CN110643867A - Aluminum alloy plate and automobile aluminum alloy structural part precision machining process - Google Patents
Aluminum alloy plate and automobile aluminum alloy structural part precision machining process Download PDFInfo
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- CN110643867A CN110643867A CN201911036757.5A CN201911036757A CN110643867A CN 110643867 A CN110643867 A CN 110643867A CN 201911036757 A CN201911036757 A CN 201911036757A CN 110643867 A CN110643867 A CN 110643867A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/06—Making sheets
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—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 of alloys with magnesium as the next major constituent
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- Extrusion Of Metal (AREA)
Abstract
The invention discloses an aluminum alloy plate and a precision machining process of an automobile aluminum alloy structural part, wherein the aluminum alloy plate comprises the following components in percentage by weight: 0.05-0.15% of Si, Mn: 0.2% -0.5%, Cr: 0.5% -0.9%, Cu: 0.04-0.09% of Fe, 0.1-0.2% of Fe, Mg: 4.0% -5.0%, C: 0.5% -1.0%, the balance being Al and some impurity elements, step one: heating the extrusion forming die, transferring the heated extrusion forming die to an extruder die holder, adding an aluminum alloy plate into the extrusion forming die for preheating, and carrying out extrusion forming through an extrusion cylinder after preheating for a certain time to obtain a first section. The invention improves the oxidation resistance, the structural strength and the thermoplasticity of the aluminum alloy, reduces the stress in the aluminum alloy member, avoids the fracture condition, improves the tensile strength and the yield strength of the aluminum alloy, improves the elongation and shows good mechanical property.
Description
Technical Field
The invention belongs to the field of aluminum alloy processing, and particularly relates to a precision processing technology of an aluminum alloy plate and an automobile aluminum alloy structural part.
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. The rapid development of industrial economy has increased the demand for aluminum alloy welded structural members, and the research on the weldability of aluminum alloys is also deepened. Aluminum alloys are currently the most used alloys. The aluminum alloy has low density, high strength similar to or superior to that of high-quality steel, good plasticity, excellent electric conductivity, heat conductivity and corrosion resistance, is widely used in industry, and is second to steel in use amount. Some aluminum alloys can be heat treated to achieve good mechanical, physical, and corrosion properties.
The precision machining process refers to various machining processes with higher machining precision and higher surface smoothness than those of the corresponding machining methods. The precision cutting process is a process of cutting off an extremely thin layer of metal on the surface of a workpiece by means of a machine tool with high precision and good rigidity and a cutter with fine sharpening at a very high or very low cutting speed and a very small cutting depth and feeding amount, and obviously, the process can obviously improve the processing precision of parts. Because the residual area in the cutting process is small, and adverse effects of cutting force, cutting heat, vibration and the like are eliminated to the maximum extent, the surface deterioration layer left in the previous procedure can be effectively removed, the machined surface basically has no residual tensile stress, the roughness is greatly reduced, and the quality of the machined surface is greatly improved.
The aluminum alloy structural member in the automobile structure is widely used, the strength of the aluminum alloy structural member is related to the safety and the stability of an automobile, however, the existing aluminum alloy has the problems of low hardness, poor thermoplasticity and poor corrosion resistance, the structural member is easy to deform and break in the using process, the stability of the automobile structure is reduced, and the driving risk of the automobile is improved.
Disclosure of Invention
The invention aims to provide an aluminum alloy plate and a precision machining process of an automobile aluminum alloy structural part, and aims to solve the problems that the existing aluminum alloy in the background art has low hardness, poor thermoplasticity and poor corrosion resistance, the structural part is easy to deform and break in the using process, the stability of the automobile structure is reduced, and the running risk of an automobile is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the aluminum alloy plate comprises the following components in percentage by weight: 0.05-0.15% of Si, Mn: 0.2% -0.5%, Cr: 0.5% -0.9%, Cu: 0.04-0.09% of Fe, 0.1-0.2% of Fe, Mg: 4.0% -5.0%, C: 0.5 to 1.0 percent, and the balance of Al and some inevitable impurity elements.
The invention also provides a precision machining process for preparing the automobile aluminum alloy structural part from the aluminum alloy plate, which comprises the following operation steps:
the method comprises the following steps: heating an extrusion forming die, transferring the die to an extruder die holder, and mixing the components in percentage by weight: 0.05-0.15% of Si, Mn: 0.2% -0.5%, Cu: 0.04-0.09% of Fe, 0.1-0.2% of Fe, Mg: 4.0% -5.0%, C: adding 0.5-1.0% of aluminum alloy plate, the balance being Al and some inevitable impurity elements, into an extrusion forming die, preheating, and after preheating for a certain time, carrying out extrusion forming through an extrusion barrel to obtain a first section;
step two: sending the first section into a cooling water tank for on-line quenching treatment to obtain a second section;
step three: carrying out sawing, traction and tension straightening treatment on the second section bar to obtain a third section bar;
step four: carrying out artificial aging treatment on the third section to obtain an aluminum alloy plate;
step five: carrying out primary solution treatment on the aluminum alloy plate, and then putting the aluminum alloy plate into water to cool the aluminum alloy plate to room temperature;
step six: the two sides of the aluminum alloy plate are lapped, and the allowance of four sides is 0.1mm, so that the flatness of the aluminum alloy plate is kept between 0.05 and 0.1;
step seven: carrying out secondary solution treatment on the aluminum alloy plate, carrying out aging treatment in an oven, and then cooling to room temperature by adopting air blowing;
step eight: and processing hole positions and steps on the aluminum alloy plate, and then finely flying two surfaces of the aluminum alloy plate.
Preferably, the heating temperature is 420-450 ℃, the preheating temperature is 450-460 ℃, and the preheating time is 40-80 minutes.
Preferably, the temperature of the extrusion cylinder in the first step is 400-430 ℃, and the extrusion speed of the extrusion molding is 0.8-1.2 m/min.
Preferably, the temperature of the cooling water tank in the second step is 30-60 ℃, and the speed of on-line quenching is 0.8-1.3 m/min.
Preferably, the heating temperature of the artificial aging in the fourth step is 115 ℃ and the heat preservation time is 7-9h, then the temperature is increased to 160 ℃ and the heat preservation is continued for 7-9 h.
Preferably, in the fifth step, the first-stage solid solution temperature is 450-460 ℃, the first-stage solid solution time is 30-120 minutes, and the heat preservation time is 40-60 minutes.
Preferably, the secondary solid solution temperature in the seventh step is 490-520 ℃, the secondary solid solution time is 30-110 minutes, and the heat preservation time is 20-100 minutes.
Preferably, the air blowing cooling in the seventh step is carried out for 15-20 minutes, the air pressure is reduced along with the temperature reduction of the aluminum alloy plate, and the air blowing is continued for 4-6 minutes when the aluminum alloy plate is cooled to the room temperature.
The invention has the technical effects and advantages that: compared with the prior art, the precision machining process for the aluminum alloy plate and the automobile aluminum alloy structural part has the following advantages:
1. according to the invention, the oxidation resistance of the aluminum alloy can be greatly improved by adding C into the components, the structural strength of the aluminum alloy can be greatly improved by adding Cr into the components, and the thermoplasticity of the aluminum alloy can be greatly improved by adding Fe into the components;
2. the processing technology of the invention can reduce the stress in the aluminum alloy component, avoid the fracture condition in the use process, greatly improve the tensile strength and the yield strength of the aluminum alloy, improve the structural performance of the aluminum alloy, greatly improve the elongation and show good mechanical properties.
Detailed Description
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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the invention provides a precision machining process of an automobile aluminum alloy structural part, which comprises the following operation steps:
the method comprises the following steps: heating an extrusion forming die, transferring the die to an extruder die holder, and mixing the components in percentage by weight: 0.15% of Si, Mn: 0.5%, Cu: 0.9%, Fe:0.2%, Mg: 4.0%, C: adding 0.5 percent of aluminum alloy plate, the balance of Al and some inevitable impurity elements, into an extrusion forming die, preheating, and carrying out extrusion forming through an extrusion barrel after preheating for a certain time to obtain a first section;
step two: sending the first section into a cooling water tank for on-line quenching treatment to obtain a second section;
step three: carrying out sawing, traction and tension straightening treatment on the second section bar to obtain a third section bar;
step four: carrying out artificial aging treatment on the third section to obtain an aluminum alloy plate;
step five: carrying out primary solution treatment on the aluminum alloy plate, and then putting the aluminum alloy plate into water to cool the aluminum alloy plate to room temperature;
step six: the two sides of the aluminum alloy plate are lapped, and the allowance of four sides is 0.1mm, so that the flatness of the aluminum alloy plate is kept at 0.05;
step seven: carrying out secondary solution treatment on the aluminum alloy plate, carrying out aging treatment in an oven, and then cooling to room temperature by adopting air blowing;
step eight: and processing hole positions and steps on the aluminum alloy plate, and then finely flying two surfaces of the aluminum alloy plate.
Preferably, the heating temperature is 430 ℃, the preheating temperature is 450 ℃, the preheating time is 40 minutes, the aluminum alloy plate can be rapidly melted, and the melting effect is good.
Preferably, the temperature of the extrusion cylinder in the first step is 400 ℃, the extrusion speed of the extrusion forming is 0.8m/min, and the internal stress of the aluminum alloy can be greatly reduced.
Preferably, the temperature of the cooling water tank in the second step is 30 ℃, and the speed of on-line quenching is 0.8 m/min.
Preferably, the heating temperature of the artificial aging in the fourth step is 100 ℃, the heat preservation time is 9 hours, then the temperature is raised to 140 ℃, the heat preservation is continued for 7 hours, and the internal stress and the tension of the aluminum alloy are greatly reduced.
Preferably, in the fifth step, the first-stage solid solution temperature is 450 ℃, the first-stage solid solution time is 30 minutes, and the heat preservation time is 40 minutes.
Preferably, in the seventh step, the secondary solid solution temperature is 490 ℃, the secondary solid solution time is 30 minutes, and the heat preservation time is 20 minutes.
Preferably, the air blowing cooling in the seventh step is carried out for 15 minutes, the air pressure is reduced along with the temperature reduction of the aluminum alloy plate, and when the aluminum alloy plate is cooled to the room temperature, the air blowing is continuously carried out on the aluminum alloy plate for 4 minutes, so that the shape integrity of the aluminum alloy plate is ensured, and the cooling of the aluminum alloy plate is accelerated.
The second implementation: the difference between the present embodiment and the first embodiment is:
the invention provides a precision machining process of an automobile aluminum alloy structural part, which comprises the following operation steps:
the method comprises the following steps: heating an extrusion forming die, transferring the die to an extruder die holder, and mixing the components in percentage by weight: 0.0% of Si, Mn: 0.2%, Cu: 0.04%, Fe:0.1%, Mg: 4.0%, C: adding 0.5 percent of aluminum alloy plate, the balance of Al and some inevitable impurity elements, into an extrusion forming die, preheating, and carrying out extrusion forming through an extrusion barrel after preheating for a certain time to obtain a first section;
step two: sending the first section into a cooling water tank for on-line quenching treatment to obtain a second section;
step three: carrying out sawing, traction and tension straightening treatment on the second section bar to obtain a third section bar;
step four: carrying out artificial aging treatment on the third section to obtain an aluminum alloy plate;
step five: carrying out primary solution treatment on the aluminum alloy plate, and then putting the aluminum alloy plate into water to cool the aluminum alloy plate to room temperature;
step six: the two sides of the aluminum alloy plate are lapped, and the allowance of four sides is 0.1mm, so that the flatness of the aluminum alloy plate is kept at 0.05;
step seven: carrying out secondary solution treatment on the aluminum alloy plate, carrying out aging treatment in an oven, and then cooling to room temperature by adopting air blowing;
step eight: and processing hole positions and steps on the aluminum alloy plate, and then finely flying two surfaces of the aluminum alloy plate.
Preferably, the heating temperature is 420 degrees celsius, the preheating temperature is 460 degrees celsius, and the preheating time is 80 minutes.
Preferably, the temperature of the extrusion cylinder in the first step is 430 ℃, and the extrusion speed of the extrusion forming is 1.2 m/min.
Preferably, the temperature of the cooling water tank in the second step is 30 ℃, and the speed of on-line quenching is 1.3 m/min.
Preferably, the heating temperature of the artificial aging in the fourth step is 115 ℃, the heat preservation time is 8 hours, then the temperature is increased to 160 ℃, and the heat preservation is continued for 7 hours.
Preferably, in the fifth step, the first-stage solid solution temperature is 460 ℃, the first-stage solid solution time is 120 minutes, and the heat preservation time is 60 minutes.
Preferably, in the seventh step, the secondary solid solution temperature is 520 ℃, the secondary solid solution time is 30 minutes, and the heat preservation time is 100 minutes.
Preferably, the air blowing and temperature reduction in the seventh step are carried out for 20 minutes, the air pressure is reduced along with the temperature reduction of the aluminum alloy plate, and the air blowing is continued for 4 minutes when the aluminum alloy plate is cooled to the room temperature.
Example three: the difference between this embodiment and the first and second embodiments is:
the invention provides a precision machining process of an automobile aluminum alloy structural part, which comprises the following operation steps:
the method comprises the following steps: heating an extrusion forming die, transferring the die to an extruder die holder, and mixing the components in percentage by weight: 0.15% of Si, Mn: 0.2%, Cu: 0.09%, Fe:0.1%, Mg: 4.0%, C: adding 0.5 percent of aluminum alloy plate, the balance of Al and some inevitable impurity elements, into an extrusion forming die, preheating, and carrying out extrusion forming through an extrusion barrel after preheating for a certain time to obtain a first section;
step two: sending the first section into a cooling water tank for on-line quenching treatment to obtain a second section;
step three: carrying out sawing, traction and tension straightening treatment on the second section bar to obtain a third section bar;
step four: carrying out artificial aging treatment on the third section to obtain an aluminum alloy plate;
step five: carrying out primary solution treatment on the aluminum alloy plate, and then putting the aluminum alloy plate into water to cool the aluminum alloy plate to room temperature;
step six: for the two flying surfaces of the aluminum alloy plate, the allowance of four edges is 0.1mm, so that the flatness of the aluminum alloy plate is kept at 0.1;
step seven: carrying out secondary solution treatment on the aluminum alloy plate, carrying out aging treatment in an oven, and then cooling to room temperature by adopting air blowing;
step eight: and processing hole positions and steps on the aluminum alloy plate, and then finely flying two surfaces of the aluminum alloy plate.
Preferably, the heating temperature is 450 ℃, the preheating temperature is 456 ℃, and the preheating time is 40 minutes.
Preferably, the temperature of the extrusion cylinder in the first step is 400 ℃, and the extrusion speed of the extrusion forming is 1.2 m/min.
Preferably, the temperature of the cooling water tank in the second step is 30 ℃, and the speed of on-line quenching is 1.3 m/min.
Preferably, the heating temperature of the artificial aging in the fourth step is 105 ℃, the heat preservation time is 7 hours, then the temperature is increased to 160 ℃, and the heat preservation is continued for 7 hours.
Preferably, in the fifth step, the first-stage solid solution temperature is 450 ℃, the first-stage solid solution time is 30 minutes, and the heat preservation time is 40 minutes.
Preferably, in the seventh step, the secondary solid solution temperature is 495 ℃, the secondary solid solution time is 60 minutes, and the heat preservation time is 60 minutes.
Preferably, the air blowing and temperature reduction in the seventh step are carried out for 20 minutes, the air pressure is reduced along with the temperature reduction of the aluminum alloy plate, and the air blowing is continued for 6 minutes when the aluminum alloy plate is cooled to the room temperature.
Example four: the differences between the present embodiment and the first, second and third embodiments are:
the invention provides a precision machining process of an automobile aluminum alloy structural part, which comprises the following operation steps:
the method comprises the following steps: heating an extrusion forming die, transferring the die to an extruder die holder, and mixing the components in percentage by weight: 0.15% of Si, Mn: 0.2%, Cu: 0.09%, Fe:0.1%, Mg: 5.0%, C: adding 0.5 percent of aluminum alloy plate, the balance of Al and some inevitable impurity elements, into an extrusion forming die, preheating, and carrying out extrusion forming through an extrusion barrel after preheating for a certain time to obtain a first section;
step two: sending the first section into a cooling water tank for on-line quenching treatment to obtain a second section;
step three: carrying out sawing, traction and tension straightening treatment on the second section bar to obtain a third section bar;
step four: carrying out artificial aging treatment on the third section to obtain an aluminum alloy plate;
step five: carrying out primary solution treatment on the aluminum alloy plate, and then putting the aluminum alloy plate into water to cool the aluminum alloy plate to room temperature;
step six: the two sides of the aluminum alloy plate are lapped, and the allowance of four sides is 0.1mm, so that the flatness of the aluminum alloy plate is kept at 0.05;
step seven: carrying out secondary solution treatment on the aluminum alloy plate, carrying out aging treatment in an oven, and then cooling to room temperature by adopting air blowing;
step eight: and processing hole positions and steps on the aluminum alloy plate, and then finely flying two surfaces of the aluminum alloy plate.
Preferably, the heating temperature is 430 degrees centigrade, the preheating temperature is 460 degrees centigrade, and the preheating time is 80 minutes.
Preferably, the temperature of the extrusion cylinder in the first step is 420 ℃, and the extrusion speed of the extrusion forming is 1.0 m/min.
Preferably, the temperature of the cooling water tank in the second step is 60 ℃, and the speed of on-line quenching is 1.2 m/min.
Preferably, the heating temperature of the artificial aging in the fourth step is 105 ℃, the heat preservation time is 7 hours, then the temperature is raised to 140 ℃, and the heat preservation is continued for 8 hours.
Preferably, in the fifth step, the first-stage solid solution temperature is 455 ℃, the first-stage solid solution time is 80 minutes, and the heat preservation time is 50 minutes.
Preferably, in the seventh step, the secondary solid solution temperature is 490 ℃, the secondary solid solution time is 70 minutes, and the heat preservation time is 40 minutes.
Preferably, the air blowing and temperature reduction in the seventh step are carried out for 16 minutes, the air pressure is reduced along with the temperature reduction of the aluminum alloy plate, and the air blowing is continued for 5 minutes when the aluminum alloy plate is cooled to the room temperature.
The working principle is as follows: through adding C in the composition, can improve the oxidation resistance of aluminum alloy greatly, through adding Cr in the composition, can improve the structural strength of aluminum alloy greatly, through adding Fe in the composition, can promote the thermoplasticity of aluminum alloy greatly, this processing technology, can reduce the stress in the aluminum alloy component, the situation of fracture appears in the use has been avoided, the tensile strength and the yield strength of aluminum alloy have been improved greatly simultaneously, the structural property of aluminum alloy has been improved, the elongation has been improved greatly simultaneously, demonstrate good mechanical properties.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. Aluminum alloy plate, its characterized in that: the composition comprises the following components in percentage by weight: si:0.05% -0.15%, Mn: 0.2% -0.5%, Cr: 0.5% -0.9%, Cu: 0.04% -0.09%, Fe:0.1% -0.2%, Mg: 4.0% -5.0%, C: 0.5 to 1.0 percent, and the balance of Al and some inevitable impurity elements.
2. A precision machining process for manufacturing an automotive aluminum alloy structural member using the aluminum alloy sheet as set forth in claim 1, characterized by comprising the following steps:
the method comprises the following steps: heating an extrusion forming die, transferring the die to an extruder die holder, and mixing the components in percentage by weight: si:0.05% -0.15%, Mn: 0.2% -0.5%, Cu: 0.04% -0.09%, Fe:0.1% -0.2%, Mg: 4.0% -5.0%, C: 0.5-1.0 percent of aluminum alloy plate, the balance of Al and some inevitable impurity elements, is added into an extrusion forming die for preheating, and after the aluminum alloy plate is preheated for a certain time, the aluminum alloy plate is extruded and formed by an extrusion barrel to obtain a first section;
step two: sending the first section into a cooling water tank for on-line quenching treatment to obtain a second section;
step three: carrying out sawing, traction and tension straightening treatment on the second section bar to obtain a third section bar;
step four: carrying out artificial aging treatment on the third section to obtain an aluminum alloy plate;
step five: carrying out primary solution treatment on the aluminum alloy plate, and then putting the aluminum alloy plate into water to cool the aluminum alloy plate to room temperature;
step six: the two sides of the aluminum alloy plate are lapped, and the allowance of four sides is 0.1mm, so that the flatness of the aluminum alloy plate is kept between 0.05 and 0.1;
step seven: carrying out secondary solution treatment on the aluminum alloy plate, carrying out aging treatment in an oven, and then cooling to room temperature by adopting air blowing;
step eight: and processing hole positions and steps on the aluminum alloy plate, and then finely flying two surfaces of the aluminum alloy plate.
3. The precision machining process of the aluminum alloy plate and the automobile aluminum alloy structural member as claimed in claim 2, characterized in that: the heating temperature is 420-450 ℃, the preheating temperature is 450-460 ℃, and the preheating time is 40-80 minutes.
4. The precision machining process of the aluminum alloy plate and the automobile aluminum alloy structural member as claimed in claim 2, characterized in that: the temperature of the extrusion cylinder in the first step is 400-430 ℃, and the extrusion speed of the extrusion molding is 0.8-1.2 m/min.
5. The precision machining process of the aluminum alloy plate and the automobile aluminum alloy structural member as claimed in claim 2, characterized in that: the temperature of the cooling water tank in the second step is 30-60 ℃, and the speed of on-line quenching is 0.8-1.3 m/min.
6. The precision machining process of the aluminum alloy plate and the automobile aluminum alloy structural member as claimed in claim 2, characterized in that: the heating temperature of the artificial aging in the fourth step is 100-.
7. The precision machining process of the aluminum alloy plate and the automobile aluminum alloy structural member as claimed in claim 2, characterized in that: in the fifth step, the first-stage solid solution temperature is 450-460 ℃, the first-stage solid solution time is 30-120 minutes, and the heat preservation time is 40-60 minutes.
8. The precision machining process of the aluminum alloy plate and the automobile aluminum alloy structural member as claimed in claim 2, characterized in that: in the seventh step, the secondary solid solution temperature is 490-520 ℃, the secondary solid solution time is 30-110 minutes, and the heat preservation time is 20-100 minutes.
9. The precision machining process of the aluminum alloy plate and the automobile aluminum alloy structural member as claimed in claim 2, characterized in that: and in the seventh step, the air blowing is carried out for cooling for 15-20 minutes, the air pressure is reduced along with the reduction of the temperature of the aluminum alloy plate, and the air blowing is continued for 4-6 minutes when the aluminum alloy plate is cooled to the room temperature.
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| CN114798797A (en) * | 2022-03-18 | 2022-07-29 | 上海泽升汽车科技有限公司 | 6111 extrusion aluminum alloy plate punch forming method |
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| CN107937766A (en) * | 2017-12-25 | 2018-04-20 | 横琴国际知识产权交易中心有限公司 | A kind of aluminium alloy and its processing method |
| CN108385000A (en) * | 2018-02-09 | 2018-08-10 | 深圳市华加日西林实业有限公司 | The processing technology and application of aluminium alloy and aluminium alloy extrusions |
| CN108950440A (en) * | 2018-07-17 | 2018-12-07 | 苏州温锑姆精密机械有限公司 | Aluminium alloy plate processing technology |
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| KR20190045289A (en) * | 2016-09-30 | 2019-05-02 | 항저우 암페놀 피닉스 텔레콤 파츠 컴퍼니 리미티드 | Hinges for rotary parts and mobile terminals |
| KR102084377B1 (en) | 2016-09-30 | 2020-03-03 | 항저우 암페놀 피닉스 텔레콤 파츠 컴퍼니 리미티드 | Hinge and mobile terminal for rotating parts |
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