CN105234368A - Pure-aluminium die casting equipment and pure-aluminium die casting technology - Google Patents
Pure-aluminium die casting equipment and pure-aluminium die casting technology Download PDFInfo
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- CN105234368A CN105234368A CN201510740858.6A CN201510740858A CN105234368A CN 105234368 A CN105234368 A CN 105234368A CN 201510740858 A CN201510740858 A CN 201510740858A CN 105234368 A CN105234368 A CN 105234368A
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Abstract
The invention is applicable to the technical field of pure-aluminium die casting, and discloses pure-aluminium die casting equipment and a pure-aluminium die casting technology. The pure-aluminium die casting equipment comprises a die-casting machine connected with a die-casting die; the die-casting machine comprises a material feeding barrel; the pure-aluminium die casting equipment further comprises a central melting furnace used for heating and melting an aluminium block, a heat preserving furnace used for performing heat preservation on molten aluminium, a molten aluminium feeding device used for conveying the molten aluminium into the material feeding barrel and a press-shooting device used for press-shooting the molten aluminium from the material feeding barrel to the die cavity of the die casting die; an ejecting device used for ejecting a formed product from the die cavity is arranged on one side of the die casting die; and the press-shooting device is provided with an electro-hydraulic proportional throttle valve with valve core position feedback. The above pure-aluminium die casting equipment is adopted in the pure-aluminium die casting technology. By adopting the pure-aluminium die casting equipment and the pure-aluminium die casting technology provided by the invention, the production qualification rate is high; the cost is low; and the requirement of markets on volume production of pure-aluminium parts is met.
Description
Technical field
The invention belongs to fine aluminium die-casting technique field, particularly relate to a kind of fine aluminium die casting equipment and fine aluminium extrusion process.
Background technology
Aluminum alloy die casting is commercially widely used, such as all kinds of handware, structural member etc., but the problem such as current aluminum alloy die casting ubiquity is siliceous, radiating effect is poor, anodic oxidation cannot be carried out in surface, can only use spray paint, the technique such as plating, cause outward appearance beautiful not like this, corrosion resistance is poor, wear no resistance, easily peel off variable color.And fine aluminium product, just can solve the problem, the fine aluminium part product after die casting is after anodized, and corrosion resistance is good, and conduction is good with thermal conductivity, and impurity is few, rich color after surface treatment, meets environmental requirement.
But fine aluminium die-casting technique is in the market not mature enough, this is because the fusing point of fine aluminium comparatively aluminium alloy is high, surface tactile sensation is partially soft, poor fluidity, and easy sticking to mould, easily splits, and easily wounds, and there is the problems such as production qualification rate is low, production cost is high.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of fine aluminium die casting equipment and fine aluminium extrusion process, its production qualification rate is high, cost is low, can meet market to fine aluminium part volume production demand.
Technical scheme of the present invention is: a kind of fine aluminium die casting equipment, comprise the die casting machine being connected with die casting, described die casting machine includes barrel, fine aluminium die casting equipment also comprise for by the central melting furnace of aluminium block heating and melting, the holding furnace being used for being incubated aluminium liquid, be used for aluminium liquid to deliver to described feeding cylinder to soup device, be used for aluminium liquid from described feeding cylinder injection to the injection device of the die cavity of die casting; The side of described die casting is provided with the liftout attachment for being ejected from described die cavity by the product after shaping, and described injection device is provided with the electro-hydraulic proportional throttle valve of belt spool position feedback.
Alternatively, described fine aluminium die casting equipment also comprises and is arranged at described die casting side and withdrawing device for product to be moved to conveyer belt from described die casting.
Alternatively, the real injection speed of described electro-hydraulic proportional throttle valve is not less than 7m/s, and the response time is less than 15ms.
Alternatively, described die casting is provided with exhaust structure, and described exhaust structure comprises many exhaust passages being arranged at described die casting, and described exhaust passage has the bending of at least one place.
Alternatively, described exhaust passage is in " Z " font.
Alternatively, the side of described die casting is provided with the separating agent spraying device for spraying releasing agent to described die cavity.
Alternatively, described releasing agent is without the releasing agent of silicon without moisture.
Present invention also offers a kind of fine aluminium extrusion process, adopt above-mentioned fine aluminium die casting equipment, comprise the following steps:
Use central melting furnace that fine aluminium block heat fused is become fine aluminium liquid; Holding furnace is adopted to be incubated as to the fine aluminium liquid after fusing; To soup device, fine aluminium liquid is sent in the feeding cylinder of die casting machine; Injection device by fine aluminium liquid from feeding cylinder injection to the die cavity of mould; Die casting die sinking, push pin device ejects fine aluminium die casting.
Alternatively, when by aluminium block heating and melting, at least one in zinc, manganese, zirconium is added with in fine aluminium block of material.
Alternatively, when being taken out in described die casting by product, injection releasing agent is carried out to the die cavity of described die casting.
Fine aluminium die casting equipment provided by the present invention and fine aluminium extrusion process, with higher than common aluminum alloy melting temperature, by also purification degasification after the fusing of fine aluminium block, increase exhaust passage as rapid exhaust, improve the performance of injection device, aluminium liquid is able to the die cavity injecting at a high speed die casting, overcome the problem that resistance that fine aluminium poor fluidity brings is large, make to fill type smooth and easy, avoid die cavity localized hyperthermia, and to feeding cylinder, mould is incubated, the high-quality high-efficiency realizing fine aluminium part is produced, production qualification rate is high, cost is low, market can be met to fine aluminium part volume production demand.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the floor map of the fine aluminium die casting equipment that the embodiment of the present invention provides;
Fig. 2 is the flow chart of the fine aluminium extrusion process that the embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
It should be noted that, when element is called as " being fixed on " or " being arranged at " another element, it can directly on another element or may there is centering elements simultaneously.When an element is known as " being connected to " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Also it should be noted that, the orientation term such as left and right, upper and lower in the embodiment of the present invention, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.
As depicted in figs. 1 and 2, a kind of fine aluminium die casting equipment that the embodiment of the present invention provides, comprise the die casting machine 1 being connected with die casting, described die casting machine 1 includes barrel, and feeding cylinder is communicated in the die cavity of die casting.Fine aluminium die casting equipment also comprise for by the central melting furnace of aluminium block heating and melting, the holding furnace being used for being incubated aluminium liquid, be used for aluminium liquid to deliver to described feeding cylinder to soup device, be used for aluminium liquid from described feeding cylinder injection to the injection device 2 of the die cavity of die casting; Central authorities melting furnace, holding furnace, can be disposed adjacent to soup device, injection device 2 and die casting machine 1.The side of described die casting is provided with the liftout attachment for being ejected from described die cavity by the product after shaping, described injection device 2 is provided with the electro-hydraulic proportional throttle valve of belt spool position feedback, electro-hydraulic proportional throttle valve is as high speed fast-response servo valve, ensure that real injection speed is increased to 7m/s or more, fast response time can be less than 15ms (from 0.1 to 7m/s), keep high pressure feeding pressure simultaneously, the electro-hydraulic proportional throttle valve of belt spool position feedback, can form by three grades, main seat valve is manipulated by hydraulic follow-up device, the position of hydraulic follow-up device is by 0-10V (0-20mA is optional), command signal is determined pro rata, main stage spool then follows the action of hydraulic follow-up device.Pressure reduction on main seat valve can reach maximum working pressure, speed and position can precisely control, and can respond by fast step, aluminium liquid can inject mold cavity at a high speed, overcome the large resistance that fine aluminium poor fluidity brings, make to fill type smooth and easy, avoid die cavity localized hyperthermia, improve production qualification rate and reduce costs.
Particularly, the surrounding of feeding cylinder can be provided with insulation material or attemperator.Die casting also can be provided with insulation material or attemperator, to ensure the mobility of aluminium liquid further, is easy to improve processability.
Particularly, described fine aluminium die casting equipment also comprises and is arranged at described die casting side and withdrawing device for product to be moved to conveyer belt from described die casting.Withdrawing device can be manipulator or other clamp device etc.
Particularly, the real injection speed of described electro-hydraulic proportional throttle valve is not less than 7m/s, and the response time is less than 15ms.
Particularly, described die casting is provided with exhaust structure, and described exhaust structure comprises many exhaust passages being arranged at described die casting, and described exhaust passage has the bending of at least one place, its good exhaust effect.
The present embodiment, described exhaust passage is in " Z " font, and exhaust passage also can undulate etc.
Particularly, the side of described die casting is provided with the separating agent spraying device for spraying releasing agent to described die cavity.
Particularly, described releasing agent can be without the releasing agent of silicon without moisture, avoids article surface siliceous, solves the problem of the easy sticking to mould of fine aluminium, also avoid article surface siliceous, is convenient to follow-uply do anodized.
The embodiment of the present invention additionally provides a kind of fine aluminium extrusion process, adopts above-mentioned fine aluminium die casting equipment, comprises the following steps:
Use central melting furnace that fine aluminium block heat fused is become fine aluminium liquid; Holding furnace is adopted to be incubated as to the fine aluminium liquid after fusing; To soup device, fine aluminium liquid is sent in the feeding cylinder of die casting machine 1; Injection device 2 by fine aluminium liquid from feeding cylinder injection to the die cavity of mould; Die casting die sinking, push pin device ejects fine aluminium die casting.Described injection device 2 is provided with the electro-hydraulic proportional throttle valve of belt spool position feedback, electro-hydraulic proportional throttle valve is as high speed fast-response servo valve, ensure that real injection speed is increased to 7m/s or more, fast response time can be less than 15ms (from 0.1 to 7m/s), keep high pressure feeding pressure simultaneously, the electro-hydraulic proportional throttle valve of belt spool position feedback, can form by three grades, main seat valve is manipulated by hydraulic follow-up device, the position of hydraulic follow-up device is by 0-10V (0-20mA is optional), command signal is determined pro rata, and main stage spool then follows the action of hydraulic follow-up device.Pressure reduction on main seat valve can reach maximum working pressure, speed and position can precisely control, and can respond by fast step, aluminium liquid can inject mold cavity at a high speed, overcome the large resistance that fine aluminium poor fluidity brings, make to fill type smooth and easy, avoid die cavity localized hyperthermia, improve production qualification rate and reduce costs.
Particularly, when by aluminium block heating and melting, be added with at least one in zinc, manganese, zirconium in fine aluminium block of material, to improve the mobility of aluminium liquid, be beneficial to the strengthening of structure.
Particularly, when being taken out in described die casting by product, carry out injection releasing agent to the die cavity of described die casting, described releasing agent can be without the releasing agent of silicon without moisture.
In embody rule, concrete technology method flow of the present invention is:
By central melting furnace (graphite crucible) heating, melting is carried out to fine aluminium block, smelting temperature is heated to 800 DEG C, central authorities' melting furnace (graphite crucible) use graphite material that fine aluminium liquid upper and lower temperature difference can be prevented bigger than normal, and purified treatment and degassing processing are carried out to the fine aluminium liquid after melting, ensure purity and the thermal conductivity of fine aluminium, prevent from occurring the defects such as pore in product in press casting procedure, described fine aluminium block is 1L99.
Fine aluminium block of material adds corresponding chemical element (as: zinc, manganese, zirconium etc.) reinforced structure, improves its intensity and mobility.
Melted fine aluminium liquid is poured into holding furnace by batch can car, holding furnace is the equipment coordinating the automated production of fine aluminium special die casting machine 1 and provide fine aluminium liquid in real time, the holding temperature of holding furnace, also namely the operating temperature of fine aluminium liquid is 750 DEG C to 800 DEG C, because the fusing point of fine aluminium is at about 660 DEG C, such fine aluminium liquid crystallization also can not keep liquid form always.
The special die casting machine 1 of fine aluminium comprises: the parts such as panel beating part, pylon part, injection part, rack section, oil circuit part.
By adopting high speed fast-response servo valve, ensure that real injection speed is increased to 7m/s, fast response time is less than 15ms (from 0.1 to 7m/s), keeps high pressure feeding pressure simultaneously, and uses fine aluminium die casting dedicated control system.Fast-response servo valve is the electro-hydraulic proportional throttle valve of a kind of belt spool position feedback, form by three grades, main seat valve is manipulated by hydraulic follow-up device, the position of hydraulic follow-up device is determined pro rata by 0-10V (0-20mA is optional) command signal, and main stage spool then follows the action of hydraulic follow-up device.Pressure reduction on main seat valve can reach maximum working pressure.Fast-response servo valve is applicable to the application scenario (press and die casting equipment etc.) that large discharge controls, and precisely controls for speed and position, and fast step responds.
Sent in the feeding cylinder of die casting machine 1 by fine aluminium liquid to soup device, feeding cylinder temperature can control at 200 DEG C to 300 DEG C by die heater, and such fine aluminium liquid is unlikely to temperature and falls too fast in injection process.
Fine aluminium hydraulic pressure is mapped in the die cavity of die casting by injection device 2, and die casting temperature is controlled at 200 DEG C to 300 DEG C by die heater, and die casting temperature is identical with feeding cylinder temperature, and such fine aluminium liquid enters in mold cavity process that can not to meet quenching condensing.
Die casting increase has at least one group of rapid exhaust (exhaust passage), ensures that pure aluminum liquid filling type is smooth and easy and complete, there will not be the defects such as pore.Rapid exhaust is the result be optimized in the making of mould, the passage of many exhausts is increased at mold cavity far-end, exhaust passage is grown and is " Z " type, during such product die cast, fine aluminium liquid stays to mold cavity, flow into exhaust passage, air is all extruded always, ensures mold cavity Vacuum Filling, avoid fine aluminium inside die-casting part and mix air, ensure that the inside of fine aluminium die casting is not containing defects such as pores admirably.
Die casting after pressure-maintaining and heat-preservation certain hour, fine aluminium special die casting machine 1 automatic die sinking, push pin device ejects fine aluminium die casting; Fine aluminium die casting takes out and is placed on conveyer belt by extractor (withdrawing device).In this die casting action of end, before entering die casting action next time, need carry out auto spraying can carry out the action of matched moulds die casting next time to die casting, what spraying sprayed is a kind of fine aluminium parting agent special.Releasing agent is a kind of functional materials between mould and finished product, and releasing agent has chemical resistance, is not dissolved when contacting with the chemical composition (particularly styrene and amine) of different resins.Releasing agent also has heat-resisting and stress performance, not easily decomposes or wearing and tearing; Releasing agent is adhered on mould not to be transferred on processed goods, does not hinder and sprays paint or do secondary machining operation.In the present embodiment, releasing agent is a kind of without the releasing agent of silicon without moisture, and it can solve the problem of the easy sticking to mould of fine aluminium better, also avoid article surface siliceous, is convenient to follow-uply do anodized.
A kind of extrusion process for the production of fine aluminium part provided by the present invention, solve the difficult problem that Vehicles Collected from Market fine aluminium part is difficult to die cast, when its pure aluminium workpiece surface hiccough produced is observed (amplifying 200 to 500 times), can find that die casting itself is closely knit, without air marks, tissue stabilization, is evenly bright-coloured beautiful after oxidation processes, various rich color product can be obtained, meet the demand of market diversification.
Fine aluminium die casting equipment provided by the present invention and fine aluminium extrusion process, with higher than common aluminum alloy melting temperature, by also purification degasification after the fusing of fine aluminium block, increase exhaust passage as rapid exhaust, improve the performance of injection device 2, aluminium liquid is able to the die cavity injecting at a high speed die casting, overcome the problem that resistance that fine aluminium poor fluidity brings is large, make to fill type smooth and easy, avoid die cavity localized hyperthermia, and to feeding cylinder, mould is incubated, the high-quality high-efficiency realizing fine aluminium part is produced, production qualification rate is high, cost is low, market can be met to fine aluminium part volume production demand.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a fine aluminium die casting equipment, comprise the die casting machine being connected with die casting, described die casting machine includes barrel, it is characterized in that, fine aluminium die casting equipment also comprise for by the central melting furnace of aluminium block heating and melting, the holding furnace being used for being incubated aluminium liquid, be used for aluminium liquid to deliver to described feeding cylinder to soup device, be used for aluminium liquid from described feeding cylinder injection to the injection device of the die cavity of die casting; The side of described die casting is provided with the liftout attachment for being ejected from described die cavity by the product after shaping, and described injection device is provided with the electro-hydraulic proportional throttle valve of belt spool position feedback.
2. fine aluminium die casting equipment as claimed in claim 1, is characterized in that, described fine aluminium die casting equipment also comprises and is arranged at described die casting side and withdrawing device for product to be moved to conveyer belt from described die casting.
3. fine aluminium die casting equipment as claimed in claim 1, is characterized in that, the real injection speed of described electro-hydraulic proportional throttle valve is not less than 7m/s, and the response time is less than 15ms.
4. fine aluminium die casting equipment as claimed in claim 1, it is characterized in that, described die casting is provided with exhaust structure, and described exhaust structure comprises many exhaust passages being arranged at described die casting, and described exhaust passage has the bending of at least one place.
5. fine aluminium die casting equipment as claimed in claim 4, is characterized in that, described exhaust passage is in " Z " font.
6. fine aluminium die casting equipment as claimed in claim 1, is characterized in that, the side of described die casting is provided with the separating agent spraying device for spraying releasing agent to described die cavity.
7. fine aluminium die casting equipment as claimed in claim 6, it is characterized in that, described releasing agent is without the releasing agent of silicon without moisture.
8. a fine aluminium extrusion process, is characterized in that, adopts the fine aluminium die casting equipment according to any one of claim 1 to 7, comprises the following steps:
Use central melting furnace that fine aluminium block heat fused is become fine aluminium liquid; Holding furnace is adopted to be incubated as to the fine aluminium liquid after fusing; To soup device, fine aluminium liquid is sent in the feeding cylinder of die casting machine; Injection device by fine aluminium liquid from feeding cylinder injection to the die cavity of mould; Die casting die sinking, push pin device ejects fine aluminium die casting.
9. fine aluminium extrusion process as claimed in claim 8, is characterized in that, when by aluminium block heating and melting, be added with at least one in zinc, manganese, zirconium in fine aluminium block of material.
10. fine aluminium extrusion process as claimed in claim 8, is characterized in that, when being taken out in described die casting by product, carrying out injection releasing agent to the die cavity of described die casting.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106052464A (en) * | 2016-06-17 | 2016-10-26 | 安徽天祥空调科技有限公司 | Parallel flow evaporator liquid accumulating main piece and preparation process thereof |
| CN106091786A (en) * | 2016-06-17 | 2016-11-09 | 安徽天祥空调科技有限公司 | The plate of a kind of solar energy brazing layer stacked heat exchanger and production technology thereof |
| CN106735047A (en) * | 2016-11-29 | 2017-05-31 | 朱士兴 | A kind of aluminium ingot die-casting process method |
| CN110125363A (en) * | 2019-06-24 | 2019-08-16 | 东莞东运镁业有限公司 | A kind of die-casting process of notebook computer casing |
| CN111940693A (en) * | 2020-07-06 | 2020-11-17 | 深圳市深汕特别合作区力劲科技有限公司 | Die casting method and die casting device |
| CN112517890A (en) * | 2019-09-18 | 2021-03-19 | 台州市椒江炜城机械厂 | Manufacturing process of motorcycle shock absorber aluminum cylinder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106735047A (en) * | 2016-11-29 | 2017-05-31 | 朱士兴 | A kind of aluminium ingot die-casting process method |
| CN110125363A (en) * | 2019-06-24 | 2019-08-16 | 东莞东运镁业有限公司 | A kind of die-casting process of notebook computer casing |
| CN112517890A (en) * | 2019-09-18 | 2021-03-19 | 台州市椒江炜城机械厂 | Manufacturing process of motorcycle shock absorber aluminum cylinder |
| CN111940693A (en) * | 2020-07-06 | 2020-11-17 | 深圳市深汕特别合作区力劲科技有限公司 | Die casting method and die casting device |
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Application publication date: 20160113 |