CN105891033A - Durometer for measuring variable-temperature hardness of metal material - Google Patents
Durometer for measuring variable-temperature hardness of metal material Download PDFInfo
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- CN105891033A CN105891033A CN201610387405.4A CN201610387405A CN105891033A CN 105891033 A CN105891033 A CN 105891033A CN 201610387405 A CN201610387405 A CN 201610387405A CN 105891033 A CN105891033 A CN 105891033A
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- heating furnace
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- calandria
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/54—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a durometer for measuring the variable-temperature hardness of a metal material, and belongs to the technical field of metal material mechanical property testing instruments. The durometer is used for measuring the hardness of the metal material under the variable temperature environment. According to the technical scheme, an embedded heating body is adopted as a heating source, the embedded heating body and a heating furnace shell are isolated and insulated by nanometer heat insulation materials, water-cooling pipelines do not need to be installed, the structure is simple, operation is convenient, and the service life is long; high-purity nitrogen or argon is adopted as the protective atmosphere, and the sample surface is prevented from being oxidized; a thermocouple and a temperature controller are adopted for controlling the heating temperature, and the highest heating temperature of a hearth can reach 1000 DEG C. The durometer is the initiation for measuring the hardness of the metal material under the variable temperature environment, the problem that the variable temperature hardness of the metal material cannot be measured continuously is solved, the new testing means is provided for online measurement of the material variable temperature mechanical performance, the durometer has the advantages of being convenient to operate and accurate in measurement, and hardness value determination under various metal material variable temperature environments can be achieved.
Description
Technical field
The present invention relates to a kind of measuring metallic materials hardometer of hardness under varying temperature environment, belong to metal material mechanics performance testing apparatus technical field.
Background technology
Hardness test is the important detection project evaluating material mechanical performance index.Common hardness test is carried out under room temperature environment, even if evaluating material firmness level under different temperatures environment, also the condition of high temperature of material must be quickly cooled to room temperature.Consequently, it is possible to the result of test can only symbolically characterize the alternating temperature hardness number of material, and the firmness level under concrete test temperature conditions can not be reflected exactly.
In production practices and scientific experiment, need to carry out the test in terms of alternating temperature hardness the service life of appraisal tool steel and wear-resistant coating, and evaluate material at tempering, abrasion, thermal etching, the aspect such as mechanical property Changing Pattern of aging, creep process, alternating temperature hardness test has greatly application demand, but due at present because lacking relevant means of testing, seriously limit carrying out of on-line determination material alternating temperature mechanical property, be unfavorable for that new material, new technology are in material science and the progress of production field.
Summary of the invention
The technical problem to be solved is to provide the hardometer of a kind of measuring metallic materials alternating temperature hardness, this hardometer can measure the hardness number of metal material under the varying temperature environment that maximum operation (service) temperature is 1000 DEG C, it is achieved the hardness test under different temperatures environment.
The technical scheme solving above-mentioned technical problem is:
A kind of hardometer of measuring metallic materials alternating temperature hardness, it includes hardometer main body, hardness measurement depression bar, heating furnace body, heating furnace lifting platform, temperature controller, thermocouple, the hardness measurement depression bar of hardometer main body is disposed vertically, heating furnace body is positioned at the lower section of hardness measurement depression bar, heating furnace body is placed on heating furnace lifting platform, embedded calandria is installed in heating furnace body, the center burner hearth of embedded calandria has sample stage, heating furnace body has can the furnace upper cover of folding, furnace upper cover is provided with sealing-plug, embedded calandria is connected with heating power supply, thermocouple is connected with embedded calandria, temperature controller is connected in the circuit between heating power supply and embedded calandria.
The hardometer of above-mentioned measuring metallic materials alternating temperature hardness; it also has protective atmosphere device; protective atmosphere device is made up of protective atmosphere source of the gas, gas pipeline, gas gauge, AFS valve; protective atmosphere source of the gas is connected with the burner hearth of heating furnace body by gas pipeline, is provided with gas gauge and air-flow switch valve in gas pipeline.
The hardometer of above-mentioned measuring metallic materials alternating temperature hardness, is filled with nanometer heat insulation material between shell and the embedded calandria of described heating furnace body, and nanometer heat insulation material is by separated with embedded calandria for heating furnace body shell.
The hardometer of above-mentioned measuring metallic materials alternating temperature hardness, described hardness measurement depression bar is refractory metal depression bar, is embedded with hardness measurement pressure head in the lower end of hardness measurement depression bar.
The hardometer of above-mentioned measuring metallic materials alternating temperature hardness, sample adjustment hole is had on the outer wall of described heating furnace body, sample adjustment hole is horizontal through the outer wall of heating furnace body and the body wall of embedded calandria, the aperture of sample adjustment hole matches with the external diameter of sample levels push rod, the front end of sample levels push rod is relative with the sample on sample stage through sample adjustment hole, and the rear end of sample levels push rod is positioned at outside heating furnace body.
The invention has the beneficial effects as follows:
The present invention uses embedded calandria as heating source, isolates thermal insulation with nanometer heat insulation material, it is not necessary to installing water cooled pipeline, simple in construction, easy to operate, service life is long between embedded calandria and heating furnace body shell；The present invention uses high pure nitrogen or argon gas as protective atmosphere, prevents specimen surface from aoxidizing；The present invention uses thermocouple, temperature controller to be controlled heating-up temperature, burner hearth maximum heating temperature can reach 1000 DEG C, utilize the parts such as resistant to elevated temperatures hardness measurement depression bar, hardness measurement pressure head, heating furnace lifting platform, sample stage, sample levels push rod, it is achieved the sample hardness test under different temperatures environment.
The present invention is measuring metallic materials hardness pioneering under varying temperature environment, solving can not the difficult problem of continuously measuring discontinuous metal material alternating temperature hardness, new means of testing is provided for on-line determination material alternating temperature mechanical property, have rational in infrastructure, easy to operate, measure advantage accurately, it is possible to achieve under the dissimilar metal material varying temperature environments such as cold-strip steel, high-abrasive material, high temperature alloy hardness number measure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of heating furnace body；
Fig. 3 is the schematic diagram of hardness measurement depression bar.
Figure mark as follows: hardometer main body 1, hardness measurement depression bar 2, heating furnace body 3, gas gauge 4, AFS valve 5, gas pipeline 6, protective atmosphere source of the gas 7, temperature controller 8, heating furnace lifting platform 9, sample levels push rod 10, thermocouple 11, sample stage 12, hardness measurement pressure head 13, embedded calandria 14, sealing-plug 15, furnace upper cover 16, nanometer heat insulation material 17.
Detailed description of the invention
The present invention is made up of hardometer main body 1, hardness measurement depression bar 2, heating furnace body 3, gas gauge 4, AFS valve 5, gas pipeline 6, protective atmosphere source of the gas 7, temperature controller 8, heating furnace lifting platform 9, sample levels push rod 10, thermocouple 11, sample stage 12, hardness measurement pressure head 13, embedded calandria 14, sealing-plug 15, furnace upper cover 16, nanometer heat insulation material 17.
Figure shows; the overall structure of the present invention is; hardness measurement depression bar 2 is arranged in hardometer main body 1; hardness measurement depression bar 2 is disposed vertically; heating furnace body 3 is positioned at the lower section of hardness measurement depression bar 2; heating furnace body 3 is placed on heating furnace lifting platform 9, and protective atmosphere source of the gas 7 is connected with heating furnace body 3 by gas pipeline 6.
Showing in figure, being provided with embedded calandria 14 in heating furnace body 3, be filled with nanometer heat insulation material 17 between shell and the embedded calandria 14 of heating furnace body 3, nanometer heat insulation material 17 is by separated with embedded calandria 14 for heating furnace body 3 shell.Owing to isolating thermal insulation with nanometer heat insulation material 17 between embedded calandria 14 and heating furnace body 3 shell, being therefore not required to design water cooled pipeline, simple in construction, easy to operate, service life is long.
Figure shows, the center burner hearth of embedded calandria 14 have sample stage 12, heating furnace body 3 have can the furnace upper cover 16 of folding, furnace upper cover 16 is provided with sealing-plug 15.Open furnace upper cover 16 to place on sample stage 12 and take out specimen sample.By opening heating furnace upper cover sealing-plug 15, specimen sample can be carried out hardness test after closing furnace upper cover 16.
Figure shows, embedded calandria 14 is connected with heating power supply, thermocouple 11 is connected with embedded calandria 14, temperature in measuring burner hearth, temperature controller 8 is connected in the circuit between heating power supply and embedded calandria 14, for controlling heating-up temperature, burner hearth maximum heating temperature can reach 1000 DEG C.
Showing in figure, protective atmosphere device is made up of protective atmosphere source of the gas 7, gas pipeline 6, gas gauge 4, AFS valve 5, is provided with gas gauge 4 and air-flow switch valve 5 in gas pipeline 6.Protective atmosphere utilizes high pure nitrogen or argon gas, prevents specimen surface from aoxidizing.
Showing in figure, hardness measurement depression bar 2 is refractory metal depression bar, is embedded with hardness measurement pressure head 13 in the lower end of hardness measurement depression bar 2, and the hardness measurement pressure head 13 of one embodiment of the present of invention is sapphire pressure head.
Figure shows, utilizes sample levels push rod 10 to promote sample movement on sample stage 12.Its structure is, the outer wall of heating furnace body 3 has sample adjustment hole, sample adjustment hole is horizontal through the outer wall of heating furnace body 3 and the body wall of embedded calandria 14, the aperture of sample adjustment hole matches with the external diameter of sample levels push rod 10, the front end of sample levels push rod 10 is relative with the sample on sample stage 12 through sample adjustment hole, and it is outside that the rear end of sample levels push rod 10 is positioned at heating furnace body 3.
The use process of the present invention is as follows:
Sample is put on the sample stage 12 of burner hearth; build furnace upper cover 16; seal plug 15; open the valve of protective atmosphere source of the gas 7, gas gauge 4 and air-flow switch valve 5; directly being filled with protective atmosphere to burner hearth through gas pipeline 6, about 5 minutes time, so that the atmosphere in burner hearth is entirely protective atmosphere; in whole heating and test process, persistently it is filled with protective atmosphere.
Connecting the power supply of embedded calandria 14, utilize temperature controller 8 regulation to add thermocurrent, make embedded calandria 14 heat up, to test temperature, whole heating process uses thermocouple 11 to monitor temperature change in real time.
Under different technological temperature environment, test sample is carried out hardness test, such as 400 DEG C, 500 DEG C, 600 DEG C, 1000 DEG C etc..Test process is: at each test temperature spot, it is first turned on heating furnace upper cover sealing-plug 15, insert hardness measurement depression bar 2, regulation heating furnace lifting platform 9, touches specimen surface to hardness measurement pressure head 13, clicks on the hardness test button of hardometer main body 1, hardness measurement pressure head 13 pressing in sample, keeping certain time, lift, the display screen of hardometer main body 1 provides hardness number.Utilize sample levels push rod 10 to promote sample movement on sample stage 12, repeat above-mentioned measurement process.
The present invention can realize hardness number under the dissimilar metal material varying temperature environments such as cold-strip steel, high-abrasive material, high temperature alloy and measure.
Claims (5)
- null1. the hardometer of a measuring metallic materials alternating temperature hardness，It is characterized in that: it includes hardometer main body (1)、Hardness measurement depression bar (2)、Heating furnace body (3)、Heating furnace lifting platform (9)、Temperature controller (8)、Thermocouple (11)，The hardness measurement depression bar (2) of hardometer main body (1) is disposed vertically，Heating furnace body (3) is positioned at the lower section of hardness measurement depression bar (2)，Heating furnace body (3) is placed on heating furnace lifting platform (9)，Embedded calandria (14) is installed in heating furnace body (3)，The center burner hearth of embedded calandria (14) has sample stage (12)，Heating furnace body (3) has can the furnace upper cover (16) of folding，Furnace upper cover (16) is provided with sealing-plug (15)，Embedded calandria (14) is connected with heating power supply，Thermocouple (11) is connected with embedded calandria (14)，Temperature controller (8) is connected in the circuit between heating power supply and embedded calandria (14).
- The hardometer of measuring metallic materials alternating temperature hardness the most according to claim 1; it is characterized in that: it also has protective atmosphere device; protective atmosphere device is made up of protective atmosphere source of the gas (7), gas pipeline (5), gas gauge (4), AFS valve (5); protective atmosphere source of the gas (7) is connected by the burner hearth of gas pipeline (6) with heating furnace body (3), is provided with gas gauge (4) and air-flow switch valve (5) in gas pipeline (6).
- The hardometer of measuring metallic materials alternating temperature hardness the most according to claim 2, it is characterized in that: be filled with nanometer heat insulation material (17) between shell and the embedded calandria (14) of described heating furnace body (3), nanometer heat insulation material (17) is by separated with embedded calandria (14) for heating furnace body (3) shell.
- The hardometer of measuring metallic materials alternating temperature hardness the most according to claim 3, it is characterised in that: described hardness measurement depression bar (2) is refractory metal depression bar, is embedded with hardness measurement pressure head (13) in the lower end of hardness measurement depression bar (2).
- The hardometer of measuring metallic materials alternating temperature hardness the most according to claim 4, it is characterized in that: on the outer wall of described heating furnace body (3), have sample adjustment hole, sample adjustment hole is horizontal through the outer wall of heating furnace body (3) and the body wall of embedded calandria (14), the aperture of sample adjustment hole matches with the external diameter of sample levels push rod (10), the front end of sample levels push rod (10) is relative with the sample on sample stage (12) through sample adjustment hole, and it is outside that the rear end of sample levels push rod (10) is positioned at heating furnace body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387405.4A CN105891033A (en) | 2016-06-02 | 2016-06-02 | Durometer for measuring variable-temperature hardness of metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387405.4A CN105891033A (en) | 2016-06-02 | 2016-06-02 | Durometer for measuring variable-temperature hardness of metal material |
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| Publication Number | Publication Date |
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| CN105891033A true CN105891033A (en) | 2016-08-24 |
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| CN201610387405.4A Pending CN105891033A (en) | 2016-06-02 | 2016-06-02 | Durometer for measuring variable-temperature hardness of metal material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403618A (en) * | 2016-10-31 | 2017-02-15 | 芜湖职业技术学院 | Electric heating furnace and temperature control system thereof |
| CN107907437A (en) * | 2017-12-15 | 2018-04-13 | 重庆跃进机械厂有限公司 | Internal combustion engine bearing Gao Wenbushi rigidity detection devices and detection method |
| CN108037002A (en) * | 2018-01-08 | 2018-05-15 | 中国科学院金属研究所 | A kind of material ultra-temperature mechanical performance test equipment and its high temperature furnace used |
| CN108982268A (en) * | 2018-09-06 | 2018-12-11 | 河钢股份有限公司 | A kind of high-temperature hardness gauge that can carry out continuous alternating temperature multi-point sampler |
-
2016
- 2016-06-02 CN CN201610387405.4A patent/CN105891033A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403618A (en) * | 2016-10-31 | 2017-02-15 | 芜湖职业技术学院 | Electric heating furnace and temperature control system thereof |
| CN107907437A (en) * | 2017-12-15 | 2018-04-13 | 重庆跃进机械厂有限公司 | Internal combustion engine bearing Gao Wenbushi rigidity detection devices and detection method |
| CN108037002A (en) * | 2018-01-08 | 2018-05-15 | 中国科学院金属研究所 | A kind of material ultra-temperature mechanical performance test equipment and its high temperature furnace used |
| CN108037002B (en) * | 2018-01-08 | 2023-11-10 | 中国科学院金属研究所 | Material ultra-high temperature mechanical property testing instrument and high temperature furnace used by same |
| CN108982268A (en) * | 2018-09-06 | 2018-12-11 | 河钢股份有限公司 | A kind of high-temperature hardness gauge that can carry out continuous alternating temperature multi-point sampler |
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