CN1507970A - Magnesium alloy hub pressure casting apparatus and method thereof - Google Patents
Magnesium alloy hub pressure casting apparatus and method thereof Download PDFInfo
- Publication number
- CN1507970A CN1507970A CNA021358850A CN02135885A CN1507970A CN 1507970 A CN1507970 A CN 1507970A CN A021358850 A CNA021358850 A CN A021358850A CN 02135885 A CN02135885 A CN 02135885A CN 1507970 A CN1507970 A CN 1507970A
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- pressure
- pressure casting
- casting
- alloy hub
- 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.)
- Granted
Links
Landscapes
- Forging (AREA)
Abstract
The present invention relates to a magnesium alloy hub pressure casting equipment and its method. Said equipment comprises liquor transfer pump for providing form-charging power for molten magnesium alloy, running channel system, die assembly and pressure casting machine. The liquor transfer pump of running channel system is connected with lower die, and its pressure casting method includes the following steps: making the qualified molten magnesium alloy obtain form-charging power by means of liquor transfer pump driving, and making the molten magnesium alloy be fed into die cavity in stable and controllable speed, and be solidified and formed under the action of 0.1-1 MPa pressure.
Description
Technical field
The present invention relates to the compression casting field, specifically a kind of pressure casting apparatus and method thereof of producing magnesium alloy hub.
Background technology
We know, the reserves of the human utilizable energy of occurring in nature are limited, along with mankind's activity increasing to energy resource consumption, the human existence of having recognized energy crisis.Therefore, the mankind press for the consumption of reduction to the energy.For this reason, more and more stronger to the light-weighted requirement of automobile, to reduce consumption to the energy.Magnesium alloy will become the light-weighted ideal material of automobile because density is low, reserves enrich, be easy to advantages such as shaping and recyclable utilization again.And magnesium alloy auto hub to be magnesium alloy be applied on the automobile, realize typical case's representative that loss of weight is energy-conservation.
Because physics, the metallurgy characteristic of magnesium alloy are limit, the Perfected process for preparing magnesium alloy member, particularly Mg alloy thin wall spare at present is that compression casting is shaped.In the compression casting process, often occur filling that type is imperfect, defective such as shrinkage cavity, cold shut, hot tearing or draw.A kind of improved magnesium alloy member pressure casting method and metal mould device have been proposed among the Chinese patent CN1276276, metal mould device is to be applicable to the die casting of magnesium alloy or metal injection molded metal mould device, it is, if several cast gates, from down gate to each cast gate direct runner is set, and with the non-gate portions distance between adjacent gate, go up the unallowed situation except that the goods design, be made as below the 10mm.The pressure casting method of this metal mould device, effective for casting thin-wall, particularly for following casting thin-wall of 1.5mm or siliceous, rare earth element, the alloy casting of calcium effectively, particularly to following casting thin-wall of this 1.5mm or siliceous, rare earth element, the alloy of calcium is cast with that usefulness is enough stably to obtain not having casting lap, face crack with high-quality, fill bad, the die cast product of metal pattern scab.Said method can improve casting quality to a great extent, improves product percent of pass, but still is difficult to percent defective is controlled at reduced levels.Especially for picture this class of wheel hub heavy castings very high to performance requirement, former cast moulding method is difficult to satisfy the double requirements of performance and production cost especially.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, start with from the key that magnesium alloy pressure-casting is shaped, provide that a kind of structure is reasonable, easy for operation, liquation flows steadily, compression casting part quality height, percent defective are low, the magnesium alloy hub pressure casting apparatus and the method thereof of no hot tearing, draw defective.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of magnesium alloy hub pressure casting apparatus, it is characterized in that: be included as the magnesium alloy liquation infusion pump, runner system, mould, the die casting machine that fills type power is provided, the woven hose of runner system links to each other with counterdie.
The compression casting method of a kind of magnesium alloy hub of the present invention is characterized in that: qualified magnesium alloy liquation is driven acquisition by infusion pump fill type power, and charge into mold cavity with the speed of stable and controllable, solidification forming under the effect of 0.1～1MPa pressure.
The present invention is owing to adopt above-mentioned pressure casting apparatus and method, and against existing technologies, its device construction is reasonable, easy for operation, liquation flows steadily, and compression casting part quality height, percent defective are low, no hot tearing, draw defective.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
1. die casting machine movable pressing boards among the figure, 2. patrix, 3. side form, 4. counterdie, 5. mold platform, 6. woven hose, 7. holding furnace, 8. infusion pump, 9. woven hose, 10. smelting furnace, 11. infusion pumps.
The specific embodiment
As can be seen from Figure 1, the invention provides a kind of device that adopts the magnesium alloy liquation by compression casting production magnesium alloy hub, be included as the magnesium alloy liquation infusion pump, runner system and mould, the die casting machine that fills type power is provided.Magnesium alloy is injected in the holding furnace 7 after the heating melting.Holding furnace 7 should have corresponding anti-oxidation measure, seals such as container, even also is furnished with vacuum acquiring system and inert gas aerating device; Holding furnace 7 can not seal yet, and in this case, need cover one deck protective agent at Mg alloy surface, in case oxidation and burning.Magnesium alloy liquation in the holding furnace 7 is transported in the woven hose 6 by infusion pump 8, enters in patrix 2, side form 3 and the counterdie 4 formed die cavities again.Woven hose 6 links to each other with counterdie 4.The structure of mold cavity at first depends on the shape of part, will consider also that on this basis the magnesium alloy flow behavior structurally does some optimization processes.The flow of infusion pump 8 and adjustable in pressure, in the present invention, infusion pump 8 offers the pressure of magnesium alloy liquation 0.05～1MPa.The process structure of die cavity is vital for the quality that improves magnesium alloy member, and this just requires to design rational cavity structure; On the other hand, the flow performance of magnesium alloy liquation in mold cavity is subjected to the influence of technological parameter, and be also most important for the quality of magnesium alloy member.Magnesium alloy flowing in mold cavity is steady as far as possible, reduces its turbulence level to greatest extent, with anti-roll gas, fill defectives such as type deficiency, shrinkage cavity, hot tearing or draw, cold shut and produce.The present invention allows magnesium alloy fill type with suitable pressure and speed for fear of above-mentioned defective, guarantees to generate high-quality die casting.Magnesium alloy is in cavity filling process, if speed is too fast, pressure is too big, occurs defectives such as volume gas easily.According to technology provided by the invention, it is preferable that magnesium alloy fills the type effect with the pressure of 0.05～1MPa.Fill type and finish, magnesium alloy begins solidification shrinkage, and boundary member solidifies earlier, so and mould separating, heat transfer is affected, and causes the tissue odds of part different parts even, thereby causes defective and reduction part anti-fatigue performances such as hot tearing, draw easily.The present invention continues to exert pressure after the magnesium alloy liquation is full of die cavity in order to eliminate this phenomenon, and its pressure limit is 0.1～1Mpa.Magnesium alloy sheds pressure after solidifying fully, helps guaranteeing the homogenising of part each several part tissue like this, avoids defectives such as hot tearing, draw.
In the invention process, need carry out preheating to mould.Mold preheating temperature is if be lower than 120 ℃, occurs cold shut easily and fills defectives such as type is discontented; Mold preheating temperature is if be higher than 480 ℃, the preheating device complexity, break down easily, defectives such as thick appear organizing in foundry goods easily.In the present invention, the preheat temperature scope of mould remain on 120～480 ℃ more satisfactory.
In order to realize the smooth demoulding, die casting front mold inner surface spraying releasing agent is necessary, and releasing agent can adopt materials such as waterglass, silica gel, talcum powder, zinc oxide, magnesia.
In implementation process of the present invention, the air pressure in the die cavity can be identical with atmospheric pressure, and promptly the mold cavity internal pressure is 1 atmospheric pressure before die casting.But for the die casting that occurs defective easily, preferably the air pressure in the die cavity is become negative pressure,, can further reduce defective like this, improve the quality and the qualification rate of die casting promptly less than an atmospheric pressure.The method that obtains negative pressure is to adopt known vacuum acquisition technology, will add a valve in this case on woven hose, to prevent magnesium alloy liquation in the process that obtains negative pressure because pressure differential enters in the mold cavity prematurely.
Embodiment 1
Pure magnesium ingot, Al, Zn and raw materials such as the intermediate alloy heating that contains elements such as Mn, RE are smelted into insulation in holding furnace 7 behind the qualified liquation.With mould and die preheating to 280 ℃ and with its inner surface spraying one deck releasing agent, start infusion pump 8, under the pressure effect of 0.05～1MPa, make liquation fill type with steady controlled speed, strengthen infusion pump power and make it to provide the pressure of 0.1～1MPa to put on the liquation after die cavity is full of, the magnesium alloy in die cavity is finished and is solidified.
Embodiment 2
With pure magnesium ingot, Al, Zn and contain Mn, in smelting furnace 10, carry out melting behind the feed proportionings such as intermediate alloy of elements such as RE, by infusion pump 11 liquation is transferred in the holding furnace 7 then, with mould and die preheating to 260 ℃ and with its inner surface spraying one deck releasing agent, by vavuum pump the mold cavity internal pressure is reduced to 0.05MPa, open the valve on the woven hose 6, start infusion pump 8, the magnesium alloy liquation is injected mold cavity with the pressure of 0.05～1MPa and steadily controlled speed, the output pressure that improves infusion pump after the magnesium alloy liquation is full of die cavity is frozen into part to 0.8MPa until the magnesium alloy liquation.
Claims (5)
1. magnesium alloy hub pressure casting apparatus, it is characterized in that: be included as the magnesium alloy liquation infusion pump, runner system, mould, the die casting machine that fills type power is provided, the woven hose of runner system links to each other with counterdie.
2. a magnesium alloy hub pressure casting method is characterized in that: qualified magnesium alloy liquation is driven acquisition by infusion pump fill type power, and charge into mold cavity with the speed of stable and controllable, solidification forming under the effect of 0.1～1MPa pressure.
3. according to the described magnesium alloy hub pressure casting method of claim 2, it is characterized in that the mould that is used for the wheel hub shaping need be preheated to 120～480 ℃ before die casting.
4. according to the described magnesium alloy hub pressure casting method of claim 2, it is characterized in that the mold cavity internal pressure is 1 atmospheric pressure before die casting.
5. according to the described magnesium alloy hub pressure casting method of claim 2, it is characterized in that the mold cavity internal pressure before die casting less than 1 atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021358850A CN1323783C (en) | 2002-12-16 | 2002-12-16 | Magnesium alloy hub pressure casting apparatus and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021358850A CN1323783C (en) | 2002-12-16 | 2002-12-16 | Magnesium alloy hub pressure casting apparatus and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1507970A true CN1507970A (en) | 2004-06-30 |
| CN1323783C CN1323783C (en) | 2007-07-04 |
Family
ID=34231539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021358850A Expired - Fee Related CN1323783C (en) | 2002-12-16 | 2002-12-16 | Magnesium alloy hub pressure casting apparatus and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1323783C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934363A (en) * | 2010-09-02 | 2011-01-05 | 许小忠 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
| CN102527994A (en) * | 2012-03-07 | 2012-07-04 | 威海万丰镁业科技发展有限公司 | Low-pressure casting device |
| CN103212687A (en) * | 2012-01-19 | 2013-07-24 | 香港生产力促进局 | Casting device and casting method for wheel disc workpieces |
| CN105268939A (en) * | 2015-10-26 | 2016-01-27 | 贵州裕高电子有限责任公司 | Pure aluminum cathode conductive beam die-casting technology for metal electrolysis |
| CN106513629A (en) * | 2016-11-10 | 2017-03-22 | 无锡市明盛强力风机有限公司 | Improved AZ31 magnesium alloy hub extrusion casting technology |
| CN106735079A (en) * | 2016-12-26 | 2017-05-31 | 安庆迪力机械铸造有限公司 | A kind of forklift hub extrusion casint device |
| CN108405827A (en) * | 2018-04-08 | 2018-08-17 | 仝仲盛 | The preparation process of automobile magnesium alloy hub |
| CN111496225A (en) * | 2020-05-22 | 2020-08-07 | 山西电机制造有限公司 | Low-pressure cast aluminum pressurizing process for cast aluminum rotor of three-phase asynchronous high-voltage motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3776142B2 (en) * | 1995-02-13 | 2006-05-17 | 三井金属鉱業株式会社 | Magnesium alloy melting and casting method |
| CN2476374Y (en) * | 2001-04-05 | 2002-02-13 | 北京北方恒利科技发展有限公司 | Electromagnetic pump mold-filling type magnesium alloy low pressure casting system |
-
2002
- 2002-12-16 CN CNB021358850A patent/CN1323783C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934363A (en) * | 2010-09-02 | 2011-01-05 | 许小忠 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
| CN101934363B (en) * | 2010-09-02 | 2012-11-21 | 许小忠 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
| CN103212687A (en) * | 2012-01-19 | 2013-07-24 | 香港生产力促进局 | Casting device and casting method for wheel disc workpieces |
| CN102527994A (en) * | 2012-03-07 | 2012-07-04 | 威海万丰镁业科技发展有限公司 | Low-pressure casting device |
| WO2013131405A1 (en) * | 2012-03-07 | 2013-09-12 | 威海万丰镁业科技发展有限公司 | Low-pressure casting device |
| CN105268939A (en) * | 2015-10-26 | 2016-01-27 | 贵州裕高电子有限责任公司 | Pure aluminum cathode conductive beam die-casting technology for metal electrolysis |
| CN106513629A (en) * | 2016-11-10 | 2017-03-22 | 无锡市明盛强力风机有限公司 | Improved AZ31 magnesium alloy hub extrusion casting technology |
| CN106735079A (en) * | 2016-12-26 | 2017-05-31 | 安庆迪力机械铸造有限公司 | A kind of forklift hub extrusion casint device |
| CN108405827A (en) * | 2018-04-08 | 2018-08-17 | 仝仲盛 | The preparation process of automobile magnesium alloy hub |
| CN108405827B (en) * | 2018-04-08 | 2019-11-01 | 仝仲盛 | The preparation process of automobile magnesium alloy hub |
| CN111496225A (en) * | 2020-05-22 | 2020-08-07 | 山西电机制造有限公司 | Low-pressure cast aluminum pressurizing process for cast aluminum rotor of three-phase asynchronous high-voltage motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1323783C (en) | 2007-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101274361B (en) | Low speed vacuum squeeze casting technology | |
| CN101927329B (en) | Vacuum high-pressure casting method | |
| CN104014760B (en) | A kind of die casting that can prevent foundry goods shrinkage cavity and its extrusion process | |
| CN105945255B (en) | Thin-wall part die casting and die-cast formation equipment | |
| CN102615268B (en) | Antigravity squeeze casting device of aluminum alloy connecting rod and manufacture method | |
| CN201596759U (en) | Double-crucible low pressure casting machine | |
| CN105642866B (en) | A kind of aluminum-alloy wheel metal-mold low-pressure casting shaping crystallization boosting method | |
| CN102784902B (en) | Metal mold pressure regulating casting device | |
| CN1323783C (en) | Magnesium alloy hub pressure casting apparatus and method thereof | |
| CN105583395B (en) | A kind of aluminium alloy automobile chassis casting metal-mold low-pressure casting shaping crystallization boosting method | |
| CN108296468A (en) | A kind of pressure regulation supercharging casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure | |
| CN106623856A (en) | Method and device for improving quality of squeezing and casting piston casting | |
| CN206153538U (en) | Two open die utensils in semi -solid forming machine | |
| CN102784898B (en) | Local pressurization mechanism and method for producing automobile engine suspension shock insulators by same | |
| CN208680491U (en) | A kind of low pressure casting die of automobile cylinder cover | |
| CN109622835B (en) | Casting and forging composite forming device for shaft sleeve parts | |
| CN1322948C (en) | Mould and method for preparation high-pressure switch cast aluminium can | |
| CN214977629U (en) | Semi-solid pressure casting forming equipment | |
| CN108237210A (en) | A kind of high tough aluminium alloy automobile connector Semi-solid Thixo-Casting method | |
| CN107931581B (en) | The more echelon pressure regulation combined shaping methods of aluminum matrix composite | |
| CN114799131A (en) | Negative pressure drainage type casting and forging forming device and method for metal material | |
| CN110551929A (en) | automobile part die-casting production process | |
| CN202097393U (en) | Oxygen-free piston casting device | |
| CN201760581U (en) | Low pressure casting die for improving the mechanical properties of aluminium alloy wheel rim | |
| CN201127989Y (en) | Casting mold capable of using new casting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20111216 |