CN102601347A - Casting device and method of coated magnesium alloy casting by using in-mould spraying method - Google Patents
Casting device and method of coated magnesium alloy casting by using in-mould spraying method Download PDFInfo
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- CN102601347A CN102601347A CN2012101278299A CN201210127829A CN102601347A CN 102601347 A CN102601347 A CN 102601347A CN 2012101278299 A CN2012101278299 A CN 2012101278299A CN 201210127829 A CN201210127829 A CN 201210127829A CN 102601347 A CN102601347 A CN 102601347A
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- woven hose
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- electromagnetic pump
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Abstract
The invention discloses a casting device of a coated magnesium alloy casting by using an in-mould spraying method, comprising a mould device, a spraying system, an exhaust system, a pouring device and a control device; a stationary mould is provided with an inner-layer molten metal sprue gate; the spraying system comprises an electric arc spraying gun, an electric arc spraying power supply, an air compressor, a spraying wire and other accessories; the exhaust system comprises an exhaust brick and an exhaust groove; the pouring device comprises a heat preserving furnace, an electromagnetic pump and an infusion tube; and the control device comprises a control valve and other accessories. Meanwhile, the invention also discloses a casting method of the coated magnesium alloy casting by using the in-mould spraying method. According to the casting device and method of the coated magnesium alloy casting by using the in-mould spraying method, provided by the invention, coating metal is sprayed on the surface of a mold cavity, and inner-layer metal is poured so that the coated magnesium alloy casting is obtained; and spraying pretreatment and the operation on the device are simple, the device is good in environment friendliness, and the magnesium alloy casting with complex shape and high surface size precision can be obtained.
Description
Technical field
The present invention relates to spray coated type Mg alloy castings casting device and casting method thereof in a kind of mould, belong to the magnesium alloy cast field.
Background technology
Magnesium alloy is as the commercial metal engineering material of lightweight; Because of it has that density is little, specific stiffness and specific strength is high, strong, the liquid forming property of damping shock absorption noise reduction capability is superior, can electromagnetic radiation shielding and be easy to the characteristics of a series of meeting " green structural material of 21 century " such as recyclings, make its be particularly suitable for the vehicles such as automobile, motorcycle with computer, communicate by letter, field application such as instrument and meter, household electrical appliances, light industry, military affairs.Yet the chemical property of (1) magnesium alloy is active, and corrosion resistance is poor, corrosion easily under the environment of humidity, and this makes magnesium alloy to using environment higher requirement arranged, this is the one of the main reasons of restriction magnesium alloy widespread usage.(2) poor heat resistance; The fusing point of magnesium alloy is lower; The operating temperature of general Mg-Al alloy generally can not be above 120 ℃; And the operating temperature of the high-temperature component such as the automobile power parts will reach 150 ℃, and the operating temperature range that this has surpassed magnesium alloy commonly used has limited the application of magnesium alloy under higher temperature.Therefore, for mainly containing chemical composition coating, differential arc oxidation processing, various organic coating, ion injection, vapor phase deposition, laser, the existing main methods of surfacecti proteon work that improves magnesium and alloy thereof melts deposited, surface spraying etc.
In the prior art; Chinese patent 201110417990.5 discloses " a kind of method of magnesium alloy surface spraying aluminized coating "; This method is used the acetone oil removing; Blast is handled magnesium alloy member to be sprayed, to surperficial even roughness, no metallic luster, utilizes the HVAF technology in Mg alloy surface deposition of aluminum coating.One Chinese patent application numbers 200510029884.4 discloses " vacuum sucking cast process of preparing of magnesium base composite material ", and this method is fixed in the formwork of preheating on the dividing plate with the formwork fixed cover, and the formwork mouth feeds protective gas then; Open the stop valve that links to each other with vacuum; Sealing vacuumizes in the die cavity, keep after reaching the vacuum balance, rapidly with concise good magnesium base composite material melt cast in the formwork die cavity; Make the magnesium base composite material molten metal at vacuum retrofilling formwork die cavity; Keep vacuum up to solidifying fully, remove formwork, obtain the magnesium alloy materials foundry goods of thin-walled, complicacy at last.
In present commercial Application, generally to carry out the form production of surface-coated after the homogenous material casting again, dimensional accuracy and surface smoothness are difficult to guarantee Mg alloy castings.
Summary of the invention
To weak point of the prior art, one of the object of the invention is to provide a kind of mould easy and simple to handle, with low cost, that the feature of environmental protection is good interior spraying process cladded type casting device.
Two of the object of the invention is to provide spraying process cladded type Mg alloy castings casting method in the high mould of a kind of dimensional accuracy.
One of the object of the invention is realized through following technical scheme:
Spraying process cladded type Mg alloy castings casting device in a kind of mould comprises die device, paint finishing, gas extraction system, apparatus for pouring and control device;
Said die device comprises the dynamic model that is installed on the moving platen and is installed in the cover half on the solid plate, on cover half, is provided with inner layer metal liquid sprue gate;
Said paint finishing comprises arc spray gun, electrical arc spraying power source, air compressor machine, spraying wire and other annexes;
Said gas extraction system comprises and is arranged on the air discharge duct that communicates with die cavity on the dynamic model and is arranged near the exhaust brick the cover half inner layer metal liquid sprue gate that said exhaust brick is processed by resin sand, and said die cavity communicates with the external world through exhaust brick and air discharge duct;
Said apparatus for pouring comprises holding furnace, electromagnetic pump, woven hose; The inlet of said electromagnetic pump is communicated with the liquid outlet of holding furnace, and an end of said woven hose is communicated with the liquid outlet of electromagnetic pump, and the other end of woven hose is connected with the pouring metal melt mouth and is communicated with die cavity through inner layer metal liquid sprue gate; Said electromagnetic pump, woven hose, pouring metal melt mouth all adopt heat tracing material parcel.
Said control device comprises control valve and other annexes, and said control valve is installed on the woven hose and near inner layer metal liquid sprue gate.
Two of the object of the invention is realized through following technical scheme:
Spraying process cladded type Mg alloy castings casting method in a kind of mould, its detailed step is following:
(1) difference painting of coating on dynamic model and cover half;
(2) utilize electric arc spraying equipment, select corresponding silk material to the die cavity inner-wall spraying in conjunction with required top layer performance, alloy layer thickness is controlled by the spray time of spraying process;
(3) mould is fixed on the support;
(4) inlet with electromagnetic pump is communicated with the liquid outlet of holding furnace; One end of woven hose is communicated with the liquid outlet of electromagnetic pump; The other end of woven hose is communicated with die cavity through the inner layer metal liquid sprue gate that is arranged on the cover half, is installed on the woven hose control valve and near inner layer metal liquid sprue gate;
(5) open control valve earlier, open electromagnetic pump then, the magnesium alloy molten metal in the holding furnace gets in the die cavity and is full of die cavity;
(6) treat the magnesium alloy molten metal cooled and solidified that die cavity is interior, close electromagnetic pump, treat that the remaining molten metal in the woven hose returns in the holding furnace closed control valve;
(7) die sinking is taken out foundry goods in die cavity, thereby obtains the cladded type Mg alloy castings;
Compared with prior art, spraying process cladded type Mg alloy castings and casting method thereof have following advantage in a kind of mould of the present invention:
(1) spraying process cladded type Mg alloy castings casting device and casting method thereof in a kind of mould provided by the invention, the coating that different sprayed on material form at Mg alloy surface can play characteristics such as anticorrosion, heat insulation, rub resistance.
(2) spraying process cladded type Mg alloy castings casting device and casting method thereof in a kind of mould provided by the invention can obtain the complicated cladded type foundry goods of surface configuration at last, and casting dimension accuracy is high, and surface smoothness is good.
(3) spraying process cladded type Mg alloy castings casting device and casting method thereof in the mould provided by the invention combine with the coating of coating at the inner molten metal of accomplishing of die cavity, and the spraying pre-treatment is simple to operate with device, and the feature of environmental protection is good.
Description of drawings
Fig. 1 is the structural representation of spraying process cladded type Mg alloy castings casting device in a kind of mould;
In the accompanying drawing: 1-holding furnace; 2-molten metal; 3-electromagnetic pump; 4-woven hose; 5-control valve; 6-cover half; 7-exhaust is changeed; 8-dynamic model; 9-outgassing groove; 10-pouring metal melt mouth.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done to describe in further detail:
As shown in Figure 1, spraying process cladded type Mg alloy castings casting device comprises in a kind of mould: die device, paint finishing, gas extraction system, apparatus for pouring and control device.
Die device comprises the cover half that is installed on the solid plate and is installed in the dynamic model on the moving platen.
Paint finishing comprises arc spray gun, electrical arc spraying power source, air compressor machine, spraying wire and other annexes; Select required spraying wire as required; The fusing point of selected silk material needs higher than the fusing point of inner layer metal liquid; Spraying process is grasped the thickness of alloy-layer according to spray time, and coating as far as possible evenly.
Gas extraction system mainly comprises the air discharge duct 9 that communicates with die cavity on the dynamic model; In order to discharge the gas in the die cavity in the cast fashion; Gas extraction system also comprises the exhaust brick 7 in the exhaust brick mounting groove that is arranged on the cover half 6 and is provided with near inner layer metal liquid sprue gate 10; The exhaust brick of being processed by resin sand 7 is installed in the exhaust brick mounting groove, and die cavity communicates with air discharge duct 9 with the external world through exhaust brick 7.
Apparatus for pouring comprises holding furnace 1, electromagnetic pump 3, woven hose 4, control valve 5.The inlet of electromagnetic pump 3 is communicated with the liquid outlet of holding furnace 1; One end of woven hose 4 is communicated with the liquid outlet of electromagnetic pump 3; The other end of woven hose 4 is communicated with die cavity through the inner layer metal liquid sprue gate 10 that is arranged on the cover half, is installed on the woven hose 4 control valve 5 and near inner layer metal liquid sprue gate 10.In order to guarantee that molten metal residual metallic fluid power after the casting mold solidified inside does not enough stop up woven hose 4, all is coated with the heat tracing layer outside woven hose 4, control valve 5 and electromagnetic pump 3.
Control device comprises control valve 5 and other annexes, is installed in woven hose 4 tops near molten metal inlet 10 positions.
Spraying process cladded type Mg alloy castings casting method in a kind of mould, this method is parent metal liquid with AZ91D, and outer coating is that spelter coating is an example, and concrete steps are following:
(1) difference painting of coating on dynamic model 8 and cover half 6;
(2) with the wire drawing type electric arc spraying rifle coating surface in the die cavity is sprayed spelter coating, coating layer thickness is controlled according to spray time, guarantees the uniformity of coating as far as possible;
(3) mould is fixed on the support;
(4) inlet with electromagnetic pump 3 is communicated with the liquid outlet of holding furnace 1; One end of woven hose 4 is communicated with the liquid outlet of electromagnetic pump 3; The other end of woven hose 4 is communicated with die cavity through the inner layer metal liquid sprue gate 10 that is arranged on the cover half, is installed on the woven hose 4 control valve 5 and near inner layer metal liquid sprue gate 10.Woven hose 4, electromagnetic pump 3, control valve 5 are coated the heat tracing layer;
(5) opening controlling valve 5 and electromagnetic pump 3 get in the die cavity molten metal in the holding furnace;
(6) treat the magnesium alloy molten metal cooled and solidified that die cavity is interior, close electromagnetic pump 3, treat that the remaining molten metals in the woven hose 4 return in the holding furnace 1 closed control valve 5;
(7) die sinking is taken out foundry goods, thereby is obtained a kind of cladded type Mg alloy castings;
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. the interior spraying process cladded type Mg alloy castings casting device of mould comprises die device, paint finishing, gas extraction system, apparatus for pouring and control device;
Said die device comprises the dynamic model (8) that is installed on the moving platen and is installed in the cover half (6) on the solid plate, on cover half (6), is provided with inner layer metal liquid sprue gate (10);
Said paint finishing comprises arc spray gun, electrical arc spraying power source, air compressor machine, spraying wire and other annexes;
Said gas extraction system comprises and being arranged on the die device, and the air discharge duct that communicates with die cavity (9);
Said apparatus for pouring comprises holding furnace (1), electromagnetic pump (3), woven hose (4); The inlet of said electromagnetic pump (3) is communicated with the liquid outlet of holding furnace (1); One end of said woven hose (4) is communicated with the liquid outlet of electromagnetic pump (3), and the other end of woven hose (4) is connected with inner layer metal liquid sprue gate (10) and is communicated with die cavity through inner layer metal liquid sprue gate (10);
Said control device comprises control valve (5) and other annexes, and said control valve (5) is installed on the woven hose (4) and near inner layer metal liquid sprue gate (10).
2. spraying process cladded type Mg alloy castings casting device in a kind of mould according to claim 1; It is characterized in that: said gas extraction system also comprises and being installed on the cover half (6); And near the exhaust brick (7) in the exhaust brick mounting groove at inner layer metal liquid sprue gate (10); Said exhaust brick (7) is processed by resin sand, and said die cavity communicates with the external world through exhaust brick (7) and air discharge duct (9).
3. spraying process cladded type Mg alloy castings casting device in a kind of mould according to claim 1 and 2 is characterized in that: heat tracing layer parcel all adopted at said electromagnetic pump (3), woven hose (4), inner layer metal liquid sprue gate (10).
4. the interior spraying process cladded type Mg alloy castings casting method of mould is characterized in that, comprises the steps:
(1) goes up painting of coating respectively at dynamic model (8) and cover half (6);
(2) with arc spray gun mold cavity surface is sprayed alloy-layer;
(3) mould is fixed on the support;
(4) inlet with electromagnetic pump (3) is communicated with the liquid outlet of holding furnace (1); One end of woven hose (4) is communicated with the liquid outlet of electromagnetic pump (3); The other end of woven hose (4) is communicated with die cavity through the inner layer metal liquid sprue gate (10) that is arranged on the cover half, and control valve (5) is installed on the woven hose (4) and near inner layer metal liquid sprue gate (10); Skin to woven hose (4), electromagnetic pump (3), control valve (5) coats the heat tracing material;
(5) opening controlling valve (5) and electromagnetic pump (3) get in the die cavity inner layer metal liquid in the holding furnace;
(6) treat the molten metal cooled and solidified that die cavity is interior, close electromagnetic pump (3), treat that the remaining molten metal in the woven hose (4) returns in the holding furnace (1) closed control valve (5);
(7) foundry goods is taken out in die sinking, thereby obtains the cladded type Mg alloy castings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127829.9A CN102601347B (en) | 2012-04-27 | 2012-04-27 | Casting device and method of coated magnesium alloy casting by using in-mould spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127829.9A CN102601347B (en) | 2012-04-27 | 2012-04-27 | Casting device and method of coated magnesium alloy casting by using in-mould spraying method |
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| Publication Number | Publication Date |
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| CN102601347A true CN102601347A (en) | 2012-07-25 |
| CN102601347B CN102601347B (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210127829.9A Expired - Fee Related CN102601347B (en) | 2012-04-27 | 2012-04-27 | Casting device and method of coated magnesium alloy casting by using in-mould spraying method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681853A (en) * | 2019-10-18 | 2020-01-14 | 重庆函木科技有限公司 | Door industry manufacturing equipment and processing technology thereof |
| CN113199010A (en) * | 2021-04-26 | 2021-08-03 | 中国兵器工业第五九研究所 | Method for alloying magnesium element on surface layer of aluminum alloy casting |
| CN114599465A (en) * | 2019-12-23 | 2022-06-07 | 本田金属技术株式会社 | Aluminum casting method and mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354055A (en) * | 2001-10-24 | 2002-06-19 | 西安交通大学 | Surface alloying process of magnesium alloy in course of solidification |
| CN101927333A (en) * | 2010-09-02 | 2010-12-29 | 许小忠 | Magnesium alloy electromagnetic pump quantitative casting furnace |
| CN201791950U (en) * | 2010-09-02 | 2011-04-13 | 许小忠 | Low-pressure filling and high-pressure solidifying molding system for magnesium alloy hub electromagnetic pump |
-
2012
- 2012-04-27 CN CN201210127829.9A patent/CN102601347B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354055A (en) * | 2001-10-24 | 2002-06-19 | 西安交通大学 | Surface alloying process of magnesium alloy in course of solidification |
| CN101927333A (en) * | 2010-09-02 | 2010-12-29 | 许小忠 | Magnesium alloy electromagnetic pump quantitative casting furnace |
| CN201791950U (en) * | 2010-09-02 | 2011-04-13 | 许小忠 | Low-pressure filling and high-pressure solidifying molding system for magnesium alloy hub electromagnetic pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681853A (en) * | 2019-10-18 | 2020-01-14 | 重庆函木科技有限公司 | Door industry manufacturing equipment and processing technology thereof |
| CN110681853B (en) * | 2019-10-18 | 2021-08-24 | 广西金桦启门窗有限公司 | Door industry manufacturing equipment and processing technology thereof |
| CN114599465A (en) * | 2019-12-23 | 2022-06-07 | 本田金属技术株式会社 | Aluminum casting method and mold |
| CN113199010A (en) * | 2021-04-26 | 2021-08-03 | 中国兵器工业第五九研究所 | Method for alloying magnesium element on surface layer of aluminum alloy casting |
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| CN102601347B (en) | 2014-04-23 |
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