CN102294458A - Die cast and production process thereof - Google Patents
Die cast and production process thereof Download PDFInfo
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- CN102294458A CN102294458A CN2010102145149A CN201010214514A CN102294458A CN 102294458 A CN102294458 A CN 102294458A CN 2010102145149 A CN2010102145149 A CN 2010102145149A CN 201010214514 A CN201010214514 A CN 201010214514A CN 102294458 A CN102294458 A CN 102294458A
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- paste layer
- metal surface
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- metal
- die casting
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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
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a die cast and a production process thereof, wherein the production process comprises the following steps of: firstly, fabricating a metal surface mount layer which is a metal thin plate or a metal sheet with one surface decorated previously; and secondly, arranging the metal surface mount layer and a die-casting alloy raw material on corresponding positions of a prefabrication die and performing integrated die-casting forming, and locating the metal mount layer above the die-casting alloy raw material, and wherein the die cast comprises the metal surface mount layer which is formed with the die-casting alloy raw material through integral die-casting; the metal surface mount layer is a metal thin plate or a metal sheet with one surface decorated previously and arranged on the surface of the die cast. As the process is employed in the invention, there is no need to subject the product to surface treatment, so that shortcomings caused by surface treatment steps can be avoided, the production period if shortened and the cost is reduced; and the product of the process has colorful appearance effect.
Description
Technical field
The present invention relates to the production technology of die casting, be specifically related to a kind of die casting and production technology thereof, the die casting surface of this explained hereafter can be exempted from the back and be decorated processing, directly applies to electronic product shell such as mobile phone, MP3, notebook.
Background technology
The die cast metal moulding process is a kind of important method that forms the non-ferrous metal structural member at present, and its product die casting has following benefit: 1, the dimensional accuracy height of die casting; 2, can produce the die casting of complex-shaped, clear-cut, deep-cavity thin-wall; 3, die casting dense structure has higher intensity and hardness; 4, die-casting material utilization rate height; 5, the production efficiency height of die casting is easily realized mechanization and automated production.
Though die casting has above plurality of advantages, part also comes with some shortcomings.Because the molten alloy loading time is short, cooling velocity is fast, the air in the mold cavity has little time to discharge, and the difficulty of feeding simultaneously causes the die casting surface to be prone to pore, pit or shrinkage porosite.In addition, with the kirsite be some die-cast products of representative if directly be exposed in the air without surface treatment, then can be turned black by eremacausis in its top layer.
Because the die casting surface is prone to pore, pit or shrinkage porosite, cause extremely out-of-flatness of surface, brought very big inconvenience therefore for its surperficial PROCESS FOR TREATMENT, at present very limited for the surperficial post processing processing mode of die casting, spray paint and plating is more practicable so far two kinds of technologies.Wherein spray not only operation very complicated, and shrink, bubble, hole point etc. often appear in the surface after spraying paint, thereby influence the quality of product, in addition, because the pit on die casting surface, pore etc. need the very thick lacquer of one deck just can fill and lead up, so not only influence the thickness of product itself and attractive in appearance, also wasted material; Die casting surface after the plating then is prone to sand holes, pore, pit etc., and present stage, its technology yield was lower than the former, and only about 50% reach the product quality requirement.
To sum up, existing die casting is surface irregularity not only, causes inconvenience to carry out PROCESS FOR TREATMENT on its surface; And at present very limited for the surperficial post processing processing mode of die casting, technology is also not mature enough.
Summary of the invention
The present invention is prone to pore, pit and shrinkage porosite for solving existing die casting surface, yet it is carried out the inconvenient again technical problem of surface treatment, provide a kind of die casting to exempt from surface treatment, the die casting and the production technology thereof of metal surface dress paste layer and diecasting alloys raw material one die cast.
For solving the problems of the technologies described above, the production technology of a kind of die casting provided by the invention comprises:
Make metal surface dress paste layer, described metal surface dress paste layer is meant simultaneously to have done decorates sheet metal or the metal sheet of handling;
Above-mentioned metal surface dress paste layer and diecasting alloys raw material are placed the relevant position of prefabricated mould respectively, carry out integrated die cast, and metal surface dress paste layer be positioned at the diecasting alloys raw material above.
The present invention also provides a kind of die casting, metal surface dress paste layer and diecasting alloys raw material one die cast, and described metal surface dress paste layer is meant simultaneously to have done decorates sheet metal or the metal sheet of handling, and places the die casting surface.
From above-mentioned die casting of the present invention and production technology scheme thereof as can be seen, by making the metal surface dress paste layer of having decorated on the surface earlier, again above-mentioned metal surface is adorned the relevant position that paste layer and diecasting alloys raw material place prefabricated mould respectively, carry out the one die cast and promptly get product, this product is because the surface has the metal surface dress paste layer of having decorated in the subregion at least, therefore need not the product die casting is carried out surface treatment, and then the drawback that can avoid surface treatment procedure to bring, shortened the production cycle, reduced cost, and, product die casting of the present invention, obtain by metal surface dress paste layer and diecasting alloys raw material one die cast, made full use of both superiority separately like this, give rich choice of products colorful appearance.
The specific embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The production technology of a kind of die casting provided by the invention comprises: at first make metal surface dress paste layer, described metal surface dress paste layer is meant simultaneously to have done decorates sheet metal or the metal sheet of handling; Secondly above-mentioned metal surface dress paste layer and diecasting alloys raw material are placed the relevant position of prefabricated mould respectively, and carry out integrated die cast, and metal surface dress paste layer be positioned at the diecasting alloys raw material above.
In concrete the enforcement, as a kind of optimal way of the present invention, can further comprise behind the dress paste layer of making metal surface: the another side at metal surface dress paste layer is coated with metal-to-metal adhesive.The purpose of doing like this is to strengthen combining of metal surface dress paste layer and diecasting alloys.Metal-to-metal adhesive described herein is not limited to any, that can buy on the market all can, wherein the coated weight of metal-to-metal adhesive is difficult for too much, and THICKNESS CONTROL is at 0.03mm-0.05mm, in order to avoid be subjected to the influence of high speed and high pressure to overflow glue and influence product appearance in the die cast process;
In concrete the enforcement, as another kind of optimal way of the present invention, the metal surface adorned paste layer and diecasting alloys raw material one die cast after, further comprise: the product surface after the moulding is polished, polished with sand paper.This step is further perfect to product, has reached requirements of different users.Described sand paper should be selected the sand paper of suitable order number for use, for example available 1200 or 1500 purpose fine sandpapers.
According to the present invention, the one side of described metal surface dress paste layer can by spray paint, technologies such as plating, etching or radium carving decorate.For example electroplating technology can make metallic article more attractive in appearance, improves its density, corrosion resistance; Spraying coating process is used for the protection and the sign of ornament, also can give the color of product diversification by japanning; Etch process can make product have the stereoeffect of relief by at the overwrought deep mixed texture in surface; Radium carver skill then can be got various literal, symbol and pattern etc., and character boundary can be from the millimeter to the micron dimension, and this has special meaning to product false proof.For material is the metal surface dress paste layer of aluminium; also can make anodized technology to it; the oxide-film that anodized produced has decorative effect, forms the protective layer that stops environmental corrosion, can improve wearability, electric conductivity, thermal conductivity, optical property etc.More than be to the several frequently seen decoration technology of metal surface dress paste layer, also comprise some other decoration technology certainly, do not enumerate one by one at this.Above-mentioned which kind of technology dress paste layer in metal surface is specifically taked, can decide the different demands of product according to the client.
According to the present invention, the bigger aluminium or the stainless steel of material preferred hardness of described metal surface dress paste layer, its thickness is preferably 0.1mm～0.3mm.Can avoid metal surface dress paste layer be out of shape by the influence of HTHP like this at press casting procedure.
According to the present invention, the described die casting condition that paste layer and diecasting alloys raw material one die cast are adorned in the metal surface is: the temperature of diecasting alloys raw material is with other different setting of metal species, mold temperature is 180 ℃～280 ℃, injection pressure is set at the 0.3-3 circle, is about 2.0s-6.0s cool time.Described mould comprises dynamic model and cover half, and wherein the dynamic model temperature is higher than the cover half temperature.
The present invention also provides a kind of die casting, and this die casting is to be obtained by metal surface dress paste layer and diecasting alloys raw material one die cast, and described metal surface dress paste layer is meant simultaneously to have done decorates sheet metal or the metal sheet of handling, and places the die casting surface.
The one side of described metal surface dress paste layer can by spray paint, plating, etching or radium carving decorate, and makes die casting of the present invention have colourful appearance, to satisfy user's different demands.
Come more detailed description technology contents of the present invention below by embodiment.
Embodiment one: (the diecasting alloys raw material is a kirsite)
1, deisgn product drawing is opened and is neutralized casting mould
The structural drawings of design die casting is established the location that paste layer is adorned in the metal surface.According to product configurations, open and neutralize casting mould, establishment metal surface dress paste layer stays and puts position and positioner in mold cavity, to guarantee accurate location.
2, the making of metal surface dress paste layer
According to the product design drawing, select aluminium sheet or the stainless steel sheet material of thickness between 0.1mm-0.3mm to adorn paste layer as the metal surface of product, it is carried out punching press and machining, strict controlling dimension tolerance, assurance machining accuracy in the process.One side (being called decorative cover) at above-mentioned aluminium sheet that processes or stainless steel sheet material can be done electroplating processes technology.The electroplating technology principle is: product is a negative electrode, and the desire plating is an anode, in containing the solution of desiring plating, by electrolysis, product surface is obtained in conjunction with firm metal film, gives that it is attractive in appearance, and improves density, corrosion resistance.The most frequently used plated metal has nickel, tin, copper, silver, gold.
3, the metal-to-metal adhesive of metal surface dress paste layer applies
The another side of metal surface dress paste layer applies with metal-to-metal adhesive, so that strengthen the engaging force between lamella and the diecasting alloys material.Coated weight is difficult for too much, and approximately 0.05mm thickness gets final product, thereby has influenced product appearance in order to avoid overflowed by the influence of high speed and high pressure.
4, metal surface decoration layer and diecasting alloys are carried out integrated die cast
The metal surface decoration layer that processes is placed in the compression mod, is that raw material carries out integrated die cast with diecasting alloys.In molding process, the debugging die-casting technological parameter guarantees that the outward appearance of die-cast product is good.Wherein die casting parameter is as follows: the zinc die casting alloys material temperature is 420 ℃～430 ℃, mold temperature is 180 ℃～220 ℃, and injection pressure is set at the 0.3-1 circle, is about 2.0-3.0s cool time, wherein the dynamic model temperature is higher than the cover half temperature, and for example the dynamic model temperature is 210 ℃; 190 ℃ of cover half temperature.
5, shaped article is finished conducting oneself well reason
Stub bar, the burr of cleaning die-cast product are polished, are polished with 1200 or 1500 purpose fine sandpapers, so that finally reach customer requirement.
Embodiment two: (the diecasting alloys raw material is a magnesium alloy)
1, deisgn product drawing is opened and is neutralized casting mould
The structural drawings of design die casting is established the location that paste layer is adorned in the metal surface.According to product configurations, open and neutralize casting mould, establishment metal surface dress paste layer stays and puts position and positioner in mold cavity, to guarantee accurate location.
2, the making of metal surface dress paste layer
According to the product design drawing, select the metal surface dress paste layer of the aluminium sheet of thickness between 0.1mm-0.3mm as product, it is carried out punching press and machining, strict controlling dimension tolerance, assurance machining accuracy in the process.One side at the above-mentioned aluminium sheet that processes can adopt anodised mode that it is done the surface processing.So-called anodic oxidation is meant on the aluminium sheet top layer to be aided with the monoxide film, makes it have some possible color and luster, and the reinforced aluminum thin sheet surface, improves its wear-resisting and hear resistance.
3, the metal-to-metal adhesive of metal surface dress paste layer applies
The another side of metal surface dress paste layer applies with metal-to-metal adhesive, so that strengthen the engaging force between lamella and the diecasting alloys material.Coated weight is difficult for too much, and approximately 0.03mm thickness gets final product, thereby has influenced product appearance in order to avoid overflowed by the influence of high speed and high pressure.
4, metal surface decoration layer and diecasting alloys are carried out integrated die cast
The metal surface decoration layer that processes is placed in the compression mod, is that raw material carries out integrated die cast with diecasting alloys.In molding process, the debugging die-casting technological parameter guarantees that the outward appearance of die-cast product is good.Wherein die casting parameter is as follows: the diecast magnesium alloy material temperature is 600 ℃～650 ℃, mold temperature is 210 ℃～270 ℃, and injection pressure is set at the 2.5-3 circle, is about 3.0-5.0s cool time, wherein the dynamic model temperature will be higher than the cover half temperature, and for example the dynamic model temperature is 250 ℃; 210 ℃ of cover half temperature.
5, shaped article is finished conducting oneself well reason
Stub bar, the burr of cleaning die-cast product are polished, are polished with 1200 or 1500 purpose fine sandpapers, so that finally reach customer requirement.
Embodiment three: (the diecasting alloys raw material is an aluminium alloy)
1, deisgn product drawing is opened and is neutralized casting mould
The structural drawings of design die casting is established the location that paste layer is adorned in the metal surface.According to product configurations, open and neutralize casting mould, establishment metal surface dress paste layer stays and puts position and positioner in mold cavity, to guarantee accurate location.
2, the making of metal surface dress paste layer
According to the product design drawing, select aluminium sheet or the stainless steel sheet material of thickness between 0.1mm-0.3mm to adorn paste layer as the metal surface of product, it is carried out punching press and machining, strict controlling dimension tolerance, assurance machining accuracy in the process.One side at above-mentioned aluminium sheet that processes or stainless steel sheet material is sprayed paint, and wherein can give its more common cast(ing) surface more colourful visual effect by spray the coating of different color in the one side of sheet metal or sheet material.
3, the metal-to-metal adhesive of metal surface dress paste layer applies
The another side of metal surface dress paste layer applies with metal-to-metal adhesive, so that strengthen the adhesion between lamella and the diecasting alloys raw material.Coated weight is difficult for too much, and approximately 0.04mm thickness gets final product, thereby has influenced product appearance in order to avoid overflowed by the influence of high speed and high pressure.
4, metal surface decoration layer and diecasting alloys are carried out integrated die cast
The metal surface decoration layer that processes is placed in the compression mod, is that raw material carries out integrated die cast with diecasting alloys.In molding process, the debugging die-casting technological parameter guarantees that the outward appearance of die-cast product is good.Wherein die casting parameter is as follows: the pack alloy material temperature is 700 ℃～730 ℃, mold temperature is 220 ℃～260 ℃, and injection pressure is set at the 2.5-3 circle, is about 4.0-6.0s cool time, wherein the dynamic model temperature will be higher than the cover half temperature, and for example the dynamic model temperature is 240 ℃; 230 ℃ of cover half temperature.
5, shaped article is done post processing
Stub bar, the burr of cleaning die-cast product are polished, are polished with 1200 or 1500 purpose fine sandpapers, so that finally reach customer requirement.
In summary, the foregoing description is that the diecasting alloys raw material is described technology contents of the present invention in detail with kirsite, magnesium alloy, aluminium alloy respectively.But the diecasting alloys raw material among the present invention also comprises copper alloy and terne metal except kirsite, magnesium alloy, aluminium alloy.Reason do not describe one by one at this, but it is still in core scheme scope of the present invention as space is limited.It should be noted that herein in the present invention, dress paste layer overlay area, metal surface need be decided on the structure and the die casting design thereof of product, realizes all or part of covering.Consider that wherein some die casting may play the connector effect in the finished product assembling, then its connecting portion need not to cover metal surface dress paste layer, only makes metal surface dress paste layer decoration on surface, disconnected position and gets final product, so that save production cost.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the production technology of a die casting is characterized in that, comprising:
Make metal surface dress paste layer, described metal surface dress paste layer is meant simultaneously to have done decorates sheet metal or the metal sheet of handling;
Above-mentioned metal surface dress paste layer and diecasting alloys raw material are placed the relevant position of prefabricated mould respectively, and carry out integrated die cast, and metal surface dress paste layer be positioned at the diecasting alloys raw material above.
2. the production technology of die casting as claimed in claim 1 is characterized in that, makes further to comprise after paste layer is adorned in the metal surface: the another side at metal surface dress paste layer is coated with metal-to-metal adhesive.
3. the production technology of die casting as claimed in claim 1 is characterized in that, paste layer and diecasting alloys raw material one die cast are adorned in the metal surface after, further comprise: the product surface after the moulding is polished, polished with sand paper.
4. as the production technology of claim 1,2 or 3 described die castings, it is characterized in that, the one side of described metal surface dress paste layer by spray paint, plating, etching or radium carving decorate.
5. as the production technology of claim 1,2 or 3 described die castings, it is characterized in that the thickness of described metal surface dress paste layer is 0.1mm～0.3mm.
6. as the production technology of claim 1,2 or 3 described die castings, it is characterized in that the material of described metal surface dress paste layer is aluminium or stainless steel.
7. as the production technology of claim 1,2 or 3 described die castings, it is characterized in that, the die casting condition of the metal surface being adorned paste layer and diecasting alloys raw material one die cast is: mold temperature is 180 ℃～280 ℃, and injection pressure is set at the 0.3-3 circle, is about 2.0s-6.0s cool time.
8. the production technology of die casting as claimed in claim 7 is characterized in that, described mould comprises dynamic model and cover half, and wherein the dynamic model temperature is higher than the cover half temperature.
9. a die casting is characterized in that, metal surface dress paste layer and diecasting alloys raw material one die cast, and described metal surface dress paste layer is meant simultaneously to have done decorates sheet metal or the metal sheet of handling, and places the die casting surface.
10. die casting as claimed in claim 9 is characterized in that, the one side of described metal surface dress paste layer by spray paint, plating, etching or radium carving decorate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102145149A CN102294458A (en) | 2010-06-25 | 2010-06-25 | Die cast and production process thereof |
| PCT/CN2011/074107 WO2011160508A1 (en) | 2010-06-25 | 2011-05-16 | Die cast product and process of preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102145149A CN102294458A (en) | 2010-06-25 | 2010-06-25 | Die cast and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102294458A true CN102294458A (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102145149A Pending CN102294458A (en) | 2010-06-25 | 2010-06-25 | Die cast and production process thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN102294458A (en) |
| WO (1) | WO2011160508A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103318248A (en) * | 2013-07-16 | 2013-09-25 | 江苏博众汽车部件有限公司 | Servo shell |
| CN104399932A (en) * | 2014-10-30 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Die cast molding method of reversed product |
| CN104439168A (en) * | 2014-11-18 | 2015-03-25 | 天津三星通信技术研究有限公司 | Electronic equipment assembly and manufacturing method thereof |
| CN104690244A (en) * | 2015-03-13 | 2015-06-10 | 格林精密部件（惠州）有限公司 | Manufacturing process for aluminum-containing die-casting shell capable of anodic oxidation |
| CN104841904A (en) * | 2015-04-13 | 2015-08-19 | 东莞沙头朝日五金电子制品有限公司 | Casting method for aluminum alloy hardware |
| CN105555089A (en) * | 2015-12-25 | 2016-05-04 | 深圳市卓怡恒通电脑科技有限公司 | Fabrication method of metal housing |
| CN113369454A (en) * | 2020-03-09 | 2021-09-10 | 巨腾国际控股有限公司 | Bimetal combining method and structure thereof |
| CN114700476A (en) * | 2022-03-22 | 2022-07-05 | 惠州市湘联金属制品有限公司 | Method for manufacturing radar camera assembly |
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| CN114226676A (en) * | 2021-12-15 | 2022-03-25 | 东风(十堰)有色铸件有限公司 | Machining method of aluminum alloy die casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103318248A (en) * | 2013-07-16 | 2013-09-25 | 江苏博众汽车部件有限公司 | Servo shell |
| CN104399932A (en) * | 2014-10-30 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Die cast molding method of reversed product |
| CN104439168A (en) * | 2014-11-18 | 2015-03-25 | 天津三星通信技术研究有限公司 | Electronic equipment assembly and manufacturing method thereof |
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| CN105555089A (en) * | 2015-12-25 | 2016-05-04 | 深圳市卓怡恒通电脑科技有限公司 | Fabrication method of metal housing |
| CN113369454A (en) * | 2020-03-09 | 2021-09-10 | 巨腾国际控股有限公司 | Bimetal combining method and structure thereof |
| CN114700476A (en) * | 2022-03-22 | 2022-07-05 | 惠州市湘联金属制品有限公司 | Method for manufacturing radar camera assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011160508A1 (en) | 2011-12-29 |
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Application publication date: 20111228 |