is 30 ~ 50mm, and pore quantity can be rationally confirmed according to the device size, and heating element can be resistance heating stick etc..
Preferably, flowing cooling media are introduced into the upper temperature control hole channel 6 of the upper cooling block 5 and the lower temperature control hole channel 10 of the lower cooling block 9 for cooling, in order to guarantee cooling efficiency, the diameter of the hole channels is generally 8-12 mm, the distance between the center point of the hole channels and the contact surface of the plate is generally 15-20 mm, at least two upper temperature control hole channels 6 and at least two lower temperature control hole channels 10 are arranged, the center distance of the hole channels is 30-50 mm, the number of the hole channels can be reasonably determined according to the size of the device, and the cooling media can be water and the like.
Preferably, the upper temperature measuring hole 7 and the lower temperature measuring hole 11 are used for placing a temperature measuring element so as to monitor the temperature of the module in real time, the diameter of the temperature measuring hole is 3-5 mm, the distance between the central point of the upper temperature measuring hole 7 and the central point of the lower temperature measuring hole 11 and the contact surface of the plate is 3-5 mm, the temperature measuring element feeds back the measured temperature to the controller so as to control the heating power or the cooling speed, the temperature of the module is controlled in real time, and the temperature measuring element can be a thermocouple and the like.
Preferably, the sheet material temperature measuring hole 12 is used for monitoring the temperature of the sheet material 100 in real time, the hole can be a tapered hole or a stepped hole, the diameter of the small end of the hole is 5-8 mm, and the measuring mode can be infrared temperature measurement and the like.
Example 2 is different from example 1 in that the insulating board 13 is removed from example 2, and the present invention is applied to a case where the requirement for controlling the temperature gradient between the heating block and the cooling block is not strict. So set up, can simplify the device structure, convenient operation.
Referring to fig. 3, an embodiment 3 of an experimental apparatus for preparing a gradient quenched tissue plate provided by the present invention includes an upper template 1 and a lower template 2 corresponding to the upper template.
Preferably, the lower surface of the upper template 1 is connected with two upper heating blocks 4 through fixing bolts 3, and the upper heating blocks 4 are provided with an upper temperature control pore passage 6 and an upper temperature measurement pore passage 7.
Preferably, the upper surface of the lower template 2 is also connected with two lower heating blocks 8 through fixing bolts, and the lower heating blocks 8 are provided with a lower temperature control pore channel 10, a lower temperature measurement pore channel 11 and a plate temperature measurement pore channel 12.
Preferably, a gap with a width t is formed between the two upper heating blocks 4 and between the two lower heating blocks 8, so as to avoid direct contact heat transfer, and a heat insulation plate 13 is arranged in the gap to reduce radiation heat transfer.
Preferably, the lower heating block 8 is further provided with a supporting block 14, and the supporting block 14 is supported by a supporting spring 15. When the upper template 1 and the lower template 2 are not matched, the combination of the material supporting block 14 and the supporting spring 15 can ensure that the horizontal plane of the material supporting block 14 is slightly higher than the horizontal plane of the lower heating block 8 by 1-3 mm, so that the plate 100 is prevented from directly contacting with the horizontal plane of the lower heating block 8 when the upper template and the lower template are not matched, and the plate 100 is prevented from being quenched due to severe temperature change. When the die is closed, the combination of the material supporting block 14 and the supporting spring 15 can be completely pressed into the groove at the corresponding part of the lower heating block 8, so that the plate material 100 and the lower heating block 8 are fully contacted and quenched.
Preferably, the side surface of the lower heating block 8 is connected with a plurality of positioning blocks 17 through fixing bolts 16, so that the plate 100 can be positioned and placed quickly.
Preferably, the upper template 1 and the lower template 2 should be made of pressure-resistant and heat-insulating materials, such as heat-insulating boards (glass fiber and resin) specially used for molds.
Preferably, the upper heating block 4 and the lower heating block 8 should be made of hard high temperature resistant die steel, such as H13, CALDIE, etc.
Preferably, the heat insulation board 13 should be made of a material with good heat insulation performance, such as a heat insulation board (glass fiber + resin) for mold.
Preferably, the material of the plate 100 may be boron steel for hot stamping, aluminum alloy, or the like.
Preferably, the gap width t between the two upper heating blocks 4 and the gap width t between the two lower heating blocks 8 can be determined according to actual requirements, so as to facilitate the insertion of the thermal insulation board 13.
Preferably, go up heating block 4 go up temperature control pore 6 with heating block 8 down put into heating element and heat in the temperature control pore 10 down, for guaranteeing heating heat preservation efficiency, the pore diameter is generally 8 ~ 12mm, the central point in pore with sheet material contact surface distance is generally 15 ~ 20mm, go up temperature control pore 6 down temperature control pore 10 all is equipped with two at least, and the centre-to-centre spacing in pore is 30 ~ 50mm, and pore quantity can be rationally confirmed according to the device size, and heating element can be resistance heating stick etc..
Preferably, the heating temperatures of the two upper heating blocks 4 are different and determined as required, and the temperatures of the two lower heating blocks 8 should be the same as the temperatures of the two upper heating blocks 4 matched with the two lower heating blocks.
Preferably, the upper temperature measuring hole 7 and the lower temperature measuring hole 11 are used for placing a temperature measuring element so as to monitor the temperature of the module in real time, the diameter of the temperature measuring hole is 3-5 mm, the distance between the central point of the upper temperature measuring hole 7 and the central point of the lower temperature measuring hole 11 and the contact surface of the plate is 3-5 mm, the temperature measuring element feeds back the measured temperature to the controller so as to control the heating power or the cooling speed, the temperature of the module is controlled in real time, and the temperature measuring element can be a thermocouple and the like.
Preferably, the sheet material temperature measuring hole 12 is used for monitoring the temperature of the sheet material 100 in real time, the hole can be a tapered hole or a stepped hole, the diameter of the small end of the hole is 5-8 mm, and the measuring mode can be infrared temperature measurement and the like.
Referring to fig. 4, an embodiment 4 of an experimental apparatus for preparing a gradient quenched tissue plate provided by the present invention includes an upper template 1 and a lower template 2 corresponding to the upper template.
Preferably, the lower surface of the upper template 1 is connected with two upper heating blocks 4 through fixing bolts 3, and the upper heating blocks 4 are provided with an upper temperature control pore passage 6 and an upper temperature measurement pore passage 7.
Preferably, the upper surface of the lower template 2 is also connected with two lower heating blocks 8 through fixing bolts, and the lower heating blocks 8 are provided with a lower temperature control pore channel 10, a lower temperature measurement pore channel 11 and a plate temperature measurement pore channel 12.
Preferably, a gap with the width t is arranged between the two upper heating blocks 4 and between the two lower heating blocks 8, so that direct contact heat transfer is avoided.
Preferably, the lower heating block 8 is further provided with a supporting block 14, and the supporting block 14 is supported by a supporting spring 15. When the upper template 1 and the lower template 2 are not matched, the combination of the material supporting block 14 and the supporting spring 15 can ensure that the horizontal plane of the material supporting block 14 is slightly higher than the horizontal plane of the lower heating block 8 by 1-3 mm, so that the plate 100 is prevented from directly contacting with the horizontal plane of the lower heating block 8 when the upper template and the lower template are not matched, and the plate 100 is prevented from being quenched due to severe temperature change. When the die is closed, the combination of the material supporting block 14 and the supporting spring 15 can be completely pressed into the groove at the corresponding part of the lower heating block 8, so that the plate material 100 and the lower heating block 8 are fully contacted and quenched.
Preferably, the side surface of the lower heating block 8 is connected with a plurality of positioning blocks 17 through fixing bolts 16, so that the plate 100 can be positioned and placed quickly.
Preferably, the upper template 1 and the lower template 2 should be made of pressure-resistant and heat-insulating materials, such as heat-insulating boards (glass fiber and resin) specially used for molds.
Preferably, the upper heating block 4 and the lower heating block 8 should be made of hard high temperature resistant die steel, such as H13, CALDIE, etc.
Preferably, the material of the plate 100 may be boron steel for hot stamping, aluminum alloy, or the like.
Preferably, the gap width t between the two upper heating blocks 4 and the gap width t between the two lower heating blocks 8 can be determined according to actual requirements.
Preferably, go up heating block 4 go up temperature control pore 6 with heating block 8 down put into heating element and heat in the temperature control pore 10 down, for guaranteeing heating heat preservation efficiency, the pore diameter is generally 8 ~ 12mm, the central point in pore with sheet material contact surface distance is generally 15 ~ 20mm, go up temperature control pore 6 down temperature control pore 10 all is equipped with two at least, and the centre-to-centre spacing in pore is 30 ~ 50mm, and pore quantity can be rationally confirmed according to the device size, and heating element can be resistance heating stick etc..
Preferably, the heating temperatures of the two upper heating blocks 4 are different and determined as required, and the temperatures of the two lower heating blocks 8 should be the same as the temperatures of the two upper heating blocks 4 matched with the two lower heating blocks.
Preferably, the upper temperature measuring hole 7 and the lower temperature measuring hole 11 are used for placing a temperature measuring element so as to monitor the temperature of the module in real time, the diameter of the temperature measuring hole is 3-5 mm, the distance between the central point of the upper temperature measuring hole 7 and the central point of the lower temperature measuring hole 11 and the contact surface of the plate is 3-5 mm, the temperature measuring element feeds back the measured temperature to the controller so as to control the heating power or the cooling speed, the temperature of the module is controlled in real time, and the temperature measuring element can be a thermocouple and the like.
Preferably, the sheet material temperature measuring hole 12 is used for monitoring the temperature of the sheet material 100 in real time, the hole can be a tapered hole or a stepped hole, the diameter of the small end of the hole is 5-8 mm, and the measuring mode can be infrared temperature measurement and the like.
Example 4 is different from example 3 in that example 4 is applied to a case where the requirement for controlling the temperature gradient between the heating block and the cooling block is not strict, except that the heat insulating plate 13 is removed. So set up, can simplify the device structure, convenient operation.
The working process of the experimental device is as follows:
1) preparing equipment: heating (cooling) the heating (cooling) block according to the temperature gradient of the actual demand, monitoring the temperature of the heating (cooling) block in real time in the heating (cooling) process, performing feedback control, and preserving the heat for 20-40 minutes for later use after the temperature reaches the specified temperature;
2) preparing a plate material: putting the plate 100 into a heating furnace for heating and heat preservation (the heating temperature and the heat preservation time are determined according to the used materials and requirements);
3) transferring the plate material: taking the heated and heat-preserved plate 100 out of the heating furnace, and quickly transferring the plate 100 to a device under the positioning of the positioning block 18, wherein the plate 100 is not directly contacted with the lower heating (cooling) block but directly contacted with the supporting material block 14 on the plate;
4) and (3) die assembly pressure maintaining quenching: rapidly closing the die after the plate 100 is transferred, keeping a certain die closing pressure and quenching time, quenching the plate 100 in the device, and monitoring and recording the temperature change of the plate 100 in real time through the plate temperature measuring hole 12;
5) taking out the plate material and cooling: and opening the die after quenching to take out the plate 100, standing and cooling.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. An experimental device for preparing a gradient quenching tissue plate is characterized in that: comprises an upper template and a lower template corresponding to the upper template;
the lower surface of the upper template is connected with an upper temperature control module, and an upper temperature control pore channel and an upper temperature measurement pore channel are formed in the upper temperature control module;
the upper surface of the lower template is connected with a lower temperature control module, and the lower temperature control module is provided with a lower temperature control pore channel, a lower temperature measurement pore channel and a sheet material temperature measurement pore channel;
a positioning block is connected to the side surface of the lower temperature control module;
a material supporting block is arranged on the upper surface of the lower temperature control module;
the lower surface of the upper temperature control module and the upper surface of the lower temperature control module are plate contact surfaces.
2. The experimental facility for preparing a gradient quenched tissue plate according to claim 1, characterized in that: the upper temperature control module is an upper heating block and/or an upper cooling block.
3. The experimental facility for preparing a gradient quenched tissue plate according to claim 1, characterized in that: the lower temperature control module is a lower heating block and/or a lower cooling block.
4. The experimental facility for preparing a gradient quenched tissue plate according to claim 1, characterized in that: the diameters of the upper temperature control pore channel and the lower temperature control pore channel are both 8-12 mm, and the distance between the central point of the upper temperature control pore channel and the central point of the lower temperature control pore channel and the contact surface of the plate is 15-20 mm.
5. The experimental facility for preparing a gradient quenched tissue plate according to claim 4, characterized in that: the upper temperature control pore channel and the lower temperature control pore channel are at least two, and the center distance of the pore channels is 30-50 mm.
6. The experimental facility for preparing a gradient quenched tissue plate according to claim 1, characterized in that: the diameters of the upper temperature measuring pore channel and the lower temperature measuring pore channel are 3-5 mm, and the distance between the central point of the upper temperature measuring pore channel and the contact surface of the plate is 3-5 mm.
7. The experimental facility for preparing a gradient quenched tissue plate according to claim 1, characterized in that: the sheet material temperature measurement pore is set as a taper hole or a step hole, and the diameter of the small end of the sheet material temperature measurement pore is 5-8 mm.
8. The experimental facility for preparing a gradient quenched tissue plate according to claim 1, characterized in that: the upper template and the upper temperature control module and the lower template and the lower temperature control module are connected through fixing bolts.
9. The experimental facility for preparing a gradient quenched tissue plate according to claim 1, characterized in that: the material supporting block is connected to the upper surface of the lower temperature control module through a supporting spring.
10. The experimental set-up for the preparation of gradient quenched tissue slabs according to any of claims 2 or 3, characterized in that: and heat insulation plates are arranged between the upper heating block and the upper cooling block and between the lower heating block and the lower cooling block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051765.3A CN113134532A (en) | 2020-01-17 | 2020-01-17 | Experimental device for be used for preparing gradient quenching tissue sheet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051765.3A CN113134532A (en) | 2020-01-17 | 2020-01-17 | Experimental device for be used for preparing gradient quenching tissue sheet material |
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| Publication Number | Publication Date |
|---|---|
| CN113134532A true CN113134532A (en) | 2021-07-20 |
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|---|---|---|---|
| CN202010051765.3A Pending CN113134532A (en) | 2020-01-17 | 2020-01-17 | Experimental device for be used for preparing gradient quenching tissue sheet material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114101444A (en) * | 2021-11-25 | 2022-03-01 | 重庆百能达普什汽车零部件有限责任公司 | Automobile rear longitudinal beam variable-strength hot stamping device and production process |
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Application publication date: 20210720 |