CN110423963B - Heat treatment process and heat treatment equipment for lightweight aluminum alloy engine support - Google Patents
Heat treatment process and heat treatment equipment for lightweight aluminum alloy engine support Download PDFInfo
- Publication number
- CN110423963B CN110423963B CN201910811482.1A CN201910811482A CN110423963B CN 110423963 B CN110423963 B CN 110423963B CN 201910811482 A CN201910811482 A CN 201910811482A CN 110423963 B CN110423963 B CN 110423963B
- Authority
- CN
- China
- Prior art keywords
- treatment
- quenching
- temperature
- heat treatment
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- 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
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a heat treatment process and heat treatment equipment for a light aluminum alloy engine support, wherein the heat treatment process comprises the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out.
Description
Technical Field
The invention relates to the technical field of aluminum alloy materials and heat treatment thereof, in particular to a heat treatment process and heat treatment equipment for a light aluminum alloy engine bracket.
Background
Aluminum alloys are the most widely used class of non-ferrous structural materials in industry and have found a number of applications in the aerospace, automotive, mechanical manufacturing, marine and chemical industries. With the rapid development of industrial economy, the demand on aluminum alloy welded structural parts is increasing day by day, so that the weldability research of aluminum alloy is also deepened, and the aluminum alloy is the most applied alloy at present.
The 6000 series aluminum alloy has the characteristics of medium strength, low density, good formability and weldability and the like, and is widely applied to the industries of automobile manufacturing, aerospace, rail transit and the like. However, cast aluminum alloys have a complicated structural configuration such as a non-uniform wall thickness, a irregular surface, an inner channel, and the like, and are likely to cause non-uniform heat treatment, thereby causing deformation or cracking, as compared with wrought aluminum alloys. Further, since the 6000 series aluminum alloy has a relatively low alloying degree, the amount of the second phase particles formed is relatively small even after the peak aging treatment, and the contribution of the precipitation strengthening effect is relatively limited, and at present, the strength of the alloy is generally lower than 450 MPa. In this regard, further research is needed to improve the heat treatment process of aluminum alloys to meet the increasing demands. In addition, current aluminum alloy heat treatment facility mostly is independent setting, need constantly shift the work piece and roll the wheel to the wheel between each equipment, not only wastes time and energy, and the operation is inconvenient, very easily causes the influence to the metallographic structure of work piece moreover, is unfavorable for the quality of heat treatment end product to the accuse.
Disclosure of Invention
Aiming at the existing problems, the invention provides a heat treatment process and heat treatment equipment for a light aluminum alloy engine support, which are characterized in that the heat treatment process of the aluminum alloy is reasonably optimized, the solution heat treatment and the aging heat treatment are pertinently carried out twice progressive operation, the heat treatment quality of the aluminum alloy is effectively improved, meanwhile, the heat treatment equipment is matched, the continuous operation can be realized, the heat treatment process is simple and convenient, the influence of the external environment is reduced, and the heat treatment efficiency and quality are obviously improved.
In order to achieve the above object, the present invention adopts the following technical solutions:
a heat treatment process for a lightweight aluminum alloy engine bracket comprises the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out, wherein,
the aluminum alloy engine bracket is prepared from 6000 series aluminum alloy materials;
the annealing temperature is 390-430 ℃ and the time is 1-3 h;
in the primary solution/quenching treatment, the temperature of the primary solution treatment is 470-510 ℃, the time is 1-2h, and water quenching is adopted for primary quenching;
in the secondary solution/quenching treatment, the temperature of the secondary solution treatment is 440-460 ℃, the time is 1-2h, and the secondary quenching adopts brine water quenching;
the aging treatment temperature of flowing atmosphere is 100-180 ℃, the time is 8-16h, and the flowing atmosphere is natural air containing 20-30 vt% of nitrogen or argon or the mixture of the nitrogen and the argon;
the aging treatment is carried out at 80-120 deg.C for 4-6h in sealed atmosphere of natural air containing 10-30 vt% argon or helium or their mixture.
As further optimization of the invention, the water quenching temperature of the first-stage quenching is 50-55 ℃; the salt water quenching temperature of the secondary quenching is 35-45 ℃, and the specific gravity of NaCl in the salt water is 1.045-1.080 g/cm3。
As further optimization of the invention, the flowing atmosphere aging treatment is staged heating aging treatment, specifically, the temperature is maintained at 100 ℃ for 2-4h, at 120 ℃ for 2-5h, at 150 ℃ for 3-6h, and at 180 ℃ for 2-5 h.
As further optimization of the invention, the closed atmosphere aging treatment is staged heating aging treatment, specifically, the temperature is maintained at 80 ℃ for 1-2h, at 100 ℃ for 2-3h, and at 120 ℃ for 1-3 h.
A heat treatment device is applied to the heat treatment process of the light aluminum alloy engine bracket, and comprises a hollow cuboid-shaped heat treatment main body, five function cavities are horizontally arranged in the heat treatment main body, the function cavities are a primary solid solution treatment cavity, a primary quenching treatment cavity, a secondary solid solution treatment cavity, a secondary quenching treatment cavity and an aging treatment cavity from left to right in sequence, a communication port for communicating the two cavities is formed in the common side wall of every two adjacent function cavities, an inlet and an outlet corresponding to the communication port are respectively formed in the left side wall and the right side wall of the heat treatment main body, a guide rail groove is formed in the top wall in the heat treatment main body, a connecting block capable of sliding and moving in each function cavity is adaptively connected to the guide rail groove, a telescopic rod is fixedly arranged on the bottom surface of the connecting block, a mechanical claw for fixing an aluminum alloy workpiece is, the outer end of the cross rod is fixedly provided with a sealing cover plate matched with the communicating port, the inlet and the outlet.
As further optimization of the invention, the enclosed areas of the inner side walls of the communication port, the opening and the outlet are the same, and the enclosed areas are correspondingly matched with the enclosed areas of the outer side walls of the sealing cover plate to ensure that the sealing cover plate can seal the communication port, the opening and the outlet; the sealing cover plate is made of high-heat-insulation materials, and high-temperature-resistant sealant is arranged on the outer edge of the sealing cover plate.
As a further optimization of the invention, the inner wall of the opposite side of the sealing cover plate is provided with a heating device.
As a further optimization of the invention, the upper and lower side walls of the heat treatment main body are respectively provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the primary quenching treatment cavity and the secondary quenching treatment cavity, quenching solution pools are respectively arranged in the primary quenching treatment cavity and the secondary quenching treatment cavity, the upper end opening of each quenching solution pool corresponds to the lower end opening of the liquid inlet pipe, and the bottom end of each quenching solution pool is provided with a liquid outlet which is communicated with the upper end opening of the liquid outlet pipe.
As a further optimization of the invention, the upper side wall and the lower side wall of the heat treatment main body are respectively provided with an air inlet pipe and an exhaust pipe which are communicated with the aging treatment cavity.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention carries out two times of progressive operations of solution heat treatment and aging heat treatment by reasonably optimizing the heat treatment process of the aluminum alloy, effectively improves the heat treatment quality of the aluminum alloy, can realize continuous operation by matching heat treatment equipment, is simple and convenient, reduces the influence of external environment, and obviously improves the efficiency and quality of heat treatment.
The method reasonably selects the solid solution temperature, including primary solid solution at 470-510 ℃ and secondary solid solution at 440-460 ℃, has obvious improvement on the proportion and the uniformity of an element solid solution formed in the aluminum-based alloy, gradually reduces the temperature close to the melting point, has no overburning phenomenon, and has low influence on plasticity while improving the strength; after primary solution and primary quenching are matched, the dispersion degree of the excess phase particles is low, and when secondary solution/quenching is matched, the refinement degree of the excess phase particles is improved by 5-15%, the dispersion degree is also obviously improved, the mechanical property is effectively improved, meanwhile, the method has excellent adaptability to later cutting reprocessing, and cracks, component segregation and internal stress are greatly reduced.
The aging treatment of two sections purposefully provides the aging temperature of 80 ℃, 100 ℃, 120 ℃, 150 ℃ and 180 ℃, compared with the aging heat preservation at single temperature, the aging treatment is more effective and stable to the strengthening precipitation effect of supersaturated solid solution and excess phase, and the aging treatment is carried out in flowing atmosphere at higher temperature and then in closed atmosphere at lower temperature, thereby promoting the homogeneity and stability of refined grains in the tissue structure, enhancing the toughening effect of fine grains by about one time, and effectively improving the quality of heat-treated finished products.
Drawings
FIG. 1 is a schematic view of a heat treatment apparatus according to the present invention;
in the figure: 1, a heat treatment main body, 11 inlets, 12 outlets, 13 liquid inlet pipes, 14 liquid outlet pipes, 15 gas inlet pipes, 16 gas outlet pipes, 2 functional cavities, 21 primary solid solution treatment cavities, 22 primary quenching treatment cavities, 23 secondary solid solution treatment cavities, 24 secondary quenching treatment cavities, 25 aging treatment cavities, 3 communicating ports, 4 guide rail grooves, 41 connecting blocks, 42 telescopic rods, 43 mechanical claws, 44 cross rods, 45 sealing cover plates, 5 heating devices and 6 quenching solution pools.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1:
a heat treatment process for a lightweight aluminum alloy engine bracket comprises the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out, wherein,
the aluminum alloy engine bracket is prepared from 6000 series aluminum alloy materials;
the annealing temperature is 400 ℃, and the time is 2 hours;
in the first-stage solution treatment/quenching treatment, the temperature of the first-stage solution treatment is 480 ℃, the time is 1.5h, the first-stage quenching adopts water quenching, and the water quenching temperature is 50 ℃;
in the secondary solution/quenching treatment, the temperature of the secondary solution treatment is 450 ℃, the time is 2 hours, the secondary quenching adopts brine water quenching, the temperature of the brine quenching is 40 ℃, and the specific gravity of NaCl in the brine is 1.060g/cm3；
The aging treatment temperature of flowing atmosphere is 100-180 ℃, the time is 8-16h, specifically, the aging treatment is carried out by heating and aging in stages, the temperature is firstly preserved for 2h at 100 ℃, preserved for 3h at 120 ℃, preserved for 6h at 150 ℃ and preserved for 3h at 180 ℃; the flowing atmosphere is natural air containing 20vt percent of argon;
the aging treatment temperature in a closed atmosphere is 80-120 ℃, the time is 4-6h, specifically, the aging treatment is carried out by heating in stages, firstly, the temperature is kept at 80 ℃ for 1h, the temperature is kept at 100 ℃ for 2h, and the temperature is kept at 120 ℃ for 2 h; the sealed atmosphere was natural air containing 20 vt% argon.
Example 2:
a heat treatment process for a lightweight aluminum alloy engine bracket comprises the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out, wherein,
the aluminum alloy engine bracket is prepared from 6000 series aluminum alloy materials;
the annealing temperature is 390 ℃, and the time is 3 h;
in the primary solid solution/quenching treatment, the primary solid solution treatment temperature is 490 ℃, the time is 2 hours, the primary quenching adopts water quenching, and the water quenching temperature is 55 ℃;
in the secondary solution/quenching treatment, the temperature of the secondary solution treatment is 440 ℃, the time is 2 hours, the secondary quenching adopts brine water quenching, the temperature of the brine quenching is 45 ℃, and the specific gravity of NaCl in the brine is 1.045/cm3；
The aging treatment temperature of flowing atmosphere is 100-180 ℃, the time is 8-16h, specifically, the aging treatment is carried out by heating and aging in stages, firstly, the temperature is kept at 100 ℃ for 2h, the temperature is kept at 120 ℃ for 5h, the temperature is kept at 150 ℃ for 5h, and the temperature is kept at 180 ℃ for 2 h; the flowing atmosphere is natural air containing 20vt percent of mixed gas of nitrogen and argon;
the aging treatment temperature in a closed atmosphere is 80-120 ℃, the time is 4-6h, specifically, the aging treatment is carried out by heating in stages, firstly, the temperature is kept at 80 ℃ for 1h, the temperature is kept at 100 ℃ for 3h, and the temperature is kept at 120 ℃ for 2 h; the sealed atmosphere is natural air containing 20 vt% of mixed gas of argon and helium.
Example 3:
a heat treatment process for a lightweight aluminum alloy engine bracket comprises the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out, wherein,
the aluminum alloy engine bracket is prepared from 6000 series aluminum alloy materials;
the annealing temperature is 400 ℃, and the time is 3 hours;
in the primary solid solution/quenching treatment, the primary solid solution treatment temperature is 500 ℃ and the time is 1.5h, the primary quenching adopts water quenching, and the water quenching temperature is 55 ℃;
second stage fixationIn the solution/quenching treatment, the temperature of the secondary solution treatment is 460 ℃, the time is 1h, the secondary quenching adopts brine water quenching, the temperature of the brine quenching is 45 ℃, and the specific gravity of NaCl in the brine is 1.055g/cm3；
The aging treatment temperature of flowing atmosphere is 100-180 ℃, the time is 8-16h, specifically, the aging treatment is carried out by heating and aging in stages, the temperature is firstly preserved for 4h at 100 ℃, preserved for 2h at 120 ℃, preserved for 3h at 150 ℃ and preserved for 4h at 180 ℃; the flowing atmosphere is natural air containing 30vt percent of mixed gas of nitrogen and argon;
the aging treatment temperature in a closed atmosphere is 80-120 ℃, the time is 4-6h, specifically, the aging treatment is carried out by heating and aging in stages, firstly, the temperature is kept at 80 ℃ for 2h, the temperature is kept at 100 ℃ for 2h, and the temperature is kept at 120 ℃ for 1 h; the sealed atmosphere is natural air containing a mixture of 30 vt% argon and helium.
Example 4:
a heat treatment process for a lightweight aluminum alloy engine bracket comprises the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out, wherein,
the aluminum alloy engine bracket is prepared from 6000 series aluminum alloy materials;
the annealing temperature is 430 ℃, and the time is 1.5 h;
in the primary solid solution/quenching treatment, the primary solid solution treatment temperature is 500 ℃ and the time is 2 hours, the primary quenching adopts water quenching, and the water quenching temperature is 50 ℃;
in the secondary solution/quenching treatment, the temperature of the secondary solution treatment is 450 ℃, the time is 2 hours, the secondary quenching adopts brine water quenching, the temperature of the brine quenching is 35 ℃, and the specific gravity of NaCl in the brine is 1.080g/cm3；
The aging treatment temperature of flowing atmosphere is 100-180 ℃, the time is 8-16h, specifically, the aging treatment is carried out by heating and aging in stages, the temperature is firstly preserved for 2h at 100 ℃, preserved for 2h at 120 ℃, preserved for 3h at 150 ℃ and preserved for 2h at 180 ℃; the flowing atmosphere is natural air containing 30vt percent of mixed gas of nitrogen and argon;
the aging treatment temperature in a closed atmosphere is 80-120 ℃, the time is 4-6h, specifically, the aging treatment is carried out by heating and aging in stages, firstly, the temperature is kept at 80 ℃ for 2h, the temperature is kept at 100 ℃ for 2h, and the temperature is kept at 120 ℃ for 2 h; the sealed atmosphere was natural air containing 10 vt% argon.
Example 5:
a heat treatment process for a lightweight aluminum alloy engine bracket comprises the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out, wherein,
the aluminum alloy engine bracket is prepared from 6000 series aluminum alloy materials;
the annealing temperature is 420 ℃, and the time is 1 h;
in the primary solid solution/quenching treatment, the primary solid solution treatment temperature is 480 ℃ and the time is 2 hours, the primary quenching adopts water quenching, and the water quenching temperature is 55 ℃;
in the secondary solution/quenching treatment, the temperature of the secondary solution treatment is 460 ℃ and the time is 2h, the secondary quenching adopts brine water quenching, the temperature of the brine quenching is 45 ℃, and the specific gravity of NaCl in the brine is 1.060g/cm3；
The aging treatment temperature of flowing atmosphere is 100-180 ℃, the time is 8-16h, specifically, the aging treatment is carried out by heating and aging in stages, the temperature is firstly preserved for 3h at 100 ℃, preserved for 5h at 120 ℃, preserved for 6h at 150 ℃ and preserved for 2h at 180 ℃; the flowing atmosphere is natural air containing 20vt percent of mixed gas of nitrogen and argon;
the aging treatment temperature in a closed atmosphere is 80-120 ℃, the time is 4-6h, specifically, the aging treatment is carried out by heating in stages, firstly, the temperature is kept for 1h at 80 ℃, for 3h at 100 ℃ and for 1h at 120 ℃; the sealed atmosphere is natural air containing 20 vt% of mixed gas of argon and helium.
Example 6:
based on the embodiments 1-5, an adapted heat treatment apparatus is proposed, which is constructed,
the heat treatment device comprises a hollow cuboid-shaped heat treatment main body 1, five function cavities 2 which are horizontally arranged are arranged in the heat treatment main body 1, the function cavities 2 are a primary solid solution treatment cavity 21, a primary quenching treatment cavity 22, a secondary solid solution treatment cavity 23, a secondary quenching treatment cavity 24 and an aging treatment cavity 25 from left to right in sequence, a communication port 3 for communicating the two cavities is formed in the common side wall of every two adjacent function cavities 2, an inlet 11 and an outlet 12 which correspond to the communication port 3 are respectively formed in the left side wall and the right side wall of the heat treatment main body 1, namely, the heat treatment main body is of a through structure (convenient for penetrating movement of a connecting block, a mechanical claw and the like connected on a rail groove) from left to right;
a guide rail groove 4 is formed in the top wall in the heat treatment main body 1, a connecting block 41 which can slidably move in each functional cavity 2 is connected to the guide rail groove 4 in a matched mode (the connecting block penetrates through each communicating port to move, namely the guide rail groove is formed in the edge line of the communicating port, the guide rail groove and the connecting block can adopt an existing matched electric guide rail and electric slider structure which is a mature technology, the model is not limited and the connecting block can be installed as required), a telescopic rod 42 is fixedly arranged on the bottom surface of the connecting block 41 (a conventional commercially available electric control hydraulic telescopic rod can be adopted, the telescopic rod structure is mainly used for immersing a workpiece into a quenching solution pool, meanwhile, the telescopic rod can also move up and down properly in the solid solution treatment cavity, and the uniformity of heat treatment is improved), and a mechanical claw 43 for fixing the aluminum; in addition, as an optimization improvement, the bottom end of the telescopic rod and the mechanical claw can be in rotary connection, namely, a workpiece fixed on the mechanical claw can move up and down or horizontally rotate in the functional cavity, so that the uniformity of heat treatment is improved.
Connecting block 41 bilateral symmetry even has horizontal pole 44, horizontal pole 44 outer end set firmly with the sealed apron 45 of intercommunication mouth 3, import 11, 12 adaptations of export is equipped with heating device 5 on the sealed apron 45 inboard wall that inclines in opposite directions (heating device can be for by automatically controlled heater strip, heat as required, if at one-level solution treatment chamber, second grade solution treatment chamber, the heating temperature rise of ageing treatment intracavity), locate sealed apron with heating device on, can make it shift to different functional cavity along with the work piece, simple and practical, the flexibility ratio is high.
As the optimization of the structure of the equipment in the embodiment, the enclosed areas of the inner side walls of the communication port 3, the opening 11 and the outlet 12 are the same, and the enclosed areas are correspondingly matched with the enclosed areas of the outer side wall of the sealing cover plate 45 to ensure that the sealing cover plate 45 can seal the communication port 3, the opening 11 and the outlet 12; the sealing cover plate 45 is made of high-heat-insulation materials, and high-temperature-resistant sealant is arranged on the outer edge of the sealing cover plate 45.
The upper side wall and the lower side wall of the heat treatment main body 1 are respectively provided with a liquid inlet pipe 13 and a liquid outlet pipe 14 which are communicated with a primary quenching treatment cavity 22 and a secondary quenching treatment cavity 24, quenching solution pools 6 are respectively arranged in the primary quenching treatment cavity 22 and the secondary quenching treatment cavity 22, the upper end openings of the quenching solution pools 6 correspond to the lower end openings of the liquid inlet pipe 13, and the bottom ends of the quenching solution pools 6 are provided with liquid outlet openings communicated with the upper end openings of the liquid outlet pipe 14; the liquid inlet pipe is used for adding quenching liquid into the quenching solution tank, and after quenching is finished, the quenching liquid is discharged from the liquid outlet and the liquid discharge pipe.
The upper side wall and the lower side wall of the heat treatment main body 1 are respectively provided with an air inlet pipe 15 and an air outlet pipe 16 which are communicated with the aging treatment cavity 25; the intake pipe 15 is used for letting in gas to the function intracavity, and the blast pipe 16 is used for deriving the air current, when the cavity needs airtight atmosphere, can be with the valve closure on the blast pipe (intake pipe, blast pipe, feed liquor pipe, drain pipe all correspond and be equipped with control flap).
In addition, air inlet pipes and air outlet pipes (not shown in the figure) can be arranged on the upper side wall and the lower side wall of the heat treatment main body corresponding to the first solution treatment chamber and the second solution treatment chamber, and are used for ensuring forced circulation of air in the solution treatment process and improving the heat treatment effect.
An air flow distributor (not shown in the figure) communicated with the lower port of the air inlet pipe can be embedded in the side wall of the heat treatment main body, and the introduced air is uniformly dispersed in the cavity.
Example 7:
based on the heat treatment process of example 1, the secondary solution/quench treatment step was removed, and then a heat-out operation was performed using the same heat treatment apparatus of example 6 to obtain a heat-treated aluminum alloy engine mount workpiece.
Example 8:
based on the heat treatment process of example 1, the closed atmosphere aging treatment step was removed, and then the heat treatment apparatus of example 6 was also used to perform a heat-out operation, to obtain a heat-treated aluminum alloy engine mount workpiece.
Example 9:
based on the heat treatment process of example 1, the secondary solution/quenching treatment step and the closed atmosphere aging treatment step were removed, and then the heat treatment apparatus of example 6 was also used to perform a heat-out operation, to obtain a heat-treated aluminum alloy engine mount workpiece.
The heat-treated workpieces obtained in examples 1 to 5 (which were also operated using the heat treatment apparatus of example 6) and examples 7 to 9 were subjected to performance tests (the annealing process of the first step of each example was a unified operation), and the data were as follows (the workpieces were cast using 6061 aluminum alloy):
it is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A heat treatment process for a lightweight aluminum alloy engine bracket is characterized by comprising the steps of annealing, primary solution/quenching treatment, secondary solution/quenching treatment, flowing atmosphere aging treatment, closed atmosphere aging treatment and performance detection which are sequentially carried out, wherein,
the aluminum alloy engine bracket is prepared from 6000 series aluminum alloy materials;
the annealing temperature is 390-430 ℃ and the time is 1-3 h;
in the first-stage solution/quenching treatment, the temperature of the first-stage solution treatment is 470-510 ℃ and the time is 1-2h, and the first-stage quenching adopts water quenching at the temperature of 50-55 ℃;
in the secondary solution/quenching treatment, the temperature of the secondary solution treatment is 440-460 ℃, the time is 1-2h, the secondary quenching adopts brine water quenching, the temperature of the brine quenching is 35-45 ℃, and the specific gravity of NaCl in the brine is 1.045-1.080 g/cm3；
The flowing atmosphere aging treatment is performed at 100-180 ℃ for 8-16h, the flowing atmosphere is natural air containing 20-30 vt% of nitrogen or argon or a mixed gas of the nitrogen and the argon, the flowing atmosphere aging treatment is staged heating aging, specifically, the temperature is maintained at 100 ℃ for 2-4h, the temperature is maintained at 120 ℃ for 2-5h, the temperature is maintained at 150 ℃ for 3-6h, and the temperature is maintained at 180 ℃ for 2-5 h;
the aging treatment in a sealed atmosphere is carried out at the temperature of 80-120 ℃ for 4-6h, the sealed atmosphere is natural air containing 10-30 vt% of argon or helium or a mixed gas of the argon and the helium, and the aging treatment in the sealed atmosphere is stage heating aging, specifically, the temperature is kept at 80 ℃ for 1-2h, the temperature is kept at 100 ℃ for 2-3h, and the temperature is kept at 120 ℃ for 1-3 h.
2. A heat treatment device applied to the heat treatment process for the light-weight aluminum alloy engine support of claim 1, is characterized in that: comprises a hollow cuboid-shaped heat treatment main body, five functional cavities are horizontally arranged in the heat treatment main body, the functional cavities are a primary solution treatment cavity, a primary quenching treatment cavity, a secondary solution treatment cavity, a secondary quenching treatment cavity and an aging treatment cavity from left to right in sequence, a communication port for communicating two cavities is arranged on the common side wall of two adjacent functional cavities, an inlet and an outlet corresponding to the communication port are respectively arranged on the left side wall and the right side wall of the heat treatment main body, the top wall in the heat treatment main body is provided with a guide rail groove, the guide rail groove is matched and connected with connecting blocks which can slide and move in each functional cavity, the connecting block bottom surface has set firmly the telescopic link, and the telescopic link bottom even has the gripper that is used for fixed aluminum alloy work piece, and the connecting block bilateral symmetry even has the horizontal pole, the horizontal pole outer end set firmly with the sealed apron of intercommunication mouth, import, export adaptation.
3. The thermal processing apparatus of claim 2, wherein: the enclosed areas of the inner side walls of the communication port, the opening and the outlet are the same, and the enclosed areas of the inner side walls of the communication port, the opening and the outlet are correspondingly matched with the enclosed areas of the outer side walls of the sealing cover plate, so that the sealing cover plate can seal the communication port, the opening and the outlet; the sealing cover plate is made of high-heat-insulation materials, and high-temperature-resistant sealant is arranged on the outer edge of the sealing cover plate.
4. The thermal processing apparatus of claim 2, wherein: and the inner wall of the opposite side of the sealing cover plate is provided with a heating device.
5. The thermal processing apparatus of claim 2, wherein: the upper side wall and the lower side wall of the heat treatment main body are respectively provided with a liquid inlet pipe and a liquid outlet pipe which are communicated with the first-stage quenching treatment cavity and the second-stage quenching treatment cavity, quenching solution pools are respectively arranged in the first-stage quenching treatment cavity and the second-stage quenching treatment cavity, an opening at the upper end of each quenching solution pool corresponds to the lower port of the liquid inlet pipe, and a liquid outlet communicated with the upper port of the liquid outlet pipe is formed in the bottom end of each quenching solution pool.
6. The thermal processing apparatus of claim 2, wherein: and the upper side wall and the lower side wall of the heat treatment main body are respectively provided with an air inlet pipe and an exhaust pipe which are communicated with the aging treatment cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910811482.1A CN110423963B (en) | 2019-08-30 | 2019-08-30 | Heat treatment process and heat treatment equipment for lightweight aluminum alloy engine support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910811482.1A CN110423963B (en) | 2019-08-30 | 2019-08-30 | Heat treatment process and heat treatment equipment for lightweight aluminum alloy engine support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110423963A CN110423963A (en) | 2019-11-08 |
| CN110423963B true CN110423963B (en) | 2021-02-09 |
Family
ID=68416662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910811482.1A Active CN110423963B (en) | 2019-08-30 | 2019-08-30 | Heat treatment process and heat treatment equipment for lightweight aluminum alloy engine support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110423963B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390134B (en) * | 2020-04-28 | 2021-07-02 | 华中科技大学 | High-performance die casting forming method based on two-plate die casting machine and product |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834281A (en) * | 2005-12-06 | 2006-09-20 | 北京有色金属研究总院 | Two-stage forced solution treatment method for high strength deformed aluminum alloy |
| EP2631317A1 (en) * | 2012-02-23 | 2013-08-28 | AMAG rolling GmbH | Annealable aluminium alloy and method for improving artificial ageing ability |
| CN103060584B (en) * | 2012-12-21 | 2015-05-20 | 佛山市深达美特种铝合金有限公司 | Ultra-fine grain 6061 aluminum alloy and preparation method thereof |
| CN103774067A (en) * | 2014-02-26 | 2014-05-07 | 常州大学 | Two-stage aging method for improving intercrystalline corrosion resistance of 6000 series of aluminium alloy |
-
2019
- 2019-08-30 CN CN201910811482.1A patent/CN110423963B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110423963A (en) | 2019-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6486895B2 (en) | Method for artificially aging aluminum-zinc-magnesium alloy and products based thereon | |
| CN105951008B (en) | A kind of Technology for Heating Processing of high-strength corrosion-resistant erosion aluminium alloy | |
| CN109355537B (en) | 6-series aluminum alloy section for new energy battery tray and processing method thereof | |
| CN109487186B (en) | Method for shape/performance collaborative optimization of creep age forming aluminum alloy component | |
| CN109207811A (en) | A kind of preparation method and applications of aluminium alloy extrusions | |
| CN101956151A (en) | Heat treatment technology of high strength aluminium alloy | |
| CN110423963B (en) | Heat treatment process and heat treatment equipment for lightweight aluminum alloy engine support | |
| CN108796313B (en) | Al-Mg-Si series wrought aluminum alloy and strengthening and toughening treatment method thereof | |
| CN107022725A (en) | A kind of Technology for Heating Processing for improving ageing strengthening type Al Mg Zn alloy corrosion among crystalline grains | |
| CN109023180B (en) | Aging heat treatment method of 7 series aluminum alloy | |
| CN110669967A (en) | Rapid-extrusion high-strength wrought aluminum alloy and preparation method thereof | |
| CN111531177B (en) | Short-flow low-cost TC4 titanium alloy pipe preparation process | |
| CN107460382A (en) | The superpower Alcoa rolled plate of isotropism and preparation method | |
| CN103205559A (en) | Method and device for performing inert gas protective cover type annealing on cold-rolled titanium strip coils | |
| CN103572181A (en) | Thermal treatment method of lowering stress for spraying and forming 7055 aluminum alloy forged piece | |
| CN106148865A (en) | A kind of ageing hot processing method of Al Mg Zn alloy | |
| CN108504973A (en) | A kind of heat treatment method of naval vessel Al-Mg-Si alloy | |
| CN104789827B (en) | A kind of Alcoa section bar | |
| CN112962005A (en) | Preparation method of high-strength high-thermal-conductivity aluminum alloy | |
| CN109609825B (en) | Method for preparing ultrahigh-strength magnesium alloy by adopting pre-stretching composite two-stage aging process | |
| CN109468558B (en) | Extrusion and heat treatment process of 7xxx series aluminum alloy for aerospace | |
| CN107254615A (en) | A kind of alloy for being used to cast foreign-going ship propeller | |
| CN105568190A (en) | Two-stage aging process of Al-5.6Zn-2.1Mg-1.2Cu-0.1Zr-0.1Er alloy | |
| CN115198145A (en) | Aluminum alloy material for heat exchanger and production process thereof | |
| CN112760530A (en) | Production process of high-toughness corrosion-resistant damping aluminum profile for doors and windows |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210119 Address after: 226400 Chengnan industrial concentration area, zuegang Town, Rudong County, Nantong City, Jiangsu Province (Group 43, Yinxing village, zuegang town) Applicant after: Rudong Aerospace Machinery Manufacturing Co.,Ltd. Address before: No.305, Anji street, Jiangning street, Jiangning District, Nanjing City, Jiangsu Province, 211100 Applicant before: NANJING SIJIANING NEW MATERIAL TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |