CN106513630A - Extrusion casting technology for magnesium alloy hub - Google Patents
Extrusion casting technology for magnesium alloy hub Download PDFInfo
- Publication number
- CN106513630A CN106513630A CN201610989659.3A CN201610989659A CN106513630A CN 106513630 A CN106513630 A CN 106513630A CN 201610989659 A CN201610989659 A CN 201610989659A CN 106513630 A CN106513630 A CN 106513630A
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- Prior art keywords
- magnesium alloy
- ranges
- hub
- extrusion casting
- mpa
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Forging (AREA)
Abstract
The invention discloses an extrusion casting technology for a magnesium alloy hub. The casting temperature of the technology ranges from 670 DEG C to 690 DEG C, the die preheating temperature ranges from 240 DEG C to 260 DEG C, the punch injection speed ranges from 0.14 m/s to 0.16 m/s, the extrusion casting pressure ranges from 60 MPa to 100 MPa, the pressurizing time ranges from 50 ms to 100 ms, and the holding pressure ranges from 75 MPa to 85 MPa. For the composition characteristic of a magnesium alloy, the specific technology conditions are selected, a magnesium alloy hub obtained through extrusion casting is small in weight and large in strength, and the service performance of the hub is achieved.
Description
Technical field
The present invention relates to casting technology field, more particularly to a kind of magnesium alloy hub Extrution casting technique.
Background technology
At present, the energy-saving world's vapour that has become rubs the main flow of development.For this purpose, golden, compound using magnesium platform on automobile
Material etc. is modern high to be mitigated vapour than performance materials and rubs the weight of structure, particularly high-speed moving part, and oneself becomes and improves automobile and move
The main material means of power performance and exhaust emission.Magnesium alloy possesses low price, height and subtracts than performance, the resisting fatigue of protrusion and damping
Shake anti-acoustic capability, is particularly suitable for making the boss material of car, light-duty vehicle, motorcycle.
China is the big country that motorcycle produces, uses and export, and is also becoming automobile production, is using big country.My field magnesium
Aboundresources, it is big tired to have become the production of former magnesium, but in default of magnesium platform gold production application technology, now the 80% of domestic former magnesium
As inexpensive raw material mountain pass.Gradually (each vapour that wheel hub is automobile, single casting weight is maximum on motorcycle, consumption is most
Car needs 5 wheel hubs, weight to reach 20-30kg, and each motorcycle needs two wheel hubs, weight to reach 4-8 kilogram).Such as domestic automobile,
Sizable application magnesium alloy on motorcycle, annual magnesium alloy demand are up to more than 150,000 tons, can reach 11.4 per annual value of production
Hundred million RMB or so.Therefore, existing aluminium alloy is substituted with magnesium alloy, produce satisfactory magnesium alloy hub, with weight
Big economic interests.
But existing aluminium alloy wheel hub production technology, due to aluminium alloy capability it is entirely different with Properties of Magnesium Alloy, the two nothing
Method is replaced and is used, therefore the casting technique of exploitation magnesium alloy hub is very necessary.
The content of the invention
It is an object of the invention to propose a kind of magnesium alloy hub Extrution casting technique, wheel hub military service performance is disclosure satisfy that.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of magnesium alloy hub Extrution casting technique, its pouring temperature are 670 DEG C -690 DEG C, and mold preheating temperature is 240
DEG C -260 DEG C, drift injection speed 0.14-0.16m/s, extrusion casint pressure are 60-100MPa, and pressing time is 50ms-
100ms, dwell pressure are 75-85MPa.
The height of mold temperature, directly influences the life-span of casting quality and casting mold.Mold preheating temperature is too low, cast
Aluminium alloy can be solidified after injection die cavity quickly, just form thicker crystallization duricrust, affect pressure effect before pressurization.Additionally,
Due also in metal thermograde increase so that foundry goods forms big column crystal, increases the defects such as cold shut.Mold preheating temperature
Height, can increase the thermal stress of casting mold, cause metal bonding with mold cavity surface, reduce mould life, while the demoulding can be brought difficult.
Therefore the characteristics of present invention is for magnesium alloy, sets mold preheating temperature as 240 DEG C -260 DEG C, preferably 250 DEG C.
Alloy pouring temperature has appreciable impact to metal forming.Alloy pouring temperature in extrusion casint should be reasonable
In the range of, as far as possible take low value.Because during using cast cold, the thermograde in alloy is relatively small, generation
Gas flow is less, and foundry goods contraction is may be reduced by casting solidification, the defects such as shrinkage cavity and porosity are reduced.Meanwhile, relatively low temperature can
Mould life is improved, splash and the fash of liquid metal is reduced, crystal grain thinning tissue is beneficial to certainly the improvement of casting quality and carries
Height, as extrusion casint is to solidify under high pressure, so have ready conditions realizing cast cold.If but pouring temperature is too low, now closing
Gold easily solidifies, and causes casting to be not fully filled.If temperature is too high, shrinkage cavity is easily produced, die life is also affected.
The present invention is based on above-mentioned consideration, selects pouring temperature to be 670 DEG C -690 DEG C, preferably 680 DEG C.
Component characteristic of the present invention for magnesium alloy, selects specific process conditions, the magnesium alloy wheel that extrusion casint is obtained
Hub is lightweight, powerful degree, meets the military service performance of wheel hub.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of magnesium alloy hub Extrution casting technique, its pouring temperature are 680 DEG C, and mold preheating temperature is 250 DEG C, drift
Injection speed 0.14m/s, extrusion casint pressure are 60MPa, and pressing time is 50msms, and dwell pressure is 75MPa.
Embodiment 2
A kind of magnesium alloy hub Extrution casting technique, its pouring temperature are 670 DEG C, and mold preheating temperature is 240 DEG C DEG C, punching
Head injection speed 0.16m/s, extrusion casint pressure is 100MPa, and pressing time is 100ms, and dwell pressure is 85MPa.
Jing embodiments 1-2 verify which fills, and type flow stream velocity is uniform, and filling mould states are good, complete to fill the foundry goods temperature after type
Degree is evenly distributed, and casting solidification is steadily rapid, completes solidification according to the order of design.Internal Quality of Cast is good, no significant defect.
Claims (1)
1. a kind of magnesium alloy hub Extrution casting technique, its pouring temperature are 670 DEG C -690 DEG C, mold preheating temperature is 240 DEG C -
260 DEG C, drift injection speed 0.14-0.16m/s, extrusion casint pressure are 60-100MPa, and pressing time is 50ms-100ms,
Dwell pressure is 75-85MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989659.3A CN106513630A (en) | 2016-11-10 | 2016-11-10 | Extrusion casting technology for magnesium alloy hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989659.3A CN106513630A (en) | 2016-11-10 | 2016-11-10 | Extrusion casting technology for magnesium alloy hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106513630A true CN106513630A (en) | 2017-03-22 |
Family
ID=58350943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610989659.3A Pending CN106513630A (en) | 2016-11-10 | 2016-11-10 | Extrusion casting technology for magnesium alloy hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106513630A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004269971A (en) * | 2003-03-10 | 2004-09-30 | Toyota Central Res & Dev Lab Inc | Aluminum alloy for casting, casting made of aluminum alloy and its production method |
| CN1699612A (en) * | 2004-05-19 | 2005-11-23 | 中国科学院金属研究所 | High strength and high toughness cast magnesium alloy and preparing process thereof |
| CN101210295A (en) * | 2006-12-26 | 2008-07-02 | 北京有色金属研究总院 | Method for processing magnesium alloy |
| US20110214832A1 (en) * | 2009-08-25 | 2011-09-08 | Tae-Soo Ha | Forging apparatus and forging method for rheocasting |
| CN102380600A (en) * | 2010-08-28 | 2012-03-21 | 王维涛 | Extruding and casting process of hub |
| CN202316886U (en) * | 2011-11-25 | 2012-07-11 | 任传峰 | Liquid-state mould forging magnesium alloy wheel hub mould |
| CN103203602A (en) * | 2013-04-15 | 2013-07-17 | 中国兵器工业第五二研究所 | Production method of magnesium alloy hub |
-
2016
- 2016-11-10 CN CN201610989659.3A patent/CN106513630A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004269971A (en) * | 2003-03-10 | 2004-09-30 | Toyota Central Res & Dev Lab Inc | Aluminum alloy for casting, casting made of aluminum alloy and its production method |
| CN1699612A (en) * | 2004-05-19 | 2005-11-23 | 中国科学院金属研究所 | High strength and high toughness cast magnesium alloy and preparing process thereof |
| CN101210295A (en) * | 2006-12-26 | 2008-07-02 | 北京有色金属研究总院 | Method for processing magnesium alloy |
| US20110214832A1 (en) * | 2009-08-25 | 2011-09-08 | Tae-Soo Ha | Forging apparatus and forging method for rheocasting |
| CN102380600A (en) * | 2010-08-28 | 2012-03-21 | 王维涛 | Extruding and casting process of hub |
| CN202316886U (en) * | 2011-11-25 | 2012-07-11 | 任传峰 | Liquid-state mould forging magnesium alloy wheel hub mould |
| CN103203602A (en) * | 2013-04-15 | 2013-07-17 | 中国兵器工业第五二研究所 | Production method of magnesium alloy hub |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |
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| WD01 | Invention patent application deemed withdrawn after publication |