CN205027641U - Survey test device of ceramic dry base porosity - Google Patents
Survey test device of ceramic dry base porosity Download PDFInfo
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- CN205027641U CN205027641U CN201520737715.5U CN201520737715U CN205027641U CN 205027641 U CN205027641 U CN 205027641U CN 201520737715 U CN201520737715 U CN 201520737715U CN 205027641 U CN205027641 U CN 205027641U
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Abstract
The utility model provides a survey test device of ceramic dry base porosity, this test device's the weightless measurement system's of body heat insulating board is laid on electronic balance's volume dish, the gravity distribution ware is laid on the heat insulating board, it is even as an organic whole with the sample platform that the gravity distribution ware passes through the bracing piece, the sample support frame is laid at the sample bench, after passing sample support frame top centre bore, body shrink measurement system's dimensional change measuring stick stretches into in distance sensor's the oscillator coil shaft hole, sample platform and sample support frame are laid in the furnace of uncovered miniature electric stove, open at the bottom center of uncovered miniature electric stove has the aperture, the bracing piece stretches out from this aperture to be connected with the gravity distribution ware. The temperature of uncovered miniature electric stove is controlled by the PID temperature controller, and electronic balance and distance sensor's data are by computer synchronous sampling. The utility model discloses the loss drying and the dry shrinkage curve of the wet base of pottery among the dry run can be surveyd in step, necessary measured data is provided for calculating ceramic dry base porosity.
Description
One, technical field
The utility model relates to pottery and material property testing apparatus technical field thereof, specifically a kind of test unit measuring ceramic dry body porosity.
Two, background technology
The porosity height of ceramic body burns till efficiency and properties of product have important impact to follow-up.At present, the porosity of direct mensuration ceramic body is more difficult, reason is that the adhesion of ceramic body is very weak, base substrate volume change is often caused as measured its porosity by full water law, measuring base substrate porosity again because expensive equipment causes a lot of unit, enterprise cannot adopt by mercury intrusion method, there is with wrapping up in wax method mensuration base substrate porosity the disadvantage that operation link is loaded down with trivial details, artifical influence factor is many.Report according to interrelated data, particle in ceramic wet blank is wrapped in by moisture, hole between particle also moisture abrim, in dry run, the moisture of particle surface evaporates gradually, distance between particle also shortens thereupon, macroscopically be presented as that base substrate shrinks, when moisture is evaporated to a certain degree, the particle in ceramic wet blank will contact with each other, at this moment wet base macroscopically just stopped contraction, but wet base not bone dry.Now, the moisture in base substrate is " residue " moisture that base substrate has just stopped retaining when shrinking in hole between particles, and base substrate also can extend along with drying time and continue to dewater.After they are overflowed completely, hole will be left in base substrate, so this part volume occupied by " residue " moisture can be considered as the volume of voids of base substrate, if the volume of this part " residue " moisture and the cumulative volume of dry body, just can calculate the porosity of dry body when can know that in dry run, wet base has just stopped shrinking.The volume of " residue " moisture can be tried to achieve by the mass-density relation of water, and dry body cumulative volume calculates after can respectively tieing up size by measurement dry body and obtains.Use this method being different from traditional mensuration pottery dry body porosity, the weight-loss curve that key is to want Simultaneous Determination ceramic wet blank in dry run and shrinkage curve, and know when ceramic wet blank stops shrinking accordingly, and base substrate remaining water cut when stopping shrinking.The utility model is exactly the test unit implemented to solve the problem, and it can the weightless change curve of Simultaneous Determination ceramic wet blank in dry run and contraction change curve, provides necessary determination data for calculating ceramic dry body porosity.
Three, utility model content
The utility model relates to a kind of test unit for measuring ceramic dry body porosity, and this test unit can the weight-loss curve of Simultaneous Determination ceramic wet blank in dry run and shrinkage curve, for the porosity calculating ceramic dry body provides necessary data.
In addition, data shows, the plasticity of ceramic batch is different, the water holding capacity of ceramic wet blank can be different, in dry run, dewatering speed is also different with dehydration feature, the plasticity of ceramic batch can be evaluated according to the eigenwert of dehydration weight-loss curve, owing to lacking corresponding laboratory facilities, ceramic research and production unit are all often adopt the method for oven drying to measure the water cut of ceramic wet blank, the method can not obtain the dehydration weight-loss curve of ceramic wet blank, cannot be evaluated the plasticity of ceramic batch by dewatering speed.The loss on drying curve that the utility model obtains, can separately for evaluating the plasticity of ceramic batch, for research and production provide important information.
The utility model adopts following technical scheme to realize above-mentioned object: a kind of test unit measuring ceramic dry body porosity, and comprise base substrate weightless measurement system, base substrate shrinks measuring system and uncovered miniature furnace, concrete structure and annexation are:
Described base substrate weightless measurement system is configured to by electronic balance, thermal insulation board, support bar, gravity divider, sample stage and sample support, thermal insulation board is placed on the amount dish of electronic balance, gravity divider is placed on thermal insulation board, gravity divider is connected as a single entity by support bar and sample stage, sample support frame is placed on sample stage
Described base substrate shrinks measuring system by sample support frame, change in size sounding rod, range sensor is formed, change in size sounding rod extend in the oscillator coil axis hole of range sensor through behind sample support frame upper center hole, along with sample is in the change in size of thickness direction, the degree of depth that change in size sounding rod extend into range sensor oscillator coil axis hole also changes thereupon, in range sensor, the Q value of oscillator coil also changes thereupon, oscillation frequency is caused to change, the relation between the degree of depth-oscillation frequency-output voltage is stretched into by sounding rod, just the change of thickness of sample size can be known, accuracy of detection can reach micron order.
Described sample stage and sample support frame are placed in the burner hearth of uncovered miniature furnace, and the bottom centre of uncovered miniature furnace has aperture, and support bar stretches out from this aperture and is connected with gravity divider.
Described uncovered miniature furnace is vertical type cylinder shape, and the Electrothermic wire of 220V300W is equidistantly wound in the outside of electric furnace wall in two-way non-inductive mode.
Described gravity divider is metallic, flush edge, section are the lid of arc.
Above the fire door of described uncovered miniature furnace, the position of 3cm is provided with hot baffle, and hot baffle is metallic dome, and hot baffle center is offered an aperture and passed by change in size sounding rod.
Described sample support frame is made up of alumina based material, and bottom surface is smooth, and for placing testing sample, upper center has an aperture and is convenient to change in size sounding rod and passes, and sample support frame can take out from sample stage or put into, to load and unload sample.
The test method of the test unit of described mensuration pottery dry body porosity, comprises following step:
(1) power supply of unlocking electronic balance, range sensor, computing machine, preheating 30 minutes, the thermostat temperature arranging uncovered miniature furnace temperature controller is 105 DEG C;
(2) prepare the ceramic wet blank testing sample that shape is regular, requirement can the dried volume of Measurement accuracy testing sample;
(3) ceramic wet blank testing sample is placed on the center of sample support frame bottom surface, is placed on the center of sample upper surface with an aluminium flake, then sample support frame is put on the sample stage of electric stove hearth, cover hot baffle;
(4) change in size sounding rod is passed from top to down the central small hole above hot baffle central small hole and sample support frame, vertically be placed on the aluminium flake of ceramic wet blank testing sample upper surface, again range sensor Vertical dimension is transferred in restriction posting, make change in size sounding rod upper end stretch into the oscillator coil axis hole of range sensor;
(5) the peeling key of electronic balance is pressed, start-up simulation machine data acquisition software;
(6) open the power switch of uncovered miniature furnace, reach the thermostat temperature of specifying through 3 ~ 5min electric stove hearth;
(7) computing machine gathers the data of the gentle range sensor in primary electron sky every 5s, and real-time rendering weightlessness-shrinkage curve.After weight-loss curve walks flat 5min, just stop data acquisition, close the power supply of uncovered miniature furnace, electronic balance and range sensor, determination test terminates;
The temperature of described uncovered miniature furnace is controlled by PID temperature controller, and the data of electronic balance and range sensor are by computing machine synchronous acquisition.
Outstanding advantages of the present utility model is:
1, can the loss on drying curve of ceramic wet blank and dry shrinkage curve in Simultaneous Determination dry run, then the residual moisture content that base substrate shrinks base substrate on corresponding time point when stopping is found, convert thereof into the volume of residue water, measure cooled ceramic dry body volume, just can calculate the porosity of ceramic dry body.
2, determination period is about 1.5 hours most, compared with classic method, has simple, fast advantage.
3, the ceramic wet blank weight-loss curve obtained, can separately for evaluating the plasticity of blank;
4, the ceramic wet blank shrinkage curve obtained, can separately for the inner structure of the shrinkage character and base substrate of evaluating wet base.
Four, accompanying drawing explanation
Fig. 1 is the structural representation of the test unit of the ceramic dry body porosity of mensuration described in the utility model.
Be labeled as in figure: electronic balance 1, thermal insulation board 2, support bar 3, gravity divider 4, sample stage 5, testing sample 6, uncovered miniature furnace 7, sample support frame 8, hot baffle 9, change in size sounding rod 10, range sensor 11, restriction posting 12.
Five, embodiment
Below by embodiment, this test unit is described further.
Embodiment 1
As shown in Figure 1, the test unit of the ceramic dry body porosity of mensuration described in the utility model, comprises base substrate weightless measurement system, base substrate shrinks measuring system and uncovered miniature furnace.
Described base substrate weightless measurement system is by electronic balance 1, thermal insulation board 2, support bar 3, gravity divider 4, sample stage 5 and sample support frame 8 are formed, in order to the impact preventing electronic balance 1 to be subject to top electric furnace heat radiation, thermal insulation board 2 is placed on the amount dish of electronic balance 1, gravity divider 4 is placed on thermal insulation board 2, gravity divider 4 is connected as a single entity by support bar 3 and sample stage 5, sample support frame 8 is placed on sample stage 5, the weight change of testing sample 6 is delivered to electronic balance 1 by sample support frame 8-sample stage 5-support bar 3-gravity divider 4-thermal insulation board 2.The object using gravity divider 4 is to allow the scale pan of electronic balance 1 bear equally distributed acting force.
Described base substrate shrinks measuring system and is made up of sample support frame 8, change in size sounding rod 10, range sensor 11.Sample support frame 8 upper center is provided with an aperture, and change in size sounding rod 10 extend in the oscillator coil axis hole of range sensor 11 through behind this hole.The aperture of sample support frame 8 upper center plays " bearing " effect, prevents change in size sounding rod 10 from vacillating now to the left, now to the right.
The burner hearth of described uncovered miniature furnace 7 is vertical type cylinder shape, and hearth wall material is pottery, and the Electrothermic wire of 220V300W adopts two-way non-inductive pattern to be wound in hearth outer wall equally spacedly.Asbestos insulation material is filled between hearth outer wall and stainless steel casing.Thermopair stretches in burner hearth bottom electric stove hearth.For ease of the evaporation of base moisture wet in dry run, do not establish burner hearth lid, but about 3 centimeters are provided with hot baffle 9 above stockhole, with the impact avoiding range sensor 11 to be subject to thermal updrafts.Uncovered miniature furnace is equipped with the temperature controller that PID regulates, and it is by the power input of thyristor regulating electricity-saving oven, and electric furnace thermostat temperature is arranged on 105 DEG C, and system temperature-controlled precision is ± 1 DEG C.
During work, the frivolous aluminium matter sequin that a slice diameter is 10mm is first placed at the upper surface center of testing sample 6, and the bottom of change in size sounding rod 10 is placed on the center of this sequin.The object of use sequin is the pressure in order to reduce change in size sounding rod 10 pairs of testing sample 6 upper surfaces, guarantees that change in size sounding rod 10 can not penetrate in testing sample 6.For obtaining stable reading, change in size sounding rod 10 can not with any object contact except the central small hole hole wall above testing sample 6 upper surface and sample support frame 8.Along with sample 6 is in the change in size of thickness direction, the degree of depth that change in size sounding rod 10 stretches into range sensor 11 oscillator coil axis hole changes thereupon, in range sensor 11, the Q value of oscillator coil also changes thereupon, oscillation frequency is caused to change, the relation between the degree of depth-oscillation frequency-output voltage is stretched into by change in size sounding rod 10, just can know the change of testing sample 6 gauge, systems axiol-ogy precision can reach micron order.
The data of electronic balance 1 and range sensor 11, by computing machine synchronous acquisition, just can draw real-time loss on drying curve and dry shrinkage curve by computing machine.
Embodiment 2
The present embodiment is the using method of the test unit of the mensuration pottery dry body porosity described in employing, comprises the steps:
1, the power supply of unlocking electronic balance 1, range sensor 11, computing machine, preheating more than 30 minutes, the thermostat temperature arranging furnace temperature control instrument is 105 DEG C;
2, old good ceramic batch mould is made the round pie ceramic wet blank of φ 3.10 × 1.60cm as testing sample 6;
3, sample support frame 8 is taken out, testing sample 6 is placed in the center of sample support frame 8 bottom surface, the frivolous aluminium matter sequin of a slice φ about 10mm is lain in lightly the center of testing sample 6 upper surface, subsequently sample support frame 8 is put on the sample stage 5 of burner hearth, cover hot baffle 9;
4, by change in size sounding rod 10 from top to down through the central small hole above the center pit of hot baffle 9 and sample support frame 8, vertically be placed on the center of the little aluminium flake of testing sample 6 upper surface, again range sensor 11 Vertical dimension is transferred in restriction posting 12, change in size sounding rod 10 upper end is made to stretch in the oscillator coil axis hole of range sensor 11, and guarantee that change in size sounding rod 10 is in the center of the oscillator coil axis hole of range sensor 11, must not contact with hole wall;
5, after pressing the peeling key of electronic balance 1, start-up simulation machine data gathers;
6, connect the power switch of uncovered miniature furnace 7, through about 5 minutes, the burner hearth of uncovered miniature furnace 7 reached the thermostat temperature of specifying.
7, computing machine gathers the data of primary electron balance 1 and range sensor 11 every 5s, and real-time rendering weightlessness-shrinkage curve, just the data acquisition of software can be stopped after weight-loss curve walks flat 5 minutes, close the power supply of uncovered miniature furnace 7, electronic balance 1, range sensor 11, determination test terminates, after electric stove hearth cooling, take out sample.
Claims (5)
1. measure a test unit for ceramic dry body porosity, comprise base substrate weightless measurement system, base substrate shrinks measuring system and uncovered miniature furnace, it is characterized in that, concrete structure and annexation are:
Described base substrate weightless measurement system is configured to by electronic balance, thermal insulation board, support bar, gravity divider, sample stage and sample support, thermal insulation board is placed on the amount dish of electronic balance, gravity divider is placed on thermal insulation board, gravity divider is connected as a single entity by support bar and sample stage, sample support frame is placed on sample stage
Described base substrate shrinks measuring system and is made up of sample support frame, change in size sounding rod, range sensor, and change in size sounding rod extend in the oscillator coil axis hole of range sensor through behind sample support frame upper center hole,
Described sample stage and sample support frame are placed in the burner hearth of uncovered miniature furnace, and the bottom centre of uncovered miniature furnace has aperture, and support bar stretches out from this aperture and is connected with gravity divider.
2. the test unit of the ceramic dry body porosity of mensuration according to claim 1, is characterized in that, described uncovered miniature furnace is vertical type cylinder shape, and the Electrothermic wire of 220V300W is equidistantly wound in the outside of electric furnace wall in two-way non-inductive mode.
3. the test unit of the ceramic dry body porosity of mensuration according to claim 1, is characterized in that, described gravity divider is metallic, flush edge, section are the lid of arc.
4. the test unit of the ceramic dry body porosity of mensuration according to claim 1, it is characterized in that, above the fire door of described uncovered miniature furnace, the position of 3cm is provided with hot baffle, and hot baffle is metallic dome, and hot baffle center is offered an aperture and passed by change in size sounding rod.
5. the test unit of the ceramic dry body porosity of mensuration according to claim 1, it is characterized in that, described sample support frame is made up of alumina based material, bottom surface is smooth, for placing testing sample, upper center has an aperture and is convenient to change in size sounding rod and passes, and sample support frame can take out from sample stage or put into, to load and unload sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520737715.5U CN205027641U (en) | 2015-09-22 | 2015-09-22 | Survey test device of ceramic dry base porosity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520737715.5U CN205027641U (en) | 2015-09-22 | 2015-09-22 | Survey test device of ceramic dry base porosity |
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| CN205027641U true CN205027641U (en) | 2016-02-10 |
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| CN201520737715.5U Expired - Fee Related CN205027641U (en) | 2015-09-22 | 2015-09-22 | Survey test device of ceramic dry base porosity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203441A (en) * | 2015-09-22 | 2015-12-30 | 广西大学 | Testing device and method for measuring ceramic dry billet porosity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203441A (en) * | 2015-09-22 | 2015-12-30 | 广西大学 | Testing device and method for measuring ceramic dry billet porosity |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20190922 |