CN106312018A - Process for superplasticity die forging of magnesium alloy hub - Google Patents
Process for superplasticity die forging of magnesium alloy hub Download PDFInfo
- Publication number
- CN106312018A CN106312018A CN201610989656.XA CN201610989656A CN106312018A CN 106312018 A CN106312018 A CN 106312018A CN 201610989656 A CN201610989656 A CN 201610989656A CN 106312018 A CN106312018 A CN 106312018A
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- alloy hub
- die forging
- hub
- carry out
- 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.)
- Pending
Links
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 36
- 238000005242 forging Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000032683 aging Effects 0.000 claims abstract description 7
- 239000006104 solid solution Substances 0.000 claims abstract description 6
- 238000000137 annealing Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims 1
- 238000010791 quenching Methods 0.000 abstract description 3
- 238000009864 tensile test Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002079 cooperative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
-
- 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
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
The invention discloses a process for superplasticity die forging of a magnesium alloy hub. The process comprises the steps of causing magnesium alloy blank to undergo homogenizing annealing, performing superplasticity die forging forming in an isothermal combination forming die, performing room temperature cooling after the forging, performing heating solid solution water quenching at 380-420 DEG C, performing artificial aging treatment at 120-220 DEG C, and then performing precision machining, micro-arc oxidation and coating to obtain the magnesium alloy hub. After the magnesium alloy hub undergoes T6 heat treatment, tensile strength of each component exceeds 340 MPa, the yield strength exceeds 218 MPa, the average elongation is 12.8%, and it is proved in -75 DEG C to 260 DEG C tensile tests that the magnesium alloy hub is good in high-and-low temperature performance.
Description
Technical field
The present invention relates to technical field of forging, particularly relate to the superplastic die forging technique of a kind of magnesium alloy hub.
Background technology
Aluminium alloy relies on self plurality of advantages, at present at vehicle wheel hub, is particularly used widely on car hub.With
It is compared, and magnesium alloy the most more has advantages for development: (1) light weight, density is about 1.78g/cm3, only the 64% of aluminium alloy wheel hub；
(2) specific strength, higher than height, can meet the use requirement of automotive hub；(3) there is higher elastic modelling quantity, anti-seismic performance
Good, it is more suitable for during as wheel hub on rugged road surface travelling.Along with Oil-saving for Modern Motor Vehicles reduce discharging require improve constantly,
Safety and the increasingly strict and light-weighted development trend of vehicle of environmental regulation, replacing aluminium alloy with magnesium alloy has become automotive wheels
The developing direction of hub.
At present, magnesium alloy hub mainly uses casting forming, but the shrinkage cavity produced due to casting technique, the defect such as loose
Reduce the mechanical property of part, cause the application of magnesium alloy component to be restricted.Accordingly, it would be desirable to new technology improves product
Can so that it is be widely used in automobile industry.
Summary of the invention
It is an object of the invention to propose the superplastic die forging technique of a kind of magnesium alloy hub, it is possible to make magnesium alloy hub
There is higher intensity, and there is good high temperature performance.
For reaching this purpose, the present invention by the following technical solutions:
The superplastic die forging technique of a kind of magnesium alloy hub, magnesium alloy blank is carried out homogenizing annealing process, is waiting by it
Carrying out superplastic die forging molding in the combined shaping mold of temperature, after forging, room temperature cooling, heats then at 380 DEG C-420 DEG C
Solid solution shrend, then at 120 DEG C-220 DEG C, carry out artificial aging process, carry out Precision Machining, differential arc oxidation, application subsequently,
To magnesium alloy hub.
Preferably, the described heating solid solution shrend time is 4-12 hour, preferably 6-10 hour.
Preferably, the described artificial aging process time is 8-24 hour, preferably 12-18 hour.
According to " riding wheel performance requirement and test method " (GB/T15334-2005) and " riding wheel impact test side
Method " (GB/T15704-1995) national standard, the magnesium alloy hub obtained is carried out mechanical property Characteristics Detection.Test uses state
The standard tensile test that mark GB/T228-2002 specifies, test specimen thickness is 2mm.
Test proves, after superplastic die forging molding and heat treatment, magnesium alloy strength improves 60%, and plasticity is significantly
Improve.Illustrate that the superplastic die forging molding of the present invention creates cooperative effect with specific Technology for Heating Processing.
Being cut by magnesium alloy hub, through horizontal bar with directly to muscle tensile test, tensile strength meansigma methods reaches 340MPa, and
The hot strength meansigma methods being cast the wheel hub obtained in contrast can only achieve 245MPa, and percentage elongation meansigma methods reaches
12.8%, its tensile strength and yield strength, elongation at break are more than cast magnesium alloy wheel hub and cast magnesium alloy aluminum alloy wheel
Hub is high.
Owing to wheel hub uses under natural environment, stand the variations in temperature of winter alternates with summer, therefore, to its low temperature with high temperatures
Can also there is higher requirement.It is demonstrated experimentally that the low temperature of described magnesium alloy hub, elevated temperature strength and plastic property are excellent, high temperature is not
Notable softening, low temperature is the most brittle, can meet the use of various extreme natural environment.
The magnesium alloy hub that the present invention obtains, after T6 heat treatment, each position tensile strength surpasses more than 340MPa, yield strength
Cross 218MPa, average elongation 12.8%.In-75 DEG C to 260 degree Celsius tension tests, prove that its high temperature performance is good.
Detailed description of the invention
Technical scheme is further illustrated below by detailed description of the invention.
Embodiment 1
The superplastic die forging technique of a kind of magnesium alloy hub, magnesium alloy blank is carried out homogenizing annealing process, is waiting by it
The combined shaping mold of temperature carries out superplastic die forging molding, room temperature cooling after forging, then carry out heating solid solution water at 380 DEG C
Quench 5 hours, then at 120 DEG C, carry out artificial aging process 12 hours, carry out Precision Machining, differential arc oxidation, application subsequently, obtain
Magnesium alloy hub.
Embodiment 2
The superplastic die forging technique of a kind of magnesium alloy hub, magnesium alloy blank is carried out homogenizing annealing process, is waiting by it
The combined shaping mold of temperature carries out superplastic die forging molding, room temperature cooling after forging, then carry out heating solid solution water at 420 DEG C
Quench 10 hours, then at 220 DEG C, carry out artificial aging process 18 hours, carry out Precision Machining, differential arc oxidation, application subsequently,
To magnesium alloy hub.
The magnesium alloy hub that embodiment 1-2 obtains, after T6 heat treatment, each position tensile strength is more than 340MPa, and surrender is strong
Degree is more than 218MPa, average elongation 12.8%.In-75 DEG C to 260 degree Celsius tension tests, prove that its high temperature performance is good
Good.
Claims (3)
1. a superplastic die forging technique for magnesium alloy hub, magnesium alloy blank is carried out homogenizing annealing process by it, at isothermal
Combined shaping mold in carry out superplastic die forging molding, after forging room temperature cooling, then carry out adding thermosetting at 380 DEG C-420 DEG C
Molten shrend, then at 120 DEG C-220 DEG C, carry out artificial aging process, carry out Precision Machining, differential arc oxidation, application subsequently, obtain
Magnesium alloy hub.
2. the superplastic die forging technique of magnesium alloy hub as claimed in claim 1, it is characterised in that described heating solid solution shrend
Time is 4-12 hour, preferably 6-10 hour.
3. the superplastic die forging technique of magnesium alloy hub as claimed in claim 1 or 2, it is characterised in that described artificial aging
The process time is 8-24 hour, preferably 12-18 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989656.XA CN106312018A (en) | 2016-11-10 | 2016-11-10 | Process for superplasticity die forging of magnesium alloy hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989656.XA CN106312018A (en) | 2016-11-10 | 2016-11-10 | Process for superplasticity die forging of magnesium alloy hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106312018A true CN106312018A (en) | 2017-01-11 |
Family
ID=57816826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610989656.XA Pending CN106312018A (en) | 2016-11-10 | 2016-11-10 | Process for superplasticity die forging of magnesium alloy hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106312018A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857417A (en) * | 2021-09-03 | 2021-12-31 | 中信戴卡股份有限公司 | Spinning process of magnesium alloy hub |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63183104A (en) * | 1987-01-22 | 1988-07-28 | Agency Of Ind Science & Technol | Method for superplastic warm die pack forging of high-strength hard-to-work material |
| US4867807A (en) * | 1985-12-05 | 1989-09-19 | Agency Of Industrial Science & Technology, Ministry Of International Trade & Industry | Method for superplastic warm-die and pack forging of high-strength low-ductility material |
| CN1456401A (en) * | 2003-06-23 | 2003-11-19 | 北京科技大学 | Amorphous alloy precision parts superplastic drop-forging shaper and method thereof |
| CN202278134U (en) * | 2011-10-25 | 2012-06-20 | 机械科学研究院浙江分院有限公司 | Superplastic forming system for titanium-alloy turbine blades |
| CN105274457A (en) * | 2015-10-23 | 2016-01-27 | 成都天智轻量化科技有限公司 | 3D super-plasticizing treatment method and superplasticity precision shaping method for magnesium alloy |
-
2016
- 2016-11-10 CN CN201610989656.XA patent/CN106312018A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867807A (en) * | 1985-12-05 | 1989-09-19 | Agency Of Industrial Science & Technology, Ministry Of International Trade & Industry | Method for superplastic warm-die and pack forging of high-strength low-ductility material |
| JPS63183104A (en) * | 1987-01-22 | 1988-07-28 | Agency Of Ind Science & Technol | Method for superplastic warm die pack forging of high-strength hard-to-work material |
| CN1456401A (en) * | 2003-06-23 | 2003-11-19 | 北京科技大学 | Amorphous alloy precision parts superplastic drop-forging shaper and method thereof |
| CN202278134U (en) * | 2011-10-25 | 2012-06-20 | 机械科学研究院浙江分院有限公司 | Superplastic forming system for titanium-alloy turbine blades |
| CN105274457A (en) * | 2015-10-23 | 2016-01-27 | 成都天智轻量化科技有限公司 | 3D super-plasticizing treatment method and superplasticity precision shaping method for magnesium alloy |
Non-Patent Citations (1)
| Title |
|---|
| 权高峰等: "超塑性模锻镁合金汽车轮毂应用研究", 《兵器材料科学与工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857417A (en) * | 2021-09-03 | 2021-12-31 | 中信戴卡股份有限公司 | Spinning process of magnesium alloy hub |
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| PB01 | Publication | ||
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Application publication date: 20170111 |