CN115287421A - Local heat treatment device and method for large aluminum alloy die-casting component - Google Patents
Local heat treatment device and method for large aluminum alloy die-casting component Download PDFInfo
- Publication number
- CN115287421A CN115287421A CN202210800504.6A CN202210800504A CN115287421A CN 115287421 A CN115287421 A CN 115287421A CN 202210800504 A CN202210800504 A CN 202210800504A CN 115287421 A CN115287421 A CN 115287421A
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- heat treatment
- heater
- driver
- extrusion
- bracket
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 67
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004512 die casting Methods 0.000 title claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 34
- 230000006698 induction Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000007493 shaping process Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- C21D1/34—Methods of heating
-
- 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
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a local heat treatment device and a local heat treatment method for a large aluminum alloy die-casting component, and the local heat treatment device comprises a controller, a bracket and a bracket adjusting device for driving the bracket to move, wherein a heat treatment cavity is arranged on the bracket; a heater is arranged on one side of the heat treatment cavity, and an extrusion device is arranged on the other side of the heat treatment cavity opposite to the heater; the extruding device comprises an extruding head close to the heater, one end of the extruding head far away from the heater is provided with an extruding driver, and the extruding driver is fixed on the support; the support adjusting device comprises a connecting rod connected with the support, and one end of the connecting rod is provided with a support driver for driving the connecting rod to move; and a temperature sensor is arranged on one side of the heater. The invention has simple structure and easy operation, can realize high-speed local heat treatment and has the advantage of high production efficiency; the extrusion head is used for pressurizing, so that the tissue of an extrusion area is compact, and the mechanical property is improved.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a local heat treatment device and method for a large aluminum alloy die-casting component.
Background
The dead weight of an automobile has great influence on energy consumption, components such as a new energy automobile longitudinal beam and the like are generally manufactured by adopting aluminum alloy die castings in order to reduce the energy consumption, the components have the characteristics of large size, thin wall thickness and the like, T6/T7 heat treatment is generally needed in order to improve the performance of the components, integral deformation occurs in the T6/T7 heat treatment, shaping treatment needs to be carried out after the T6/T7 heat treatment, and a large amount of time, heat energy and manpower are consumed for the heat treatment and the subsequent shaping.
Therefore, it is necessary to design a local heat treatment device for large aluminum alloy die-cast components, which can improve the heat treatment efficiency while ensuring the performance of the components.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical scheme adopted by the invention is as follows:
a local heat treatment device of large-scale aluminum alloy die-casting component which is characterized in that: the device comprises a controller, a bracket (10) and a bracket adjusting device (20) for driving the bracket (10) to move, wherein a heat treatment cavity (11) is arranged on the bracket (10); a heater (30) is arranged on one side of the heat treatment cavity (11), and an extrusion device (40) is arranged on the other side of the heat treatment cavity (11) opposite to the heater (30);
the extruding device (40) comprises an extruding head (42) close to the heater (30), one end, far away from the heater (30), of the extruding head (42) is provided with an extruding driver (41), and the extruding driver (41) is fixed on the support (10);
the support adjusting device (20) comprises a connecting rod (22) connected with the support (10), and one end of the connecting rod (22) is provided with a support driver (21) for driving the connecting rod (22) to move;
a temperature sensor (60) is arranged on one side of the heater (30);
the temperature sensor (60), the extrusion driver (41), the heater (30) and the support driver (21) are respectively in signal connection with the controller.
Preferably, the bracket (10) and the connecting rod (22) are connected by adopting a thread pair.
Preferably, the support drive (21) is a motor.
Preferably, the pressing actuator (41) is an oil hydraulic cylinder.
Preferably, the heater (30) is a high frequency induction heater.
Preferably, an air faucet (50) is arranged on one side of the extrusion device (40), a stop valve is arranged on the air faucet (50), and the stop valve is in signal connection with the controller.
A local heat treatment method for a large aluminum alloy die-cast member comprises the following steps:
s1, inserting a region to be heat-treated of the workpiece into a heat treatment cavity (11);
s2, the support driver (21) drives the support (10) to enable the area of the workpiece to be thermally treated to be close to the heater (30);
s3, heating the region of the workpiece to be heat treated to 450-500 ℃ by a heater (30), and keeping the temperature for 0.5-10 minutes;
s4, the extrusion driver (41) drives the extrusion head (42) to extrude the region of the workpiece to be subjected to heat treatment, the extrusion pressure is 10-20 MPa, and the pressure holding time is 0.5-10 minutes;
s5, the extrusion driver (41) drives the extrusion head (42) to be far away from the workpiece;
and s6, blowing air through an air nozzle (50) to cool the heat treatment area of the workpiece, and taking out the workpiece.
Compared with the prior art, the invention has the beneficial effects that:
1. the device has the advantages of simple structure, easy operation, small occupied area and low manufacturing cost, and is convenient to popularize and use;
2. the high-speed local heat treatment can be realized, and the cooling is rapid, so that the production efficiency is high;
3. through the pressurization effect of the extrusion head, the tissue of the extrusion area is more compact, and the mechanical property is improved.
Drawings
FIG. 1 is a schematic view of an overall structure of a local heat treatment apparatus for a large aluminum alloy die-cast member;
FIG. 2 is a gold phase diagram of an AlSi10MnMg die cast component before heat treatment;
FIG. 3 is a gold phase diagram of the AlSi10MnMg die cast member after heat treatment.
Wherein: the device comprises a support 10, a heat treatment chamber 11, a support adjusting device 20, a support driver 21, a connecting rod 22, a heater 30, a squeezing device 40, a squeezing driver 41, a squeezing head 42, an air nozzle 50 and a temperature sensor 60.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention is further described with reference to the following drawings and detailed description:
as shown in fig. 1, the local heat treatment device for the large aluminum alloy die-cast member comprises a controller, a support 10 and a support adjusting device 20 for driving the support 10 to move, wherein a heat treatment cavity 11 is arranged on the support 10; a heater 30 is arranged on one side of the heat treatment cavity 11, and an extrusion device 40 is arranged on the other side of the heat treatment cavity 11 opposite to the heater 30;
the extrusion device 40 comprises an extrusion head 42 close to the heater 30, one end of the extrusion head 42 far away from the heater 30 is provided with an extrusion driver 41, and the extrusion driver 41 is fixed on the bracket 10;
the bracket adjusting device 20 comprises a connecting rod 22 connected with the bracket 10, and one end of the connecting rod 22 is provided with a bracket driver 21 for driving the connecting rod 22 to move;
a temperature sensor 60 is arranged at one side of the heater 30;
the temperature sensor 60, the extrusion driver 41, the heater 30 and the support driver 21 are respectively in signal connection with the controller.
Further, the bracket 10 and the connecting rod 22 are connected by a thread pair. The threaded pair connection has the advantages of simple structure, convenience in maintenance and accuracy in control.
Further, the carriage driver 21 is a motor.
Further, the pressing actuator 41 is an oil hydraulic cylinder. The oil hydraulic cylinder has the advantages of simple structure and stable performance.
Further, the heater 30 is a high frequency induction heater. The high-frequency induction heater has the advantages of high heating speed and compact structure.
Further, an air tap 50 is arranged on one side of the extruding device 40, and a stop valve is arranged on the air tap 50 and is in signal connection with the controller.
The following description will be given of a heat treatment method of a large-sized new energy automobile stringer die casting (hereinafter referred to as a "workpiece") made of AlSi10MnMg, in which the elongation of the "workpiece" is 3 to 6% in an as-cast state without heat treatment and is not less than 10% after the T6/T7 heat treatment. Due to the low elongation, the longitudinal beam is subjected to SPR riveting (a cold connection process of self-piercing riveting) under the condition of no heat treatment, and a riveted circular truncated cone can generate riveting point cracking, so that potential safety risk is realized, and the use standard is not met.
Before the method is adopted, in order to enable the riveting point to reach the elongation rate required by SPR riveting, integral T6/T7 heat treatment needs to be carried out on the workpiece so as to improve the mechanical property and the corrosion resistance of a casting, and improve the properties of SPR riveting, welding and the like. The T6/T7 heat treatment process includes a solution time and an aging time, and the T6/T7 heat treatment of the 'workpiece' takes about 6 hours in total. In addition, the T6/T7 heat treatment causes deformation of the entire structure, and the T6/T7 heat treatment must be followed by shaping, which requires a lot of time, heat and labor for heat treatment and subsequent shaping.
After the local heat treatment device for the large aluminum alloy die-cast member is adopted, the heat treatment method and the steps are as follows:
s1, inserting a region of a workpiece to be heat-treated into a heat treatment cavity 11;
s2, the support driver 21 drives the support 10 to enable the area of the workpiece to be thermally treated to be close to the heater 30;
s3, heating the region to be heat-treated of the workpiece to 450-500 ℃ by the heater 30, and keeping the temperature for 0.5-10 minutes;
s4, the extrusion driver 41 drives the extrusion head 42 to extrude the region of the workpiece to be thermally treated, the extrusion pressure is 10-20 MPa, and the pressure holding time is 0.5-10 minutes;
s5, the extrusion driver 41 drives the extrusion head 42 away from the workpiece;
and s6, blowing air through the air nozzle 50 to cool the heat treatment area of the workpiece, and taking out the workpiece.
According to the type of the aluminum alloy material and the size of the structure of the area to be heat treated, the heating temperature, the heat preservation time, the extrusion pressure and the pressure holding time can be adaptively adjusted.
After the device and the method are adopted, the workpiece does not need integral heat treatment, and only the local SPR riveting connection area is subjected to heating treatment and pressurization treatment, so that the grain refinement quality of the internal structure of the heat treatment part of the workpiece (shown in figures 2 and 3) can be improved, the riveting requirement that the elongation is more than or equal to 10 percent is met, and the qualified SPR riveting connection is ensured. Compared with the whole T6/T7 heat treatment, the method can reduce the working hours by more than 75 percent, and simultaneously reduce the investment of the fixed equipment of the heat treatment production line and the production cost.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the protective scope of the present patent claims.
Claims (7)
1. A local heat treatment device of large-scale aluminum alloy die-casting component which is characterized in that: the device comprises a controller, a bracket (10) and a bracket adjusting device (20) for driving the bracket (10) to move, wherein a heat treatment cavity (11) is arranged on the bracket (10); a heater (30) is arranged on one side of the heat treatment cavity (11), and an extrusion device (40) is arranged on the other side of the heat treatment cavity (11) opposite to the heater (30);
the extruding device (40) comprises an extruding head (42) close to the heater (30), one end, far away from the heater (30), of the extruding head (42) is provided with an extruding driver (41), and the extruding driver (41) is fixed on the support (10);
the support adjusting device (20) comprises a connecting rod (22) connected with the support (10), and one end of the connecting rod (22) is provided with a support driver (21) for driving the connecting rod (22) to move;
a temperature sensor (60) is arranged on one side of the heater (30);
the temperature sensor (60), the extrusion driver (41), the heater (30) and the support driver (21) are respectively in signal connection with the controller.
2. The apparatus for localized heat treatment of a large aluminum alloy die-cast member as recited in claim 1, wherein: the bracket (10) and the connecting rod (22) are connected by a thread pair.
3. The apparatus for localized heat treatment of a large aluminum alloy die-cast member as recited in claim 1, wherein: the carriage driver (21) is a motor.
4. The apparatus for locally heat-treating a large aluminum alloy die-cast member as recited in claim 1, wherein: the extrusion actuator (41) is an oil hydraulic cylinder.
5. The apparatus for locally heat-treating a large aluminum alloy die-cast member as recited in claim 1, wherein: the heater (30) is a high frequency induction heater.
6. The apparatus for localized heat treatment of a large aluminum alloy die-cast member as recited in claim 1, wherein: an air nozzle (50) is arranged on one side of the extruding device (40), a stop valve is arranged on the air nozzle (50), and the stop valve is in signal connection with the controller.
7. The apparatus for locally heat-treating a large aluminum alloy die-cast member as recited in any one of claims 1 to 6, wherein:
the using method comprises the following steps:
s1, inserting a region to be heat-treated of the workpiece into a heat treatment cavity (11);
s2, driving the bracket (10) by a bracket driver (21) to enable the area of the workpiece to be thermally treated to be close to the heater (30);
s3, heating the region to be heat-treated of the workpiece to 450-500 ℃ by a heater (30), and keeping the temperature for 0.5-10 minutes;
s4, driving an extrusion head (42) to extrude the area to be heat-treated of the workpiece by an extrusion driver (41), wherein the extrusion pressure is 10-20 MPa, and the pressure holding time is 0.5-10 minutes;
s5, the extrusion driver (41) drives the extrusion head (42) to be far away from the workpiece;
and s6, blowing air through an air nozzle (50) to cool the heat treatment area of the workpiece, and taking out the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210800504.6A CN115287421B (en) | 2022-07-06 | Local heat treatment device and method for large aluminum alloy die-casting component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210800504.6A CN115287421B (en) | 2022-07-06 | Local heat treatment device and method for large aluminum alloy die-casting component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115287421A true CN115287421A (en) | 2022-11-04 |
| CN115287421B CN115287421B (en) | 2024-06-25 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1472909A (en) * | 1959-03-17 | 1967-03-17 | Reynolds Metals Co | Method and apparatus for the extrusion with heat treatment of aluminum alloy parts |
| RU2007145860A (en) * | 2007-12-10 | 2009-06-20 | ЗАО "Барнаульский патронный завод" (RU) | DEVICE FOR THERMAL PROCESSING OF PRODUCTS |
| CN205501357U (en) * | 2016-04-07 | 2016-08-24 | 安徽生信铝业股份有限公司 | Quenching fan cooler of aluminum alloy extrusion type material |
| CN106435141A (en) * | 2016-12-06 | 2017-02-22 | 东北大学 | Cooling device and method capable of preventing heat treatment sheet material from deformation |
| CN207831925U (en) * | 2018-01-21 | 2018-09-07 | 青岛精诚华旗微电子设备有限公司 | A kind of removable location heating system on vacuum heat treatment furnace |
| CN208815087U (en) * | 2018-10-09 | 2019-05-03 | 湖南艾科威智能装备有限公司 | A kind of rapid cooling mechanism for tubular annealing furnace |
| CN210632674U (en) * | 2019-08-20 | 2020-05-29 | 湖北亮达铝业科技有限公司 | Quick aluminium alloy extrusion device |
| CN112342348A (en) * | 2020-11-05 | 2021-02-09 | 马鞍山威泰机电有限公司 | Local precision heat treatment equipment for superfine parts |
| CN112845647A (en) * | 2021-02-01 | 2021-05-28 | 安徽广银铝业有限公司 | Quenching device for aluminum profile extrusion material port |
| CN216141598U (en) * | 2021-06-02 | 2022-03-29 | 江西省耀扬铝业有限公司 | Heat treatment device for aluminum profile production |
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1472909A (en) * | 1959-03-17 | 1967-03-17 | Reynolds Metals Co | Method and apparatus for the extrusion with heat treatment of aluminum alloy parts |
| RU2007145860A (en) * | 2007-12-10 | 2009-06-20 | ЗАО "Барнаульский патронный завод" (RU) | DEVICE FOR THERMAL PROCESSING OF PRODUCTS |
| CN205501357U (en) * | 2016-04-07 | 2016-08-24 | 安徽生信铝业股份有限公司 | Quenching fan cooler of aluminum alloy extrusion type material |
| CN106435141A (en) * | 2016-12-06 | 2017-02-22 | 东北大学 | Cooling device and method capable of preventing heat treatment sheet material from deformation |
| CN207831925U (en) * | 2018-01-21 | 2018-09-07 | 青岛精诚华旗微电子设备有限公司 | A kind of removable location heating system on vacuum heat treatment furnace |
| CN208815087U (en) * | 2018-10-09 | 2019-05-03 | 湖南艾科威智能装备有限公司 | A kind of rapid cooling mechanism for tubular annealing furnace |
| CN210632674U (en) * | 2019-08-20 | 2020-05-29 | 湖北亮达铝业科技有限公司 | Quick aluminium alloy extrusion device |
| CN112342348A (en) * | 2020-11-05 | 2021-02-09 | 马鞍山威泰机电有限公司 | Local precision heat treatment equipment for superfine parts |
| CN112845647A (en) * | 2021-02-01 | 2021-05-28 | 安徽广银铝业有限公司 | Quenching device for aluminum profile extrusion material port |
| CN216141598U (en) * | 2021-06-02 | 2022-03-29 | 江西省耀扬铝业有限公司 | Heat treatment device for aluminum profile production |
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