CN207276685U - The device of the live ultrasonication molten iron of industry casting - Google Patents
The device of the live ultrasonication molten iron of industry casting Download PDFInfo
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- CN207276685U CN207276685U CN201721149803.9U CN201721149803U CN207276685U CN 207276685 U CN207276685 U CN 207276685U CN 201721149803 U CN201721149803 U CN 201721149803U CN 207276685 U CN207276685 U CN 207276685U
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- ultrasonic
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- ultrasonication
- iron
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Abstract
The utility model provides a kind of device of the live ultrasonication molten iron of industry casting.The device is made of smelting apparatus, nodularization bag, transfer device, ultrasonic processing apparatus and casting device.The utility model passes through the special designing to ultrasonic processing apparatus, it is set to act synergistically with nodularization bag, ultrasonication is carried out to spheroidization molten iron, slagging-off is played to molten iron, the catharsis of degasification can significantly refine the size of graphite nodule in Microstructure of Ductile Iron at the same time, reduce pearlite piece interlamellar spacing, structural homogenity is improved, improves the mechanical property of spheroidal graphite cast-iron.The utility model combination industry casting on-site actual situations specially devise the device suitable for ultrasonication molten iron, and apparatus structure design is reasonable, supersound process is more easily applied to production line, is conducive to batch processing.
Description
Technical field
The utility model belongs to technical field of metal material preparation, in particular to a kind of industry casting scene ultrasound
Ripple handles the device of molten iron.
Background technology
It is well known that the factor for influencing casting product quality is very much, such as moulding, technological process, raw material quality, worker
Quality, molten steel quality, heat treatment process, Mechanical processing of casting etc., but molten steel quality is an important factor for influencing casting quality.Iron
Water has various pernicious gases and various nonmetal inclusions during melting, quenched, the various metallic elements of addition in molten iron
Due to factors such as material property, fusing point, density, granule sizes during thing, and some metallic elements of addition, it is difficult to ensure it
In molten iron uniform melt.Therefore, the research of molten iron purification and structural homogenity becomes the main direction of production premium casting.
Sonication techniques are by the ultrasonic wave that the molten metal of molten condition imports frequency height, energy is concentrated, having
Notable crystal grain thinning, the effect for improving material internal quality and performance.It is a kind of green, section that supersound process is carried out to liquid metal
Energy, environmentally friendly, efficient, safe and economic processing mode.
But industry casting site environment is complicated, molten iron temperature is up to 1500 DEG C, to the high temperature resistant and corrosion resistant of ultrasonic probe
Lose that performance requirement is high, and traditional metal materials are difficult to meet the requirements, even if avoiding corroding using cermet, still suffer from processing,
Assembling is difficult and the problem of brittle failure easily occurs.And easy Vltrasonic device processing industry casting scene is large-scale to pour by applying
Iron clad aqueous fusion body, its sphere of action is extremely limited, and ultrasonic power decay is serious under high temperature action, it is difficult to effectively handles metal
Melt.In addition, also need to consider to carry out effective ultrasonication to molten iron in the case where not influencing existing casting technique.Therefore,
It is applied to production line, the ultrasonication molten iron device beneficial to batch processing there is an urgent need for convenient in the prior art.
Utility model content
In order to make up for the deficiencies of the prior art, the utility model provides a kind of live ultrasonication molten iron of industry casting
Device.
The device is connected with casting device and formed by smelting apparatus, nodularization bag, transfer device, ultrasonic processing apparatus successively.
The ultrasonic processing apparatus include counterweight, stent, cylinder, piston rod, apart from device for limiting, balancing pole, wind, heat-insulating shield,
Chain gearing, rolling bearing, rotating bar, ultrasonic transducer, ultrasonic transformer, ultrasonic unit probe and ultrasonic wave occur
Device.The cylinder is placed in cradle top and is secured to connect；Piston rod is connected with balancing pole, by controlling switching cylinder to make piston
Bar drives balancing pole to move up and down；It is welded on apart from device for limiting below the top plate of stent, with control piston bar and balancing pole
Displacement distance；The side of balancing pole is counterweight to keep balancing pole horizontality, and opposite side passes through rolling bearing and connects with rotating bar
Connect；Rotating bar is connected with wind by chain gearing, drives rotating bar to rotate by the uniform velocity shaking wind；Rotating bar
The other end is connected fixation with heat-insulating shield；Ultrasonic transducer, ultrasonic transformer and ultrasonic unit probe are sequentially connected and are placed on thermal insulation
The top of plate, the supersonic generator are connected with ultrasonic transducer.
Preferably, the smelting apparatus is medium-frequency induction furnace.
Preferably, the nodularization bag is " teapot bag " pattern.
Preferably, the transfer device includes overhead traveling crane and fork truck.
Preferably, the casting device includes pouring truck and device for sand coated iron mould casting mold.
Preferably, it is a diameter of being processed respectively at heat-insulating shield center 85mm and 240mm in the ultrasonic processing apparatus
The circular hole of 90mm.
Preferably, the supersonic generator can connect two or more ultrasonic transducers, improve ultrasonic wave
Processing power and sphere of action.
Preferably, ultrasonic unit probe material is high strength graphite, diameter 20-50mm, length 200-600mm.
The ultrasonic unit probe of graphite material has the characteristics that high temperature resistant, the burn into of resistance to molten iron easy processing.
The processing method is：Furnace charge is placed in melting in smelting apparatus, is carried out after melting in nodularization bag at nodularization
Nodularization bag, is transported to below ultrasonic processing apparatus, ultrasonic processing apparatus, which moves down, makes ultrasonic probe stretch into ball by reason by transfer device
Change below melt liquid level 30-500mm in bag to be ultrasonically treated the molten iron after nodularization, adjust ultrasonic technique parameter, utilize
The cavitation of ultrasonic wave realizes the catharsis to molten iron.
Compared with prior art, the beneficial effects of the utility model are：
The utility model makes it act synergistically with nodularization bag, to nodularization iron by the special designing to ultrasonic processing apparatus
Water carries out ultrasonication, ultrasonic wave is produced cavitation bubble inside metal bath, the high pressure that cavitation follicular rupture produces, can break
Broken dendrite, plays the role of stirring.Meanwhile the increase of cavitation bubble and the evaporation of liquid can take away substantial amounts of heat, so as to be formed
Local overcooling, makes cavitation bubble be formed about nucleus, nucleation rate increase, plays molten iron slagging-off, the catharsis of degasification at the same time may be used
Significantly to refine the size of graphite nodule in Microstructure of Ductile Iron, reduce pearlite piece interlamellar spacing, improve structural homogenity, carry
The mechanical property of high spheroidal graphite cast-iron.The utility model combines industry casting on-site actual situations and specially devises suitable for ultrasonic wave
The device of molten iron is handled, apparatus structure design is reasonable, supersound process is more easily applied to production line, is conducive at batch
Reason.
Brief description of the drawings
Fig. 1 is the utility model ultrasonic processing apparatus structure diagram；
In figure：1st, counterweight, 2, stent, 3, cylinder, 4, piston rod, 5, apart from device for limiting, 6, balancing pole, 7, wind,
8th, heat-insulating shield, 9, chain gearing, 10, rolling bearing, 11, rotating bar, 12, ultrasonic transducer, 13, ultrasonic transformer, 14, super
Acoustic wave device is popped one's head in, and 15, supersonic generator.
Fig. 2 is the influence figure being ultrasonically treated in the embodiment of the present invention 2 to ductile cast iron casting graphite nodule size；
Fig. 3 is the influence figure being ultrasonically treated in the embodiment of the present invention 2 to ductile cast iron casting pearlite lamellar spacing.
Embodiment
The utility model is described in detail below by attached drawing 1 and specific embodiment, but does not limit the scope of protection of the utility model.
Embodiment 1
The device of the live ultrasonication molten iron of industry casting, successively by smelting apparatus, nodularization bag, transfer device, ultrasound
Processing unit connects composition with casting device.The ultrasonic processing apparatus includes counterweight 1, stent 2, cylinder 3, piston rod 4, distance
Device for limiting 5, balancing pole 6, wind 7, heat-insulating shield 8, chain gearing 9, rolling bearing 10, rotating bar 11, ultrasonic waves
Can device 12, ultrasonic transformer 13, ultrasonic unit probe 14 and supersonic generator 15.The cylinder 3 is placed in the top of stent 2, adopts
It is threadedly coupled fixation；Cylinder piston rod 4 is connected with balancing pole 6 using welding manner, by controlling switching cylinder cylinder is lived
Stopper rod 4 drives balancing pole to move up and down；It is welded on apart from device for limiting 5 below 2 top plate of stent, with control piston bar 4 and balance
The displacement distance of bar 6；6 side of balancing pole is counterweight to keep balancing pole horizontal, and opposite side passes through rolling bearing and rotating bar 11
Connection；Rotating bar 11 is connected with wind 7 using chain gearing 9, and 11 turns of rotating bar is driven by the uniform velocity shaking wind
It is dynamic；The lower section of rotating bar 11 is threadedly connected fixation with heat-insulating shield 8；It is straight apart from 8 center 85mm and 240mm processing of heat-insulating shield
Footpath is the circular hole of 90mm；The one knot that ultrasonic transducer 12, ultrasonic transformer 13 and ultrasonic unit probe 14 are connected through a screw thread
Set up above heat-insulating shield 8.
It is as follows using above device processing method：
S1. composition proportion：By weight percentage, C：3.5-3.9%, Si：1.7-2.1%, Mg：0.03-0.05%,
Cu：0.2-1.0%, Mn：0.3-0.6%, S ＜ 0.025%, P:＜ 0.06%, Re：0.012-0.015%, other impurities always contain
Amount≤0.02-0.05%, surplus Fe；
S2. furnace charge is matched：The low S steel scraps 5% of low P and iron filings 10%, foundry returns 35%, remaining is high-purity pig iron, by step
S1 composition proportions are as furnace charge；
S3. melting and refining：Molten iron is obtained using medium-frequency induction furnace melting batch, work is added by step S1 composition proportions
Industry ferromanganese, industrial ferrosilicon and the uniform melting of cathode copper, come out of the stove, tapping temperature is after desulfurizing and refining：1450℃；
S4. spheroidising：Z6S nodulizers are selected, additional proportion 0.9%, obtains molten iron after nodularization；
S5. nodularization bag is transported to 14 lower section of ultrasonic unit probe, ultrasonic unit 14 diameters of probe using transfer device
30mm, length 500mm；
S6. rotate clockwise cylinder 3 to switch, piston rod 4 promotes balancing pole 6 to decline, and stretches into ultrasonic unit probe 14
Melt liquid level 200mm in nodularization bag；
S7. open supersonic generator 15 to switch, adjust ultrasonic technique parameter, the ultrasonic technique parameter：
18.6KHz, ultrasonic power 600W, processing time 3min, applying mode apply to be continuous；
S8. wind 7 is at the uniform velocity shaken with 10 revs/min of speed, heat-insulating shield 8 and ultrasonic wave is made by chain gearing 9
Device probe 14 rotates, and expands and is ultrasonically treated scope；
S9. every 30 seconds of 7 shaking direction of wind is alternately once；
S10. to the end of molten iron is ultrasonically treated, close supersonic generator 15 and switch, rotary cylinder 3 counterclockwise switchs, living
Stopper rod 4 drives balancing pole 6 to rise, and ultrasonic unit probe 14 is risen at the nodularization side of wrapping 300mm；
S11. inoculation：75Si-Fe inovulants are selected, by the way of current-following inoculation, inovulant granularity is 0.2-
0.5mm, addition 0.3-0.5kg/min, total amount are no more than 0.6%；
S12. by molten iron injection device for sand coated iron mould casting-up shaping, pouring temperature is 1410 DEG C, is unpacked after cooling, obtains ball
Black iron casting.
The spheroidal graphite cast-iron obtained to embodiment 1 is tested for the property, and after testing, the spheroidal graphite cast-iron component of acquisition is C：
3.63%, Si：1.93%, Mg：0.05%, Cu：0.46%, Mn：0.52%, S：0.014%, P：0.036%, Re：
0.013%, surplus Fe.In nodularization bag to molten iron implement ultrasonication purification after, in molten iron aluminium element content by
0.0073% drops to 0.0031%.The reason for aluminium content reduces in molten iron in nodularization bag after sonicated purification, it is former
Some alundum (Al2O3) field trashes are excluded, so that aluminium content is remarkably decreased.And rejection rate drops because being mingled with, caused by slag inclusion
Low 70%.Gas content is as shown in table 1 in molten iron before and after supersound process, and after supersound process, gas content significantly drops in molten iron
It is low.
Table 1 is ultrasonically treated gas content in front and rear molten iron
After the influence to ductile cast iron casting graphite nodule size is ultrasonically treated as shown in Fig. 2, being ultrasonically treated, graphite
Ball size is substantially refined.It is ultrasonically treated influence such as Fig. 3 to ductile cast iron casting pearlite lamellar spacing
Shown, after supersound process, microscopic structure medium pearlite lamellar spacing reduces, crystal grain refinement.Ball after supersound process
Black iron casting mechanical property it is as shown in table 2, after supersound process, the intensity of ductile cast iron casting is
862-880MPa, elongation 4.9-6.7%, higher than the ductile cast iron casting intensity for not applying supersound process
788MPa, elongation 2.7%.
Ductile cast iron casting mechanical property after table 2 is ultrasonically treated
Claims (8)
1. the device of the live ultrasonication molten iron of industry casting, it is characterised in that the device is successively by smelting apparatus, nodularization
Bag, transfer device, ultrasonic processing apparatus and casting device connect composition；
The cylinder (3) of the ultrasonic processing apparatus is placed at the top of stent (2) and is secured to connect；Piston rod (4) and balancing pole (6)
Connection, by controlling cylinder (3) switch to make piston rod (4) drive balancing pole (6) to move up and down；Welded apart from device for limiting (5)
Below the top plate of stent (2), with the displacement distance of control piston bar (4) and balancing pole (6)；The side of balancing pole (6) be with
To keep balancing pole horizontality, opposite side is connected weight (1) by rolling bearing (10) with rotating bar (11)；Rotating bar (11) with
Wind (7) is connected by chain gearing (9), drives rotating bar (11) to rotate by the uniform velocity shaking wind (7)；Rotate
Bar (11) other end is connected fixation with heat-insulating shield (8)；Ultrasonic transducer (12), ultrasonic transformer (13) and ultrasonic unit probe
(14) top for being placed on heat-insulating shield (8) is sequentially connected, supersonic generator (15) is connected with ultrasonic transducer (12).
2. device according to claim 1, it is characterised in that the smelting apparatus is medium-frequency induction furnace.
3. device according to claim 1, it is characterised in that the nodularization bag is " teapot bag " pattern.
4. device according to claim 1, it is characterised in that the transfer device includes overhead traveling crane and fork truck.
5. device according to claim 1, it is characterised in that the casting device includes pouring truck and device for sand coated iron mould is cast
Type.
6. device according to claim 1, it is characterised in that in the ultrasonic processing apparatus, in heat-insulating shield (8)
The circular hole of a diameter of 90mm is processed at the heart 85mm and 240mm respectively.
7. device according to claim 1, it is characterised in that the supersonic generator (15) can connect two or two
A above ultrasonic transducer (12).
8. device according to claim 1, it is characterised in that described ultrasonic unit probe (14) material is high intensity stone
Ink, diameter 20-50mm, length 200-600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149803.9U CN207276685U (en) | 2017-09-08 | 2017-09-08 | The device of the live ultrasonication molten iron of industry casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149803.9U CN207276685U (en) | 2017-09-08 | 2017-09-08 | The device of the live ultrasonication molten iron of industry casting |
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| Publication Number | Publication Date |
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| CN207276685U true CN207276685U (en) | 2018-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109295280A (en) * | 2018-11-24 | 2019-02-01 | 宁波市神光电炉有限公司 | A kind of exclusion device and impurity-removing method of medium frequency induction melting furnace |
| CN111041288A (en) * | 2019-12-18 | 2020-04-21 | 江苏大学 | High-toughness anti-fatigue in-situ aluminum-based composite material and preparation method thereof |
-
2017
- 2017-09-08 CN CN201721149803.9U patent/CN207276685U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109295280A (en) * | 2018-11-24 | 2019-02-01 | 宁波市神光电炉有限公司 | A kind of exclusion device and impurity-removing method of medium frequency induction melting furnace |
| CN111041288A (en) * | 2019-12-18 | 2020-04-21 | 江苏大学 | High-toughness anti-fatigue in-situ aluminum-based composite material and preparation method thereof |
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