CN102866085A - Thermophysical parameter-integrated test system and test method of alloy melt - Google Patents
Thermophysical parameter-integrated test system and test method of alloy melt Download PDFInfo
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- CN102866085A CN102866085A CN2012103687558A CN201210368755A CN102866085A CN 102866085 A CN102866085 A CN 102866085A CN 2012103687558 A CN2012103687558 A CN 2012103687558A CN 201210368755 A CN201210368755 A CN 201210368755A CN 102866085 A CN102866085 A CN 102866085A
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Abstract
The invention relates to a thermophysical parameter-integrated test system and test method of an alloy melt. At present, a lot of traditional methods and practical devices are used as the relative test methods and devices for testing one single parameter of surface tension, thickness, viscosity and resistivity, but most parameter-integrated test devices are not published and applied. In fact, the surface tension, the thickness, the viscosity and the resistivity are several important thermophysical parameters of the alloy melt, which are concerned by scientific and technical workers at the same time. Owing to the limitations of the traditional test method to the structure of the test device, the multi-parameter-integrated tests can be realized by one device, especially a melt sample. The thermophysical parameter-integrated test system comprises a host (1), wherein the host is connected with a temperature control cabinet (2) and a computer measurement and control unit (3), and a heating furnace of the host is connected with an argon bottle. The thermophysical parameter-integrated test system and the test method are used for the integrated test of the thermophysical parameters of the alloy melt.
Description
Technical field:
What the present invention relates to is metallurgy, casting and metal material field, is specifically related to a kind of alloy melt thermal physical property parameter integrated test system and method for testing.
Background technology:
Detection method and device about alloy melt surface tension, density, viscosity and resistivity individual event parameter has a lot of classic methods and utility unit at present, but the multiparameter integrated test set has no report and uses.In fact, several parameters that surface tension, density, viscosity and resistivity are normally paid close attention to simultaneously by the scientific worker, because conventional test methodologies to the restriction of proving installation structure, causes and can't on a table apparatus, especially realize the multiparameter integration testing at a bath sample.
Summary of the invention:
The purpose of this invention is to provide a kind of alloy melt thermal physical property parameter integrated test system and method for testing, finish surface tension, density, viscosity and four thermal physical property parameter tests of resistivity with an alloy melt sample.
Above-mentioned purpose realizes by following technical scheme:
A kind of alloy melt thermal physical property parameter integrated test system, its composition comprises: main frame, described main frame is connected with temperature control cabinet, computer measurement and control unit, and the heating furnace of described main frame is connected with argon bottle.
Described alloy melt thermal physical property parameter integrated test system, described main frame comprises sensor-dispensing, sensor elevating mechanism, heating furnace, crucible, crucible lifting and inlet/outlet mechanism, described crucible is fixed on the described crucible lift mechanism, described crucible lift mechanism be connected the crucible inlet/outlet mechanism and connect, described sensor-dispensing is connected with described sensor elevating mechanism.
Described alloy melt thermal physical property parameter integrated test system, described sensor-dispensing comprises Moving plate and quiet dish, and surface tension and density sensor probe positioning switch, viscosity sensor probe positioning switch, resistivity probe positioning switch, surface tension and density sensor probe socket, viscosity sensor probe socket, resistivity probe seat and moving gear are installed on the described Moving plate; Locating piece and quiet gear are installed on the described quiet dish, described moving gear and described quiet gear were intermeshing after described Moving plate and described quiet dish fastened, when described moving gear rotates under motor-driven, described moving gear will rotate around described quiet gear, thereby driving described Moving plate rotates synchronously, when described surface tension and density sensor probe positioning switch, described viscosity sensor probe positioning switch, when any one is in vertically downward the position in the described resistivity probe positioning switch, corresponding positioning switch will touch described locating piece, and send position signalling to described computer measurement and control unit, realize three sensor Switch of working positions.
Described alloy melt thermal physical property parameter integrated test system, described crucible lifting and inlet/outlet mechanism comprise vertical lifting mechanism and horizontal hunting mechanism, described vertical lifting mechanism comprises motor A, rack-and-pinion group A, pallet and VTOL (vertical take off and landing) travel switch group, described horizontal hunting mechanism comprises motor B, gear set, swing arm and horizontal hunting travel switch group, described crucible lift mechanism is vertically sent into above-mentioned crucible and takes out described heating furnace, described horizontal hunting mechanism with described crucible horizontal pendulum to described heating furnace below and pendulum to the sample position, the extreme position of VTOL (vertical take off and landing) and horizontal hunting is all controlled by corresponding travel switch.
Described alloy melt thermal physical property parameter integrated test system, described computer measurement and control unit is comprised of computing machine, printer, signal processing circuit, motor-drive circuit; Described temperature control cabinet comprises digital temperature control instrument, silicon controlled control circuit and pressure regulator.
Described alloy melt thermal physical property parameter integrated test system, described sensor elevating mechanism comprises column, crossbeam, lifting linking member, lifting motor, rack-and-pinion group B and displacement transducer, described sensor-dispensing is installed on the described crossbeam, by two described guide pillars, described crossbeam can be done steady elevating movement, described lifting motor drives described rack-and-pinion group B motion, driving described crossbeam by described lifting linking member rises or descends, realize that sensor probe enters and lift from bath sample, the high-low limit position is by described displacement transducer perception.
A kind of alloy melt thermal physical property parameter integration test method, the method comprises the steps:
(1) heating furnace heats up: set the heating furnace holding temperature by the temperature control cabinet, be blown into argon gas to heating furnace, reach automatic heat preserving behind the design temperature;
(2) select test mode: select the follow-on test pattern by the computer measurement and control unit, surface tension and density sensor probe go to vertically downward position;
(3) sampling: when described furnace temp reaches setting value, crucible lift mechanism descends automatically, crucible is put to connecing the sample position by horizontal hunting mechanism, after sample is added into crucible, to the heating furnace below, vertical lifting mechanism rises described crucible is sent into described heating furnace from movable pendulum in swing arm;
(4) tested melt carries out smelt surface tension and density measurement: described heating furnace continues to heat up, after reaching design temperature, general who has surrendered's surface tension and described density sensor probe is sent into described heating furnace under the sensor elevating mechanism, argon pressure perception melt liquid level position and the bubble internal pressure subtle change of sensor by blowing out, poor by twice falling head of displacement transducer Accurate Measurement, utilize the interior maximum pressure value of bubble, difference in height to find the solution smelt surface tension and density;
(5) reset, tested melt carries out viscosity test: after probe is suggested described heating furnace, described sensor-dispensing goes to vertically downward position with the viscosity sensor probe, described sensor elevating mechanism immerses bath sample with it, moment is finished the probe damped vibration, probe namely is suggested melt, utilizes logarithmic decrement and Vibrator character to calculate melt viscosity;
As be the multiparameter follow-on test, need repeating step (4), step (5), until all parameter testing is finished.
Beneficial effect:
1. one-machine-multi-function of the present invention, hardware cost reduces, and by this key device of sensor-dispensing, only needs control sensor station to change and can finish four parameter testings.
The present invention is simple to operate, and test period shortens, because automatically control is all adopted in the conversion of sensor station, probe lifting and crucible turnover, need not human intervention, and accurate control all can be realized in mechanism kinematic speed and position, can obviously shorten the test duration.
The present invention is with the same environmental testing of sample, and test result is more comparable.Take from the alloy melt sample of same stove or the liquid sample that the fusing of same solid sample forms, finish continuously four parameter testings in same heating furnace, its parameter comparability is better than the result that various sample is repeatedly tested.
The present invention realizes the functions such as the conversion of sensor test station, sensor probe turnover heating furnace, crucible turnover heating furnace, bath sample temperature variation, information parameter output; Form the computer measurement and control unit by computing machine, printer, input and output integrated circuit board, analog signal processing circuit and motor-drive circuit etc., realize main frame action control and signals collecting and processing; Adopt commercial standard argon bottle pressure-stabilized air source to be provided and to provide inert gas shielding for heating furnace for the main frame surface Tension Sensor; Form the temperature control cabinet by digital temperature control instrument, silicon controlled control circuit and pressure regulator, the realization furnace temp is controlled automatically.
Surface tension, density, viscosity and resistivity are four very important metal bath thermal physical property parameters, accurately predict the melt thermal physical property parameter, not only significant with effective production control process for metallurgy and casting field optimized production process, and for the metal material research field, can provide for it evaluation means of the liquid performance of a kind of new material.Utilize an alloy melt sample to finish the integration testing of four thermal physical property parameters, its superiority not only is the saving of testing apparatus and the reduction of testing cost, and the test result that obtains in the identical situation of what is more important test condition has more comparability.
Description of drawings:
Accompanying drawing 1 is the structural representation of this product.
Accompanying drawing 2 is structural representations of the Moving plate part of sensor-dispensing in the accompanying drawing 1.
Accompanying drawing 3 is structural representations of the quiet disc portion of sensor-dispensing in the accompanying drawing 1.
Accompanying drawing 4 is structural representations of crucible lifting and inlet/outlet mechanism in the accompanying drawing 1.
Accompanying drawing 5 is structural representations of sensor elevating mechanism in the accompanying drawing 1.
Embodiment:
Embodiment 1:
A kind of alloy melt thermal physical property parameter integrated test system, its composition comprises: main frame 1, described main frame is connected with temperature control cabinet 2, computer measurement and control unit 3, and the heating furnace of described main frame is connected with argon bottle.
Embodiment 2:
Above-mentioned alloy melt thermal physical property parameter integrated test system, described main frame is comprised of sensor-dispensing 4, sensor elevating mechanism 5, heating furnace 6, crucible 7, crucible lifting and inlet/outlet mechanism 8, described crucible is fixed on the described crucible lift mechanism, described crucible lift mechanism be connected the crucible inlet/outlet mechanism and connect, described sensor-dispensing is connected with described sensor elevating mechanism.
Embodiment 3:
Above-mentioned alloy melt thermal physical property parameter integrated test system, described sensor-dispensing is comprised of Moving plate 9 and quiet dish 10, and surface tension and density sensor probe positioning switch 11, viscosity sensor probe positioning switch 12, resistivity probe positioning switch 13, surface tension and density sensor probe socket 14, viscosity sensor probe socket 15, resistivity probe seat 16 and moving gear 17 are installed on the described Moving plate; Locating piece 18 and quiet gear 19 are installed on the described quiet dish, described moving gear and described quiet gear were intermeshing after described Moving plate and described quiet dish fastened, when described moving gear rotates under motor-driven, described moving gear will rotate around described quiet gear, thereby driving described Moving plate rotates synchronously, when described surface tension and density sensor probe positioning switch, described viscosity sensor probe positioning switch, when any one is in vertically downward the position in the described resistivity probe positioning switch, corresponding positioning switch will touch described locating piece, and send position signalling to described computer measurement and control unit, realize three sensor Switch of working positions.
Embodiment 4:
Above-mentioned alloy melt thermal physical property parameter integrated test system, described crucible lifting and inlet/outlet mechanism are comprised of vertical lifting mechanism 20 and horizontal hunting mechanism 21, described vertical lifting mechanism is by motor A, piece number: 22, rack-and-pinion group A, piece number: 23, pallet 24 and VTOL (vertical take off and landing) travel switch group 25 form, described horizontal hunting mechanism is by motor B, piece number: 26, gear set 27, swing arm 28 and horizontal hunting travel switch group 29 form, described crucible lift mechanism is vertically sent into above-mentioned crucible and takes out described heating furnace, described horizontal hunting mechanism with described crucible horizontal pendulum to described heating furnace below and pendulum to the sample position, the extreme position of VTOL (vertical take off and landing) and horizontal hunting is all controlled by corresponding travel switch.
Embodiment 5:
Above-mentioned alloy melt thermal physical property parameter integrated test system, described computer measurement and control unit is comprised of computing machine, printer, signal processing circuit, motor-drive circuit; Described temperature control cabinet is comprised of digital temperature control instrument, silicon controlled control circuit and pressure regulator.
Embodiment 6:
Above-mentioned alloy melt thermal physical property parameter integrated test system, described sensor elevating mechanism is by column 30, crossbeam 31, lifting linking member 32, lifting motor 33, rack-and-pinion group B, piece number: 34 and displacement transducer 35 form, described sensor-dispensing is installed on the described crossbeam, by two described guide pillars, described crossbeam can be done steady elevating movement, described lifting motor drives described rack-and-pinion group B motion, driving described crossbeam by described lifting linking member rises or descends, realize that sensor probe enters and lift from bath sample, the high-low limit position is by described displacement transducer perception.
Embodiment 7:
Above-mentioned alloy melt thermal physical property parameter integrated test system, described heating furnace is the through type tubular construction, and heater element is the U-shaped Si-Mo rod, and 8 heater element series connection are used, and maximum current is 50 amperes.The heater element periphery is alundum (Al2O3) brick thermofin and asbestos blanket heat-insulation layer, and outermost is the stainless steel protection cover.Logical argon gas in the stove during energising heating is to reduce heater element and the oxidized degree of graphite crucible.
Described crucible is processed by high-density graphite, and inner cavity size is Φ 100 x 120mm, and contour dimension is Φ 120 x 130mm.
Embodiment 8:
When vertical lifting mechanism is down to extreme lower position (the VTOL (vertical take off and landing) travel switch is by pressing), crucible separates with pallet, crucible is connect by swing arm end " O " shape frame holder, after horizontal hunting mechanism starts, crucible is put away heating furnace below (the horizontal hunting travel switch is by pressing when reaching the limit of the position), behind alloy melt sample or tested solid sample adding crucible, the counter motion of horizontal hunting mechanism, crucible is put to heating furnace (the horizontal hunting travel switch is by pressing), vertical lifting mechanism rises, from swing arm " O " shape frame until enter heating furnace (to extreme position time VTOL (vertical take off and landing) travel switch by pressing), mouth is sealed by pallet crucible at the bottom of the heating furnace by pallet top.
Embodiment 9:
A kind of alloy melt thermal physical property parameter integration test method, the method comprises the steps:
(1) heating furnace heats up: set the heating furnace holding temperature by the temperature control cabinet, be blown into argon gas to heating furnace, reach automatic heat preserving behind the design temperature;
(2) select test mode: select the follow-on test pattern by the computer measurement and control unit, surface tension and density sensor probe go to vertically downward position;
(3) sampling: when described furnace temp reaches setting value, crucible lift mechanism descends automatically, crucible is put to connecing the sample position by horizontal hunting mechanism, after sample is added into crucible, to the heating furnace below, vertical lifting mechanism rises described crucible is sent into described heating furnace from movable pendulum in swing arm;
(4) tested melt carries out smelt surface tension and density measurement: described heating furnace continues to heat up, after reaching design temperature, general who has surrendered's surface tension and described density sensor probe is sent into described heating furnace under the sensor elevating mechanism, argon pressure perception melt liquid level position and the bubble internal pressure subtle change of sensor by blowing out, poor by twice falling head of displacement transducer Accurate Measurement, utilize the interior maximum pressure value of bubble, difference in height to find the solution smelt surface tension and density;
(5) reset, tested melt carries out viscosity test: after probe is suggested described heating furnace, described sensor-dispensing goes to vertically downward position with the viscosity sensor probe, described sensor elevating mechanism immerses bath sample with it, moment is finished the probe damped vibration, probe namely is suggested melt, utilizes logarithmic decrement and Vibrator character to calculate melt viscosity;
As be the multiparameter follow-on test, need repeating step (4), step (5), until all parameter testing is finished.
Claims (7)
1. alloy melt thermal physical property parameter integrated test system, its composition comprises: main frame is characterized in that: described main frame is connected with temperature control cabinet, computer measurement and control unit, and the heating furnace of described main frame is connected with argon bottle.
2. alloy melt thermal physical property parameter integrated test system according to claim 1, it is characterized in that: described main frame comprises sensor-dispensing, sensor elevating mechanism, heating furnace, crucible, crucible lifting and inlet/outlet mechanism, described crucible is fixed on the described crucible lift mechanism, described crucible lift mechanism be connected the crucible inlet/outlet mechanism and connect, described sensor-dispensing is connected with described sensor elevating mechanism.
3. alloy melt thermal physical property parameter integrated test system according to claim 2, it is characterized in that: described sensor-dispensing comprises Moving plate and quiet dish, and surface tension and density sensor probe positioning switch, viscosity sensor probe positioning switch, resistivity probe positioning switch, surface tension and density sensor probe socket, viscosity sensor probe socket, resistivity probe seat and moving gear are installed on the described Moving plate; Locating piece and quiet gear are installed on the described quiet dish, described moving gear and described quiet gear were intermeshing after described Moving plate and described quiet dish fastened, when described moving gear rotates under motor-driven, described moving gear will rotate around described quiet gear, thereby driving described Moving plate rotates synchronously, when described surface tension and density sensor probe positioning switch, described viscosity sensor probe positioning switch, when any one is in vertically downward the position in the described resistivity probe positioning switch, corresponding positioning switch will touch described locating piece, and send position signalling to described computer measurement and control unit, realize three sensor Switch of working positions.
4. according to claim 2 or 3 described alloy melt thermal physical property parameter integrated test systems, it is characterized in that: described crucible lifting and inlet/outlet mechanism comprise vertical lifting mechanism and horizontal hunting mechanism, described vertical lifting mechanism comprises motor A, rack-and-pinion group A, pallet and VTOL (vertical take off and landing) travel switch group, described horizontal hunting mechanism comprises motor B, gear set, swing arm and horizontal hunting travel switch group, described crucible lift mechanism is vertically sent into above-mentioned crucible and takes out described heating furnace, described horizontal hunting mechanism with described crucible horizontal pendulum to described heating furnace below and pendulum to the sample position, the extreme position of VTOL (vertical take off and landing) and horizontal hunting is all controlled by corresponding travel switch.
5. alloy melt thermal physical property parameter integrated test system according to claim 4, it is characterized in that: described computer measurement and control unit is comprised of computing machine, printer, signal processing circuit, motor-drive circuit; Described temperature control cabinet comprises digital temperature control instrument, silicon controlled control circuit and pressure regulator.
6. according to claim 2 or 3 or 5 described alloy melt thermal physical property parameter integrated test systems, it is characterized in that: described sensor elevating mechanism comprises column, crossbeam, lifting linking member, lifting motor, rack-and-pinion group B and displacement transducer, described sensor-dispensing is installed on the described crossbeam, by two described guide pillars, described crossbeam can be done steady elevating movement, described lifting motor drives described rack-and-pinion group B motion, driving described crossbeam by described lifting linking member rises or descends, realize that sensor probe enters and lift from bath sample, the high-low limit position is by described displacement transducer perception.
7. alloy melt thermal physical property parameter integration test method, it is characterized in that: the method comprises the steps:
(1) heating furnace heats up: set the heating furnace holding temperature by the temperature control cabinet, be blown into argon gas to heating furnace, reach automatic heat preserving behind the design temperature;
(2) select test mode: select the follow-on test pattern by the computer measurement and control unit, surface tension and density sensor probe go to vertically downward position;
(3) sampling: when described furnace temp reaches setting value, crucible lift mechanism descends automatically, crucible is put to connecing the sample position by horizontal hunting mechanism, after sample is added into crucible, to the heating furnace below, vertical lifting mechanism rises described crucible is sent into described heating furnace from movable pendulum in swing arm;
(4) tested melt carries out smelt surface tension and density measurement: described heating furnace continues to heat up, after reaching design temperature, general who has surrendered's surface tension and described density sensor probe is sent into described heating furnace under the sensor elevating mechanism, argon pressure perception melt liquid level position and the bubble internal pressure subtle change of sensor by blowing out, poor by twice falling head of displacement transducer Accurate Measurement, utilize the interior maximum pressure value of bubble, difference in height to find the solution smelt surface tension and density;
(5) reset, tested melt carries out viscosity test: after probe is suggested described heating furnace, described sensor-dispensing goes to vertically downward position with the viscosity sensor probe, described sensor elevating mechanism immerses bath sample with it, moment is finished the probe damped vibration, probe namely is suggested melt, utilizes logarithmic decrement and Vibrator character to calculate melt viscosity;
As be the multiparameter follow-on test, need repeating step (4), step (5), until all parameter testing is finished.
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2012
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Patent Citations (5)
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| DE19963686A1 (en) * | 1999-12-29 | 2001-07-19 | Michael Breitwieser | Arrangement for determining viscosity, surface tension and density of liquid products has measurement body used to measure surface tension, viscosity, density in single working step |
| CN1603788A (en) * | 2004-11-17 | 2005-04-06 | 哈尔滨理工大学 | Quick determination device for surface tension of liquid metal and liquid alloy |
| CN101196501A (en) * | 2007-12-29 | 2008-06-11 | 朱先德 | Gas analyzer with automatic sample feeding mechanism |
| CN101692012A (en) * | 2009-09-08 | 2010-04-07 | 南京大学 | Method for synchronously measuring temperature, surface tension and contact angle of droplet by controlling temperature and humidity |
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Application publication date: 20130109 |