CN102139356A - Device for purifying and stirring non-ferrous metal liquid - Google Patents
Device for purifying and stirring non-ferrous metal liquid Download PDFInfo
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- CN102139356A CN102139356A CN201010578099.5A CN201010578099A CN102139356A CN 102139356 A CN102139356 A CN 102139356A CN 201010578099 A CN201010578099 A CN 201010578099A CN 102139356 A CN102139356 A CN 102139356A
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Abstract
The invention discloses a device for purifying and stirring non-ferrous metal liquid, which comprises a support, a rolling wheel arranged under the support, a handle at the tail end of the support and the like, wherein a degassing pipe is arranged on the support; the tail end of the degassing pipe is connected with a graphite rod which is provided with an air vent; a multi-level heating device is arranged on the degassing pipe; the degassing pipe is communicated with a vent control valve assembly in series; the vent control valve assembly comprises a plurality of vent valves in parallel mutually; an air inlet of the vent control valve assembly is communicated with an inert gas conduit; and a flowmeter, a circuit control device for controlling the ventilation volume and the heating volume and a control panel are arranged at appropriate positions of the support. Compared with the products in the prior art, the cast molding non-ferrous metal ingot which is refined by utilizing the device provided by the invention has the advantages that: the hydrogen content of alloy is obviously reduced and can reach to 0.10cc/100g aluminium; the rate of removing impurities in the alloy, that is an impurity removing rate can be enhanced by 10% compared with that of the products processed by using the prior art; and as the hydrogen content and the impurity are reduced, the comprehensive property of the alloy can be enhanced by 10% compared with the prior art.
Description
Technical field
The present invention relates to a kind of non-ferrous metal liquid purification agitating device that stirs usefulness that non-ferrous metal liquid in the cast molding forehearth is purified.
Background technology
At present, the smelting of light metal and product processing-with the smelting of aluminum or aluminum alloy product, be processed as the master, its operation roughly is such: earlier raw material is smelted fusing, alloying then, aluminum alloy melt carries out dehydrogenation by feed inert gas in smelting furnace, removes the purification stirring that is mingled with in stove after alloying be refining procedure, after leaving standstill, detect in aluminum alloy melt density and the alloy liquid hydrogen content index qualified after, but the tapping casting moulding.It is a very important operation that metal liquid carries out refining, the main task of this operation is that the hydrogen in the alloy liquid is removed, simultaneously can be with the part inclusion removal in the alloy, can also stir alloy liquid, make the composition and the temperature of alloy liquid more even, for producing high-quality, the alloy of high cleanliness lays the first stone.Use the principle of inert gas dehydrogenation to be: when inert gas is fed melt inside, the hydrogen dividing potential drop of inert gas inside is zero, the partial pressure difference that has hydrogen on the contact-making surface of inert gas and melt, the hydrogen that is dissolved in the melt can spread in inert gas, finally reaches balance.Behind the inert gas emersion bath surface, the hydrogen that diffusion is come in takes the gas compartment of bath surface to.According to diffusion law, for using inert gas concerning aluminium alloy carries out refining, suppose that al alloy component is certain, temperature is certain, the principal element that influences refining effect is as follows: 1, inert gas and melt contacted specific surface area are the contact area of unit mass gas and melt, specific area is big more, and the dehydrogenation effect is good more.2, the ascent rate of inert gas bubble; Bubble floating speed is slow, and bubble time of staying in melt is long more, and the dehydrogenation effect is good more.3, bubble diameter; The more little dehydrogenation effect of bubble diameter is good more.By the analysis to diffusion law, how obtaining diameter bubble little, that disperse as can be seen is the key technology that improves refining effect.Prior art is tiny in order to obtain, the bubble of dispersion, and Xian Jin technology is to use rotor to break up bubble technology, tiny aperture arrangement injection technology in the world.These two technique effects are more obvious, and hydrogen degassing efficiency is 10 tons/hour, and the hydrogen content of alloy can reach 0.15cc/100g aluminium after the dehydrogenation, remove inclusion rates 20%.
Its existence defective be: because dehydrogenation equipment and technology parameter request is very high, so complex structure, cost cost are higher, owing to being import equipment, inconvenient maintenance; The average gas consumption height of inert gas is about the 10Kg/ ton.
Summary of the invention
The present invention be directed to the deficiencies in the prior art, a kind of non-ferrous metal liquid dehydrogenation is provided, removes the inclusion rates height, non-ferrous metal liquid simple in structure, that cost is low, easy to maintenance purifies agitating device.
Technical solution of the present invention is achieved in that non-ferrous metal liquid purifies agitating device, by support, be positioned at the rolling wheel under the support and the compositions such as handle of support end, on support, be provided with gas removing pipe, gas removing pipe is terminal to be connected with the graphite rod that is provided with passage, on described gas removing pipe, be provided with several grades of heaters, the gas removing pipe connection of connecting with the breather valve group, the breather valve group is made up of several breather valves parallel with one another, breather valve group air inlet is communicated with the inert gas conduit, is provided with flowmeter and control throughput and the circuit control device and the control panel that add heat in the appropriate location of described support.
Described several grades of heaters are 3 grades of electric boiling plates by circuit control device control.
Between described handle and support, be connected with expansion link, on gas removing pipe, be provided with the length adjustment cover.
Described breather valve group is formed by 5 magnetic valves with the air inlet pipe that each magnetic valve is communicated with separately.
The invention has the beneficial effects as follows: adopt apparatus of the present invention can be achieved as follows effect: 1, can produce gas high temperature heat refining bubble.For the inert gas that is in room temperature, when it is passed into melt inside, the gas heat absorption, temperature is equal to melt temperature gradually, supposes that melt temperature is 720 ℃, is calculated as follows according to the carat imperial equation of uncle (The Ideal-Gas Equation):
R is a constant in the formula, under the certain situation of amount of substance n certain at pressure P, gas, with T
1=298K (room temperature), T
2Can draw in=993K (720 ℃) the substitution formula: when the volume of gas is room temperature in the time of 720 ℃ 3.33 times of gas volume.Therefore, after inert gas at room temperature fed melt inside, gas volume increased, become original 3.33 times, the very fast fusion of adjacent bubbles, the thing followed is exactly that bubble diameter increases, reduce with the melt contacted specific surface area, bubble floating speed increases, and the dehydrogenation effect of gas reduces greatly.Apparatus of the present invention make the temperature of inert gas be higher than melt temperature inert gas advanced line number level heating in air inlet pipe after the heating, opposite situation will occur.Such as inert gas being heated to 750 ℃, can finally become 720 ℃ after entering melt, can know that according to the imperial equation of carat uncle the gas of unit volume enters alloy melt after, volume can become original 0.97 times.It is big that the adjacent bubbles distance becomes relatively, is difficult for merging, and the thing followed is that bubble diameter reduces, and the inert gas and the melt contacted specific surface area of same unit volume increase greatly, and bubble floating speed reduces, and the dehydrogenation effect of gas improves greatly.Through facts have proved, 1, the bubble volume that adopts apparatus of the present invention to produce than the clarifier of prior art is little about 70%, and is very obvious for the effect that improves refining effect.2, can produce batch (-type) air feed bubble disintegration.Existing refining techniques all is to being blown into inert gas in the melt continuously, after inert gas enters melt by stone mill rod aperture, can form bubble, because being blown into continuously of gas, the distance of the bubble of formation can be very near, because the effect of aluminium liquid turbulent flow, a lot of bubbles can bump together, so just formed and closed the bubble phenomenon, the original less bubble of diameter has formed the bigger bubble of diameter, has had a strong impact on the refining effect of inert gas.Apparatus of the present invention adopt the on-off circuit of high frequency conversion to control the breather valve group that is communicated with air inlet pipe, make inert gas enter melt and have formed the multiple plenum system that circulates of on-off-lead to when inner.When switch is in logical state, inert gas enters melt, and switch cuts out thereupon, and the gas of feeding forms bubble, and in melt, float, gas switch is opened then, and inert gas enters melt, because original bubble rises, so there has not been to close the possibility of bubble, reciprocation cycle makes the bubble of generation more tiny like this, and refining effect has obtained reinforcement.Gas enters melt with intermittent mode, makes melt inside produce turbulent flow, has promoted bubble to move in the horizontal of melt inside to inner dispersion of melt and bubble, has improved the time of bubble in the melt internal stops greatly, has further improved refining effect.Calculating through hydrodynamics, is under the condition of 0.3MPa feeding melt gas inside pressure, and the probability that the prior art purifier closes bubble is 30%, and increases with the melt degree of depth, and gas bears pressure and increases, and the probability that closes bubble increases.Use apparatus of the present invention, as long as the frequency of HF switch is enough high, the probability that closes bubble can level off to zero, closes the effect that has improved refining to a great extent that is reduced in of bubble probability.Pilot production proves: adopting apparatus of the present invention hydrogen degassing efficiency is 15 tons/hour, and the hydrogen content of alloy can reach 0.10cc/100g aluminium after the dehydrogenation, removes inclusion rates 30%.Simultaneously, apparatus of the present invention are simple in structure, and are easy to maintenance, and cost only is 1/10th of an import equipment.The average gas consumption of inert gas reduces, and is about the 5Kg/ ton.The non-ferrous ingot of cast molding is compared with prior art products after the refining of employing apparatus of the present invention:
1. the hydrogen content of alloy obviously reduces, and can reach 0.10cc/100g aluminium.
2. the field trash that removes alloy promptly removes inclusion rates and compares lifting 10% with the product that prior art is handled.
3. because hydrogen content and field trash reduce, the combination property of alloy promotes 10% than prior art.
Description of drawings
Fig. 1 purifies the agitating device structural representation for non-ferrous metal liquid.
Fig. 2 purifies graphite rod structural representation in the agitating device for non-ferrous metal liquid.
Fig. 3 purifies agitating device control circuit schematic diagram for non-ferrous metal liquid.
Among the figure: 1. graphite rod, 2. gas removing pipe is 3. adjusted cover, 4. breather valve group air inlet, 5. wheel, 6. breather valve group, 7. flowmeter, 8. support, 9. expansion link, 10. handle.
The specific embodiment
As shown in the figure, non-ferrous metal liquid purifies agitating device, by support (8), be positioned at the terminal handle (10) of rolling wheel (5) under the support (8) and support (8) etc. and form, on support (8), be provided with gas removing pipe (2), gas removing pipe (2) is terminal to be connected with the graphite rod that is provided with passage (1), be provided with three grades of heaters on described gas removing pipe (2), the number of heater can suitably increase and decrease with the setting value of intake air temperature or the watt level of heater, is generally one to three grade.Gas removing pipe (2) connection of connecting with breather valve group (6), breather valve group (6) is made up of two to five breather valves parallel with one another, and present embodiment is five.Breather valve group air inlet (4) is communicated with the inert gas conduit, is provided with flowmeter (7) and control throughput and the circuit control device and the control panel that add heat in the appropriate location of described support (8).Between described handle (10) and support (8), be connected with expansion link (9), on gas removing pipe (2), be provided with length adjustment cover (3).Circuit control that present embodiment provides below and explanation be integrality and the operability in order to prove the present patent application scheme only; the those skilled in the art of appliance field need not spend creative work just can propose a plurality of multi-form circuit implementations, as long as but adopted structure of the present invention, structure all to drop in the protection domain of the present invention.
Combined circuit figure, the course of action of apparatus of the present invention is: circuit breaker Q F, QF1, QF2, QF3, QF4, QF5 in the closed control cabinet.
Manually control procedure and principle are as follows:
1, on touch-screen, " manually operation/operation automatically " gauge tap is forwarded to manual position; On touch-screen, show " manually operation indication " this moment;
2, on touch-screen, in " setup parameter " hurdle, set nitrogen flow, degasification time, one-level heating-up temperature, secondary heating-up temperature, three grades of heating-up temperatures;
3, press " start button " or " start button " SF on the control cabinet panel on the touch-screen, this moment Programmable Logic Controller PLC[model: S7200CN (CPU-224XP CN) Siemens (China) Co Ltd makes] on input point I0.1 connect, run signal is by the locking of PLC internal processes, and system brings into operation.The PLC program can be controlled being switched on or switched off of output point Q0.0, Q0.1 on the PLC, Q0.2, Q0.3, Q0.4 automatically according to the nitrogen flow of setting, thus the unlatching quantity of magnetic valve HX1, HX2, HX3, HX4, HX5 in the control breather valve group (6).And in the PLC program, be set with states such as certain hour control magnetic valve standard-sized sheet or complete shut-down, produce pulse of nitrogen, thereby produce mixing effect.When arriving the degasification setting-up time, out of service automatically.Under running status, press " stopping knob " or " stopping knob " SS on the control cabinet panel on the touch-screen, PLC input point I0.2 closure, the PLC program makes system out of service.
One-level heating principle: by (WRN-3300-1300 ℃ of the thermocouple that is installed on the one-level heating part, Beijing automatic instrument two factories) detect the one-level heating-up temperature, its temperature signal is sent into thermocouple module (manufacturing of model EM231CNTC Siemens (China) Co Ltd) the input A+ (+101) on the PLC, A-(101), PLC compares through automatic conversion back and the temperature value of setting that needs, through the PID computing, with result of calculation from PLC analog quantity output point M (11), I (+11) outputs signal to the primary input end 10 (11) on the silicon controlled power modulation trigger JK1,11 (+11), trigger end 1 (1G1) by silicon controlled power modulation trigger JK1,2 (1G2) send the control end 1G1 that controls signal to bidirectional triode thyristor K1,1G2, the angle of flow of control controllable silicon K1, thereby the terminal voltage on the control one-level heating element heater JR1, heat, make actual temperature and design temperature more and more approaching.When actual temperature and design temperature differed above certain value and overlong time, its temperature approach and time were set in program, and the PLC program makes the Q0.5 closure, sends the sound and light alarm signal, and showed " one-level fuser malfunction " on touch-screen.When heating element heater unusual, make when electric current increases, the warning output 16 (I0.4) of silicon controlled power modulation trigger JK1,15 (N12) closure, make the switching value input point I0.4 closure of PLC, the PLC program makes the Q0.5 closure, send the sound and light alarm signal, and on touch-screen, show " one-level fuser malfunction ".Press " sound equipment releasing " or " sound equipment releasing " the knob FA on the control cabinet panel on the touch-screen, can remove audible alarm.
Secondary heats, three grades of heating principles are identical with one-level heating principle, and just analog quantity output uses analog output module EM232CN[Siemens (China) Co Ltd to make] control.
4, the hydrogen content signal of being measured by online hydrogen meter (manufacturing of Shenzhen Pai Ruike metallurgical equipment Co., Ltd) the A+ end (PIC1+), the M that are input to the analog quantity input on the PLC holds (PIC-), can show in real time on touch-screen after the PLC computing.Degasification also has real-time demonstration running time on touch-screen.The degasification time arrives, and is out of service automatically, stops each section heating, turn-offs magnetic valve, and the concurrent visual alarm of speaking reminds the operator in time to carry out further work.Nitrogen flow is held (PIC-) by B+ end (PIC2+), the M that the flow transmitter in the system of being contained in is input to the analog quantity input on the PLC, nitrogen pressure is input to switching value input point I0.7 on the PLC by the pressure switch YK in the system of being contained in, when nitrogen flow or pressure anomaly, program makes the Q0.5 closure, sends sound and light alarm.Being provided with " suddenly stopping knob " on the touch-screen and on the control cabinet panel, under the state of emergency, press and self-locking, PLC switching value input point I0.0 closure, PLC programme-control whole system is out of service.
Automatic control process and principle are as follows:
1, on touch-screen, " manually operation/operation automatically " gauge tap is forwarded to automated location; On touch-screen, show " operation indication automatically " this moment;
2, on touch-screen, in " setup parameter " hurdle, set hydrogen content requirement, degasification time, one-level heating-up temperature, secondary heating-up temperature, three grades of heating-up temperatures;
3, press " start button " or " start button " SF on the control cabinet panel on the touch-screen, the input point I0.1 on the PLC connects, and run signal is by the locking of PLC internal processes, and this moment, system began automatic operation.The hydrogen content signal of being measured by online hydrogen meter is input to the A+ end (PIC1+) that the analog quantity on the PLC is imported, the hydrogen content of the automatic relatively setting of PLC and the difference of the actual hydrogen content that detects by online hydrogen meter, PLC compares through automatic computing and with the hydrogeneous value of the needs of setting, automatically regulate nitrogen flow by PLC, output point Q0.0, the Q0.1 of control on the PLC, Q0.2, Q0.3, Q0.4 are switched on or switched off, thus the unlatching quantity of magnetic valve HX1, HX2, HX3, HX4, HX5 in the control breather valve group (6).And the hydrogen content of actual at any time hydrogen content and setting, in time adjust nitrogen flow.In the PLC program, be set with states such as the control magnetic valve standard-sized sheet of certain hour or complete shut-down, produce pulse of nitrogen, produce mixing effect.When hydrogen content reaches when setting value, or when arriving the degasification setting-up time, out of service automatically.Under running status, press " stopping knob " or " stopping knob " SS on the control cabinet panel on the touch-screen, PLC input point I0.2 closure, the PLC program makes system out of service.
One-level heating principle: detect the one-level heating-up temperature by the thermocouple that is installed on the one-level heating part, its temperature signal is sent into thermocouple module (PLC thermocouple module EM231CNTC is produced by Siemens (China) Co Ltd) the input A+ (+101) on the PLC, A-(101), PLC compares through automatic conversion back and the temperature value of setting that needs, through the PID computing, with result of calculation from PLC analog quantity output point M (11), the primary input end 10 (11) of I (+11) output analog signals to the silicon controlled power modulation trigger JK1,11 (+11), trigger end 1 (1G1) by silicon controlled power modulation trigger JK1,2 (1G2) send the control end 1G1 that controls signal to bidirectional triode thyristor K1,1G2, the angle of flow of control controllable silicon K1, thereby control one section terminal voltage on the heating element heater JR1, heat, make actual temperature and design temperature more and more approaching.When actual temperature and design temperature differ above certain value and overlong time (temperature approach and time are set in program), the PLC program makes the Q0.5 closure, sends the sound and light alarm signal, and shows " one-level fuser malfunction " on touch-screen.When heating element heater unusual, make when electric current increases, the warning output 16 (I0.4) of silicon controlled power modulation trigger JK1,15 (N12) closure, make the switching value input point I0.4 closure of PLC, the PLC program makes the Q0.5 closure, send the sound and light alarm signal, and on touch-screen, show " one-level fuser malfunction ".Press " sound equipment releasing " or " sound equipment releasing " the knob FA on the control cabinet panel on the touch-screen, can remove audible alarm.
Secondary heats, three grades of heating principles are identical with one-level heating principle, just analog quantity output analog output module (EM232CN) control.
4, the hydrogen content signal of being measured by the online hydrogen meter A+ end (PIC1+), the M that are input to the analog quantity input on the PLC holds (PIC-), can show in real time on touch-screen after the PLC computing.Degasification also has real-time demonstration running time on touch-screen.When hydrogen content reaches when setting value, or when arriving the degasification setting-up time, out of service automatically, stop heating at different levels, turn-off magnetic valve, the concurrent visual alarm of speaking reminds the operator in time to carry out further work.Nitrogen flow is held (PIC-) by B+ end (PIC2+), the M that the flow transmitter in the system of being contained in is input to the analog quantity input on the PLC, nitrogen pressure is input to switching value input point I0.7 on the PLC by the pressure switch YK in the system of being contained in, when nitrogen flow or pressure anomaly, program makes the Q0.5 closure, sends sound and light alarm." suddenly stop knob " being provided with on the touch-screen and on the control cabinet panel, under the state of emergency, press, PLC switching value input point I0.0 closure, PLC programme-control whole system is out of service.
Claims (4)
1. non-ferrous metal liquid purifies agitating device, by support, be positioned at the rolling wheel under the support and the compositions such as handle of support end, it is characterized in that, on support, be provided with gas removing pipe, gas removing pipe is terminal to be connected with the graphite rod that is provided with passage, on described gas removing pipe, be provided with several grades of heaters, the gas removing pipe connection of connecting with the breather valve group, the breather valve group is made up of several breather valves parallel with one another, breather valve group air inlet is communicated with the inert gas conduit, is provided with flowmeter and control throughput and the circuit control device and the control panel that add heat in the appropriate location of described support.
2. non-ferrous metal liquid according to claim 1 purifies agitating device, it is characterized in that, described several grades of heaters are 3 grades of electric boiling plates by circuit control device control.
3. non-ferrous metal liquid according to claim 1 and 2 purifies agitating device, it is characterized in that, is connected with expansion link between described handle and support, is provided with the length adjustment cover on gas removing pipe.
4. non-ferrous metal liquid according to claim 1 and 2 purifies agitating device, it is characterized in that described breather valve group is formed by 5 magnetic valves with the air inlet pipe that each magnetic valve is communicated with separately.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010578099.5A CN102139356B (en) | 2010-12-08 | 2010-12-08 | Device for purifying and stirring non-ferrous metal liquid |
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| CN201010578099.5A CN102139356B (en) | 2010-12-08 | 2010-12-08 | Device for purifying and stirring non-ferrous metal liquid |
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| CN102139356B CN102139356B (en) | 2013-02-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195195A (en) * | 2018-02-08 | 2018-06-22 | 常州市亿和铝合金焊材有限公司 | A kind of aluminium melting furnace of nearly zero air-breathing |
| CN108330290A (en) * | 2018-03-08 | 2018-07-27 | 福建麦特新铝业科技有限公司 | A kind of online getter can be automatically controled hydrogen content for aluminum melt process for producing |
| CN109207758A (en) * | 2018-10-20 | 2019-01-15 | 北京逸智联科技有限公司 | A kind of Al alloy parts melt casting process |
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| EP0291580A1 (en) * | 1987-05-19 | 1988-11-23 | ALUMINIA S.p.A. | Apparatus for in-line degassing and filtering of aluminium and its alloys |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108195195A (en) * | 2018-02-08 | 2018-06-22 | 常州市亿和铝合金焊材有限公司 | A kind of aluminium melting furnace of nearly zero air-breathing |
| CN108330290A (en) * | 2018-03-08 | 2018-07-27 | 福建麦特新铝业科技有限公司 | A kind of online getter can be automatically controled hydrogen content for aluminum melt process for producing |
| CN109207758A (en) * | 2018-10-20 | 2019-01-15 | 北京逸智联科技有限公司 | A kind of Al alloy parts melt casting process |
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| CN102139356B (en) | 2013-02-06 |
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