CN110560577A - magnesium alloy part and preparation method thereof - Google Patents
magnesium alloy part and preparation method thereof Download PDFInfo
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- CN110560577A CN110560577A CN201910818344.6A CN201910818344A CN110560577A CN 110560577 A CN110560577 A CN 110560577A CN 201910818344 A CN201910818344 A CN 201910818344A CN 110560577 A CN110560577 A CN 110560577A
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- magnesium alloy
- base material
- preset temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The application provides a preparation method of a magnesium alloy part, which comprises the following steps: uniformly heating the magnesium alloy substrate to a first preset temperature; uniformly heating the die to a second preset temperature, wherein the first preset temperature and the second preset temperature are both less than 300 ℃; positioning the magnesium alloy substrate within the mold; and performing punch forming on the magnesium alloy substrate in the die to obtain the magnesium alloy part. The application also correspondingly provides a magnesium alloy part which is prepared by adopting the method. The magnesium alloy part prepared by the method has high mechanical strength and can not crack locally.
Description
Technical Field
The application relates to the technical field of metal processing, in particular to a magnesium alloy part and a preparation method thereof.
background
In recent years, the demand for light materials is increasing, magnesium alloy is the lightest metal structural material in practical engineering application, has the advantages of small specific gravity, high specific strength and specific rigidity, good heat conduction and electrical conductivity, good cutting processability, excellent damping property and electromagnetic shielding property, strong shock absorption, easy processing forming and recycling and the like, and also has irreplaceable excellent properties of materials such as aluminum, steel and the like, so the magnesium alloy is widely applied to industries such as automobiles, electronics, communication and the like and is known as the green engineering material in the 21 st century.
The common processing mode of the magnesium alloy base material is punch forming, but the stretching position of the magnesium alloy base material is easy to crack in the stamping process of the existing magnesium alloy base material, and the physical property of the formed magnesium alloy base material is influenced.
Disclosure of Invention
In view of the above, there is a need for a magnesium alloy part and a method for manufacturing the same to solve the problem.
The first aspect of the application provides a method for preparing a magnesium alloy part, which comprises the following steps: uniformly heating the magnesium alloy substrate to a first preset temperature; uniformly heating the die to a second preset temperature, wherein the first preset temperature and the second preset temperature are both less than 300 ℃; positioning the magnesium alloy substrate within the mold; and performing punch forming on the magnesium alloy substrate in the die to obtain the magnesium alloy part.
Further, the first preset temperature is 240-260 ℃.
Further, the second preset temperature is 240-270 ℃.
Further, the second preset temperature is higher than the first preset temperature, and the temperature difference between the second preset temperature and the first preset temperature is 5-10 ℃.
Further, the mold comprises a male mold and a female mold, the male mold comprises a containing cavity, and the method for positioning the magnesium alloy substrate in the mold comprises the following steps: positioning the magnesium alloy base material in the containing cavity.
Further, when the magnesium alloy base material in the die is subjected to punch forming, the temperature of the master die is maintained to be 240-270 ℃.
Further, the step of press-forming the magnesium alloy substrate in the mold includes:
And sequentially performing one of stretching, bending and punching treatment on the base material in the die.
Further, the metal elements in the magnesium alloy substrate include aluminum, zinc, manganese, iron, silicon, copper, nickel and magnesium.
Further, the magnesium accounts for 86.4-92.92% of the total mass of the magnesium alloy base material, the aluminum accounts for 6.64-11.64% of the total mass of the magnesium alloy base material, the zinc accounts for 0.32-1.2% of the total mass of the magnesium alloy base material, the manganese accounts for 0.12-0.6% of the total mass of the magnesium alloy base material, the iron accounts for 0-0.006% of the total mass of the magnesium alloy base material, the silicon accounts for 0-0.12% of the total mass of the magnesium alloy base material, the copper accounts for 0-0.036% of the total mass of the magnesium alloy base material, and the nickel accounts for 0-0.0024% of the total mass of the magnesium alloy base material.
The second aspect of the application provides a magnesium alloy part, and the magnesium alloy part is prepared by adopting the method.
According to the preparation method of the magnesium alloy part, the magnesium alloy base material is uniformly heated to the first preset temperature, the die is uniformly heated to the second preset temperature, and the temperature of the heated magnesium alloy base material and the temperature of the heated die are both less than 300 ℃, so that the mechanical strength of the heated magnesium alloy base material cannot be influenced. And the magnesium alloy substrate and the die are uniformly heated, so that the problem of local cracking during punch forming can be solved due to the fact that the magnesium alloy substrate is locally heated unevenly.
Drawings
Fig. 1 is a flowchart of a method for producing a magnesium alloy part according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a magnesium alloy substrate and a first position of a mold according to an embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of a magnesium alloy substrate and a second position of a mold according to an embodiment of the present disclosure.
Description of the main elements
| Magnesium alloy substrate | 10 |
| Die set | 20 |
| Male die | 21 |
| Containing cavity | 211 |
| Forming bulge | 212 |
| Movable column | 213 |
| Positioning plate | 214 |
| Female die | 22 |
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the present application can be more clearly understood, a detailed description of the present application will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and the described embodiments are merely a subset of the embodiments of the present application and are not all embodiments. 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 application.
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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Referring to fig. 1, fig. 1 is a flow chart of a method for manufacturing a magnesium alloy part according to an embodiment of the present application, including the following steps:
Step S110: the magnesium alloy substrate 10 is uniformly heated to a first predetermined temperature.
Specifically, the magnesium alloy substrate 10 is manually or mechanically removed and placed in a preheating device to be uniformly heated to a first predetermined temperature.
Wherein the thickness of the magnesium alloy substrate 10 is 0.6mm-10 mm. In this embodiment, 0.8mm is preferred.
The metal elements in the magnesium alloy substrate 10 include magnesium, aluminum, zinc, manganese, and at least one of iron, silicon, copper, and nickel.
The magnesium accounts for 86.4-92.92% of the total mass of the magnesium alloy base material. The aluminum accounts for 6.64-11.64% of the total mass of the magnesium alloy base material. The zinc accounts for 0.32-1.2% of the total mass of the magnesium alloy base material. The manganese accounts for 0.12 to 0.6 percent of the total mass of the magnesium alloy base material. The iron accounts for 0-0.006% of the total mass of the magnesium alloy base material. The silicon accounts for 0-0.12% of the total mass of the magnesium alloy base material. The copper accounts for 0-0.036% of the total mass of the magnesium alloy base material. The nickel accounts for 0-0.0024% of the total mass of the magnesium alloy base material.
in this embodiment, the first preset temperature ranges from 240 ℃ to 260 ℃. In this embodiment, the preheating device is a pneumatic heater. It is understood that in other embodiments, the preheating device may also be a preheating furnace.
Step S120: and uniformly heating the mold 20 to a second preset temperature, wherein both the first preset temperature and the second preset temperature are less than 300 ℃.
Specifically, please refer to fig. 2 and 3. Fig. 2 is a schematic structural view of the magnesium alloy substrate 10 and the mold 20 before press forming. Fig. 3 is a schematic structural view of the magnesium alloy substrate 10 after press forming and the die 20. The mold 20 includes a male mold 21 and a female mold 22 cooperating with the male mold 21. The side edges of the male mold 21 and the female mold 22 are respectively provided with a plurality of heating members (not shown) and temperature sensing members (not shown), the heating members are used for heating the male mold 21 and the female mold 22 to a second preset temperature, and the temperature sensing members are used for sensing the temperatures of the male mold 21 and the female mold 22. In this embodiment, the second preset temperature ranges from 240 ℃ to 270 ℃. The second predetermined temperature is higher than the first predetermined temperature, so as to avoid the temperature of the magnesium alloy substrate 10 or the mold 20 from being changed due to external influences. In the present embodiment, the heating member 30 includes, but is not limited to, a heating sheet, a heating wire, and an electric heating rod, and the temperature sensing member includes, but is not limited to, a temperature sensing rod, and a temperature sensor. In this embodiment, the temperature difference between the second preset temperature and the first preset temperature is 5 ℃ to 10 ℃.
Step S130: the magnesium alloy substrate 10 is positioned within a mold 20.
specifically, the male mold 21 includes a receiving cavity 211, a forming protrusion 212 is disposed in the middle of the receiving cavity 211, two opposite sides of the forming protrusion 212 are respectively disposed with a movable column 213 capable of moving toward or away from the female mold 22, a positioning plate 214 is disposed at one end of each movable column 213 close to the female mold 22, and the magnesium alloy substrate 10 is positioned on the positioning plate 214.
When in use, the mold 20 is fixed, wherein the female mold 22 is positioned at the upper side, and the male mold 21 is positioned at the lower side; then, the edge of the magnesium alloy substrate 10 heated to the first predetermined temperature is positioned on the positioning plate 214 in the receiving cavity 211.
Step S140: and (3) performing punch forming on the magnesium alloy substrate 10 in the die 20 to obtain the magnesium alloy part.
specifically, the female die 22 is driven by a punching device to move toward the magnesium alloy substrate 10 positioned on the male die 21, and at this time, the edge of the magnesium alloy substrate 10 and the positioning plate 214 move in a direction away from the male die 21 under the pressing of the male die 21 until the magnesium alloy substrate 10 is pressed onto the outer peripheral surface of the forming protrusion 212, and is formed into a desired shape. Wherein, the stamping equipment is a servo punch press, the pressure in the pressing process is 850KN-1350KN, and the magnesium alloy base material 10 can be sequentially subjected to one of stretching, extruding R angle (bending) and punching treatment.
In this embodiment, the number of the punching apparatuses is plural, and the magnesium alloy base material 10 is subjected to the drawing, the R-angle extrusion (bending), and the punching process.
In the present embodiment, the punching depth of the magnesium alloy base material 10 is 0.66 mm. During the stamping process, the temperature of the master 22 is maintained to 240-270 ℃. The magnesium alloy substrate 10 is maintained at a constant temperature, preferably 250 ℃, by means of heat conduction, and the mechanical strength of the magnesium alloy part obtained at the temperature is good. And the magnesium alloy base material 10 is maintained at a constant temperature, so that the surface of the magnesium alloy base material 10 is prevented from generating temperature unevenness, and the magnesium alloy base material 10 is locally cracked during molding.
In the present embodiment, the pressing device drives the mother mold 22 to move at a first speed, a second speed, a third speed and a fourth speed. The first speed is a moving speed in the process that the female die 22 starts to move to a preset distance from the magnesium alloy substrate 10 on the male die 21, at this time, the angle of the machine is 145 degrees, when the first speed is transited to the second speed, pressure maintaining needs to be performed on the stamping equipment, and the pressure maintaining time is 12 seconds. The second speed is a moving speed of the master mold 22 in a process from a predetermined distance from the magnesium alloy substrate 10 to the beginning of contacting the magnesium alloy substrate 10, the angle of the machine is adjusted to 180 degrees at this time, and when the second speed is shifted to the third speed, the pressure of the stamping equipment needs to be maintained for 2 seconds. The third speed is a moving speed in the process that the mother die 22 starts to contact the magnesium alloy substrate 10 to press the magnesium alloy substrate 10 onto the outer peripheral surface of the forming protrusion 212. The fourth speed is a moving speed of the master mold 22 in the process of moving to the initial position. The first moving speed is greater than the second moving speed, the second moving speed is greater than the third moving speed, and the first moving speed is less than the fourth moving speed. The moving time of the master 22 in the entire moving process is 30 seconds to 35 seconds.
In this embodiment, after the punch forming, the magnesium alloy substrate 10 may be sequentially subjected to CNC processing, grinding, formation, encapsulation, secondary CNC processing, secondary grinding, secondary formation, coating and assembling processes according to actual needs.
According to the preparation method of the magnesium alloy part, the magnesium alloy base material 10 is uniformly heated to the first preset temperature, and the mold 20 is uniformly heated to the second preset temperature, so that the temperature of the heated magnesium alloy base material 10 and the temperature of the heated mold 20 are both less than 300 ℃, and the mechanical strength of the heated magnesium alloy base material 10 cannot be influenced. Moreover, the magnesium alloy substrate 10 and the mold 20 are heated uniformly, so that the problem of local cracking during the press forming due to local uneven heating of the magnesium alloy substrate 10 is avoided.
while the preferred embodiments of the present application have been illustrated and described, it will be appreciated by those skilled in the art that various changes and modifications may be made without departing from the true scope of the application. Therefore, it is intended that the application not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this application, but that the application will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The preparation method of the magnesium alloy part is characterized by comprising the following steps:
Uniformly heating the magnesium alloy substrate to a first preset temperature;
Uniformly heating the die to a second preset temperature, wherein the first preset temperature and the second preset temperature are both less than 300 ℃;
Positioning the magnesium alloy substrate within the mold;
And performing punch forming on the magnesium alloy substrate in the die to obtain the magnesium alloy part.
2. The method for producing a magnesium alloy part according to claim 1, wherein the first preset temperature is 240 ℃ to 260 ℃.
3. The method for producing a magnesium alloy part according to claim 1, wherein the second preset temperature is 240 ℃ to 270 ℃.
4. the method for producing a magnesium alloy part according to claim 1, wherein the second preset temperature is higher than the first preset temperature, and a temperature difference between the second preset temperature and the first preset temperature is 5 ℃ to 10 ℃.
5. The method for preparing a magnesium alloy part according to claim 1, wherein the mold comprises a male mold and a female mold, the male mold comprises an accommodating cavity, and the method for positioning the magnesium alloy substrate in the mold comprises: positioning the magnesium alloy base material in the containing cavity.
6. The method for producing a magnesium alloy part according to claim 5, wherein the temperature of the master mold is maintained at 240 ℃ to 270 ℃ when the magnesium alloy base material in the mold is subjected to the press forming.
7. The method for producing a magnesium alloy part according to claim 1, wherein the step of press-forming the magnesium alloy base material in the mold comprises:
And performing one of stretching, bending and punching on the base material in the die.
8. The method for producing a magnesium alloy part according to claim 1, wherein the metal element in the magnesium alloy base material includes magnesium, aluminum, zinc, manganese, and at least one of iron, silicon, copper, and nickel.
9. The method for producing a magnesium alloy part according to claim 8, wherein the magnesium accounts for 86.4 to 92.92% of the total mass of the magnesium alloy base material, the aluminum accounts for 6.64 to 11.64% of the total mass of the magnesium alloy base material, the zinc accounts for 0.32 to 1.2% of the total mass of the magnesium alloy base material, the manganese accounts for 0.12 to 0.6% of the total mass of the magnesium alloy base material, the iron accounts for 0 to 0.006% of the total mass of the magnesium alloy base material, the silicon accounts for 0 to 0.12% of the total mass of the magnesium alloy base material, the copper accounts for 0 to 0.036% of the total mass of the magnesium alloy base material, and the nickel accounts for 0 to 0.0024% of the total mass of the magnesium alloy base material.
10. A magnesium alloy part characterized in that it is produced by the method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818344.6A CN110560577A (en) | 2019-08-30 | 2019-08-30 | magnesium alloy part and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910818344.6A CN110560577A (en) | 2019-08-30 | 2019-08-30 | magnesium alloy part and preparation method thereof |
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| CN110560577A true CN110560577A (en) | 2019-12-13 |
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| CN201910818344.6A Pending CN110560577A (en) | 2019-08-30 | 2019-08-30 | magnesium alloy part and preparation method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1507968A (en) * | 2002-12-18 | 2004-06-30 | 中国科学院金属研究所 | Magnesium alloy plate working method and special apparatus |
| CN101311284A (en) * | 2007-05-24 | 2008-11-26 | 鸿富锦精密工业（深圳）有限公司 | Magnesium alloy and magnesium alloy thin material |
| CN101633020A (en) * | 2009-07-30 | 2010-01-27 | 天津三星光电子有限公司 | Processing technique for manufacturing housing of digital camera by magnesium alloy stamping part |
| CN101886199A (en) * | 2010-06-28 | 2010-11-17 | 无锡市闽仙汽车电器有限公司 | Magnesium alloy formula of starter housing |
| CN102350456A (en) * | 2011-08-05 | 2012-02-15 | 北京广灵精华科技有限公司 | Processing method of magnesium alloy slab |
| CN102430652A (en) * | 2011-11-29 | 2012-05-02 | 南车洛阳机车有限公司 | Composite mould for machining parts such as short flanged washers |
| CN103212617A (en) * | 2013-04-18 | 2013-07-24 | 重庆市科学技术研究院 | Automatic production method of magnesium alloy plate in hot stamping forming mode |
| CN106544106A (en) * | 2016-11-03 | 2017-03-29 | 湖南航天新材料技术研究院有限公司 | A kind of stamping mold is with lubricator and magnesium alloy punched moulding process |
| CN107790539A (en) * | 2017-10-26 | 2018-03-13 | 杨晓艳 | A kind of magnesium alloy punched technique |
-
2019
- 2019-08-30 CN CN201910818344.6A patent/CN110560577A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1507968A (en) * | 2002-12-18 | 2004-06-30 | 中国科学院金属研究所 | Magnesium alloy plate working method and special apparatus |
| CN101311284A (en) * | 2007-05-24 | 2008-11-26 | 鸿富锦精密工业（深圳）有限公司 | Magnesium alloy and magnesium alloy thin material |
| CN101633020A (en) * | 2009-07-30 | 2010-01-27 | 天津三星光电子有限公司 | Processing technique for manufacturing housing of digital camera by magnesium alloy stamping part |
| CN101886199A (en) * | 2010-06-28 | 2010-11-17 | 无锡市闽仙汽车电器有限公司 | Magnesium alloy formula of starter housing |
| CN102350456A (en) * | 2011-08-05 | 2012-02-15 | 北京广灵精华科技有限公司 | Processing method of magnesium alloy slab |
| CN102430652A (en) * | 2011-11-29 | 2012-05-02 | 南车洛阳机车有限公司 | Composite mould for machining parts such as short flanged washers |
| CN103212617A (en) * | 2013-04-18 | 2013-07-24 | 重庆市科学技术研究院 | Automatic production method of magnesium alloy plate in hot stamping forming mode |
| CN106544106A (en) * | 2016-11-03 | 2017-03-29 | 湖南航天新材料技术研究院有限公司 | A kind of stamping mold is with lubricator and magnesium alloy punched moulding process |
| CN107790539A (en) * | 2017-10-26 | 2018-03-13 | 杨晓艳 | A kind of magnesium alloy punched technique |
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