CN106442620A - Powder material sample supporter for measuring coefficient of heat conduction - Google Patents
Powder material sample supporter for measuring coefficient of heat conduction Download PDFInfo
- Publication number
- CN106442620A CN106442620A CN201611089051.1A CN201611089051A CN106442620A CN 106442620 A CN106442620 A CN 106442620A CN 201611089051 A CN201611089051 A CN 201611089051A CN 106442620 A CN106442620 A CN 106442620A
- Authority
- CN
- China
- Prior art keywords
- support cylinder
- heat conduction
- coefficient
- lower support
- supporting cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000000463 material Substances 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 title abstract description 28
- 239000000523 sample Substances 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 210000000744 eyelid Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a powder material sample supporter for measuring the coefficient of heat conduction and belongs to the technical field of measurement of the coefficient of heat conduction. The powder material sample supporter aims at solving the problems that an existing method for testing the coefficient of heat conduction of a powder material can damage a sensor probe, and the measuring result accuracy is poor. The powder material sample supporter comprises a base, an upper supporting cylinder and a lower supporting cylinder. The upper supporting cylinder and the lower supporting cylinder are cylinders with through inner cavities. The lower supporting cylinder is concentrically and fixedly connected with the base, the lower end face of the upper supporting cylinder is fixed to the upper end face of the lower supporting cylinder in a buckled mode, a gap is formed between the upper supporting cylinder and the lower supporting cylinder, and the gap serves as the insertion position of the sensor probe. Through vent holes are formed in the positions, corresponding to the inner cavity of the lower supporting cylinder, of the base, and the vent holes are covered with filter paper. The powder material sample supporter serves as a container for measuring the coefficient of heat conduction of the powder material.
Description
Technical field
The present invention relates to dusty material specimen support is used in coefficient of heat conduction measurement, belong to coefficient of heat conduction e measurement technology neck
Domain.
Background technology
The heat-conductive characteristic of material is one of physical parameter of playing an important role in materials hot working process, and solid material holds
Easy-formation, can be directly prepared into required sample and be tested, and the coefficient of heat conduction for test powders material, because it is loose
Not easy-formation, thus the preparation to test sample brings difficulty it is necessary to complete to powder using certain specimen support
The test of material thermal conductivity coefficient.
Relatively broad at present use the test that using thermal constant analyser, dusty material is carried out with the coefficient of heat conduction, heat
The English name of Constant Analysis instrument is Hotdisk, and it has test speed soon, the advantage of high precision.Its method of testing is first
Powder is loaded in a monoblock type powder material case, then sensor probe part is embedded in inside powder, measures.Should
The defect of method of testing is that the position that sensor probe imbeds body feed tank every time is difficult accurately to control, and this can affect certainty of measurement
And the calculating of subsequently other thermal property parameter.And different loading densities can produce certain shadow to the dusty material coefficient of conductivity
Ring, and only using a monoblock type body feed tank, due to needing to imbed sensor, be not easy to obtain multiple loading densities, thus
The dusty material coefficient of heat conduction under different loading densities cannot be tested；Sensor probe is flexible easily folding piece simultaneously, in powder
Load during being compacted again, not only easily bring deformation to sensor probe and damage, also can affect the precision measuring.
Content of the invention
The invention aims to the method for testing solving the existing dusty material coefficient of heat conduction can be made to sensor probe
Become to damage and the poor problem of measurement result accuracy, there is provided dusty material sample support is used in a kind of coefficient of heat conduction measurement
Device.
Dusty material specimen support is used in the coefficient of heat conduction of the present invention measurement, it include base, upper support cylinder and
Lower support cylinder, upper support cylinder and lower support cylinder are the penetrating cylinder of inner chamber；
Lower support cylinder is concentric with base to be fixedly connected, and the lower surface buckle of upper support cylinder is fixed on lower support cylinder
On upper surface, and there is gap between upper support cylinder and lower support cylinder, this gap is as the on position of sensor probe；
On base, the penetrating passage of the position setting of corresponding lower support cylinder inner chamber, passage is coated with filter paper.
Advantages of the present invention：The structure of the present invention is used for the coefficient of heat conduction measurement of dusty material, and measurement form is in Sanming City
Control formula, the circular probe of sensor is positioned in the middle of the sample that upper and lower support cylinder is loaded, form the installation way of sandwich.
This eyelid retractor can achieve the loading respectively of upper and lower two parts powder sample, loads after terminating compacting, two support tubes are pacified when closing up again
Dress sensor, thus serve the protection to sensor and precise positioning effect.Further, since the section chi of upper and lower support cylinder
Very little identical, if take its volume identical simultaneously, along with the load mode of separate type, can achieve the accurate control of difference loading density
And obtain accurate measurement result, therefore can enter with measurement Research difference loading density for the impact of the powder coefficient of heat conduction
And instruct the powder loading density when processing technique needs the powder difference coefficient of heat conduction in turn.
Brief description
Fig. 1 is the structural representation of coefficient of heat conduction measurement dusty material specimen support of the present invention.
Specific embodiment
Specific embodiment one：With reference to Fig. 1, present embodiment is described, coefficient of heat conduction measurement described in present embodiment
Use dusty material specimen support, it includes base 1, upper support cylinder 2 and lower support cylinder 3, upper support cylinder 2 and lower support
Cylinder 3 is the penetrating cylinder of inner chamber；
Lower support cylinder 3 is concentric with base 1 to be fixedly connected, and the lower surface buckle of upper support cylinder 2 is fixed on down to prop up and holds round
On the upper surface of cylinder 3, and there is gap between upper support cylinder 2 and lower support cylinder 3, this gap is as sensor probe 4
On position；
On base 1, the penetrating passage 1-1 of the position setting of corresponding lower support cylinder 3 inner chamber, passage 1-1 is coated with
Filter paper.
Upper support cylinder 2 is identical respectively with external diameter with the internal diameter of lower support cylinder 3.
Convex circular platform 1-2 is centrally located on base 1, the internal diameter phase of the diameter of this circular platform 1-2 and lower support cylinder 3
With lower support cylinder 3 snaps onto on this circular platform 1-2.
It also includes threaded components 5, and base 1, upper support cylinder 2 and lower support cylinder 3 are connected to one by threaded components 5
Rise.
Described specimen support is made using steel, the buckle fixed form of upper support cylinder 2 and lower support cylinder 3,
Can a support cylinder end face arrange kick, an other support cylinder corresponding end-faces setting little groove, by projection with
Groove interference is clasped, reliable fixing.The connection of threaded components 5, set in advance on two support cylinder side walls and base
Put through hole, threaded components 5 match through through hole and are fixedly connected.
Base 1 can be made up of the cylinder in stepped two sections of different-diameters, and large-diameter circular shell of column is as whole device
Support, circular platform 1-2 section diameter is identical with the internal diameter of lower support cylinder 3, when in use, for guaranteeing upper support cylinder 2 He
The volume of lower support cylinder 3 is identical, can calculate after removing the volume that convex circular platform 1-2 occupies in lower support cylinder 3, make
Upper support cylinder 2 is identical with the volume of lower support cylinder 3.
When whole device is closed up, circular platform 1-2 enters the inside of lower support cylinder 3, can support the powder of internal loading
Last sample prevents from leaking.By the information transmission assemblies of the supporting configuration of sensor by information after sensor probe data measured information
Transfer-out.Because measure high with cylinder of the internal diameter of upper and lower support cylinder is known, and then the internal body loading sample can be calculated
Long-pending, can indirectly calculate the loading density of powder when loading different quality powder, realize the precise control of powder loading density.
Working in coordination for confining whole device of threaded components 5, prevents the play of sensor and powder from flowing out.Base upper vent hole
The setting of 1-1, is as a kind of spiracle in fact, prevents powder positioned at bottom from radiating uneven, hot-spot and affects to measure
Precision.Filter paper can be identical with the internal diameter of lower support cylinder 3, is laid in base upper surface, with powder sample directly contact, prevents little
Particle powder runs off from the passage 1-1 of base.During upper support cylinder 2 loading powder sample, other patch tools can be coordinated
Realize loading and being compacted to its content, then close with lower support cylinder 3 and disturb.Thus, the present invention passes through accurate control
The cross-sectional area of sample preparation product, height of specimen are MTD, loading density, realize more accurately surveying of the sample coefficient of heat conduction
Amount, this also increase simultaneously subsequently other Thermal Parameters include in the calculating process such as thermal capacitance, thermal coefficient of expansion really quantitative
Measurement, makes calculating more convenient.
Change property because some dusty materials are easy to oxidation reaction in heating up process, ultimately result in
The accurate pyroconductivity of material cannot be obtained, therefore, in test process, the eyelid retractor installing sample is placed in baking oven, dry
Place metal tube in case and lead to outside, so during intensification and test, can be passed through into baking oven by metal tube
The protective gas such as nitrogen, prevent material oxidation degeneration.So can be implemented in and measure powder on the premise of not affecting powder properties
The material coefficient of heat conduction at relatively high temperatures.
Claims (4)
1. a kind of coefficient of heat conduction measurement dusty material specimen support is it is characterised in that it includes base (1), upper support
Cylinder (2) and lower support cylinder (3), upper support cylinder (2) and lower support cylinder (3) are the penetrating cylinder of inner chamber；
Lower support cylinder (3) is concentric with base (1) to be fixedly connected, and the lower surface buckle of upper support cylinder (2) is fixed on lower support
On the upper surface of cylinder (3), and there is gap between upper support cylinder (2) and lower support cylinder (3), this gap is as sensor
The on position of probe (4)；
The position of upper corresponding lower support cylinder (3) inner chamber of base (1) arranges penetrating passage (1-1), passage (1-1) overlying
It is stamped filter paper.
2. the coefficient of heat conduction according to claim 1 measurement with dusty material specimen support it is characterised in that upper support
Cylinder (2) is identical respectively with external diameter with the internal diameter of lower support cylinder (3).
3. the coefficient of heat conduction according to claim 1 measurement with dusty material specimen support it is characterised in that base
(1) it is centrally located convex circular platform (1-2) on, the diameter of this circular platform (1-2) is identical with the internal diameter of lower support cylinder (3),
Lower support cylinder (3) snaps onto on this circular platform (1-2).
4. coefficient of heat conduction measurement dusty material specimen support according to claim 1 is it is characterised in that it also wraps
Include threaded components (5), base (1), upper support cylinder (2) and lower support cylinder (3) are linked together by threaded components (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611089051.1A CN106442620A (en) | 2016-11-30 | 2016-11-30 | Powder material sample supporter for measuring coefficient of heat conduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611089051.1A CN106442620A (en) | 2016-11-30 | 2016-11-30 | Powder material sample supporter for measuring coefficient of heat conduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106442620A true CN106442620A (en) | 2017-02-22 |
Family
ID=58223533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611089051.1A Pending CN106442620A (en) | 2016-11-30 | 2016-11-30 | Powder material sample supporter for measuring coefficient of heat conduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106442620A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943670A (en) * | 2010-05-21 | 2011-01-12 | 中国科学院山西煤炭化学研究所 | Testing device of sintering temperature of pressurized solid powder and application |
| CN103399031A (en) * | 2013-08-16 | 2013-11-20 | 济钢集团有限公司 | Novel sintering pot test research apparatus |
| CN105136845A (en) * | 2015-08-13 | 2015-12-09 | 华北电力大学 | Solid powder thermal conductivity coefficient transient hot strip method measuring device and method |
| CN206208810U (en) * | 2016-11-30 | 2017-05-31 | 东北林业大学 | Dusty material specimen support is used in coefficient of heat conduction measurement |
-
2016
- 2016-11-30 CN CN201611089051.1A patent/CN106442620A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943670A (en) * | 2010-05-21 | 2011-01-12 | 中国科学院山西煤炭化学研究所 | Testing device of sintering temperature of pressurized solid powder and application |
| CN103399031A (en) * | 2013-08-16 | 2013-11-20 | 济钢集团有限公司 | Novel sintering pot test research apparatus |
| CN105136845A (en) * | 2015-08-13 | 2015-12-09 | 华北电力大学 | Solid powder thermal conductivity coefficient transient hot strip method measuring device and method |
| CN206208810U (en) * | 2016-11-30 | 2017-05-31 | 东北林业大学 | Dusty material specimen support is used in coefficient of heat conduction measurement |
Non-Patent Citations (1)
| Title |
|---|
| 余和五 等: ""LaNi_5粉末导热性能的研究"", 《南京师大学报(自然科学版)》 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |