CN210123391U - Steel density measuring device - Google Patents
Steel density measuring device Download PDFInfo
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- CN210123391U CN210123391U CN201822206002.2U CN201822206002U CN210123391U CN 210123391 U CN210123391 U CN 210123391U CN 201822206002 U CN201822206002 U CN 201822206002U CN 210123391 U CN210123391 U CN 210123391U
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Abstract
The utility model relates to a measuring device of steel density belongs to steel physics detection and analysis technical field. The device comprises an electronic balance, a beaker, a sample suspension mechanism and a measuring reagent, wherein the beaker is arranged on the electronic balance, the measuring reagent is arranged in the beaker, the sample suspension mechanism is arranged above the beaker, and the sample suspension mechanism is connected with a sample arranged in the beaker, so that the sample is always in a suspension state in the measuring reagent. The sample suspension mechanism comprises a weight, a fixed pulley and a thermocouple wire, the weight is arranged on the platform, a support used for arranging the fixed pulley is fixedly arranged on the platform, the thermocouple wire is arranged on the fixed pulley, one end of the thermocouple wire is connected with the weight, and the other end of the thermocouple wire is connected with the center of the end part of the sample. The three physical quantities measured by the method are all related to the reading of the balance, so that the preparation of the measurement result is ensured; and the device has simple structure and convenient operation.
Description
Technical Field
The utility model relates to a measuring device of steel density belongs to steel physics detection and analysis technical field.
Background
The density of steel is one of the basic physical properties of steel, and the density is mainly related to factors such as the composition, the density and the structural state of the steel, and is not a fixed value. The density of the steel is measured, the inherent uniformity of the components and the structure of the material is reflected, and the method has important significance in new product development, process structure adjustment and meeting the requirements of end customers, so that the accurate measurement of the density of the steel is very necessary. The density of steel is usually measured by placing a steel sample in a beaker containing water, measuring the volume V of the steel sample by a drainage method, weighing the mass m of the sample by a balance, and calculating the density of the steel by using a density formula. The measuring method needs to estimate and read the water level scale of the water-containing beaker and record a numerical value V1, needs to estimate and read the water level scale of the steel sample when the steel sample is placed in the water-containing beaker and records a numerical value V2, and takes V2-V1 as the volume V of the steel sample. Since V1 and V2 are both estimated and read, the estimation is influenced by human subjective factors and the scale of the beaker, so that the calculation is carried out by the density formula rho m/VThe density of the steel of (2) may be subject to large errors. In addition, the measurement range of the standard densimeter is (0.65-1.36) g/cm3It is not suitable for measuring the density of steel.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a measuring device of steel density is provided to above-mentioned prior art, simple structure, convenient operation guarantees measuring result's accuracy.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a measuring device of steel density, includes electronic balance, beaker, sample suspension mechanism and measuring reagent, the beaker is located on the electronic balance, measuring reagent locates in the beaker, the beaker top is located to sample suspension mechanism, sample suspension mechanism is connected with the sample of locating in the beaker for the sample is in the suspended state all the time in measuring reagent.
The sample suspension mechanism comprises a weight, a fixed pulley and a thermocouple wire, the weight is arranged on the platform, a support used for arranging the fixed pulley is fixedly arranged on the platform, the thermocouple wire is arranged on the fixed pulley, one end of the thermocouple wire is connected with the weight, and the other end of the thermocouple wire is connected with the center of the end part of the sample.
The measuring reagent is distilled water.
The precision of the electronic balance is 0.001g
Compared with the prior art, the utility model has the advantages of: a steel density measuring apparatus for measuring the mass m of a steel sample, the mass N1 of a beaker and distilled water, and the mass N2 of the beaker, distilled water and sample when the steel sample is kept still in water by a balance, and estimating the tap density calculation formula to be rhoSteel＝m/(N2-N1) The three measured physical quantities are all related to the reading of the balance, so that the preparation of the measurement result is ensured; and the device has simple structure and convenient operation.
Drawings
FIG. 1 is a schematic view of a device for measuring steel density according to an embodiment of the present invention;
in the figure, 1 sample, 2 thermocouple wires, 3 distilled water, 4 beakers, 5 fixed pulleys, 6 weights, 7 electronic balances and 8 platforms.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the measuring device for steel density in this embodiment includes an electronic balance 7, a beaker 4, a weight 6, a fixed pulley 5, a thermocouple wire 2 and distilled water 3, the distilled water 3 is poured into the beaker 4, and then placed on the electronic balance 7 for weighing the mass of the beaker 4 and the distilled water 3, a platform 8 is disposed obliquely above the beaker 4, the weight 6 is disposed on the platform 8, a support for disposing the fixed pulley 5 is fixedly disposed on the platform 8, the thermocouple wire 2 is disposed on the fixed pulley 5, one end of the thermocouple wire 2 is connected to the weight 6, the other end of the thermocouple wire 2 is connected to the end of the sample 1, the steel sample 1 is kept still in water under the action of vertical upward pulling force, the steel sample 1 is not in contact with the bottom of the beaker 4, that is, i.e., the steel sample 1 is kept in a suspended state in water all the time.
A proper amount of distilled water 3 is filled in the beaker 4, the mass of the beaker 4 and the distilled water 3 is weighed by an electronic balance 7, and the reading N is recorded1. The steel sample 1 is weighed by an electronic balance 7 and the reading m is recorded. Putting steel sample 1 into beaker 4 containing distilled water 3, because steel sample 1 one end is equipped with fixed pulley 5, heavy object 6 and thermocouple wire 2 for steel sample 1 has the pulling force vertically upwards, and heavy object 6 moves about on platform 8, lets steel sample 1 keep static in aqueous, and steel sample 1 does not contact with beaker 4 bottom, and steel sample 1 is in the suspended state in aqueous promptly. When the steel sample 1 is suspended in water, the tensile force applied is F, the volume of the steel sample 1 is V, the steel sample 1 is used as a research object, and the gravity rho applied to the steel sample 1 isSteelgV, buoyancy ρWater (W)gV and F, the relationship of the three is F + rhoWater (W)gV＝ρSteelgV, formula (1).
The masses of beaker 4, distilled water 3 and steel sample 1 suspended in water were weighed with electronic balance 7, and reading N was recorded2(ii) a The beaker 4, the distilled water 3 and the steel sample 1 were used as the objects of study, and the gravity applied to the beaker 4, the distilled water 3 and the steel sample 1 was N1g+ρSteelgV, supported by a supporting force N2g, under the tensile force of F, turn offIs N1g+ρSteelgV＝N2g + F, formula (2).
G in the formulae (1) and (2) is the acceleration of gravity. Obtaining V ═ N from formulas (1) and (2)2-N1)/ρWater (W)So that the density of the steel is rhoSteel＝mρWater (W)/(N2-N1). Since distilled water 3 was used for the measurement, the density thereof was 1g/cm3The density of the steel is then expressed as ρSteel＝m/(N2-N1) Unit g/cm3。
Three samples were cut for each steel type using an electronic balance 7 with a resolution of 0.0001g for 36MnVS4, 46MnVS5 and S36CVTiS2, and the densities were measured by suspending steel sample 1 in water, taking the average of the three densities as the density of the steel, and the results are given in the following table:
watch 1
The density rho of 46MnVS5 is (7.8279+7.8287+7.8327)/3 is 7.8297g/cm 3;
the density rho of 36MnVS4 is (7.7884+7.7837+7.7813)/3 is 7.7844g/cm 3;
the density ρ of S36CVTiS2 is (7.8099+7.8309+7.7995)/3 is 7.8135g/cm 3.
Description of the drawings:
(1) in the Table I, m1, m2 and m3 represent the masses of the first, second and third test pieces 1 of a certain steel type, respectively, and N1，N3，N5Respectively, the readings of the electronic balance 7, N, corresponding to the beaker 4 containing water when the first, second and third samples 1 are not placed in water2，N4，N6Respectively, the corresponding readings of the electronic balance 7 when the first, second and third samples 1 are placed in water and held still.
(2) The average density value of three samples 1 of each steel type is taken as the density of the steel, and the influence of the component segregation and the structure compactness is mainly considered.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (3)
1. A measuring device of steel density is characterized in that: the device comprises an electronic balance (7), a beaker (4), a sample suspension mechanism and a measuring reagent (3), wherein the beaker (4) is arranged on the electronic balance (7), the measuring reagent (3) is arranged in the beaker (4), the sample suspension mechanism is arranged above the beaker (4), and the sample suspension mechanism is connected with a sample (1) arranged in the beaker (4) so that the sample (1) is always in a suspension state in the measuring reagent (3);
sample suspension mechanism includes heavy object (6), fixed pulley (5) and thermocouple wire (2), on platform (8) was located in heavy object (6), the fixed support that is used for setting up fixed pulley (5) that is equipped with on platform (8), on fixed pulley (5) was located in thermocouple wire (2), heavy object (6) are connected to thermocouple wire (2) one end, and sample (1) tip center is connected to thermocouple wire (2) other end.
2. A steel density measuring apparatus according to claim 1, wherein: the measuring reagent (3) is distilled water.
3. A steel density measuring apparatus according to claim 1, wherein: the precision of the electronic balance (7) is 0.001 g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822206002.2U CN210123391U (en) | 2018-12-26 | 2018-12-26 | Steel density measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822206002.2U CN210123391U (en) | 2018-12-26 | 2018-12-26 | Steel density measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210123391U true CN210123391U (en) | 2020-03-03 |
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| CN201822206002.2U Active CN210123391U (en) | 2018-12-26 | 2018-12-26 | Steel density measuring device |
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| CN (1) | CN210123391U (en) |
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2018
- 2018-12-26 CN CN201822206002.2U patent/CN210123391U/en active Active
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