CN203737962U - Refining device for metal solidification structure - Google Patents

Refining device for metal solidification structure Download PDF

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Publication number
CN203737962U
CN203737962U CN201320671060.7U CN201320671060U CN203737962U CN 203737962 U CN203737962 U CN 203737962U CN 201320671060 U CN201320671060 U CN 201320671060U CN 203737962 U CN203737962 U CN 203737962U
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China
Prior art keywords
hang plate
passage
semi
smelting
solid slurry
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Expired - Fee Related
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CN201320671060.7U
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Chinese (zh)
Inventor
周荣锋
王慧
蒋业华
周荣
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Abstract

The utility model relates to a refining device for a metal solidification structure and belongs to the technical field of materials science. The refining device comprises a smelting device, a semi-solid slurry preparation device and a blank storage device, wherein the main body of the semi-solid slurry preparation device adopts an inclined plate in which a channel and a temperature control device are arranged; the channel in the inclined plate is 80-100 mm in length, 50-100 mm in width and 5-50 mm in height; the included angle between the channel in the inclined plate and the horizontal plane is 10-70 degrees after the inclined plate is fixed; an inlet in the upper end of the channel is connected to the melting device, and an outlet in the lower end of the channel is aligned with the blank storage device. The refining device is simple in structure, simple and convenient to operate and low in cost, and can be connected to subsequent molding equipment for directly machining castings.

Description

A kind of device of thinning metal solidification texture
Technical field
The utility model relates to a kind of device of thinning metal solidification texture, belongs to materials science field.
Background technology
Semisolid forming technique, be called for short SSM, the M.C.Flemings of Shi You Massachusetts Institute Technology proposes at 20 century 70s, this technology is in metal liquid solidification process, it is carried out vigorous stirring, disturbance, change grain refiner or carries out rapid solidification, change the forming core growth process of birth solid phase, the solid-liquid mixed slurry of certain spherical nascent solid phase that obtains suspending uniformly in a kind of liquid metal mother liquor.This semi-solid metal slurry has good mobility, is easy to make finished product by common processing method.
Semi-solid state forming technique is a kind of new technology of metal forming, compare with common forming technique, it has advantages of a lot of uniquenesses: (1) semi solid slurry does not exist gross segregation, and crystal grain is tiny, even, roundness is high, greatly reduced the crackle in foundry goods, cavity, the casting flaws such as component segregation, can obtain the foundry goods of high-quality; (2) the ratio of viscosities liquid metal of semi solid slurry is high, easily controls, and is difficult for splash during shaping, has improved stamp process, and that can reduce metal wraps up in gas and oxidation, the compactness of very high drip molding; (3) the stamp temperature of semi solid slurry is low, has reduced the thermic load of mould, thereby has increased the service life of mould; (4) heating semi-solid-state slurry is lower than the temperature of metal body, can save greatly the energy; (5) semi solid slurry shaping stress is low, and forming speed is high, and the complicated part that can be shaped, has shortened the process-cycle, has reduced production cost, has improved production efficiency, easily is automated.
In semi-solid state forming technique, key issue is exactly the semi solid slurry of preparation high-quality, and its core is how to obtain to have the semi solid slurry that waits axle, tiny, uniform non-brilliant primary phase.Current semi-solid pulping process mainly contains two large classes: a class is under external force and External Electrical Field, to break the dendrite being shaped, and mainly comprises mechanical mixing method, electromagnetic stirring method, strain-induced melt activation method, spray deposition, Isothermal Hot facture, hang plate cooling method etc.; Another kind of is to suppress by controlling process of setting the method that dendrite is shaped, and mainly comprises additive method etc.The various methods of preparing semi solid slurry each own oneself pluses and minuses all, are also widely used in the research and preparation of metal material above.Up to the present, Semi-solid Metals Forming Techniques has been widely used in aluminium base and magnesium base alloy.
Hang plate cooling method is that 1996 Nian You Ube Co., Ltd. utility models are for the manufacture of the new technology of aluminium alloy and magnesium alloy semisolid slurry, the forming process of the method is: by the hang plate cooling body of making via graphite or steel alloy higher than the metal liquid stream of a certain temperature of molten metal phase line, by the chilling action of cooling body, the quick forming core of molten metal is grown up, and due to constantly shearing mutually, collision, the friction of the inner intercrystalline of metal bath in the process in trickling, finally obtain tiny, uniform spherical proeutectic tissue.This know-why has simple process, equipment cost is low, floor space is little, production efficiency advantages of higher, and being easy to the advantages such as realization is that other technologies are incomparable.
Its core technology of method of utilizing hang plate to prepare semi solid slurry is to be by controlling the pouring temperature of molten metal, angle between hang plate and horizontal plane, hang plate length, the axle such as whether hang plate is carried out to the technological parameters such as preheating and preheat temperature obtain, tiny, the semi solid slurry of uniform non-dendrite primary phase.So the principle that can utilize this principle that hang plate is manufactured to semi solid slurry applies in metal grain refinement.Up to the present, the method for crystal grain thinning is all by external energy both at home and abroad, as: vibration, stirring, convection current and ultrasonic wave processing etc.; Or add some inovulants to increase the object that non-spontaneous nucleation reaches crystal grain thinning.But the equipment that external energy demand is special is difficult to realize in actual industrial production; Add inovulant cost high, complex process and can make foreign particle in molten metal, is mingled with increase, reduces the plasticity of metalwork after being shaped.
Utility model content
In order to prepare the tiny metal solidification texture that does not affect metalwork performance under simple appointed condition, the utility model proposes a kind of device of thinning metal solidification texture.
Apparatus structure of the present utility model comprises smelting apparatus, semi-solid slurry preparation device and holds blank device, the main body of semi-solid slurry preparation device is that inside has passage and with the hang plate 14 of temperature regulating device, the length of hang plate 14 inner passages is that the width of 80~100mm, passage is 50~100mm, is highly 5~50mm, and after hang plate 14 is fixing, the angle of inner passage and horizontal plane is 10~70 °; The upper end entrance of passage is connected with smelting apparatus, lower end outlet is aimed at and held blank device 3.
Described hang plate 14 is 10~70 ° with the angle of horizontal plane, and inner passage arranges the deviation angle of 3~10 ° from top to down, is convenient to cleaning.
The temperature regulating device of described hang plate 14 is at the inside of hang plate 14 having heaters 8 and conduction oil 9, and the top and bottom of hang plate are separately installed with oil-out 6 and oil-in 12, and there are thermocouple 10 temperature controls hang plate inside.
Described smelting apparatus is that holding furnace 4 inside are placed with crucible 2, and the bottom of crucible 2 is by tapered rod 1 gauge tap, and smelting apparatus imports hang plate device by funnel 3 by molten metal 5.
Described hang plate 14 is fixed on ground by support 11.
The utility model for method be by metal liquid stream through one with preheating device, and the hang plate that ramp way is shorter, chilling action due to hang plate, it is excessively cold that molten metal is subject to the degree of depth on hang plate, the a large amount of forming cores of metal bath, now because ramp way is shorter, the cool time that melt is subject to is shorter, the nucleus major part forming fast also has little time to grow up and has just departed from hang plate, so the crystal grain obtaining is tiny, and by conduction oil, the temperature of hang plate is controlled, prevent that hang plate from heating up, guaranteed the chilling action that it is lasting, in continuous casting process, constantly obtain tiny, rounding, organize uniformly.Obtain fine tissue and by various forming methods, obtain the foundry goods of superior performance later.
The device of the thinning metal solidification texture that the utility model provides, its core is to utilize hang plate as the cooling body of thinning metal solidification texture, on hang plate, trickling has molten metal, hang plate be in cuboid inside, open with each semi-enclosed passage, in order to be provided with the tapering that angle is 3~10 degree on easy cleaning hang plate later, hang plate is to be made by 45 steel, on each surface of ramp way inside, all scribble graphite paint, in the bottom of hang plate, be provided with the incubator of an inner having heaters, the top of incubator is provided with oil-out, there is oil-in below, side is also provided with thermocouple the conduction oil in incubator is carried out to thermometric, the below of hang plate is connected with tank or former, upper end is connected with the sprue gate of temperature adjustment casting equipment, temperature adjustment casting equipment is the equipment that existing inclined plane method is prepared semi solid slurry, comprise body of heater, be located at crucible and the tapered rod of being located at body of heater top in body of heater, the angle of inclination on affiliated hang plate and ground is adjustable, angle is controlled at 10~70 °, by support 11, controlled, as Fig. 1, Fig. 2.
During work: melted molten metal is poured in crucible 2, by being connected to the temperature of the temperature control system monitoring molten metal on holding furnace, when the temperature of molten metal reaches more than liquidus temperature 30~100 ℃, by lift tapered rod in holding furnace by pouring metal melt in funnel, molten metal down flows from funnel, flows on hang plate and along hang plate and trickles downwards, finally flow in tank or shaped device, obtain tiny, rounding, uniformly metal solidification texture.
By the example of implementing, the effect method of this device is further described below.The selection of material is rich chromium cast iron, technological parameter: hang plate length is 100mm, and pouring temperature is 1350~1450 ℃, and hang plate angle of inclination is 10 0~70 0, hang plate preheat temperature is 25~150 ℃.
According to the embodiment of above-mentioned process parameters range, see the following form:
By the cooling rear sampling of the rich chromium cast iron of above-mentioned example gained, be prepared into after metallographic specimen at its tissue of metallography microscope Microscopic observation.The hypereutectic high chromium cast iron of gained and routine casting hypereutectic high chromium cast iron are sampled, microscopic structure comparative analysis can be reached a conclusion: the microscopic structure of the primary carbide of the hypereutectic high chromium cast iron after processing by hang plate device is much thinner than routine casting hypereutectic high chromium cast iron, has reached the object of crystal grain thinning.
The beneficial effects of the utility model are:
(1) apparatus structure is simple, simple to operation, and equipment cost is low, can be connected with follow-up former, directly processes foundry goods;
(2) metal liquid stream is through the hang plate initial stage, hang plate temperature is lower, it is excessively cold that the metal liquid stream of high temperature is subject to the degree of depth on hang plate, melt rapid, high volume forming core, because hang plate is shorter, the cool time that melt is subject to is shorter, and the nucleus major part forming fast has little time to grow up at all and just departs from hang plate, and organizing of therefore obtaining is more tiny;
(3) by the incubator under hang plate, its temperature is controlled, prevented from impelling newborn nuclei growth because hang plate temperature raises;
(4) because whole hang plate when the casting of molten metal is almost in full closeding state, metal liquid stream contacts with air hardly during hang plate, so this hang plate device can prevent the oxidation of molten metal, can provide for follow-up processing the metal paste of high-quality.
Accompanying drawing explanation
Fig. 1 is the utility model device overall structure schematic diagram;
Fig. 2 is the utility model hang plate cross-sectional schematic.
In figure: 1-tapered rod, 2-crucible, 3-funnel, 4-holding furnace, 5-molten metal, 6-oil-out, 7-incubator, 8-heater, 9-conduction oil, 10-thermocouple, 11-support, 12-oil-in, 13-hold blank device, 14-hang plate.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment one: as shown in Fig. 1~2, the apparatus structure of present embodiment is: comprise smelting apparatus, semi-solid slurry preparation device and hold blank device, the main body of semi-solid slurry preparation device is that inside has passage and with the hang plate 14 of temperature regulating device, and the length of hang plate 14 inner passages is that the width of 100mm, passage is 50mm, is highly 50mm; The upper end entrance of passage is connected with smelting apparatus, lower end outlet is aimed at and held blank device 3.Hang plate 14 is 10 ° with the angle of horizontal plane, and inner passage arranges the deviation angle of 3 ° from top to down, is convenient to cleaning.The temperature regulating device of hang plate 14 is at the inside of hang plate 14 having heaters 8 and conduction oil 9, and the top and bottom of hang plate are separately installed with oil-out 6 and oil-in 12, and there are thermocouple 10 temperature controls hang plate inside.Smelting apparatus is that holding furnace 4 inside are placed with crucible 2, and the bottom of crucible 2 is by tapered rod 1 gauge tap, and smelting apparatus imports hang plate device by funnel 3 by molten metal 5.Hang plate 14 is fixed on ground by support 11.
Embodiment two: as shown in Fig. 1~2, the apparatus structure of present embodiment is: comprise smelting apparatus, semi-solid slurry preparation device and hold blank device, the main body of semi-solid slurry preparation device is that inside has passage and with the hang plate 14 of temperature regulating device, and the length of hang plate 14 inner passages is that the width of 98mm, passage is 100mm, is highly 5mm; The upper end entrance of passage is connected with smelting apparatus, lower end outlet is aimed at and held blank device 3.Hang plate 14 is 70 ° with the angle of horizontal plane, and inner passage arranges the deviation angle of 10 ° from top to down, is convenient to cleaning.The temperature regulating device of hang plate 14 is at the inside of hang plate 14 having heaters 8 and conduction oil 9, and the top and bottom of hang plate are separately installed with oil-out 6 and oil-in 12, and there are thermocouple 10 temperature controls hang plate inside.Smelting apparatus is that holding furnace 4 inside are placed with crucible 2, and the bottom of crucible 2 is by tapered rod 1 gauge tap, and smelting apparatus imports hang plate device by funnel 3 by molten metal 5.
Embodiment three: as shown in Fig. 1~2, the apparatus structure of present embodiment is: comprise smelting apparatus, semi-solid slurry preparation device and hold blank device, the main body of semi-solid slurry preparation device is that inside has passage and with the hang plate 14 of temperature regulating device, the length of hang plate 14 inner passages be the width of 80mm, passage be 60mm, highly for 5mm, after hang plate 14 is fixing, the angle of inner passage and horizontal plane is 60 °; The upper end entrance of passage is connected with smelting apparatus, lower end outlet is aimed at and held blank device 3.The temperature regulating device of hang plate 14 is at the inside of hang plate 14 having heaters 8 and conduction oil 9, and the top and bottom of hang plate are separately installed with oil-out 6 and oil-in 12, and there are thermocouple 10 temperature controls hang plate inside.Smelting apparatus is that holding furnace 4 inside are placed with crucible 2, and the bottom of crucible 2 is by tapered rod 1 gauge tap, and smelting apparatus imports hang plate device by funnel 3 by molten metal 5.Hang plate 14 is fixed on ground by support 11.
Embodiment four: as shown in Fig. 1~2, the apparatus structure of present embodiment is: comprise smelting apparatus, semi-solid slurry preparation device and hold blank device, the main body of semi-solid slurry preparation device is that inside has passage and with the hang plate 14 of temperature regulating device, the length of hang plate 14 inner passages be the width of 90mm, passage be 70mm, highly for 20mm, after hang plate 14 is fixing, the angle of inner passage and horizontal plane is 50 °; The upper end entrance of passage is connected with smelting apparatus, lower end outlet is aimed at and held blank device 3.The temperature regulating device of hang plate 14 is at the inside of hang plate 14 having heaters 8 and conduction oil 9, and the top and bottom of hang plate are separately installed with oil-out 6 and oil-in 12, and there are thermocouple 10 temperature controls hang plate inside.Smelting apparatus is that holding furnace 4 inside are placed with crucible 2, and the bottom of crucible 2 is by tapered rod 1 gauge tap, and smelting apparatus imports hang plate device by funnel 3 by molten metal 5.Hang plate 14 is fixed on ground by support 11.
Below by reference to the accompanying drawings the specific embodiment of the present utility model is explained in detail, but the utility model is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from the utility model aim, make various variations.

Claims (3)

1. the device of a thinning metal solidification texture, it is characterized in that: comprise smelting apparatus, semi-solid slurry preparation device and hold blank device, the main body of semi-solid slurry preparation device is that inside has passage and with the hang plate (14) of temperature regulating device, the length of hang plate (14) inner passage is that the width of 80~100mm, passage is 50~100mm, is highly 5~50mm, and after hang plate (14) is fixing, the angle of inner passage and horizontal plane is 10~70 °; The upper end entrance of passage is connected with smelting apparatus, lower end outlet is aimed at and held blank device (3).
2. the device of thinning metal solidification texture according to claim 1, is characterized in that: described hang plate (14) is 10~70 ° with the angle of horizontal plane, and inner passage arranges the deviation angle of 3~10 ° from top to down.
3. the device of thinning metal solidification texture according to claim 1, it is characterized in that: the temperature regulating device of described hang plate (14) is at the inside having heaters (8) of hang plate (14) and conduction oil (9), the top and bottom of hang plate are separately installed with oil-out (6) and oil-in (12), and there is thermocouple (10) temperature control hang plate inside.
CN201320671060.7U 2013-10-29 2013-10-29 Refining device for metal solidification structure Expired - Fee Related CN203737962U (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106623819A (en) * 2016-11-25 2017-05-10 昆明理工大学 Prepration method for semisolid alloy slurry
CN106825483A (en) * 2017-03-21 2017-06-13 昆明理工大学 A kind of method and device for preparing semi solid slurry
CN111375748A (en) * 2018-12-28 2020-07-07 井冈山大学 Vibration slope casting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106623819A (en) * 2016-11-25 2017-05-10 昆明理工大学 Prepration method for semisolid alloy slurry
CN106825483A (en) * 2017-03-21 2017-06-13 昆明理工大学 A kind of method and device for preparing semi solid slurry
CN111375748A (en) * 2018-12-28 2020-07-07 井冈山大学 Vibration slope casting device
CN111375748B (en) * 2018-12-28 2021-11-05 井冈山大学 Vibration slope casting device

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140730

Termination date: 20141029

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