CN1603788A - Quick determination device for surface tension of liquid metal and liquid alloy - Google Patents
Quick determination device for surface tension of liquid metal and liquid alloy Download PDFInfo
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- CN1603788A CN1603788A CN 200410044059 CN200410044059A CN1603788A CN 1603788 A CN1603788 A CN 1603788A CN 200410044059 CN200410044059 CN 200410044059 CN 200410044059 A CN200410044059 A CN 200410044059A CN 1603788 A CN1603788 A CN 1603788A
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Abstract
It is a rapid measurement apparatus for liquid metal and liquid alloy surface tension and it relates to metallurgy and foundry field. The power input end (1-1) is connected with output end of (11) power; the down end of (1-2) is connected with (4) and the upper end of (4-2) is connected with (4-1); the two gas-in end of (5) is separately connected with vent of (6)(6-1); the controlled end of (6) is connected with output end of (11); the controlled end of (5) is connected with output end of (11); the output end of (2) is connected with input end of (11) through (7); the output end of (3) is connected with input end of (11) through (11); the output end of (11)is connected with input end of (9); the output end of (12)is connected with input end of (11).
Description
Technical field:
What the present invention relates to is metallurgy and casting field, specifically is the capillary fast measuring device of a kind of liquid metal and liquid alloy.
Background technology:
Surface tension is one of important physical parameter of liquid metal and liquid alloy.A lot of mass parameters, as cast iron graphite form, the rotten treatment effect of aluminium alloy, alloy mold-filling capacity etc., all closely related with the surface tension of its alloy liquid.The capillary traditional assay method of liquid alloy mainly contains bubble maximum pressure method, sessile drop method and hollow cylinder method etc., and its minute is all more than a few minutes.Up to now, the method for quick that does not still have truly is used for liquid alloy capillary stokehold detection.Therefore, utilize the hope of surface tension Real-Time Evaluation liquid alloy correlated quality parameter can't realize always.On " applied science journal " the 3rd phase in 1999, by Li Dayong, Kang Jiuzhou, Zhang Yutong, pottery state has just waited and has proposed in the paper that is entitled as " new method and the new equipment of fast prediction molten iron graphite form in a kind of the bag " that the people delivers a kind ofly can record the capillary new method of liquid alloy " bubble amplitude-frequency Equivalent method " fast in 5 seconds, the ultimate principle of this method as shown in Figure 1, this method is blown into bubble by a probe that the linear capillary quartz ampoule of certain internal diameter size Φ x is housed fast to tested liquid alloy, monitor pressure reduction variation in 5 time in the second inner capillary tubes, obtain a constant amplitude pressure oscillation curve, discern and calculate the peak on the continuous oscillation curve, valley and peak valley difference DELTA P also calculate the number N that blows out bubble in 5 second time according to this, according to Φ x, Δ P and N, utilize formula σ e=a Δ P+bN+c (Φ x-Φ o) to obtain a surface tension with fluid to be measured surface tension σ equivalence again, (σ e is the equivalent surface tension in the formula to be referred to as the equivalent surface tension, Φ o is the internal diameter of standard capillary, Φ o=2.0mm, a, b, c is through testing definite coefficient).Advantages such as compare with traditional assay method, it is fast that " bubble amplitude-frequency Equivalent method " has test speed, can realize liquid alloy surface tension stokehold fast detecting, and easy to use, testing cost is low.But because the mode that adopts the linear kapillary to blow downwards, when measuring liquid metal and liquid non-ferrous alloy, its surface film oxide easily wraps up the quartzy mouth of pipe of capillary; When mensuration was seethed more violent liquid spheroidal-graphite cast iron, its surperficial slag also entered in the capillary quartz ampoule easily; Above-mentioned phenomenon causes occurring blowing the not phenomenon of constant amplitude of bubble and differential pressure curve that holds one's breath, and has seriously influenced measuring accuracy, makes applying of " bubble amplitude-frequency Equivalent method " be subjected to obstruction.
Summary of the invention:
The purpose of this invention is to provide the capillary fast measuring device of a kind of liquid metal and liquid alloy, the surface tension of its energy liquid towards metal and liquid alloy is measured fast and accurately.Driving mechanism 1, micro-pressure sensor 2, infrared temperature sensor 3, heat-resisting probe 4, gas circuit solenoid directional control valve 5, mini air compressor 6, inert gas steel cylinder 6-1, pressure difference signal amplifier 7, temperature signal amplifier 8, light-emitting diode display 9, mini-printer 10, single-chip microcomputer expanded circuit 11, keyboard circuit 12 are formed up and down by probe for it; The power control signal input end of motor 1-1 about the probe in the driving mechanism 1 connects the power control signal output terminal of single-chip microcomputer expanded circuit 11; the ungulate mechanical arm in lower end of hitch frame 1-2 about the probe in the driving mechanism 1 is connected with the outside surface of heat-resisting probe 4; the upper port of high temperature resistant quartz ampoule 4-2 in the heat-resisting probe 4 is communicated with heat-resisting probe 4 upper end cavity 4-1; the venthole 5-1 of gas circuit solenoid directional control valve 5 is communicated with the upper end cavity 4-1 of heat-resisting probe 4; the air inlet port of the bore of gas circuit solenoid directional control valve 5 measurement high quartz pipe 4-2 connects the port of giving vent to anger of mini air compressor 6; the air intake opening of gas circuit solenoid directional control valve 5 surface tension values connects the port of giving vent to anger of inert gas steel cylinder 6-1; the controlled end of mini air compressor 6 connects first control output end of single-chip microcomputer expanded circuit 11; the controlled end of gas circuit solenoid directional control valve 5 connects second control output end of single-chip microcomputer expanded circuit 11; the air pressure detection port 2-1 of micro-pressure sensor 2 is communicated with the upper end cavity 4-1 of heat-resisting probe 4; the detection signal output terminal of micro-pressure sensor 2 connects the signal input part of pressure difference signal amplifier 7; the signal output part of pressure difference signal amplifier 7 connects first signal input part of single-chip microcomputer expanded circuit 11; the shell of infrared temperature sensor 3 is connected on the protection outer cover 2-2 of micro-pressure sensor 2 by two connecting rod 3-1; the thermometric port 3-2 of infrared temperature sensor 3 vertically downward; the detection signal output terminal of infrared temperature sensor 3 connects the signal input part of temperature signal amplifier 8; the signal output part of temperature signal amplifier 8 connects the secondary signal input end of single-chip microcomputer expanded circuit 11; the video data output terminal of single-chip microcomputer expanded circuit 11 connects the data-signal input end of light-emitting diode display 9; the print data output terminal of single-chip microcomputer expanded circuit 11 connects the data input pin of mini-printer 10; the control signal output ends of keyboard circuit 12 connects the signal input end of single-chip microcomputer expanded circuit 11; the bore of high temperature resistant quartz ampoule 4-2 in the heat-resisting probe 4 is Φ 1.8mm～Φ 2.2mm; the lower end of high temperature resistant quartz ampoule 4-2 is a crotch shape; its radius-of-curvature r=8～10mm, the lower ending opening of high quartz pipe 4-2 are upwards.Principle of work: probe is the heat-resisting probe 4 of driving mechanism 1 locking up and down, mini air compressor 6 is by gas circuit solenoid directional control valve 5, cavity 4-1, high temperature resistant quartz ampoule 4-2 outwards blows, single-chip microcomputer expanded circuit 11 records the internal diameter of high temperature resistant quartz ampoule 4-2 by micro-pressure sensor 2, crotch end with high temperature resistant capillary quartz ampoule 4-2 all immerses in liquid metal or the liquid alloy certain depth then, inert gas steel cylinder 6-1 is by gas circuit solenoid directional control valve 5, cavity 4-1, high temperature resistant quartz ampoule 4-2 is blown into bubble in liquid metal or liquid alloy, single-chip microcomputer expanded circuit 11 calculates the surface tension value of liquid metal or liquid alloy at last by the pressure reduction among micro-pressure sensor 2 and the infrared temperature sensor 3 real-time monitoring cavity 4-1 and the temperature variation of liquid.The present invention's energy liquid towards metal and liquid alloy carry out capillary fast measuring, when measuring the surface tension value of liquid metal or liquid alloy, high temperature resistant quartz ampoule lower end crotch can overcome metal oxide film surface and wrap up give vent to anger port and slag of high temperature resistant quartz ampoule and enter phenomenons such as high temperature resistant quartz ampoule, guarantee to generate equably complete bubble, it also have simple in structure, measure accurately and advantage fast.
Description of drawings:
Fig. 1 is the measuring principle synoptic diagram of " bubble amplitude-frequency Equivalent method " in the background technology, and Fig. 2 is an one-piece construction synoptic diagram of the present invention.
Embodiment:
In conjunction with Fig. 2 present embodiment is described, form up and down by driving mechanism 1, micro-pressure sensor 2, infrared temperature sensor 3, heat-resisting probe 4, gas circuit solenoid directional control valve 5, mini air compressor 6, inert gas steel cylinder 6-1, pressure difference signal amplifier 7, temperature signal amplifier 8, light-emitting diode display 9, mini-printer 10, single-chip microcomputer expanded circuit 11, keyboard circuit 12 by probe for present embodiment; The power control signal input end of motor 1-1 about the probe in the driving mechanism 1 connects the power control signal output terminal of single-chip microcomputer expanded circuit 11; the ungulate mechanical arm in lower end of hitch frame 1-2 about the probe in the driving mechanism 1 is connected with the outside surface of heat-resisting probe 4; the upper port of high temperature resistant quartz ampoule 4-2 in the heat-resisting probe 4 is communicated with heat-resisting probe 4 upper end cavity 4-1; the venthole 5-1 of gas circuit solenoid directional control valve 5 is communicated with the upper end cavity 4-1 of heat-resisting probe 4; the air inlet port of the bore of gas circuit solenoid directional control valve 5 measurement high quartz pipe 4-2 connects the port of giving vent to anger of mini air compressor 6; the air intake opening of gas circuit solenoid directional control valve 5 surface tension values connects the port of giving vent to anger of inert gas steel cylinder 6-1; the controlled end of mini air compressor 6 connects first control output end of single-chip microcomputer expanded circuit 11; the controlled end of gas circuit solenoid directional control valve 5 connects second control output end of single-chip microcomputer expanded circuit 11; the air pressure detection port 2-1 of micro-pressure sensor 2 is communicated with the upper end cavity 4-1 of heat-resisting probe 4; the detection signal output terminal of micro-pressure sensor 2 connects the signal input part of pressure difference signal amplifier 7; the signal output part of pressure difference signal amplifier 7 connects first signal input part of single-chip microcomputer expanded circuit 11; the shell of infrared temperature sensor 3 is connected on the protection outer cover 2-2 of micro-pressure sensor 2 by two connecting rod 3-1; the thermometric port 3-2 of infrared temperature sensor 3 vertically downward; the detection signal output terminal of infrared temperature sensor 3 connects the signal input part of temperature signal amplifier 8; the signal output part of temperature signal amplifier 8 connects the secondary signal input end of single-chip microcomputer expanded circuit 11; the video data output terminal of single-chip microcomputer expanded circuit 11 connects the data-signal input end of light-emitting diode display 9; the print data output terminal of single-chip microcomputer expanded circuit 11 connects the data input pin of mini-printer 10; the control signal output ends of keyboard circuit 12 connects the signal input end of single-chip microcomputer expanded circuit 11; the bore of high temperature resistant quartz ampoule 4-2 in the heat-resisting probe 4 is Φ 1.8mm～Φ 2.2mm; the lower end of high temperature resistant quartz ampoule 4-2 is a crotch shape; its radius-of-curvature r=8～10mm, the lower ending opening of high quartz pipe 4-2 are upwards.The model that micro-pressure sensor 2 is selected for use is LCY-1000, the model that infrared temperature sensor 3 is selected for use is R46-2ML3, the model that the chip of differential amplifier 7 is selected for use is ICL7650, the model that the chip of temperature signal amplifier 8 is selected for use is ICL7650, the model that the single-chip microcomputer of single chip circuit 11 is selected for use is 80C196KC, and the model that printer 10 is selected for use is μ P-16A.
Claims (2)
1. the capillary fast measuring device of liquid metal and liquid alloy, driving mechanism (1), micro-pressure sensor (2), infrared temperature sensor (3), heat-resisting probe (4), gas circuit solenoid directional control valve (5), mini air compressor (6), inert gas steel cylinder (6-1), pressure difference signal amplifier (7), temperature signal amplifier (8), light-emitting diode display (9), mini-printer (10), single-chip microcomputer expanded circuit (11), keyboard circuit (12) are formed up and down by probe for it; The power control signal input end of the motor (1-1) about the probe in the driving mechanism (1) connects the power control signal output terminal of single-chip microcomputer expanded circuit (11), the ungulate mechanical arm in lower end of the hitch frame (1-2) about the probe in the driving mechanism (1) is connected with the outside surface of heat-resisting probe (4), the upper port of the high temperature resistant quartz ampoule (4-2) in the heat-resisting probe (4) is communicated with heat-resisting probe (4) upper end cavity (4-1), the venthole (5-1) of gas circuit solenoid directional control valve (5) is communicated with the upper end cavity (4-1) of heat-resisting probe (4), the air inlet port of the bore of gas circuit solenoid directional control valve (5) measurement high quartz pipe (4-2) connects the port of giving vent to anger of mini air compressor (6), the air intake opening of gas circuit solenoid directional control valve (5) surface tension value connects the port of giving vent to anger of inert gas steel cylinder (6-1), the controlled end of mini air compressor (6) connects first control output end of single-chip microcomputer expanded circuit (11), the controlled end of gas circuit solenoid directional control valve (5) connects second control output end of single-chip microcomputer expanded circuit (11), the air pressure detection port (2-1) of micro-pressure sensor (2) is communicated with the upper end cavity (4-1) of heat-resisting probe (4), the detection signal output terminal of micro-pressure sensor (2) connects the signal input part of pressure difference signal amplifier (7), the signal output part of pressure difference signal amplifier (7) connects first signal input part of single-chip microcomputer expanded circuit (11), the shell of infrared temperature sensor (3) is connected on the protection outer cover (2-2) of micro-pressure sensor (2) by two connecting rods (3-1), the thermometric port (3-2) of infrared temperature sensor (3) vertically downward, the detection signal output terminal of infrared temperature sensor (3) connects the signal input part of temperature signal amplifier (8), the signal output part of temperature signal amplifier (8) connects the secondary signal input end of single-chip microcomputer expanded circuit (11), the video data output terminal of single-chip microcomputer expanded circuit (11) connects the data-signal input end of light-emitting diode display (9), the print data output terminal of single-chip microcomputer expanded circuit (11) connects the data input pin of mini-printer (10), and the control signal output ends of keyboard circuit (12) connects the signal input end of single-chip microcomputer expanded circuit (11); The lower end that it is characterized in that the high temperature resistant quartz ampoule (4-2) in the heat-resisting probe (4) is a crotch shape, and the lower ending opening of high quartz pipe (4-2) upwards.
2. the capillary fast measuring device of liquid metal according to claim 1 and liquid alloy, the bore that it is characterized in that high temperature resistant quartz ampoule (4-2) is Φ 1.8mm～Φ 2.2mm, the hooked radius-of-curvature r=8 in the lower end～10mm of high temperature resistant quartz ampoule (4-2).
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100440597A CN1295491C (en) | 2004-11-17 | 2004-11-17 | Quick determination device for surface tension of liquid metal and liquid alloy |
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| CNB2004100440597A CN1295491C (en) | 2004-11-17 | 2004-11-17 | Quick determination device for surface tension of liquid metal and liquid alloy |
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| CN1295491C CN1295491C (en) | 2007-01-17 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082558B (en) * | 2007-07-16 | 2010-05-26 | 哈尔滨理工大学 | Perturbation motion proof device for fluctuation melt surface tension rapid detecting |
| CN102866085A (en) * | 2012-09-28 | 2013-01-09 | 哈尔滨理工大学 | Thermophysical parameter-integrated test system and test method of alloy melt |
| CN104697903A (en) * | 2013-12-05 | 2015-06-10 | 上海梭伦信息科技有限公司 | Real liquid drop process portable contact angle and interface tension testing method and apparatus thereof |
| CN105093568A (en) * | 2015-08-10 | 2015-11-25 | 京东方科技集团股份有限公司 | Display equipment and device, liquid metal material and manufacturing die, method and device |
| CN106393983A (en) * | 2015-07-29 | 2017-02-15 | 中国科学院理化技术研究所 | Liquid metal printing ink box |
| CN106442228A (en) * | 2016-08-11 | 2017-02-22 | 重庆大学 | Device for measuring surface tension by using high-temperature melt maximum bubble method |
| CN111272219A (en) * | 2020-01-22 | 2020-06-12 | 华北电力大学 | Liquid metal lithium physical property parameter testing system and testing method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2035329A1 (en) * | 1990-01-31 | 1991-08-01 | Ladislav Novotny | Method of preparation miniaturized sensors on basis of fluids and arrangement of the measuring system |
| DE29609646U1 (en) * | 1996-05-31 | 1996-08-14 | Technische Universität Dresden, 01069 Dresden | Device for the dynamic measurement of the surface tension of a liquid |
| DE10016634A1 (en) * | 2000-04-04 | 2001-10-18 | Ams Analysen Mess Und Systemte | Determining surface tension of liquids, involves using bubble pressure method in bubble tensiometer, relating capillary pressure to be evaluated to externally generated counter pressure |
| CN2466631Y (en) * | 2001-02-23 | 2001-12-19 | 山东大学 | Dynamic surface tension apparatus |
| CN2548146Y (en) * | 2002-06-07 | 2003-04-30 | 南京大学 | Surface tension measuring instrument |
-
2004
- 2004-11-17 CN CNB2004100440597A patent/CN1295491C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082558B (en) * | 2007-07-16 | 2010-05-26 | 哈尔滨理工大学 | Perturbation motion proof device for fluctuation melt surface tension rapid detecting |
| CN102866085A (en) * | 2012-09-28 | 2013-01-09 | 哈尔滨理工大学 | Thermophysical parameter-integrated test system and test method of alloy melt |
| CN104697903A (en) * | 2013-12-05 | 2015-06-10 | 上海梭伦信息科技有限公司 | Real liquid drop process portable contact angle and interface tension testing method and apparatus thereof |
| CN106393983A (en) * | 2015-07-29 | 2017-02-15 | 中国科学院理化技术研究所 | Liquid metal printing ink box |
| CN105093568A (en) * | 2015-08-10 | 2015-11-25 | 京东方科技集团股份有限公司 | Display equipment and device, liquid metal material and manufacturing die, method and device |
| CN105093568B (en) * | 2015-08-10 | 2018-07-03 | 京东方科技集团股份有限公司 | Display device and device, liquid metal material and prepare mold, method and apparatus |
| CN106442228A (en) * | 2016-08-11 | 2017-02-22 | 重庆大学 | Device for measuring surface tension by using high-temperature melt maximum bubble method |
| CN111272219A (en) * | 2020-01-22 | 2020-06-12 | 华北电力大学 | Liquid metal lithium physical property parameter testing system and testing method thereof |
| CN111272219B (en) * | 2020-01-22 | 2021-05-07 | 华北电力大学 | Liquid metal lithium physical property parameter testing system and testing method thereof |
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| CN1295491C (en) | 2007-01-17 |
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