CN205183756U - Magnesium alloy valve formula casting machine - Google Patents
Magnesium alloy valve formula casting machine Download PDFInfo
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- CN205183756U CN205183756U CN201520619227.4U CN201520619227U CN205183756U CN 205183756 U CN205183756 U CN 205183756U CN 201520619227 U CN201520619227 U CN 201520619227U CN 205183756 U CN205183756 U CN 205183756U
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Abstract
The utility model discloses a magnesium alloy valve formula casting machine for magnesium alloy casting shaping field, this valve formula casting machine includes the thermal -insulated piston guide arm of filter residue honeycomb duct, piston flow control valve, valve body heating device, sectional type, piston actuating mechanism, discharge gate and protective gas input port, piston flow control valve be the pipeline valve body of " T " font that a level placed, piston flow control valve's one end downward sloping form the below passageway, the other end with filter residue honeycomb duct UNICOM, piston flow control valve's valve body one end install the double diameter piston, when this double diameter piston is closed, double diameter piston reducing face can constitute sealed face with the valve body other end, prevents magnesium alloy melt flow, when this double diameter piston is opened, the inclined plane of double diameter piston anterior segment becomes the water conservancy diversion face for the magnesium alloy fuse -element gets into under gravity and piston inclined plane dual function the below passageway gets into to water through the discharge gate with below passageway UNICOM and accomplishes the casting.
Description
Technical field
The utility model belongs to technical field of metallurgical equipment, particularly a kind of magnesium alloy valve type casting system.
Background technology
Magnesium alloy has that density is little, specific strength is high, larger than elastic modelling quantity, good heat dissipation, damping property are high, the corrosivity of large, the resistance to organic matter of the load-carrying ability that withstands shocks and alkali is good can performance.Day by day increase in the application of the industrial departments such as Aeronautics and Astronautics, transport, chemical industry, rocket.In high temperature environments, chemism is extremely active for magnesium alloy.After contacting with oxygen, the surface of liquid magnesium or high-temperature solid magnesium is easy to produce one deck and loosens oxide-film, this oxide-film be produced as further magnesia melt or solid-state magnesium provides passage, be difficult to produce protective effect to fresh magnesium liquid surface or solid-state magnesium surface.And under hot environment, in especially liquid situation, it is higher that magnesium alloy increases air pressure, easily produces magnesium steam on surface.Magnesia liberated heat is assembled at oxidized surface, and ignite magnesium steam, can cause blast accident.Therefore, melting in magnesium alloy cast process protection, anti-oxidation all very important in melt transhipment, casting, process of setting.
Current, the casting mode of magnesium alloy is mainly divided into two kinds: 1, adopt the mode of direct pouring that magnesium alloy fused mass is transferred to coagulation forming in mold from melting & holding furnace.This technology production efficiency is low, and in casting cycle, melt temperature is higher, easily scalds, and melt exposes in atmosphere in addition, is easily oxidized.In casting cycle, the field trash formed in flux, surperficial slag and magnesium alloy is wayward, has considerable influence to casting quality.2, adopt the mode of compression casting, in closed container, melt is pressed in casting mold shaping by gases at high pressure.The method shields the impact of air on magnesium alloy fused mass, but price is very expensive, limits the application of medium-sized and small enterprises.In addition, because this pressure casting processes needs design certain moduli tool, concerning small lot precise forming part not being an economic scheme.
What the magnesium alloy solution quantitative conveyer that Chinese utility model patent (ZL200520009524.3) proposes adopted is the mode that high-pressure gas pressure is carried, and is depressed in mold by the magnesium alloy fused mass in hyperbaric chamber through carrier pipe.This utility model is all placed in a closed container due to melt and is placed in hyperbaric environment, once magnesium alloy fires phenomenon have larger potential safety hazard.The second, the high-pressure system of this equipment is comparatively complicated, and cost is high.
Chinese invention patent (CN1846903A) adopts the method for vacuum siphon to be placed in vacuum packet by casting mold.Magnesium alloy under vacuum, is sucked in casting mold, is completed casting cycle from smelting furnace.The method needs the vacuum system of particular design, high cost.
Chinese utility model patent (ZL200820227822.3) utilizes centrifugal pump mode to be got rid of in drain pipe by magnesium alloy fused mass and completes casting cycle, because the structure of centrifugal pump itself is relatively accurate, the deposition of slag can have influence on the operation of equipment, and the slag deposition especially in drain pipe will cause drain pipe to block.Therefore this technology is difficult to the requirement that adaptation factory uses reliably and with long-term.
Utility model content
The purpose of this utility model is to provide a kind of magnesium alloy valve type casting system, is controlled the casting cycle of melt, to overcome various deficiency of the prior art by the keying of piston valve.
The technical solution of the utility model is; a kind of magnesium alloy valve type casting system; for magnesium alloy cast forming field; this valve type casting system comprises filter residue mozzle, piston type flow control valve, valve body heater, segmented insulating piston guide rod, piston drive mechanism, discharging opening and protective gas input port
Described piston type flow control valve is the pipeline valve body of " T " font of a horizontal positioned, the downward-sloping formation down channel in one end of described piston type flow control valve, the other end and described filter residue mozzle UNICOM,
Valve body one end of described piston type flow control valve is provided with double diameter piston, when this double diameter piston is closed, described double diameter piston reducing face can form sealing surface with the valve body other end, stop magnesium alloy fused mass flowing, when this double diameter piston is opened, the inclined-plane of described double diameter piston leading portion becomes guide face, makes magnesium alloy fused mass enter described down channel under gravity and piston inclined-plane double action, casting is completed by entering running channel with the discharging opening of down channel UNICOM
Described piston drive mechanism is connected with segmented insulating piston guide rod, the opening and closing movement of control piston formula flow control valve valve body under external electric signal effect,
Described protective gas input port, for being connected with protective gas input unit, make protective gas be distributed in piston type flow control valve valve body, protective gas exports the discharging opening position of passage downward,
Described discharging opening top and the down channel UNICOM of piston type flow control valve, the bottom of described discharging opening and casting mold casting system UNICOM, and gas shield device is installed,
Described valve body heater fixedly mounts from outside and described filter residue mozzle and piston type flow control valve.
Described filter residue mozzle is arranged on melt holding furnace or casting furnace is inner, filter residue mouth is from furnace bottom 10 ~ 30 cm distance in stove, and to prevent in-furnace slag from blocking filter residue mouth, magnesium alloy fused mass is after filter residue mouth filter residue, enter filter residue mozzle, then enter plug flow control valve.
Described segmented insulating piston guide rod is made up of three parts, comprises reducing piston portion, ceramic insulation part and piston guide rod part,
Ceramic insulation part adopts the athermanous high-strength alumina silicate fibre ceramic making of heat-resistance high-strength, and reducing piston portion and piston guide rod part adopt not nickel-containing heat resisting material or heat-stable ceramic to make,
Reducing piston portion and piston guide rod part are threaded connection and are provided with protective gas input port therebetween, pass through for protective gas,
Ceramic insulation part is a sleeve pipe, is placed on outside reducing piston portion and piston guide rod portion connection.
Magnesium alloy valve type casting system of the present utility model, is made up of filter residue mozzle, piston type flow control valve, valve body heater, segmented insulating piston guide rod, piston drive mechanism, discharging opening and protective gas input mechanism.Belong to metal material and field of metallurgical equipment.Magnesium alloy fused mass enters into piston type flow control valve via filter residue mozzle.At piston drive mechanism under the on off control of flow control valve, melt quantitatively can enter casting system via discharging opening.Flow control piston is segmentation Design on thermal insulation, effectively can keep the melt temperature in flow control valve.The supporting protective gas conveying device had of whole system, therefore in casting cycle, magnesium alloy fused mass does not contact with oxygen, and oxidation can be avoided to occur.This system architecture is simple, easy and simple to handle, safe and reliable, cost is low, and by filter residue mozzle, filter cleaning being carried out to melt, flow control valve can carry out fixing quantity to the melt amount of watering, and is conducive to the quality control and the realization casting automation that improve magnesium alloy casting process further.The utility model is that magnesium alloy casting provides economy, to cast solution reliably.
Accompanying drawing explanation
Fig. 1 is the structural representation of magnesium-alloy quantitative casting system in the utility model embodiment.
Fig. 2 is magnesium-alloy quantitative casting system piston flow control valve vertical section in the utility model embodiment.
Fig. 3 is magnesium-alloy quantitative casting system segment formula insulating piston guide rod profile in the utility model embodiment.
Wherein, 1---filter residue mozzle, 2---valve body heater; 3---piston flow control valve; 4---segmented piston guide rod, 5---piston drive mechanism, 6---protective gas input port; 7---discharging opening; 8---burner hearth, 9---piston comes directly towards, and 10---piston insulating collar; 11---protective gas input port, 12---piston guide rod.
Detailed description of the invention
As shown in Figure 1, comprise filter residue mozzle 1, valve body heater 2, piston flow control valve 3, segmented piston guide rod 4, piston drive mechanism 5, protective gas input port 6, discharging opening 7 is formed magnesium alloy valve type casting system of the present utility model.Filter residue mozzle 1 is arranged in magnesium-alloy smelting furnace from furnace bottom 10-30 centimetre distance, piles up block filter residue mozzle 1 to avoid slag.Through slagging-off, degassed after melt through filter residue mouth enter mozzle 1 and with flow control valve 3 one end UNICOM.This flow control valve 3 be a horizontal positioned tiltedly "
t" font pipeline valve body, be provided with double diameter piston in valve body side, when piston is closed, piston reducing face can form sealing surface with T-shaped pipeline opposite side, stops magnesium alloy fused mass flowing; When piston is opened, the inclined-plane of piston leading portion becomes guide face, makes magnesium alloy fused mass under gravity and piston inclined-plane double action, enter the below discharging opening 7 of T-shaped pipeline, enters running channel and complete casting.Piston opening and closing time interval can be used for the casting amount controlling alloy.Segmented insulating piston guide rod 4 is made up of three parts, comprises leading portion reducing piston top head part 9, stage casing ceramic insulation circle part 10, back segment piston guide rod part 12.Wherein, stage casing ceramic insulation circle part 10 adopts heat-resistance high-strength not thermal conductive ceramic; as high-strength alumina silicate fibre ceramic making, leading portion and back segment can adopt and make without nickel heat proof material or heat-stable ceramic, and both are threaded connection and centre has through hole to pass through for protective gas.Stage casing ceramic insulation part is a sleeve pipe, is placed on front and rear sections middle interconnecting piece and divides outside.Piston can drive 5 by pneumatic or electric driving mechanism, completes the folding of piston.Protective gas is inputted by valve body end input port 11, and through valve inner gas transmission pipeline, gas outlet is positioned at below valve body, downward discharging opening 7 position.Gas can be evenly distributed to discharging opening inside, protects magnesium alloy fused mass.This protective gas can be that the gases such as CO2, SF6, C3F5H3, C3F6 are formed through dilution, mixing.
The utility model can be used for the casting cycle in magnesium alloy cast, for medium-sized and small enterprises or miniature precision castings production provide low cost, high reliability, the quantitative casting system of high security, thus it is low to obtain degree of oxidation, the high-quality magnesium alloy fused mass of high purity, for experimental reliability is given security.
Claims (3)
1. a magnesium alloy valve type casting system; for magnesium alloy cast forming field; it is characterized in that, this valve type casting system comprises filter residue mozzle, piston type flow control valve, valve body heater, segmented insulating piston guide rod, piston drive mechanism, discharging opening and protective gas input port
Described piston type flow control valve is the pipeline valve body of " T " font of a horizontal positioned, the downward-sloping formation down channel in one end of described piston type flow control valve, the other end and described filter residue mozzle UNICOM,
Valve body one end of described piston type flow control valve is provided with double diameter piston, when this double diameter piston is closed, described double diameter piston reducing face can form sealing surface with the valve body other end, stop magnesium alloy fused mass flowing, when this double diameter piston is opened, the inclined-plane of described double diameter piston leading portion becomes guide face, makes magnesium alloy fused mass enter described down channel under gravity and piston inclined-plane double action, casting is completed by entering running channel with the discharging opening of down channel UNICOM
Described piston drive mechanism is connected with segmented insulating piston guide rod, the opening and closing movement of control piston formula flow control valve valve body under external electric signal effect,
Described protective gas input port, for being connected with protective gas input unit, make protective gas be distributed in piston type flow control valve valve body, protective gas exports the discharging opening position of passage downward,
Described discharging opening top and the down channel UNICOM of piston type flow control valve, the bottom of described discharging opening and casting mold casting system UNICOM, and gas shield device is installed,
Described valve body heater fixedly mounts from outside and described filter residue mozzle and piston type flow control valve.
2. a magnesium alloy valve type casting system as claimed in claim 1, it is characterized in that, described filter residue mozzle is arranged on melt holding furnace or casting furnace is inner, filter residue mouth in stove from furnace bottom 10 ~ 30 cm distance, filter residue mouth is blocked to prevent in-furnace slag, magnesium alloy fused mass, after filter residue mouth filter residue, enters filter residue mozzle, then enters plug flow control valve.
3. magnesium alloy valve type casting system as claimed in claim 1, it is characterized in that, described segmented insulating piston guide rod is made up of three parts, comprises reducing piston portion, ceramic insulation part and piston guide rod part,
Ceramic insulation part adopts the athermanous high-strength alumina silicate fibre ceramic making of heat-resistance high-strength, and reducing piston portion and piston guide rod part adopt not nickel-containing heat resisting material or heat-stable ceramic to make,
Reducing piston portion and piston guide rod part are threaded connection and are provided with protective gas input port therebetween, pass through for protective gas,
Ceramic insulation part is a sleeve pipe, is placed on outside reducing piston portion and piston guide rod portion connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619227.4U CN205183756U (en) | 2015-08-17 | 2015-08-17 | Magnesium alloy valve formula casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619227.4U CN205183756U (en) | 2015-08-17 | 2015-08-17 | Magnesium alloy valve formula casting machine |
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| CN205183756U true CN205183756U (en) | 2016-04-27 |
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| CN201520619227.4U Active CN205183756U (en) | 2015-08-17 | 2015-08-17 | Magnesium alloy valve formula casting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081294A (en) * | 2015-08-17 | 2015-11-25 | 共慧冶金设备科技(苏州)有限公司 | Magnesium alloy valve type casting system |
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2015
- 2015-08-17 CN CN201520619227.4U patent/CN205183756U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081294A (en) * | 2015-08-17 | 2015-11-25 | 共慧冶金设备科技(苏州)有限公司 | Magnesium alloy valve type casting system |
| CN105081294B (en) * | 2015-08-17 | 2018-01-30 | 共慧冶金设备科技(苏州)有限公司 | A kind of magnesium alloy valve type casting system |
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